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3 years ago

Anybody know the answer?

Mathematics

1 answer:

Darya [45]3 years ago

8 0

Sure. We see all three right triangles are similar since each has corresponding congruent angles. We can think of them as all having a common three way ratio:

short leg : long leg : hypotenuse

In the smallest triangle the short leg is a+5 and the long leg is 12.

In the medium triangle the short leg is 12 and the long leg is 18

So the relevant ratio is

(a+5) / 12 = 12 / 18

a+5 = 12 × 2/3

a = 8 - 5

a = 3

Answer: A. 3

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andre [41]

Answer:

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Step-by-step explanation:

We can find the slope using this formula: $\frac{y_{2} }{x_{2} } -\frac{y_{1} }{x_{1} }$

$\frac{6}{0} -\frac{9}{-3} =$

$\frac{6}{0} -(-\frac{9}{3} )=$

$\frac{6}{0} +\frac{9}{3} =$

$\frac{15}{3} =$

The slope of the line is 5.

To find point slope form, we use the equation y=mx+b where m is the slope and b is the y-intercept.

The y-intercept of this slope is 6 and the slope is 5 so we get, y=5x+6

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3 years ago

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gizmo_the_mogwai [7]

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Step-by-step explanation:

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2 years ago

Your school wants to have 5 computers for every 12 students.There are now 125 computers and 924 students.How many more computers

Oksana_A [137]

First, determine the number of computers that are needed for 924 students.

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3 years ago

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morpeh [17]

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2. 10cm

3. 20cm

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Step-by-step explanation:

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zaharov [31]

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Step-by-step explanation:

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