3 years ago

Pre Calculus, please help?

Mathematics

1 answer:

barxatty [35]3 years ago

4 0

Hold up I need to ask my older brother to help with this one

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8_murik_8 [283]

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2 years ago

A life guard in a tower 20 ft above sea level spots a struggling surfer at an angle of depression of 15 . How far is the surfer

GalinKa [24]

Answer: $19.31\ ft$

Step-by-step explanation:

Given

The tower is at a height of $h=20\ ft$

the angle of depression is $15^{\circ}$

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$\therefore \text{From the figure, we can write}\\\\\Rightarrow \cos 15^{\circ}=\dfrac{x}{h}\\\\\Rightarrow x=h\cos 15^{\circ}\\\Rightarrow x=20\cos 15^{\circ}\\\Rightarrow x=19.31\ ft$

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3 years ago

What is -3x-3y=3 y=-5x-17 for substitution please show steps

Snowcat [4.5K]

Take -5x + 3x = -2x

because there is a -3x and a 3x they cancel each other out.

and the -17 is left

-2x = -17

divide -2 by -17 = 8.5

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3 years ago

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Tpy6a [65]

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3 years ago

A rectangular prism has a length of 12in, a height of 5in, and a width of 8in. What is its volume, in cubic in?

cupoosta [38]

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Step-by-step explanation:

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3 years ago

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