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3 years ago

A little help??????????????

Mathematics

2 answers:

kykrilka [37]3 years ago

6 0

Answer:

well it seems the first one is B. The second one is A

Step-by-step explanation:

hope it helps

have a great day

Paul [167]3 years ago

5 0

Answer:

b for the first one and A for the second

Step-by-step explanation:

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

olchik [2.2K]

Answer:

$(f\circ g)(x)=\frac{1}{x^{2}}+\frac{8}{x}+12$

Step-by-step explanation:

Given that $f (x) = x^{2}+6x+5$ and $g(x)=\frac{1}{x}+1$ are the functions.

To find $(f\circ g)(x)$ with the given two functions. ie., to find the composite function of f(x) and g(x) which is denoted by $(f\circ g)(x)$

$(f\circ g)(x)=f(g(x))$

$=f(\frac{1}{x}+1)$

$=({\frac{1}{x}+1})^{2}+6\times ({\frac{1}{x}+1})+5$

$=\frac{1}{x^{2}}+\frac{2}{x}+1+\frac{6}{x}+6+5$

$=\frac{1}{x^{2}}+\frac{8}{x}+12$

Therefore $(f\circ g)(x)=\frac{1}{x^{2}}+\frac{8}{x}+12$

Therefore the composite function of f(x) and g(x) is $(f\circ g)(x)=\frac{1}{x^{2}}+\frac{8}{x}+12$

7 0

4 years ago

4. Use the diagram below to answer the question

ludmilkaskok [199]

Answer:

≈ 397 m

Step-by-step explanation:

Using Pythagoras' identity on the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.

Let h represent the height of the balloon above ground, then

h² + 50² = 400², that is

h² + 2500 = 160000 ( subtract 2500 from both sides )

h² = 157500 ( take the square root of both sides )

h ≈ 397 m ( to the nearest metre )

4 0

3 years ago

Lena estimated the volume of her bathtub to be 47 gal . The actual volume of her bathtub was 42 gal . Find the absolute error an

Andreyy89

Answer:

her estamint should be 40

Step-by-step explanation:

she over floded the tub because of it

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4 years ago

If f(x)=7x-3 and g(x)=x^2-4x, find (f+g)(x).

mote1985 [20]

(f+g)(x) is equivalent to f(x) + g(x)

So that would be (7x-3) + (x²-4x) = x² + 7x - 4x - 3 = x² + 3x - 3

Hope this helps.

8 0

4 years ago

Select all numbers that are solutions to the inequality k>5

Darina [25.2K]

Answer:

its c d and e they're all greater than 5

7 0

3 years ago