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3 years ago

If m = 10x + 4 and m= 5x – 4, find m

2 answers:

8 0

Hello MckenzieMoore25, first you would need to solve for x for both equations which then you can plugin and easily find m. Hopefully this can guide you to the answer your looking for! :)

Paladinen [302]3 years ago

3 0

Equate m=m
10x+4=5x-4
subtract 4 from both sides,
10x+4-4=5x-4-4
10x=5x-8
subtract 5x from both sides
10x-5x=5x-5x-8
5x=-8
divide 5 on both sides
5x/5=-8/5
x=-8/5

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4 years ago

Read 2 more answers

2(x + 4)2 = 20 solve by square roots

DanielleElmas [232]

Answer:

x = − 4 ± √ 10,

Step-by-step explanation:

2(x + 4)² = 20

=> 2(x + 4) (x + 4) = 20

=> 2x + 8 (x + 4) = 20

=> 2x² + 8x + 8x + 32 = 20

=> 2x² + 16x + 32 = 20

=> 2x² + 16x + 12 = 0

=> Now solve using the quadratic formula:

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3 years ago

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4 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]

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Step-by-step explanation:

Given

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

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

Therefore, the surfer is at a distance of 19.31 ft from the base of the tower.

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