Answer:
4y +x =18
Step-by-step explanation:
y - (-5) -1
----------- = ------
x - 2 4
4y +20 = -x+2
4y +x =18
528 a weekend.
10% of 480 is 48
480 + 48 = 528
Answer:
ffhjjrhjzxuzdjzdjzsjezjdifi
"If a = − 8, b = − 7, c = 6, verify that (a+b) + c = a + (b+c)."
Answer:
The commutative property of addition says that changing the order of addends does not change the sum.
(a+b)+c = a+ (b+c)
( -8 + -7) + 6 = -8 + ( -7 + 6)
-15 + 6 = -8 + -1
-9 = -9
Answer:
Hence, proved (a+b) + c = a + (b+c)."
Step-by-step explanation:
first take left hand side and insert the values of a, b, and c and similarly than take right hand side.
L.H.S
(a+b)+c
(-8+(-7))+6
(-8-7)+6
-15+6
-9
R.H.S
a+(b+c)
-8+(-7+6)
-8+(-1)
-8-1
-9
hence, proved (a+b) + c = a + (b+c)."
If a person is chosen at random in this survey, what is the P(decaf or sugar)?
HELP PLS!
The value of the probability P(decaf or sugar) is 0.41
How to determine the probability?From the table, we have:
P(decaf) = 0.05 + 0.08 + 0.09 = 0.22
P(sugar) = 0.19 + 0.08 = 0.27
P(decaf and sugar) = 0.08
The required probability is:
P = P(decaf) + P(sugar) - P(decaf and sugar)
This gives
P = 0.22 + 0.27 - 0.08
Evaluate
P = 0.41
Hence, the value of the probability P(decaf or sugar) is 0.41
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What is the area of this triangle?
Answer:
sum of all sides
Step-by-step explanation:
x1y2 + x3y3 + x1y1
The owner of a fitness watch would like to determine if the mean number of steps he takes per day differs from the recommended 10,000 steps per day, using α = 0.01. He selects a random sample of 50 days with the intention of testing the hypotheses H0:μ = 10,000 steps versus Ha:μ ≠ 10,000 steps where μ = the true mean number of steps taken per day.
Which of the following values of the alternative hypothesis would yield the greatest power to reject the null hypothesis?
A. u = 9,000
B. u = 9,500
C. u = 10,000
D. u = 10,500
Answer:
ok so it could be Careful because think about it 10000x 0.01...
Answer:10,000
Step-by-step explanation:
How would you multiply 4x 2
—
3
( 4 x 2 by 3 (fractions))
Answer:
8/3
Step-by-step explanation:
4 x 2 = 8, so (4 × 2)/2 = 8/3.
The standard deviation for a set of data is 9.5. The mean is 205.
What is the margin of error?
If the standard deviation for a set of data is 9.5. The margin of error is: 19.5.
Margin of errorUsing this formula
Margin of error=Standard deviation×Mean
Let plug in the formula
Margin of error=205 × 9.5%
Margin of error = 19.475
Margin of error = 19.5 (Approximately)
Therefore If the standard deviation for a set of data is 9.5. The margin of error is: 19.5.
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Initially, there were only 86 weeds in the garden. The weeds grew at a rate of 8% each week. The following function represents the weekly weed growth: f(x) = 86(1.08)x. Rewrite the function to show how quickly the weeds grow each day.f(x) = 86(1.08)7x; grows approximately at a rate of 5.6% daily
f(x) = 86(1.087)x; grows approximately at a rate of 0.56% daily
f(x) = 86(1.01)x; grows approximately at a rate of 0.1% daily
Feedback for this selection: Don't forget to multiply the power by 7.
f(x) = 86(1.01)7x; grows approximately at a rate of 1% daily
please explain how you got the answer!
The function represents the weekly weed growth f(x) = 86(1.01)^7x; They grow at approximately the rate of 1% per day.
What is a function?The function is a type of relation, or rule, that maps one input to specific single output.
The following function represents the weekly weed growth:
f(x) = 86(1.08)x.
we'll represent the growth function by day g(x). If x is to represent days, then x/7 represents weeks.
We can write,
g(x) = f(x/7) = 86·1.08^(x/7)
g(x) = 86·(1.08^(1/7))^x
g(x) = 86·1.011055^x
The function represents the weekly weed growth f(x) = 86(1.01)^7x; They grow at approximately the rate of 1% per day.
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A student chose a number, multiplied it by 2, then subtracted 138 from the result and got 102. What was the number he chose?
Answer:
51
Step-by-step explanation:
let's set the starting number as x
1. x times 2 = 2x
2. 2x- 138
3. result = 102
So, 2x-138 = 102
Now lets work backwards to solve for x.
1. 2x = 102
x = 51
So the starting number was 51.
Function: one to one. Help with this math question!
The answer for f.f (x) = 25 / 4x² and g.g(x)= 4x² -28x +49.
What is a Function ?A function is a mathematical statement used to relate a dependent and an independent variable.
It is given that
f(x) = 5/2x
g(x) = 2x - 7
It is asked to found
f.f
g.g
f.f (x) = (5/2x) * (5/2x)
= 25 / 4x²
g.g(x)= ( 2x - 7)( 2x - 7)
= 4x² -28x +49
Both the answers are in its simplified form
Therefore the answer for f.f (x) = 25 / 4x² and g.g(x)= 4x² -28x +49.
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Find area bounded between y=x^2 and y=-(x+2)^2+4
By applying definite integrals and integration rules, the area bounded between the curves f(x) = x² and g(x) = -(x+2)² + 4 is equal to 8 square units.
How to determine the between the two integrals
The points of intersection between the two curves are (x, y) = (0, 0) and (x, y) = (-2, 4). The curve is f(x) = x² and upper curve is g(x) = -(x+2)² + 4. The area between the two curves is defined by this definite integral:
[tex]A = \int\limits^{0}_{-2} {f(x) - g(x)} \, dx[/tex]
[tex]A = \int\limits^{0}_{-2} {f(x)} \, dx - \int\limits^{0}_{-2} {g(x)} \, dx[/tex]
[tex]A = \int\limits^0_{-2} {[-(x+2)^{2}+4]} \, dx -\int\limits^0_{-2} {x^{2}} \, dx[/tex]
[tex]A = -\frac{(x+2)^{3}}{3}|_{-2}^{0} + 4\cdot x|_{-2}^{0}-\frac{x^{3}}{3}|_{-2}^{0}[/tex]
[tex]A = - \frac{2^{3}}{3} + 0 + 4\cdot [0 - (-2)] - 0 + \frac{(-2)^{3}}{3}[/tex]
[tex]A = -\frac{8}{3} + 8 -\frac{8}{3}[/tex]
A = 8
By applying definite integrals and integration rules, the area bounded between the curves f(x) = x² and g(x) = -(x+2)² + 4 is equal to 8 square units.
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Solve the equation for x.
2(x + 4) = 2
5
x = [?]
Answer:
x=1
Step-by-step explanation:
(2(x+4))/5=2
Multiply both sides by 5
2(x+4)=10
Divide both sides by 2
x+4=5
subtract 4 from both sides
x=1
3. What's the difference between 126 1/4 and 78 2/3?
O A. 57 7/12
OB. 47 7/12
O C. 58 5/12
O D. 48 1/3
Answer:
B. 47 7/12
Step-by-step explanation:
=126 1/4 - 78 2/3
Change the two mix fraction to improper fractions.
= 505/4 - 236/3
= 1515-944/12
= 571/12
= 47 7/12
What is the average of the following numbers?
2, 5, 8, 1
Answer:
average of the no. = sum of all no. / no. of terms
= 2 + 5 + 8 + 1 / 4
= 16/4
= 4
4 is the answer
What is the solution, if any, to the inequality |3x|_>0
O all real numbers
O no solution
O x_>0
O x≤0
Answer:
C , x>0
Step-by-step explanation:
anything times 0 is 0 and 3x has to be larger than 0
Triangle LMN is congruent to triangle FGH, as shown.
Go
65
Mark this and return
5-
4
3
321
2-
-6-5-4-3-2-14 2 3 4 5 6
یہ ب
-2
-3
FL
4
5
6
H
X
What is the length of side LM?
units
Next
Submit
Answer: 5
Step-by-step explanation:
If [tex]\triangle LMN \cong \triangle FGH[/tex], this means that [tex]\overline{LM} \cong \overline{FG}[/tex] by CPCTC.
Using the distance formula,
[tex]FG=\sqrt{(-3-0)^{2}+(-4-0)^{2}}=5\\\\\therefore LM=\boxed{5}[/tex]
on a day in winnipeg with 10 1/2 h of daylight, it was sunny for 1/3 of that time. for how many hours was it sunny that day
Considering the multiplication of mixed fractions, [tex]\frac{21}{6}[/tex] or 3.5 hours was sunny that day.
Multiplication of mixed fractionsTo multiply mixed fractions, it is necessary to transform these fractions into improper fractions. To do this, the whole part is multiplied by the denominator of the fraction that accompanies it. The result of the multiplication is added to the numerator of the fraction that accompanies it, and it will be the denominator of the new fraction, while the denominator remains the same.
After transforming the mixed fractions to be multiplied into improper fractions, they are multiplied. To do this, it is necessary to multiply the numerators of the two fractions, and the denominators of the fractions. If the resulting product needs to be simplified to lowest terms, divide the numerator and denominator by common factors.
Sunny hoursOn a day in winnipeg with 10[tex]\frac{1}{2}[/tex] h of daylight, it was sunny for [tex]\frac{1}{3}[/tex] of that time. This is:
10[tex]\frac{1}{2}[/tex] h × [tex]\frac{1}{3}[/tex]
Solving:
10[tex]\frac{1}{2}[/tex] h × [tex]\frac{1}{3}[/tex] = [tex]\frac{10x2+1}{2}[/tex] × [tex]\frac{1}{3}[/tex] = [tex]\frac{21}{2}[/tex] × [tex]\frac{1}{3}[/tex] = [tex]\frac{21x1}{2x3}[/tex]= [tex]\frac{21}{6}[/tex]= 3.5
Finally, [tex]\frac{21}{6}[/tex] or 3.5 hours was sunny that day.
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The slope equals zero and it passes through the point (x, y) = (1, −6).
Answer:
i think the answe is. y=0x-6
Where r is the radius of the cylinder and h is the height of the cylinder. Find the surface area when r is 3 inches and h
is 5 inches.
A. 48 in²
B. 80% in²
c. 112 in²
D. 50% in²
Answer:
48π
Step-by-step explanation:
→ State the formula for the surface area of a a cylinder
2π × r × h + 2π × r²
→ Substitute in the numbers
2π × 3 × 5 + 2π × 3²
→ Simplify
48π
Galaxy Star Corporation purchased goods for $100,000 from Sunrise
Materials. Galaxy Star Corporation can avail a discount of 2.5% if the
payment is made within 20 days. However, the full payment will be made
if the payment is made after 20 days.
If Galaxy Star Corporation pays within 20 days, which of the
following entries will it pass?
The entry that it will pass on the accounting book based on the information about Galaxy Star Corporation is the credit sales.
What is a credit sale?It should be noted that credit sales are the sales where the amount that is owed will be paid at alter date.
From the information given, we were informed that the payment will be made after 20 days. Therefore, the appropriate entry will be in town credit sales.
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A local baseball stadium has a total of 2,497 seats, with 210 seats reserved for season ticket holders.
If x represents the number of non-reserved seat tickets sold for the upcoming game, which of the following equations can be used to find the number of seats available for the upcoming game?
y = 2,497 - 210x
B.
y = 2,287 - 210x
C.
y = 2,287 - x
D.
y = 2,497 - x
Answer:
I believe d would be the answer.
Step-by-step explanation:
Please help !!! I will give 20 points to correct answer !!!!
Answer:
the answer above the image
Answer:
a=-4/3, 14/3
Step-by-step explanation:
absolute value only makes the answer become positive whether the value inside is negative or positive.
so -3a+5=9 or -3a+5=-9 all works
-3a+5=9
-3a=4
a=-4/3
If -3a+5=-9
-3a=-14
a=14/3
Use slopes and y-intercepts to determine if the lines 10x+3y=−3 and 5x−4y=−3 are parallel.
Answer:
They are not parallel
Step-by-step explanation:
original equation
10x + 3y = -3
subtract 10x
3y = -10x - 3
divide by 3
y = -10/3x - 1
original equation
5x - 4y = -3
subtract 5x
-4y = -5x-3
divide by -4
y = 5/4x + 3/4
the slopes are not equal to each other (5/4x and -10/3x) so they are not parallel
A tunnel is constructed with a semielliptical arch. The width of the tunnel is 60 feet, and the maximum height at the center of the tunnel is 25 feet. What is the height of the tunnel 5 feet from the edge? Round your answer to the hundredths place.
9.99 feet
13.82 feet
24.65 feet
25.01 feet
The height of the tunnel 5 feet from the edge is 13.82 feet option second 13.82 feet is correct.
What is an ellipse?An ellipse is a locus of a point that moves in a plane such that the sum of its distances from the two points called focus adds up to a constant. It is taken from the cone by cutting it at an angle.
We have:
A tunnel is constructed with a semi-elliptical arch. The width of the tunnel is 60 feet, and the maximum height at the center of the tunnel is 25 feet.
2a = 60 (width of the tunnel is 60 feet)
a = 30
And the maximum height at the center of the tunnel is 25 feet
b = 25
Let's assume the center of the ellipse is at the origin.
So the equation of the ellipse:
[tex]\rm \dfrac{x^2}{30^2}+\dfrac{y^2}{25^2}=1[/tex]
Now plug x = a - 5 = 30 - 5 = 25
[tex]\rm \dfrac{25^2}{30^2}+\dfrac{y^2}{25^2}=1[/tex]
After solving:
[tex]\rm \dfrac{y^2}{25^2}=1-\dfrac{25}{36}[/tex]
[tex]\rm y^2=\dfrac{6875}{36}[/tex]
y = ±13.819 ≈ ±13.82
Height cannot be negative
y = 13.82 feet
Thus, the height of the tunnel 5 feet from the edge is 13.82 feet option second 13.82 feet is correct.
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A class of students consists of 9 men and 51 women. Write a proper fraction to represent the part of the class that is women. Reduce the fraction. Change the fraction to a percent.
Answer:
85%
Step-by-step explanation:
9+51 = 60
(51/3) ÷ (60/3) = 17/20
(17/20)% = 85%
Question in image, it asks to show your work
Answer:
• f(g(x)) = [tex]\sqrt{x^{2} + 1}[/tex] + 8
• g(f(x)) = 16[tex]\sqrt{x}[/tex] + x + 65
Step-by-step explanation:
• f(g(x)) = f(x² + 1)
= [tex]\sqrt{x^{2} + 1}[/tex] + 8
• g(f(x)) = g([tex]\sqrt{x + 8}[/tex] )
= [tex](\sqrt{x } + 8)^{2}[/tex] + 1
= x + 16[tex]\sqrt{x}[/tex] + 64 + 1
= 16[tex]\sqrt{x}[/tex] + x + 65
Find the perimeter of a rectangle whose leath in 223 and width is 3/2. Find the perimeter of a rectangle whose leath in 223 and width is 3/2 .
Answer:
449 units
Step-by-step explanation:
Perimeter of a rectangle = 2(a+b)
= 2(223+3/2)
=449 units
Can someone please solve
Answer: [tex]\sqrt{7}[/tex]
Step-by-step explanation:
Using the Pythagorean theorem,
[tex]3^2 + b^2 = 4^2\\\\9+b^2 = 16\\\\b^2 = 7\\\\b=\boxed{\sqrt{7}}[/tex]
(5+3√2)² simplify the following
Answer:
[tex](5+3\sqrt{2} )^{2} =43+30\sqrt{2}[/tex]
≈85.43
Step-by-step explanation:
apply the binomial theorem to the square
[tex]=(5)^{2} +2(5)(3\sqrt{2} )+(3\sqrt{2} )^{2}[/tex]
[tex]=25+30\sqrt{2} +18\\[/tex]
[tex]=43+30\sqrt{2}[/tex]
≈85.43
Hope this helps
Hello!
Here, we apply the algebraic identity :
[tex]\boxed {(a + b)^{2} = a^{2} + 2ab + b^{2}}[/tex]
Let's solve!
⇒ (5 + 3√2)²
⇒ (5)² + 2(5)(3√2) + (3√2)²
⇒ 25 + 30√2 + 18
⇒ [tex]\boxed {43 + 30\sqrt{2}}[/tex]
∴ The final answer will be 43 + 30√2.
what is ⅛ in a percentage form
Answer:
12.5%
Step-by-step explanation:
1/8 × 100% = 12.5%
So 9f you multiply an eighth by one hundred percent and simplify accurately you'll get 12.5%
