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erastova [34]
3 years ago
6

What is the length of PR?

Mathematics
2 answers:
OlgaM077 [116]3 years ago
5 0

5/x=15/21=

15x=105

x=7

11111nata11111 [884]3 years ago
4 0

Hi!

So we need to know how much smaller ΔPQR is than ΔDEF.

See line DE compared to PQ. PQ is 3 times smaller than DE. That means ΔPQR is 3 times smaller than ΔDEF.

So to find the length of PR, divide DF by 3.

21/3 = 7

x=7

Hope this helps! :)

-Peredhel

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3 years ago
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kiruha [24]

The frequency of A's would be 16.

The following would be the relative frequencies after the initial .08.

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4 0
3 years ago
4. Find the center and radius of the circle given by this equation: x2 – 8x + y2 + 4y - 16 = 0
scoray [572]

Answer:

Center ( 4 , -2) and r = 6

Step-by-step explanation:

x² - 8x + y² + 4y - 16 = 0

x² - 8x  + y² + 4 y = 16

x²- 2*4x + y² + 2 *2y = 16

(x² - 2*4x + 16 ) - 16 + (y² + 2*2y + 4) -4 = 16

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Center ( 4 , -2) and r = 6

7 0
2 years ago
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