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nataly862011 [7]

3 years ago

13

I think I got the answer correct and someone please check it

1 answer:

serg [7]3 years ago

7 0

3 1/4* 1 1/3

mutiply the whole numbers

3*1= 3

mutiply the numerators

1*1= 1

mutiply the denominators

4*3= 12

Answer:

3 1/12 - second choice

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Need help with this....

Yakvenalex [24]

Answer:

$\boxed{\dfrac{f(a+h)-f(a)}{h}=-3a^2-3ah-h^2}$

Step-by-step explanation:

$f(x)=-x^3+2\\\\\dfrac{f(a+h)-f(a)}{h}\\\\f(a+h)\to\text{substitute x = a + h}\\f(a)\to\text{substitute x = a}\\\\\dfrac{f(a+h)-f(a)}{h}=\dfrac{-(a+h)^3+2-(-a^3+2)}{h}\\\\\text{use}\ (x+y)^3=x^3+3x^2y+3xy^2+y^3\\\\=\dfrac{-(a^3+3a^2h+3ah^2+h^3)+2-(-a^3)-2}{h}\\\\=\dfrac{-a^3-3a^2h-3ah^2-h^3+2+a^3-2}{h}\\\\\text{combine like terms}$

$=\dfrac{(-a^3+a^3)-3a^2h-3ah^2-h^3+(2-2)}{h}\\\\=\dfrac{-3a^2h-3ah^2-h^3}{h}\\\\=\dfrac{h(-3a^2-3ah-h^2)}{h}\\\\=-3a^2-3ah-h^2$

6 0

3 years ago

The rectangle below has an area of c^2-4x-12 square meters and a length of x+2 meters what expression represents the width of th

Korolek [52]

Answer:

Width = $\frac{c^2 - 4x - 12 }{x+2}$

Step-by-step explanation:

All we have to do is to use the method of changing the subject. First we know that length * width is equal to area.

Area = length * width

We have the area and the length but we don't have the width. So we substitute the values we have int the equation and make the width (w) the subject.

(c^2 - 4x - 12) = (x + 2) * w

(c^2 - 4x - 12) = w(x +2)

Divide both sides by (x+2) so w can stand alone.

$\frac{c^2 - 4x - 12}{x+2} = \frac{w(x+2)}{x+2}$

w = $\frac{c^2 - 4x - 12 }{x+2}$

5 0

3 years ago

Rafael is on his way home in his car. His drive is 22 miles long. He has finished one-half of the drive so far, how far has he d

Bogdan [553]

Answe

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Please help asap..............

Evgen [1.6K]

Answer:

what's the context of this?

6 0

3 years ago

(Click on Photo, I’ll mark as Brainliest!)

Semenov [28]

Ok I did, do you need me to tell you the answers for the missing ones? Let me know, I can just do it in the calculator haha

5 0

3 years ago