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3 years ago

Factor the expression. 9y^2– 36

Mathematics

1 answer:

Nata [24]3 years ago

5 0

Answer:

Answer: 9 (y - 2) (y + 2)

Step-by-step explanation:

Factor the following:

9 y^2 - 36

Factor 9 out of 9 y^2 - 36:

9 (y^2 - 4)

y^2 - 4 = y^2 - 2^2:

9 (y^2 - 2^2)

Factor the difference of two squares. y^2 - 2^2 = (y - 2) (y + 2):

Answer: 9 (y - 2) (y + 2)

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Point-slope of line's equation (-3,-7),(-8-11)

Nataly_w [17]

Steps:
1. Find the slope by using the slope formula
Y2-Y1
---------
X2-X1

-11 + 7
----------
-8 + 3
2.
-11 + 7= -4
-8 + 3= -5
3. Your slope is 4/5 (because you have to turn two negatives into a positive)
4. Now you do the point-slope formula
Y-Y1= m(x-x1)
Y +7=4/5 (x +3)

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3 years ago

Select the story problem that this equation represents 1/2 / 2/5

grin007 [14]

Answer:

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Step-by-step explanation:

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3 years ago

Answer all worth 50 points

vredina [299]

<h2>Figure 1</h2>

Answer: 350

Formula: W × H × L

7 × 5 × 10 = 350

<h2>Figure 2</h2>

Answer: 288

Formula: $\frac{1}{2}bhl$

$\frac{1}{2}\times8\times6\times12=288$

<h2>Figure 3</h2>

Answer: 14.7

Formula: $\frac{1}{2} bhl$

$\frac{1}{2}\times4.2\times2\times3.5=14.7$

<h2>Figure 4</h2>

Answer: 4.29

Formula: W × H × L

2.6 × 1.5 × 1.1 = 4.29

<h2>Figure 5</h2>

Answer: 60

Formula: W × H × L

4 × 3 × 5 = 60

<h2>Figure 6</h2>

Answer: 27.2

Formula: $\frac{1}{2} bhl$

$\frac{1}{2}\times4.1\times2.6\times5.1$

<h2>Figure 7</h2>

Answer: $117\frac{223}{256}$

Formula: L × W × H

$8\frac{7}{8}\times4\frac{1}{4}\times3\frac{1}{8} =\frac{30175}{256}=117\frac{223}{256}$

<h2>Figure 8</h2>

Answer: 86.4

Formula: $\frac{1}{2} bhl$

$\frac{1}{2}\times6.1\times4.8\times5.9=86.4$

Explanation: To find the volume for a rectangular prism, multiply the Length, Width and Height. To find the volume for a triangular prism, multiply the Base, Height and Length by 1/2.

6 0

3 years ago

Which number sentence is true?

aliya0001 [1]

The answer is A) 1,73<2,1

3 0

3 years ago

On the way to school, if the ratio of walkers to bus riders is 2:7, then the number of bus riders is ________ times the number o

Serggg [28]

On the way to school, if the ratio of walkers to bus riders is 2:7, then the number of bus riders is 3.5 times<span> the number of walkers.</span>

Explanation:
7 is 3.5 times larger than 2.
2×3.5 = 7

Answer: 3.5

5 0

3 years ago