3 years ago

Find the diameter of a circle whose equation is

Mathematics

1 answer:

Olin [163]3 years ago

7 0

Answer:

D) 20

Step-by-step explanation:

x^2 + (y - 2)^2=100

This can be rewritten as

(x-0)^2 + (y - 2)^2=10^2

This is in the form

(x-h)^2 + (y - k)^2=r^2

The radius is 10

The diameter is 2 times the radius

d = 2*r = 2*10 = 20

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60% of students at a local high school participate in club activities. Rewrite this percent as a fraction

Setler79 [48]

Answer:

The correct answer is 3/5

Step-by-step explanation:

I know its correct :)

4 0

3 years ago

Solve the system. x+3y=1 -2x+7=-23

Viefleur [7K]

X+ 3y = 1 -----(first equation)
-2x+7 = -23 ---(second equation)
-2x = -23-7
x = 30/2
x = 15

Now, Substitute the value of x in first equation,
15 + 3y = 1
3y = 1 - 15
y = -14/3

In short, Final Answers are: x = 15 & y = -14/3

Hope this helps!

5 0

3 years ago

4x + 8y =40 when y=0.8?

amid [387]

4x + 8y =40
4x + 8* 0.8 =40
4x + 6.4 =40
4x = 40 - 6.4
4x = 33.6
x = 33.6/4
x = 8.4

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3 years ago

Which of the following steps should be completed first when simplifying ?

valkas [14]

Answer: combine like terms

3 0

3 years ago

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What is the slope of the line shown?

jek_recluse [69]

Answer:

- $\frac{1}{4}$

Step-by-step explanation:

( $x_{1}$ , $y_{1}$ )

( $x_{2}$ , $y_{2}$ )

m = $\frac{y_{2} -y_{1} }{x_{2} -x_{1} }$

~~~~~~~~~

( - 2, 6 )

( 2, 5 )

m = $\frac{6-5}{-2-2}$ = - $\frac{1}{4}$

5 0

3 years ago

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