if a = 4 and b=3, what is the value of (a+b) (a-b)​

Answers

Answer 1

Answer:

-7

Step-by-step explanation:

(4+3)x(4-3)

4+3=7

4-3=-1

7x-1= -7


Related Questions

-p(51+z) = Dz+84
Z=?

Answers

Answer:

[tex]z=\frac{3 (28 + 17p)}{p + D}[/tex]

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

A car increases, then decreases, its speed. Which table could represent the speed of the car? A 2-column table with 5 rows. The first column is labeled time (minutes) with entries 5, 6, 7, 8, 9. The second column is labeled speed (miles per hour) with entries 45, 43, 41, 42, 43. A 2-column table with 5 rows. The first column is labeled time (minutes) with entries 5, 6, 7, 8, 9. The second column is labeled speed (miles per hour) with entries 45, 47, 49, 48, 47. A 2-column table with 5 rows. The first column is labeled time (minutes) with entries 5, 6, 7, 8, 9. The second column is labeled speed (miles per hour) with entries 45, 45, 45, 43, 41. A 2-column table with 5 rows. The first column is labeled time (minutes) with entries 5, 6, 7, 8, 9. The second column is labeled speed (miles per hour) with entries 45, 43, 41, 41, 41.

Answers

Answer:

The speed increases (45—>47—>49) then decreases (48—>47) over time.

Step-by-step explanation:

HOPE THIS HELPED ✨

Answer: The speed increases (45—>47—>49) then decreases (48—>47) over time.

If the temperature at 7:00 am was - 7 degrees C and the temperature rose
8 degrees C during the morning, what was the temperature by noon?

Answers

Answer:

Temperature in noon = 1°C

Step-by-step explanation:

Given:

Temperature on 7:00 Am = -7°C

Temperature rose = 8°C

Find:

Temperature in noon

Computation:

Temperature in noon = Temperature on 7:00 Am + Temperature rose

Temperature in noon = -7°C + 8°C

Temperature in noon = 1°C

plz help me out! What is the result when x^3 + 6x^2 + 10x + 25 is divided by x+ 5?

Answers

Answer:

x² + x + 5

Step-by-step explanation:

Using Synthetic division

 - 5 | 1    6    10     25

        ↓  - 5   - 5   - 25

       -----------------------

        1    1      5      0 ← remainder

Since the remainder is zero then (x + 5) is a factor of the polynomial

The Quotient = x² + x + 5

Thus

x³ + 6x² + 10x + 25 = (x + 5)(x² + x + 5)

Here is some information about the goals scored in some hockey games.

Each game has four quarters.

Goals in hockey games

Number

of goals 5

The mean number of home

goals scored is 2.5

The mean number of away

goals scored is 1.8

How many home and away

games have been played

in total?

3rd

2nd

Quarter

Away goals

Key:

Home goals

Answers

Answer:

48 goals

Step-by-step explanation:

From the attached image, we can see that:

Number of Home Goals = 9 + 6 + 8 + 7

= 30

Number of Away goals = 2 + 7 + 4 + 5

= 18

Total number of goals = 30 + 18

= 48

can someone please help me with this question ​

Answers

Answer:6

Step-by-step explanation:

I have three squares and I want to divide them by 3/4 How many pieces would I have

Answers

Cant help I’m sorry

Find the slope. ( include whether positive or negative.)​

Answers

Answer:

that is a negative slope

but dont know how to find the slope sorry

Step-by-step explanation:

[tex]\tt Step-by-step~explanation:[/tex]

Remember: To find the slope, we use the equation Rise/Run.

[tex]\tt Step~1:[/tex]

Let's find the rise first. Rise = How many units it goes up/down We can count down 6 units from the origin. Our rise is - 6.

[tex]\tt Step~2:[/tex]

To find the run. we count left/right. We could count 8 units. Our run is 8.

The slope is negative because it slopes downwards. If the slope is positive, then the line would be rising up.

[tex]\tt Step~3:[/tex]

To find the slope, we use the formula rise/run.

[tex]\tt \frac{-6}{8}=-\frac{3}{4}~or~ -0.75[/tex]

[tex]\large\boxed{\tt Our~final~answer:~m=-\frac{3}{4}~or~-0.75;~Negative~slope}[/tex]

How do u check your answer for 4x+12-2x=26

Answers

Answer:

7

Step-by-step explanation:

4x+12-2x=26

Or, 2x=26-12

Or, 2x=14

Or, x=7

Help match them with the answer I would really appreciate it

Answers

Answer:

Graph 1 goes with the equation [tex]y = \frac{1}{2}x - 7[/tex]

Graph 2 goes to the equation y = [tex]-\frac{3}{4}x + 9[/tex]

Graph 3 goes to the equation y = x + 10

Jacob has unlocked 6 less than
twice as many game levels as
Shannon. If Jacob has unlocked 14
levels, how many levels has
Shannon unlocked?

Answers

Answer:

Shannon has unlocked 40 levels.

Step-by-step explanation:

14 + 6 = 20

20 * 2 = 40

The Quadratic when written in factored form is (x-3)(x+9)=0. What are the roots?
3 and 9
-3 and 9
3 and -9
-3 and -9

Answers

Set both equal to 0
(x-3) = 0
x = 3
(x+9) = 0
x = -9
So 3 and -9

If the equation |5x − 10| = 45 has two solutions, then how many solutions does the equation |5x − 10| = −45 have? Explain.

Answers

Answer:

No solution

Step-by-step explanation:

It equals a negative so there is no solution

The red lines on the diagram show the layout for a running event. Runners will race around the triangle-shaped grassy area. What is the total length of the race course? what is The total distance in km.

Answers

Answer:

Total distance = 5.754 km

Step-by-step explanation:

Red lines of the right triangle show the layout of the race course.

Total length of the race course = Perimeter of the triangle

Perimeter of the triangle = Sum of the measures of all three sides

                                         = 1.83 + 1.524 + 2.4

                                         = 5.754 km

Therefore, total distance of the race course is 5.754 km.

Answer:

5.754

Step-by-step explanation:

Each output of a function is 0.25 greater than the corresponding input. Which equation is a rule for
the function?
O y = 0.25x
O y = x/0.25
O y = x +0.25
O y = x - 0.25

Answers

Answer:

A. y = x+0.25

1. Two phone plans offer 500 free minutes per month. Plan A charges $29.99 per month with a charge of $0.45 for each additional minute. Plan B charges $34.99 per month with a charge of $0.40 for each additional minute. 1. Write an inequality to find the number of additional minutes, m, for which Plan A costs more than Plan B for any given month.​

Answers

 

Step-by-step explanation:

Plan A costs 100 minutes more than Plan B for the given month.​

What is inequality?

Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.

Plan A is $29.99 per month plus $0.45 per minute further than the allotted time. Plan B costs $34.99 per month plus $0.40 for each additional minute.

According to the given question, we can write the inequality would be as:

⇒ 29.99 + 0.45m > 34.99 + 0.40m

⇒ 0.45m - 0.40m > 34.99 - 29.99

Apply the subtraction operation, and we get

⇒ 0.05m > 5

⇒ m > 5/0.05

Apply the division operation, and we get

⇒ m > 100 minutes

Therefore, Plan A costs 100 minutes more than Plan B for the given month.​

Learn more about inequalities here :

brainly.com/question/20383699

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please help!! giving 20 points !

What is the area of this rectangle?

Answers

Where are the options ????? Please tell

Mental Math Situation: You exercised 24 hours each month for a year. How many hours did you exercise by the end of the year? You may be able to do the math mentally thanks to expanded notation and the Distributive Property.​

Answers

Answer:

So 24 hours each month times 12 would be 288 hours of working out of one year.

Hope this helps!

Step-by-step explanation:

Answer: 288h

Step-by-step explanation:

There are 12 months in a year if you exercise 24h per month you have to multiply 12 x 24 = 288h

In January, a city’s snowfall was 5/8 foot below the historical average. In February, the snowfall was 3/4 foot above the historical average. Was the city’s snowfall in the two-month period above or below the historical average? By how much?

Answers

Answer:

The city's snowfall in the two-month period was above the historical average by 1/8 feet

Step-by-step explanation:

Fractions

The question provides the following information: In January, a city’s snowfall was 5/8 feet below the historical average. Let's assume the snowfall level to be positive if it's above the historical average and negative otherwise.

The data from January gives us a snowfall of -5/8 feet because it was below the average.

We also know in February, the snowfall was 3/4 foot above the historical average. Following our predefined convention, the data from February gives us a snowfall of +3/4 feet.

To know if the city's snowfall during the two-month period was above or below the historical average, we just need to add them, signs included.

If the result is negative, the two-month period showed a snowfall below the historical average.

Let's find the sum of

[tex]\displaystyle -\frac{5}{8}+\frac{3}{4}[/tex]

The LCM of 4 and 8 is 8, thus:

[tex]\displaystyle -\frac{5}{8}+\frac{3}{4}=\frac{-5+2*3}{8}=\frac{1}{8}[/tex]

Since this quantity is positive, we can say the city's snowfall in the two-month period was above the historical average by 1/8 feet.

From the diagram below, if the measure of < <= 30°, and side AB = 16, then side AC =

Select one:
a.
b.8
C.32
d. 16

plsss help it’s for geometry 2

Answers

Answer:

32

Step-by-step explanation:

The length of AC as per he sine of an angle is 32.

What is the sine of an angle in a right angle triangle?

The sine of an angle is the ratio of the height and the hypotenuse of the triangle.

Given, ∠C = 30°

AB = 16

Therefore, sin ∠C = (AB/AC)

Therefore, sin (30°) = 16/AC

⇒ (1/2) = 16/AC

⇒ AC = 2 × 16

⇒ AC = 32

Learn more about the sine of an angle here: https://brainly.com/question/22688137

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Please help me!!!! Due in 1 hour, whoever helps me will get a brainliest!

Answers

Answer:

1.) The ratio of peaches to oranges 5 : 4

2.) 3 : 12

3.) I have 8 fruits in total, but 2 blueberries. The ratio using numbers would be: 8 : 4

4.)

- 11 : 14

- 14 : 25

- 25 : 11

- 14 : 11

5.) a. False

b. True

c. False

d. True

e. True

Alice is correct. The ratio is 6 : 9 because the question asks what the ratio is of students playing volleyball (6) TO basketball (9).  

Hope this helped and I answered on time :)

Step-by-step explanation:

What is an equation of the line that passes through the point (-3,-7)(−3,−7) and is parallel to the line 3x-y=53x−y=5?

Answers

Answer:

y  = -3x-14

Step-by-step explanation:

Any line parallel to  

y

=

3

x

+

6

will be in the form  

y

=

3

x

+

c

for some constant  

c

If  

(

x

,

y

)

=

(

3

,

5

)

is a solution to such an equation, then replacing  

y

with  

(

5

)

and  

x

with  

(

3

)

gives

5

=

(

3

)

(

3

)

+

c

5

=

9

+

c

c

=

14

So the desired parallel line would have the equation

y

=

3

x

14

You have at most $3.65 to make copies for a school project. Each copy costs $0.25. Write and solve an inequality that represents the number of copies you can make.

Answers

The equation for the problem is [tex]0.25x[/tex] ≤ [tex]3.65[/tex]

Hope it helps!

You can make the maximum number of copies would be 14.6 which is determined by the inequality 0.25x ≤ 3.65 where x represents the number of copies.

What is inequality?

Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.

What are Arithmetic operations?

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.

You have at most $3.65 to make copies for a school project. Each copy costs $0.25 which is given in the question.

As per the given condition, the required inequality would be:

⇒ 0.25x ≤ 3.65

Here x represents the number of copies

⇒ 0.25x ≤ 3.65

Divided by 0.25 both sides of the inequality, and we get

⇒ x ≤ 3.65/0.25

⇒ x ≤ 14.6

Therefore, you can make the maximum number of copies would be 14.6.

Learn more about inequalities here:

brainly.com/question/20383699

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Three friends entered a race around a track. Edward takes 6 minutes to run one lap. Bernie takes 3 minutes to run one lap and it takes Freddie 5 minutes to run one lap. If all three friends begin the race at the same time, how many minutes will it take for all three friends to be at the starting point again?

Answers

Answer:

It will take 30 minutes

Step-by-step explanation:

Here, we want to calculate the time it will take for the three friends to be at the starting point again

What we do here is to note the time it will take for each of the three friends to run a lap

That will be 6 , 3 and 5

What we now need to know the time is to find the lowest common multiple of the three amount of time

The lowest common multiple of 6,3 and 5 is 30

So the amount of time it will take the friends to be at the starting point again is 30 minutes

Order the numbers from least to greatest.


2.1,−610,−94,−0.75, 53

Answers

-610 -94 -0.75 2.1 53
Answer my latest question please

(2/3) × (-6) × 5

please help me solve and show work​

Answers

Answer:

-20

Step-by-step explanation:

Use PEMDAS

[tex]\frac 2 3 * -6 * 5\\\frac 2 3*-30\\\frac {-60}{3}\\-20[/tex]

If you invest $25.00 at 6% interest compounded monthly,
how much will you have after 1 year?

Answers

A=25(1+0.06/12)^(12)(1), A=25•1.005^12, A=26.54

Find the area and perimeter of a rectangle if the length is (x+7) and the width is (x+3).

Answers

[tex]\sf Length\:=\:(x+7) \\\\\sf

Breadth\:=\:(x+3) \\\\\sf

Area= Length\: x\: Breadth \\\\\sf

=(x+3)(x+7) \\\\\sf

=x^2+7x+3x+21 \\\\\sf

=x^2+10x+21 \\\\\sf

\boxed{Area=x^2+10x+21} \\\\ \\\\\sf

Now, \:Perimeter\:=\: 2x(length +breadth) \\\\\sf

=2(2x+10) \\\\\sf

=4x+20 \\\\\sf

\boxed{Perimeter=4x+20} [/tex]

[tex]l = (x + 3) \\ b = (x + 7)[/tex]

Area:

[tex] = l \times b \\ = (x + 3)(x + 7) \\ = x(x + 7) + 3(x + 7) \\ = {x}^{2} + 7x + 3x + 21 \\ = {x}^{2} + 10x + 21[/tex]

Perimeter:

[tex] = 2(l + b) \\ = 2((x + 3) + (x + 7)) \\ = 2(x + 3 + x + 7) \\ = 2(2x + 10) \\ = 4x + 20[/tex]

What is the equation of the line that passes through the points (-6,-7) and (6,3)

Answers

Answer:

[tex]y=\frac{5}{6} x-2[/tex]

Step-by-step explanation:

Point-slope form:

[tex]y-y_1=m(x-x_1)[/tex]

where [tex](x_1, \ y_1)[/tex] are coordinates of a point that the line passes through, and [tex]m[/tex] is the slope of the line.

We are given two points that the line passes through, but we are not given the slope.

We can find the slope by using the slope formula:

[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

where [tex](x_1, \ x_2)[/tex] and [tex](y_1, \ y_2)[/tex] are two points that the line passes through.

Substitute (-6, -7) and (6, 3) into the slope formula:

[tex]\frac{3-(-7)}{6-(-6)} = \frac{10}{12} = \frac{5}{6}[/tex]

The slope of this line is 5/6. Now we are able to use the point-slope equation to find the slope-intercept equation [tex](y=mx+b)[/tex] of this line.

Substitute a point that the line passes through and the slope of the line into the point-slope equation. I'm using the point (6, 3).

[tex]y-y_1=m(x-x_1)[/tex][tex]y-(3)=\frac{5}{6} (x-(6)[/tex][tex]y-3=\frac{5}{6} (x-6)[/tex]

Distribute 5/6 inside the parentheses.

[tex]y-3=\frac{5}{6} x-\frac{30}{6}[/tex][tex]y-3=\frac{5}{6} x-5[/tex]

Add 3 to both sides of the equation.

[tex]y=\frac{5}{6} x-2[/tex]

This is the equation of the line that passes through (-6, -7) and (6, 3) in slope-intercept form.

If you simplified 10/15 as a fraction what would the answer be

Answers

Answer:

2/3

Step-by-step explanation:

10/15 can be divided by 5

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