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3 years ago

Is this wrong?

Mathematics

1 answer:

sammy [17]3 years ago

4 0

Step-by-step explanation:

The last step is a little wrong. Lemme show you:

x(x + 2) + (x + 2)

Imagine there is an invisible '1' infront of (x + 2) like this:

= x(x + 2) + 1(x + 2)

Now we can combine the like terms together:

= (x + 1)(x + 2)

This is the correct factorization.

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A group of preschoolers has 15 boys and 12 girls. What is the ratio of girls to boys.Also pls show me how u get it.

Over [174]

Answer:

12:15

Step-by-step explanation:

girls:boys

12 to 15

even though 15 is first in the problem, the question is asking girls to boys not boys to girls

comment if u need me to explain more :)

6 0

3 years ago

2/3 of a cherry pie is left .Supposed 4 friends want to share it equally what fraction names how much the whole pie each friend

ycow [4]

You would divide the 2/3 by 4 which would be 1.6 recurring and then put that back into a fraction which would be 1/6. I'm not sure if his is correct but this what is learnt ♡♡chyna

8 0

4 years ago

Read 2 more answers

Find the height of a cone when its diameter is 8 inches and the volume is 100 cubic inches

Aloiza [94]

Answer:

$\frac{75}{4\pi }$ inches or approximately 5.97 inches

Step-by-step explanation:

Use the cone volume formula: V = $\pi$ r² $\frac{h}{3}$

The diameter is 8 inches, so the radius will be 4 inches.

Plug in the radius and volume, and solve for h

V = $\pi$ r² $\frac{h}{3}$

100 = $\pi$ (4²)( $\frac{h}{3}$ )

100 = 16 $\pi$ $\frac{h}{3}$

Divide each side by 16 $\pi$

$\frac{25}{4\pi }$ = $\frac{h}{3}$

Cross multiply and solve for h:

4 $\pi$ h = 75

h = $\frac{75}{4\pi }$

So, the cone's height is $\frac{75}{4\pi }$ or approximately 5.97 inches

7 0

3 years ago

3y-27=5y+9-y<br> please help

faltersainse [42]

Answer:

y=−36

Hope this helps

3 0

3 years ago

Read 2 more answers

Please help me!! I really need it

madreJ [45]

Answer:

1/36

Step-by-step explanation:

P( red die is 6) = number of 6/ total = 1/6

P( green die is 6) = number of 6/ total = 1/6

P( red is 6 and green is 6) = P( red die is 6) *P( green die is 6)

=1/6*1/6

=1/36

3 0

4 years ago