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2 years ago

5

There are 140 cars in a parking lot.Bob looks at 15 cars and finds out that 2 cars are gray-colored. Approximately how many cars

in the parking lot are gray-colored?

1 answer:

daser333 [38]2 years ago

4 0

Answer:

about 18.7

Step-by-step explanation:

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As president of the soccer club, Joey had to order pins for the entire club. He knew there were 96 boys in the club, but did not

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Answer:

160 pins

Step-by-step explanation:

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2 years ago

Please help as soon as possible! Thank you so much!!

N76 [4]

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3 years ago

Read 2 more answers

A. Use composition to prove whether or not the functions are inverses of each other. B. Express the domain of the compositions u

Kryger [21]

Given: $f(x) = \frac{1}{x-2}$

$g(x) = \frac{2x+1}{x}$

A.)Consider

$f(g(x))= f(\frac{2x+1}{x} )$

$f(\frac{2x+1}{x} )=\frac{1}{(\frac{2x+1}{x})-2}$

$f(\frac{2x+1}{x} )=\frac{1}{\frac{2x+1-2x}{x}}$

$f(\frac{2x+1}{x} )=\frac{x}{1}$

$f(\frac{2x+1}{x} )=1$

Also,

$g(f(x))= g(\frac{1}{x-2} )$

$g(\frac{1}{x-2} )= \frac{2(\frac{1}{x-2}) +1 }{\frac{1}{x-2}}$

$g(\frac{1}{x-2} )= \frac{\frac{2+x-2}{x-2} }{\frac{1}{x-2}}$

$g(\frac{1}{x-2} )= \frac{x }{1}$

$g(\frac{1}{x-2} )= x$

Since, $f(g(x))=g(f(x))=x$

Therefore, both functions are inverses of each other.

B.

For the Composition function $f(g(x)) = f(\frac{2x+1}{x} )=x$

Since, the function $f(g(x))$ is not defined for $x=0$ .

Therefore, the domain is $(-\infty,0)\cup(0,\infty)$

For the Composition function $g(f(x)) =g(\frac{1}{x-2} )=x$

Since, the function $g(f(x))$ is not defined for $x=2$ .

Therefore, the domain is $(-\infty,2)\cup(2,\infty)$

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3 years ago

The difference between a number,x, and 4 is 9. find the number

Elena-2011 [213]

let's set up an equation:

x-4=9

solve normally:

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3 years ago

Find the lateral area of the right triangular prism below.<br> 5 in, 12 in, 13 in

labwork [276]

Step-by-step explanation:

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3 years ago