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Sedbober [7]
3 years ago
9

Find the area of a circle given the diameter of 12

Mathematics
2 answers:
Inga [223]3 years ago
6 0

Answer:

A= pi x r^2

r= 1\2D

r=1\2 x12

r=6

A=pi x 6^2

A=36pi or 36 x 22\7= 113

Step-by-step explanation:

Maslowich3 years ago
3 0

Answer:

A≈113.1

Step-by-step explanation:

i think this is it idk

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factorise the following 1. x²-2x+15.... 2. y²-19y+90​
Marta_Voda [28]

Answer:

1. x²-2x+15

This can't be factored, I've tried multiple ways now, but it just can't be factored.

2. y²-19y+90​

Let's factor y^2−19y+90

y^2−19y+90

The middle number is -19 and the last number is 90.

Factoring means we want something like

(y+_)(y+_)

Which numbers go in the blanks?

We need two numbers that...

   Add together to get -19

   Multiply together to get 90

Can you think of the two numbers?

Try -9 and -10:

   -9+-10 = -19

   -9*-10 = 90

Fill in the blanks in

(y+_)(y+_)

with -9 and -10 to get...

(y-9)(y-10)

Answer:

(y−9) (y−10)

3 0
3 years ago
Write a vector equation of the line that passes through p(–1 6) and is parallel to a = (3, -1).
Phoenix [80]

Answer:

C

Step-by-step explanation:

(x,y) = p + t(a)

(x,y) = (-1,6) + t(3,-1)

(x,y) - (-1,6) = t(3,-1)

(x + 1, y - 6) = t(3, -1)

7 0
3 years ago
Read 2 more answers
if i have a line y=4x+7. I want to create another line that is perpendicular through point A (16,2). What is the new equation?
Charra [1.4K]
Perpendicular lines have the negative reciprocal slope, so the slope of your new line will be -1/4 and the current equation will be as follows:
y = -1/4x + b
(where b is the y intercept)

to find b, plug in point A and you'll get:
2 = -1/4(16) + b
2 = -4 + b
6 = b

the equation will be:
y = -1/4x + 6
4 0
3 years ago
Name a pair of opposite rays whose end point is b
Neko [114]

Answer:

Your answer would be G, since point G is opposite of point B, and is a ray.

Step-by-step explanation:


3 0
3 years ago
free points? only 1st ;-; pls be nice and dont report dis :'), ppl need points to ask more question so dont answer this if you d
spin [16.1K]

Answer:

Thank you could I possibly get brainliest if you don't want to it's okay just asking

Step-by-step explanation:

Have a good day/night :)

3 0
3 years ago
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