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k0ka [10]
3 years ago
5

I cant figure it out

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0

---Lines that are parallel to each other will have the same slope

---Lines that are perpendicular to each other will have opposite reciprocal slopes

A line parallel to y = 1/3x + 2 --- C

x = 3y + 21

3y = x - 21

y = 1/3x - 7

A line perpendicular to x = 3 --- A

This is a vertical line, with an undefined slope. A perpendicular line will have a 0 slope.

A line perpendicular to 9x - 3y = 18 --- B

9x - 3y = 18

-3y = -9x + 18

y = 3x - 6

The opposite reciprocal of 3 is -1/3.

A line parallel to -4x + 8y = 9 --- D

-4x + 8y = 9

8y = 4x + 9

y = 1/2x + 9/8

A line that is parallel will have the same slope (1/2).

x - 2y = -2

-2y = -x - 2

y = 1/2x + 1

Hope this helps!

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Answer:

#1: 15

#2: 5

Step-by-step explanation:

#1 explanation

a^2+b^2=c^2

12^2+9^2=c^2

We are trying to find the hypotenuse (the slanted side)

144+81=c^2

225=c^2

The square root of 225 is 15

#2 explanation

a^2+b^2=c^2

12^2+b^2=13^2

We need to find one of the leg(s)

144+b^2=169

169-144=25

25=b^2

Square root of 25 is 5

Hope this helped! Please mark brainliest!

I'm 97% sure this is correct i did the lesson a couple weeks ago. :D

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