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2 years ago

What is the y-intercept of y = -32x - 2?

Mathematics

2 answers:

GREYUIT [131]2 years ago

7 0

The y intercept is -2

Maru [420]2 years ago

5 0

Answer:

Y- intercept = -2

Step-by-step explanation:

y = mx+b

b = the y - intercept, so whatever you substitute for b would be the y-intercepet

I hope this helps! Have a great day!

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A student evaluated -4 + x for x = 9 1/2 and got an answer of 5 1/2. What might the student have done wrong?

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Alona [7]

Answer:

$3.9 in^2$

Step-by-step explanation:

The area of a triangle is given by

$A=\frac{1}{2}bh$

where

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Let's call L the length of one side.

We know that the perimeter of the triangle is

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The perimeter is the sum of the three sides, so:

$p=L+L+L=3L$

Therefore, we find the length of the side:

$L=\frac{p}{3}=\frac{9}{3}=3 in$

Therefore the length is the base of the triangle,

$b=L$

The height can be calculated by considering half triangle: the hypothenuse is equal to L, while one side is equal to half the base (b/2), therefore the height is given by Pythagorean's theorem:

$h=\sqrt{L^2-(\frac{b}{2})^2}=\sqrt{3^2-(\frac{3}{2})^2}=2.6 in$

Therefore, the area of the triangle is:

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