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3 years ago

[ f(x) = 3x + 2 g(x) = x2 Find gf(5) Find fg(x)

Mathematics

1 answer:

marusya05 [52]3 years ago

8 0

Answer:

gf(5) = 289.

fg(x) = 3x^2 + 2.

Step-by-step explanation:

f(5) = 3(5) + 2 = 17

So gf(5) = 17^2 = 289.

fg(x) = 3(x^2) + 2 (we replace the x in f(x) by g(x)).

= 3x^2 + 2.

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3 years ago

. 4.5w = 5.1W - 30 please help me with this question pls show the work

inn [45]

Answer: w = 50

Step-by-step explanation:

4.5w - 5.1w = -30

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3 years ago

How many solutions does this equation have?

mars1129 [50]

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3 years ago

Read 2 more answers

Find the difference between8/15 and 2/3 Show all calculations in your final answer.

kherson [118]

Answer:

$\frac{8}{15}-\left(\frac{-2}{3}\right)=\frac{6}{5}$

Step-by-step explanation:

Let the value of a number 'a' be = 8/15

Let the value of a number 'b' be = 2/3

The difference between the two numbers can be calculated by subtracting the numbers

$a-b=\frac{8}{15}-\left(\frac{-2}{3}\right)$

$\mathrm{Remove\:parentheses}:\quad \left(a\right)=a$

$=\frac{8}{15}-\frac{-2}{3}$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}$

$=\frac{8}{15}-\left(-\frac{2}{3}\right)$

$\mathrm{Apply\:rule}\:-\left(-a\right)=a$

$=\frac{8}{15}+\frac{2}{3}$

$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}$

$=\frac{8+10}{15}$

$=\frac{18}{15}$

$\mathrm{Cancel\:the\:common\:factor:}\:3$

$=\frac{6}{5}$

Thus,

$\frac{8}{15}-\left(\frac{-2}{3}\right)=\frac{6}{5}$

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3 years ago

A research team aboard an underwater research vessel descends 1,500 feet beneath the surface of the water. They then rise 525 fe

Helga [31]

Answer:

-1,325 ft below sea level

Step-by-step explanation:

0(surface level) - 1,500 = -1,500

-1,500 + 525 = -975

-975 - 350 = -1,325

7 0

3 years ago

Read 2 more answers