Help Please The sum of two even numbers is even. The sum of 6 and another number is even. What conjecture can you make about the other number?
A) The other number is odd.
B) The number is even.
C) Not enough information.
D) The number is 8.

Answers

Answer 1

The conjecture that can be made about the other number is option A: the other number is odd.

Let's assume that the two even numbers are x and y. Then, we can write their sum as x + y = 2a, where a is some even number.

Now, let's consider the sum of 6 and another number, which we can represent as 6 + z, where z is some unknown number. If this sum is even, then we can write it as 2b, where b is some even number.

So, we have the equations:

x + y = 2a (since the sum of two even numbers is even)

6 + z = 2b (since the sum of 6 and another number is even)

We can subtract 6 from both sides of the second equation to get:

z = 2b - 6

Now, we can substitute this expression for z into the first equation:

x + y = 2a

And we get:

x + y + z - 2z = 2a

x + (y + z) - 2z = 2a

x + (2b - 6) - 2z = 2a

x + 2b - 2z - 6 = 2a

This equation tells us that x + 2b - 2z - 6 is an even number (since 2a is even). Since x and 2b are even, the expression -2z - 6 must also be even. Therefore, -2z must be even. This means that z is odd (since an even number minus an even number is even, and -6 is even).

So, we can conclude that the other number (z) is odd. Option A is the correct answer.

To learn more about conjecture click on,

https://brainly.com/question/5616153

#SPJ1


Related Questions

Kyle is buying gifts for Megan's birthday and needs to stay in budget

Cake = half his money + 36.50
Decorations = half of what he had left + 36.50
Sweets = half of what he had left + 18.25

Now he is out of money, what did he start with?

Answers

Answer: Let's start by using algebra to represent the problem.

Let X be the amount of money that Kyle started with.

Then we can create the following equations:

Cake = 0.5X + 36.50Decorations = 0.5(X - Cake) + 36.50Sweets = 0.5(X - Cake - Decorations) + 18.25

And we know that he's out of money, so:

Cake + Decorations + Sweets = XWe can use substitution to solve for X.

Substitute the first equation into the second equation to get:

Decorations = 0.5(X - (0.5X + 36.50)) + 36.50Decorations = 0.25X + 9.25

Substitute the first two equations into the third equation to get:

Sweets = 0.5(X - (0.5X + 36.50) - (0.25X + 9.25)) + 18.25Sweets = 0.25X + 4.75

Substitute all three equations into the fourth equation to get:

(0.5X + 36.50) + (0.25X + 9.25) + (0.25X + 4.75) = X

Simplify and solve for X:

1X + 50.50 = X50.50 = 0.5XX = 101

Therefore, Kyle started with $101.

HELPPPPPPPPPP... please help i don't get this whatsoever and my teacher doesn't really help. i dont get none of it at all. please help asap !

Answers

Answer:

I can tell

Step-by-step explanation:

Ok so to help you understand it do you see the button that says video? Yeah, click it. A video will pop up and explain it to you! :)

Please solve
1.) 4(v + 1) = 16

Answers

Answer:

it's an easy one

Step-by-step explanation:

1. combine those -->4v+4=16

2. subtract the like terms--> 4v=16-4--> 4v=12

3. divide--> v=12/4-->3

4. Answer--> v=3

PLSSS HELP ITS DUE TOMMROW I WILL GIVE U MORE POINTS WHEN I GET MORE PLSSS

Answers

Answer:

[tex]A_{\text{red}} = 1766.25 \text{ in}^2[/tex]

Step-by-step explanation:

We can see that there are four bands total on the target, two of which are red bands. With this information, we can solve for the radius of the circle within each band, since we know that each band is the same width:

[tex]r_1 = \dfrac{1}{4} \cdot 30 = 7.5\\[/tex]

[tex]r_2 = \dfrac{2}{4} \cdot 30 = 15\\[/tex]

[tex]r_3 = \dfrac{3}{4} \cdot 30 = 22.5\\[/tex]

[tex]r_4 = 30[/tex]

We can now find the area of each red band by subtracting:

the area of the circle within the white band just inward of the red band

-- from --

the area of the circle within the red band.

Finding the area of the outer red band:

[tex]A_{\text{outer red}} = A(\text{circle within outer red}) - A(\text{circle within outer white})[/tex]

[tex]A_{\text{outer red}} = A(\odot \text{ with radius }r_4) - A(\odot \text{ with radius } r_3)[/tex]

↓ substituting the radius values into the circle area formula ([tex]\pi r^2[/tex])

[tex]A_{\text{outer red}} = (\pi \cdot 30^2) - (\pi \cdot 22.5^2)[/tex]

↓ using 3.14 for [tex]\pi[/tex]

[tex]A_{\text{outer red}} = (3.14 \cdot 30^2) - (3.14 \cdot 22.5^2)[/tex]

↓ evaluating the right side

[tex]A_{\text{outer red}} = 2826 - 1589.625[/tex]

[tex]A_{\text{outer red}} = 1236.375 \text{ in}^2[/tex]

Finding the area of the inner red band:

[tex]A_{\text{inner red}} = A(\text{circle within inner red}) - A(\text{circle within inner white})[/tex]

[tex]A_{\text{inner red}} = A(\odot \text{ with radius }r_2) - A(\odot \text{ with radius } r_1)[/tex]

↓ substituting the radius values into the circle area formula ([tex]\pi r^2[/tex])

[tex]A_{\text{inner red}} = (\pi \cdot 15^2) - (\pi \cdot 7.5^2)[/tex]

↓ using 3.14 for π

[tex]A_{\text{inner red}} = (3.14 \cdot 15^2) - (3.14 \cdot 7.5^2)[/tex]

↓ evaluating the right side

[tex]A_{\text{inner red}} = 706.5 - 176.625[/tex]

[tex]A_{\text{inner red}} = 529.875 \text{ in}^2[/tex]

Finally, we can find the area of all of the red on the target by adding the area of the outer and inner red bands.

[tex]A_{\text{red}} = A_{\text{outer red}} + A_{\text{inner red}}[/tex]

[tex]A_{\text{red}} = 1236.375 \text{ in}^2 + 529.875 \text{ in}^2[/tex]

[tex]\boxed{A_{\text{red}} = 1766.25 \text{ in}^2}[/tex]

A tunnel is shaped in the form of a semi-ellipse. The width of the tunnel is 20 feet and the height of the tunnel is 12 feet. A train is 10 feet wide and centered in the tunnel. Determine whether a 10-foot high train would have clearance to pass through. If so, by how much? If not, by how much? (Nearest inch.)

Answers

Since the tunnel is in the shape of a semi-ellipse, we can use the formula for the equation of a semi-ellipse:

(x^2 / a^2) + (y^2 / b^2) = 1

where "a" is the horizontal radius (half of the width) and "b" is the vertical radius (half of the height).

In this case, we have:

a = 20/2 = 10 feet
b = 12/2 = 6 feet

We can assume that the train is centered in the tunnel, so we need to find the height of the semi-ellipse at the center (i.e., the value of "y" when "x" is 0).

Plugging in the values for "a" and "b", we get:

(0^2 / 10^2) + (y^2 / 6^2) = 1

Simplifying, we get:

y^2 / 36 = 1

y^2 = 36

y = ±6 feet

Therefore, the height of the semi-ellipse at the center is 6 feet.

To determine whether a 10-foot high train would have clearance to pass through, we need to check whether the height of the semi-ellipse at the sides is greater than or equal to 10 feet.

Plugging in the values for "a" and "b" and solving for "y" when "x" is 5 feet (half of the train's width), we get:

(5^2 / 10^2) + (y^2 / 6^2) = 1

Simplifying, we get:

y^2 / 36 = 0.75

y^2 = 27

y ≈ ±5.2 feet

Since the height of the semi-ellipse at the sides is about 5.2 feet, a 10-foot high train would not have clearance to pass through. The clearance is less than 5.2 - 5 = 0.2 feet (or about 2.4 inches).

Therefore, the train would not fit through the tunnel with 10 feet of clearance.

Principle amount is 22,000. Interest rate is 4.5%.
1. Determine interest earned each year.
2. Write a recurrence relation to model the value of investment from year to year. Let Sn be the value after n years.
3. Determine value of interest after 5 years.​

Answers

Answer:

1. $990

2. Sn = Sn-1 + (r/100) * Sn-1

3. $27,037.44

Step-by-step explanation:

1. The interest earned each year can be calculated using the simple interest formula:

Simple Interest = (Principal * Rate * Time) / 100

Here, Principal = $22,000, Rate = 4.5%, and Time = 1 year

So, the interest earned each year would be:

= (22,000 * 4.5 * 1) / 100

= $990

Therefore, the interest earned each year would be $990.

2. The recurrence relation to model the value of investment from year to year is:

Sn = Sn-1 + (r/100) * Sn-1

where Sn represents the value of the investment after n years, Sn-1 represents the value after n-1 years, and r represents the annual interest rate.

Using this recurrence relation, we can calculate the value of the investment for different years:

- S1 = 22,000 + 990 = 22,990

- S2 = 22,990 + (4.5/100) * 22,990 = 24,026.55

- S3 = 24,026.55 + (4.5/100) * 24,026.55 = 25,103.46

And so on...

3. To determine the value of the investment after 5 years, we can simply substitute n = 5 in the recurrence relation:

S5 = S4 + (r/100) * S4

= S3 + (r/100) * S3 + (r/100) * S3

= S2 + (r/100) * S2 + (r/100) * S2 + (r/100) * S2

= S1 + (r/100) * S1 + (r/100) * S1 + (r/100) * S1 + (r/100) * S1

Substituting values from previous calculations:

S1 = 22,000 + 990 = 22,990

So,

S5 = 22,990 + (4.5/100) * 22,990 + (4.5/100) * 22,990 + (4.5/100) * 22,990 + (4.5/100) * 22,990

= $27,037.44

Therefore, the value of the investment after 5 years would be $27,037.44.

The cubic polynomial shown below has zeroes at x=-1and x= only and has a relative maximum at (3,8). Which of the following is its y-value when x=5?

Answers

The cubic polynomial is given as y = 0.25(x³ - 12x + 16). Then the value of y when x = 6 will be 40.

Therefore the option  C is correct.

What is polynomial?

A polynomial expression is described as an algebraic expression with variables and coefficients.

If the zeroes of the polynomial are negative 4, 2, and 2.

Then the factors will be (x + 4), (x - 2), and (x - 2).

Then the cubic polynomial will be

→ (x + 4) (x - 2) (x - 2)→ (x + 4) (x² - 4x + 4)→ (x³ - 12x + 16)

we can write the polynomial equation as:

y = C(x³ - 12x + 16)

Then the polynomial is maximum at (-2, 8) then the value of C will be 0.25.

y = 0.25 (x³ - 12x + 16)

y = 0.25 (6³ - 12 × 6 + 16)

y = 0.25 (216 - 72 + 16)

y = 0.25 (160)

y = 40

Note that there was no  diagram provides, i solved a similar question

Learn more about the polynomial at:

brainly.com/question/17822016

#SPJ1

Solve for X. *
-48-x=-39

Answers

Answer:

x = - 9

Step-by-step explanation:

-48 - x = -39

Add 48 on both sides

-x = 9

Divided both sides by -1

x = - 9

So, the answer is x = - 9

5. Which box-and-whisker plot represents this set of data? (1 point)
90, 98, 75, 84, 89, 91, 70, 81, 93, 84, 100

Answers

the points are 90,98,91,70 this is based off the box and whisker plot with y=mc+bc

Choose the correct Set-builder form for
the following set written in Roster form:
{4, 5, 6, 7, 8}

Answers

The value of correct Set-builder form is,

⇒ { x | x ∈ IR ; 4 ≤ x ≤ 8 }

We have to given that;

The set is,

⇒ {4, 5, 6, 7, 8}

Thus, We can write correct Set-builder form as,

⇒ {4, 5, 6, 7, 8}

⇒ { x | x ∈ IR ; 4 ≤ x ≤ 8 }

So, The value of correct Set-builder form is,

⇒ { x | x ∈ IR ; 4 ≤ x ≤ 8 }

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ1

LESSON 26 SESSION 3
There are at least 12 people on a bus.
a. Write and graph an inequality to show the number of people who may be on
the bus.

Answers

An inequality to show the number of people  is  p ≥ 12

Writing and graphing an inequality to show the number of people

Let p be the number of people on the bus. We know that there are at least 12 people on the bus, so we can write:

p ≥ 12

This inequality means that the number of people on the bus, p, must be greater than or equal to 12.

To graph this inequality, we can draw a horizontal line at y = 12 on the y-axis, and shade the area above the line, since any value of p that is greater than or equal to 12 satisfies the inequality.

Here's a graph of the inequality attached

Read more about inequality at

https://brainly.com/question/30390162


#SPJ1

50 Points! Multiple choice algebra question. Photo attached. Thank you!

Answers

Answer:

Step-by-step explanation:

C (Wait for another defendant, check with him and write this answer)

Hey!
Answer: C
(If you need more help with algebra, try Microsoft Maths Solver)

Add: -8x8 + (-3x8 + 3)
Enter the correct answer.

Answers

43 because when I multipleded all those answer I got my answer 43
-85 is the correct answer

help pls i dont understand this

Answers

The equation that can be used to determine the cost of each admission ticket is 4x + $25.00 = $175.00.

The cost in dollars of the admission ticket is $ 37.50.

How to find the cost of the tickets ?

Let x be the cost, in dollars, of each admission ticket, including tax.

The total cost of 4 admission tickets can be expressed as 4x, since the cost of each ticket is the same.

The total cost of 4 admission tickets and parking is given as $175.00, so we can write:

4x + $25.00 = $175.00

Simplifying the equation, we can solve for x:

4x = $175.00 - $25.00

4x = $150.00

x = $37.50

Find out more on cost at https://brainly.com/question/29521822

#SPJ1

!! will give brainlist !!

Use trigonometric ratios to find the value of each variable. Round answers to the nearest tenth.

Answers

Answer:

Set your calculator to degree mode.

2) tan(43°) = x/8.2

x = 8.2tan(43°) = 7.6

3) sin(29°) = 3.5/x

x sin(29°) = 3.5

x = 3.5/sin(29°) = 7.2

A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 32 weeks. Assume that for the population of all unemployed individuals is normally distributed and the population mean length of unemployment is 32 weeks and that the population standard deviation is 3.9 weeks. Suppose you would like to select a random sample of 66 unemployed individuals for a follow-up study.

Answer the following, rounding all answers to three decimal places.

Find the probability that a single randomly selected value is greater than 31.9.
P(X > 31.9) = ???

Find the probability that a sample of size
is randomly selected with a mean greater than 31.9.
P(M > 31.9) = ???

Answers

The probability that a single randomly selected value is greater than 31.9 is 0.511.

The probability that a sample of size 66 is randomly selected with a mean greater than 31.9 is 0.641.

How to calculate the probability

Probability that a single randomly selected value is greater than 31.9:

z = (31.9 - 32) / 3.9 = -0.026

We can find the probability:

P(X > 31.9) = P(Z > -0.026) = 0.511

Also, μ = 32, σ = 3.9, n = 66

z = (31.9 - 32) / (3.9 / √66) = -0.363

Using a standard normal distribution table or calculator, we can find the probability:

P(M > 31.9) = P(Z > -0.363) = 0.641

Leans more about probability on

https://brainly.com/question/24756209

#SPJ1

Billy Bob wants to paint the outside wall of his circular pool. The circular
wall is 4 feet tall and has a radius of 15 feet. If paint cost $28 per gallon and
covers 225 square feet, how much will it cost to paint the wall. The paint is
only avaliable in gallon containers.

Answers



The first step is to calculate the surface area of the circular wall of the pool, which can be calculated using the formula:

A = 2πrh

where A is the surface area, π is the mathematical constant pi (approximately equal to 3.14159), r is the radius of the circular wall, and h is the height of the wall.

In this case, the radius is 15 feet and the height is 4 feet, so:

A = 2π(15)(4)
A = 376.99 square feet

The next step is to calculate how many gallons of paint will be needed. Since one gallon of paint covers 225 square feet, we can divide the surface area by the coverage per gallon:

Gallons = A / Coverage per gallon
Gallons = 376.99 / 225
Gallons = 1.68

Since the paint is only available in gallon containers, Billy Bob will need to purchase 2 gallons of paint to ensure that he has enough to cover the entire surface.

Finally, we can calculate the total cost of the paint by multiplying the number of gallons by the cost per gallon:

Total cost = Number of gallons x Cost per gallon
Total cost = 2 x $28
Total cost = $56

Therefore, it will cost Billy Bob $56 to paint the circular wall of his pool.

The amount it would cost to paint the wall, given the cost of paint and the area covered is $ 56 .

How to find the cost to paint ?

The surface area of the circular wall would be :

A = 2 x π x r x h

The area is therefore:

= 2 x π x r x h

= 2 x 3. 14 x 15 x 4

= 376. 8 square feet

The number of gallons needed is therefore:

= 376. 8 / 225

= 1. 674

= 2 gallons

The cost of two gallons is:

= 2 x 28

= $ 56

Find out more on cost at https://brainly.com/question/4481538

#SPJ1

A triangular prism and it’s net are shown below. The top and the bottom of the prism are shaded. All lengths are in centimeters.)

Answers

The solution is: the area of the shaded base in square centimeters is:

B= 15 cm²

Here, we have,

The base of the triangular shaped wedge of cheese is a right-triangle.To find the area of a right-triangle you apply the formula for half base by height.

A=1/2*b*h

 = base area

 = B

In this case, assume the sides of the triangle given are;

a=5 cm and b=6 cm,

thus area will be 1/2*6*5 =15 cm²

Hence, the area of the shaded base in square centimeters is :

B= 15 cm²

To learn more on Area click:

brainly.com/question/20693059

#SPJ1

complete question:

Evelyn cut a wedge of cheese into the shape of a triangular prism-like the one shown below. The shaded part represents one of the bases of the prism.

A formula for the volume of a triangular prism is v=Bh . Which equation can be used to find B , the area of the shaded base in square centimeters?

Question 6 of 10
True or false? If you took a true "if-then' statement and reversed the clauses,
the new statement would also be true.
OA. True
OB.
False

Answers

The statement that "if you took a true "if-then' statement and reversed the clauses, the new statement would also be true" is False.

Why is this false ?

By reversing the clauses within an accurate "if-then", one will manifest a new statement known as the "converse" of the initial formula. Though, it is not inevidably true.

For instance, if the original expression was "If it rains, then the ground gets wet", its converse is "If the ground gets wet, then it rains". Unfortunately, that specific converse has the potential to be incorrect since there are several other methodologies from which the land can gain moisture beside rain (e.g. sprinkler system, someone unintentionally pouring water, etc.).

Find out more on " if - then statements" at https://brainly.com/question/27839142

#SPJ1

N Heracio's Computer Time Shopping Research 10% Videos 15% Homework 20% Games 20% Social dia 25% Heracio used the computer a total of 40 hours last week. How many more hours did Heracio use the computer to do homework than shop online?​

Answers

Answer: According to the problem, N Heracio used the computer for 40 hours last week. We are asked to find the difference between the time spent on shopping online and doing homework.

To do this, we first need to find the amount of time spent on each activity. We can do this by multiplying the total computer time by the percentage of time spent on each activity:

Time spent on videos = 10% of 40 hours = 4 hours

Time spent on homework = 15% of 40 hours = 6 hours

Time spent on games = 20% of 40 hours = 8 hours

Time spent on social media = 25% of 40 hours = 10 hours

Time spent on shopping online = 20% of 40 hours = 8 hours

Therefore, Heracio spent 6 hours on homework and 8 hours on shopping online.

The difference between these two amounts is:

6 hours - 8 hours = -2 hours

This means that Heracio spent 2 hours more on shopping online than on doing homework.

Step-by-step explanation:

37. When making biscuits, a baker
mixes flour and sugar in the ratio
4:1. If he uses 6kg of sugar when
making some biscuits, how much
flour should he use?
(a) 30kg
(b) 24kg
C 10kg
D 8kg
E 1.5kg

Answers

The baker should use 24kg amount of flour when making the biscuits. The correct answer is (b) 24kg.

To determine the amount of flour the baker should use when making biscuits, we can use the given ratio of flour to sugar, which is 4:1.

Since the ratio is 4:1, for every 4 parts of flour, there is 1 part of sugar. Therefore, the ratio of flour to sugar can be expressed as 4/1.

If the baker uses 6kg of sugar, we can set up a proportion to find the corresponding amount of flour:

4/1 = x/6

Cross-multiplying, we get:

4 * 6 = 1 * x

24 = x

Therefore, the baker should use 24kg of flour when making the biscuits.

In summary, the correct answer is (b) 24kg.

To learn more about : amount

https://brainly.com/question/25720319

#SPJ11

I really need hel with this please

Answers

The resulting matrix after row 1 is multiplied by 2 is given as follows:

[tex]\left[\begin{array}{ccc}14&-8&16\\-12&7&-13\end{array}\right][/tex]

How to do the row operation?

The matrix in the context of this problem is defined as follows:

[tex]\left[\begin{array}{ccc}7&-4&8\\-12&7&-13\end{array}\right][/tex]

The first row is given as follows:

7, -4 and 8.

Multiplying the first row by two, we have that:

7 x 2 = 14.-4 x 8 = -8.8 x 2 = 16.

(when we multiply a matrix by a constant, each element of the matrix is multiplied by the constant).

Hence the resulting matrix is given as follows:

[tex]\left[\begin{array}{ccc}14&-8&16\\-12&7&-13\end{array}\right][/tex]

(the second row was kept constant, while the first row was multiplied by 2).

Missing Information

The matrix is:

[tex]\left[\begin{array}{ccc}7&-4&8\\-12&7&-13\end{array}\right][/tex]

More can be learned about operations with matrices at https://brainly.com/question/16901354

#SPJ1

Select the correct equation for the following sentence: Twenty-four is the same as 31.4 times a number plus negative 8.4. 31.4n + 8.4 = 24 –8.4n + 31.4 = 24 24 = 31.4n + (–8.4) 24 – 31.4 = –8.4n

Answers

The correct equation for the following sentence is 24 = 31.4n + (–8.4) . Option C

What are algebraic expressions?

Algebraic expressions are simply described as those expressions that are made up of factors, coefficients, constants, terms and variables.

Additionally, algebraic expressions are made up of arithmetic or mathematical operations, such as;

BracketDivisionSubtractionMultiplicationParenthesesAddition

From the information given, we have that;

24 is the constant

Let the number be represented as n

Then, the expression is given as;

24 = 31.4(n) - 8.4

Learn about algebraic expressions at: https://brainly.com/question/4344214

#SPJ1

what is the slope of the line below?

Answers

Answer:

B. Y= 5x - 2

Step-by-step explanation:

The Y is negative, you can see the number -5 below the point, if you go to the top, that is, to 0 and count down, the lines are two and the X is positive 5, you can see where the number 5 is and the point is above.

The radius of a cylindrical water tank is 6 ft, and its height is 16 ft. Helpppppp I’m running out of time

What is the volume of the tank?
Use the value 3.14 for , and round your answer to the nearest whole number.
Be sure to include the correct unit in your answer.
6 ft
16 ft
0
ft

Answers

Answer:

V 1809 ft^3

Step-by-step explanation:

Given:

r (radius) = 6ft

h (height) = 16ft

π = 3,14

Find: V (volume) - ?

[tex]v = \pi {r }^{2} \times h[/tex]

[tex]v = 3.14 \times {6}^{2} \times 16 ≈1809 \: {ft}^{3} [/tex]

For the following right triangle, find the side length x. Round your answer to the nearest hundredth

Answers

The side length x of the given right angle triangle is: 14.97

How to use Pythagoras Theorem?

When two sides of a right-angled triangle are given and one side is to be found, we can do so using the Pythagoras theorem. In the given triangle the base is x, the perpendicular is 10 and the hypotenuse is 18.

According to the Pythagoras Theorem, the following equation can be written as:

x² = 18² - 10²

x = √224

x = 14.97

Thus, that is the missing length of the given right triangle

Read more about Pythagoras Theorem at: https://brainly.com/question/13276558

#SPJ1

Select all the correct answers.
If the measure of angle 0 is 2n/3, which statements are true?

Answers

Answer:
Angle 0 is 6.28/3. or 2.093.
Step-by-step explanation:
Pie is an irrational number, so it will be repeating forever. A simple way to get pie is just 3.14. 3.14 times 2 is 6.28. Divide 6.28 by 3 to get 2.093 repeating, but simplified is 2.093.

Which digits replace A, B and C in the
boxes?
+
15.73
32.4 A
C. 16
48.B 4
1

Answers

Answer:

Step-by-step explanation:

Simplify the polynomial expression. (x+7)^2

Answers

Answer:

x²+14x+49

Step-by-step explanation:

(a+b)²=a²+2ab+b²

(x+7)²=x²+2×7×x+7²=x²+14x+49

Element X is a radioactive isotope such that its mass decreases by 59% every hour. I
an experiment starts out with 530 grams of Element X, write a function to represent
the mass of the sample after t hours, where the rate of change per minute can be
found from a constant in the function. Round all coefficients in the function to four
decimal places. Also, determine the percentage rate of change per minute, to the
nearest hundredth of a percent.

Answers

The percentage rate of change per minute is approximately 0.98%

The mass of the sample decreases by 59% every hour, so we can write the following differential equation:

dm/dt = -0.59m

Rate of change of the mass (dm/dt) is equal to the mass (m) multiplied by the constant -0.59.

We can solve this differential equation using separation of variables:

dm/m = -0.59 dt

Integrating both sides, we get:

ln|m| = -0.59t + C

where C is the constant of integration.

To find C, we can use the initial condition that the mass of the sample is 530 grams at t=0:

ln|530| = C

C = ln(530)

So the solution to the differential equation is:

ln|m| = -0.59t + ln(530)

[tex]m(t) = 530 e^(^-^0^.^5^9^t^)[/tex]

This function represents the mass of the sample after t hours, where the rate of change per minute is given by the constant

k = -0.59/60 = -0.00983 (rounded to 5 decimal places).

To find the percentage rate of change per minute, we can multiply k by 100 to convert it to a percentage:

-0.00983 × 100 = -0.983%

Therefore, the percentage rate of change per minute is approximately 0.98%

To learn more on Percentage click:

https://brainly.com/question/24159063

#SPJ1

Other Questions
Match each vocabulary term below with its definition.1.identification to a church or belief; adherence to a certain faith 2.belonging to a nation by virtue of birth or naturalization 3.a group of people that share a common ancestry, nationality, or culture (including language and religious beliefs and practices) 4.being affiliated with a particular culture, association, or people ethnicgroup identity nationalityreligious affiliation A 120V to 12V bell transformer operates at 100% efficiency and supplies a 12V, 6W alarm bell. The transformer is wound with 400 turns of the primary winding. Calculate the:i)Secondary currentii)Primary current A, agrees to deliver his old CTV for Rs. 30,000 to B, anelectronic dealer, in exchange fornew CTV and agrees to pay the difference in cash. Is it a validcontract of sale? What would beyour answer An inflated car tyre is considered to have a constant volume, regardless of any changes in temperatureor pressure. Use the kinetic theory of gases to answer following. a) How does the air in the tyre exert pressure on the walls of the tyre?b) Why is the pressure the same at all points on the inside wall of a tyre?c) What happens to the pressure on the inside walls of the tyre if the temperature of the air increases? Explain your answer. d) More air is pumped into the tyre whilst the temperature is kept constant until there are twice as many molecules as before. Explain why you would expect the pressure to be doubled A 0.4856 g sample of solid silver oxide is heated. Find the volume of O2 that can be released at STP. Questions for the Real-Life Ethical Dilemma Exercise 1.Which stakeholder(s) did the captain of the Costa Concordia consider, based on the alleged actions described?2.How were the different stakeholders affected by this disaster?3.What role should Carnival Corporation have in resolving the needs of the various stakeholders impacted by this disaster? Identify 3 different project stakeholders (executives vs. project team members vs. program management office vs. external stakeholders,etc.) that would be part of a communication plan. Identify and explain the channel(s) you would use to communicate with them and the reason(s) why this would be the most effectiveapproach.I How did the Missouri Compromise, Compromise of 1850, and Kansas-Nebraska Act differ in how slavery expanded into new western states?Pls help! otal assets of Charter Company equal $880,000 and its equity is $510,000. What is the amount of its liabilities?b. Total assets of Martin Marine equal $680,000 and its liabilities and equity amounts are equal to each other. What is the amount of its liabilities? What is the amount of its equity? which of the following statements is true? a monopolistically competitive firm will produce the quantity at the point where the demand curve crosses the marginal cost curve. a monopolistically competitive firm will maximize profits by charging a price equal to marginal cost. a monopolistically competitive firm will maximize profits when it produces the quantity where marginal cost equals margin How did president lyndon b. Johnson respond to this event?. An open top box is made by cutting out 2 in by 2 in squares from the corners of a large square piece of cardboard. Using the picture as a guide, find an expression for the surface area of the box. If the surface area is 609 in, find the length of x. Remember, there is no top. A cat darts around a room chasing a ball. The cat first travels along the vector and then chases the ball along the vector . The cat darts after the ball 1.5 times along the vector . This is where the cat catches the ball and chews on it. What vector describes the cats final position? Show all your work. A test is worth 80 points. multiple choice questions are worth2 points, and short- answer questions are worth 4 points. if the test has 25 questions, how many multiple- choice questions are there?a. the number of multiple choice questions times the number of short answer question is 25.b. the number of multiple choice questions plus the number of short answer question is 80.c. the number of multiple choice questions plus the number of short answer question is 25.d. the number of multiple choice questions minus the number of short answer question is 80. Which two of these founding documents were inspired by Enlightenment philosopher John Locke's ideas of "life, liberty, and property?. The Declaration of IndependenceB. The Articles of ConfederationC. The Virginia Statute of Religious FreedomD. The U. S. Constitution What title should be given to these outcomes of the Articles of Confederation?A. The northwest passageB. Ratification ProcessC. The Monroe DoctrineD. Westward ExpansionPLEASE HELP What are Business Loan? Marys dog weighed 25 kg, but then it got sick and lost 2. 3 kg. A What percentage of body weight did the dog lose? B Mary weighs 58 kg. If Mary lost the same percentage of her body weight as what the dog did, how much would Mary weigh? Determine the equation of the circle with center (6,-2)containing the point (14,6). 1. 20% of the items manufactured by a certain process are known to be defective. 18 items are chosen at random. a. how many would you expect to be defective? explain briefly what this means. b. find the probability that at least 4 are defective. give a numerical answer.