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2 years ago

Find the value of −12 + 8 −(−9). Question 20 options: 5 −13 −5 13

Mathematics

1 answer:

larisa86 [58]2 years ago

3 0

Answer:

-12 + 8 = -4

-4 - (-9) = -4 + 9 = 5

Step-by-step explanation:

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Question : <br> 3x-9y+12=?

PSYCHO15rus [73]

Simplifyiing
the greatest common factor is 3 so

3x - 9y + 12 = 3(x - 3y + 4)

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3 years ago

Dividing with remainders

mojhsa [17]

Answer:

im not sure but i think 3

Step-by-step explanation:

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3 years ago

What is the value of x? Then determine the measure of each angle. will brainlist first correct answer

kherson [118]

Answer:

Step-by-step explanation:

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2 years ago

Laws of Sines with find the angle.

Jobisdone [24]

A divide by sin A = b divide by sin B
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3 years ago

Read 2 more answers

g A 5 foot tall man walks at 10 ft/s toward a street light that is 20 ft above the ground. What is the rate of change of the len

vredina [299]

Answer:

$-\frac{10}{3}ft/s$

Step-by-step explanation:

We are given that

Height of man=5 foot

$\frac{dy}{dt}=-10ft/s$

Height of street light=20ft

We have to find the rate of change of the length of his shadow when he is 25 ft form the street light.

ABE and CDE are similar triangle because all right triangles are similar.

$\frac{20}{5}=\frac{x+y}{x}$

$4=\frac{x+y}{x}$

$4x=x+y$

$4x-x=y$

$3x=y$

$3\frac{dx}{dt}=\frac{dy}{dt}$

$\frac{dx}{dt}=\frac{1}{3}(-10)=-\frac{10}{3}ft/s=-\frac{10}{3}ft/s$

Hence, the rate of change of the length of his shadow when he is 25 ft from the street light= $-\frac{10}{3}ft/s$

7 0

3 years ago