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3 years ago

Find the percent change from 70 to 56.

Mathematics

2 answers:

Hitman42 [59]3 years ago

8 0

Answer:

-20%

Step-by-step explanation:

If you see the values, I see a change from 70 (old) to 56 ( new ) as a decrease . Therefore using the Percent change formula : [(56-70)]/76]*100% = (-14/70)x 100% = -0.2 x 100% = - 20%

exis [7]3 years ago

5 0

Answer:

The answer is -20%

Step-by-step explanation:

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Step-by-step explanation:

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Naya [18.7K]

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3 years ago

two buildings are 60 feet apart across a street. A person on top of the shorter building finds the angle of elevation of the roo

inessss [21]

Answer:

The height of the taller building is $64\ ft$

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the value of h1

with the angle of elevation

we know that

$tan(20\°)=\frac{h1}{60}$

$h1=60*tan(20\°)$

step 2

Find the value of h2

with the angle of depression

we know that

$tan(35\°)=\frac{h2}{60}$

$h2=60*tan(35\°)$

step 3

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3 years ago

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What is the equation of the line that passes through the points (–2, 2) and (0, 5)?

lana66690 [7]

Answer:

The equation of line is given by

$y=\frac{3}{2}x+5$

Step-by-step explanation:

We have been given the points (–2, 2) and (0, 5) and we have to find the equation of the line.

Let us first find the slope of the line using the formula

$m=\frac{y_2-y_1}{x_2-x_2}$

On substituting the values, we get

$m=\frac{5-2}{0+2}$

$m=\frac{3}{2}$

Now, using the point slope form, the equation of line is given by

$y-y_1=m(x-x_1)\\y-2=\frac{3}{2} (x+2)\\\\y-2=\frac{3}{2}x+3\\\\y=\frac{3}{2}x+5$

Therefore, the equation of line is given by

$y=\frac{3}{2}x+5$

6 0

4 years ago

Read 2 more answers