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3 years ago

Please help as much as you can and also explain how you got the answer

Mathematics

1 answer:

defon3 years ago

4 0

Ok so for number 5. the formula for the surface area of a rectangular prism is 2(wl+hw+hl)

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Find (f • g) when f(x) = x^2 + 5x + 6 and g(x) = 1/x+3

Nikitich [7]

Answer:

option D

Step-by-step explanation:

$f(x) = x^2 + 5x + 6$

$g(x)= \frac{1}{x+3}$

(fog)(x) = f(g(x))

Plug in g(x) in f(x)

We plug in 1/x+3 in the place of x in f(x)

$f(g(x))= f(\frac{1}{x+3})= (\frac{1}{x+3})^2 + 5(\frac{1}{x+3}) + 6$

To simplify it we take LCD

LCD is (x+3)(x+3)

$\frac{1}{(x+3)(x+3)}+5\frac{1*(x+3)}{(x+3)(x+3)}+\frac{6(x+3)(x+3)}{(x+3)(x+3)}$

$\frac{1}{x^2+6x+9}+\frac{(5x+15)}{x^2+6x+9}+\frac{6x^2+36x+54}{x^2+6x+9}$

All the denominators are same so we combine the numerators

$\frac{1+5x+15+6x^2+36x+54}{x^2+6x+9}$

$\frac{6x^2+41x+70}{x^2+6x+9}$

Option D is correct

8 0

2 years ago

Read 2 more answers

. The perimeter of a rectangle is the sum of all the sides. If you were to walk around a football field whose length is 360 feet

iVinArrow [24]

False because you walk both the sides so you would have to do 360x2 added to 160x2

5 0

3 years ago

Round the following factors to estimate the products

poizon [28]

Step-by-step explanation:

597 rounding would be 600 while 52 would be 50.

So 600 x 50

= 30,000

7 0

2 years ago

The Table Shows The Number Of Rows Of Bricks A Worker Can Lay In Different Numbers Of Hours

klemol [59]

The answer is 3. If you set it up in a T table and label x as the number of hours and y as the number of rows. Then use rise over run (y over x) the fractions simplify to 3 over 1.

4 0

2 years ago

Which graph????????????

Marina86 [1]

Answer:

that one of course

Step-by-step explanation:

its THAT one

5 0

2 years ago