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3 years ago

Which function is the reverse of f(x)=-5x-4

Mathematics

1 answer:

Elena L [17]3 years ago

8 0

$f(x)=-5x-4\\
y=-5x-4\\
5x=-y-4\\
x=-\dfrac{1}{5}y-\dfrac{4}{5}\\\\
f^{-1}(x)=-\dfrac{1}{5}x-\dfrac{4}{5}\\\\$

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How much do you make annually at 15 dollars an hour 23 hours a week?

ahrayia [7]

You multiply $15 by 23 which is 345. Then you multiply 345 by 52 for there is 52 in a year. The answer $17940.

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3 years ago

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PLEASE HELP I WILL GIVE BRAINLIEST IF 2 PEOPLE ANSWER! Find the area of a square with side length x when x is equal to the given

Talja [164]

Answer:

The area of the square is 15²

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Step-by-step explanation:

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3 years ago

In UVW, UV IXY. Given that WU= 35, WX= 15, and WY= 18, find WV.

olchik [2.2K]

Answer:

WV = 42

Step-by-step explanation:

Δ UVW and Δ XYW are similar ( by the AA postulate ) , then the ratios of corresponding sides are in proportion, that is

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3 years ago

A figure is broken into a rectangle and a triangle. The triangle has a base of 2 and two-thirds feet and height of 3 feet. The r

ohaa [14]

Answer:

$b=2\frac23\:\sf ft$

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Area of rectangle = $6\frac23\: \sf ft^2$

Area of irregular figure = $10\frac23\: \sf ft^2$

Step-by-step explanation:

$\begin{aligned}\sf Base\:of\:triangle\:(b) & = 5-2\frac13\\\\& = \dfrac{15}{3}-\dfrac73\\\\ & = \dfrac83\\\\ & = 2\frac23\:\sf ft \end{aligned}$

$\begin{aligned}\sf Area\:of\:a\:triangle & =\dfrac12 \sf \times base \times height\\\\& = \dfrac12 \times b \times 3\\\\ & = \dfrac12 \times \dfrac83 \times \dfrac31\\\\ & = \dfrac{24}{6}\\\\ & = 4\: \sf ft^2\end{aligned}$

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$\begin{aligned} \sf Area\:of\:irregular\:figure & = \sf area\:of\:triangle+area\:of\:rectangle\\\\ & = 4 + 6\frac23\\\\ & = 10\frac23\: \sf ft^2\end{aligned}$

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2 years ago

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-5+2a=4a-4-3a help plz and thank you

sattari [20]

Answer:

a=1

Step-by-step explanation:

To make this easier, combine like terms first.

-5+2a=4a-4-3a

-5+2a=a-4

Then, add 5 on both sides.

-5+2a=a-4

2a=a+1

Now, subtract a on both sides.

2a=a+1

a=1

Hope this helps you out!!!! Have an amazing day :3

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