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2 years ago

Please help!!! (link attached)

Mathematics

1 answer:

Softa [21]2 years ago

8 0

The slope is -5!

Explanation:
Start from the top point and you count down until you’re on the same line as the other dot. You should have counted down 5 and over 1. 5/1. The line is negative, therefore it’s -5!

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(2x-2) (x+5) what does x =

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1 year ago

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PLEEAASE HEELP!!!!!!!!!

Vlad1618 [11]

Hello :
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2 years ago

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A flagpole is located at the edge of a sheer y = 70-ft cliff at the bank of a river of width x = 40 ft. See the figure below. An

Gnom [1K]

I would solve this using tangents. Let h be height of flagpole.
Set up 2 right triangles, each with a base of 40.
The larger triangle has height of "h+70"
Smaller triangle has height of 70.

Now write the tangent ratios:
$tan A = \frac{h+70}{40} , tan B = \frac{70}{40}$

Note: A-B = 9
To solve for h we need to use the "Difference Angle" formula for Tangent
$tan (A-B) = \frac{tanA - tanB}{1+tan A tan B}$
Plug in what we know:
$tan(9) = \frac{ \frac{h+70}{40} - \frac{70}{40}}{1+ (\frac{h+70}{40})(\frac{7}{4})}$
$tan (9) = \frac{ \frac{h}{40}}{ \frac{7h +650}{160}} = \frac{4h}{7h+650}$
$h = \frac{650 tan(9)}{4-7 tan(9)}$
$h = 35.6$

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3 years ago

Allen is given three lengths of rope: 4 feet, 8 feet, and 15 feet. Can Allen form a triangle with side lengths of 4 feet, 8 feet

Nady [450]

B) No, set of side lengths does not satisfy Triangle Inequality Theorem

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3 years ago

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3+(-7) solve for x help meee

garik1379 [7]

Answer:

3 + ( -7 )

7 - 3

= 4 is the answer

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3 years ago