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Stella [2.4K]
3 years ago
10

By which angle measures can the regular pentagon be rotated so it maps onto itself?

Mathematics
1 answer:
vazorg [7]3 years ago
5 0

Answer:

hi there the answer is 72

Step-by-step explanation:

sorry but my work is on a piece of paper in front of me

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Emily researched the average prices of desktop PCs worldwide since 2000. She could only find data from 2005 to 2010. She created
boyakko [2]

Answer: A linear relationship


Step-by-step explanation:

From the graph we can see as the number of years increasing the average price of a PC decreasing at a constant rate.

It is forming a straight line and its equation y=-39+998 is similar to equation of line y=mx+c, where m= -39 which is the rate of change of average price.

Hence, the relationship between the average price of PCs and the number of years that have passed since 2000 is a linear relationship.

6 0
3 years ago
Match each quadratic equation with its solution set.
Marianna [84]

Answer:

( 8 , - 8)  => x² - 55 = 9

( 4 , - 4)  =>  2x² - 32 = 0

(5 , - 5) => 4x² - 100 = 0

(11 , - 11) => x² - 140 = -19

( 3, - 3) =>  2x² - 18 = 0

Step-by-step explanation:

1)

2x^2  - 32 = 0\\\\2(x^2 - 16 ) = 0 \\\\x^2 - 16 = 0 \\\\x^2 = 16 \\\\x = \sqrt {16 }  = \pm 4

x = ( 4 , - 4)

2)

4x^2 - 100 = 0 \\\\4(x^2 - 25 ) = 0\\\\x^2 - 25 = 0 \\\\x^2 = 25 \\\\x= \sqrt{25} = \pm 5

x = ( 5 , - 5 )

3)

x^2 - 55 = 9 \\\\x^2 = 9 +55\\\\x^2 = 64\\\\x = \sqrt{64} = \pm 8

x= ( 8 , - 8)

4)

x^2 - 140 = - 19\\\\x^2 = -19 + 140 \\\\x^2 = 121 \\\\x= \sqrt{121} = \pm 11

x = ( 11  , -11)

5)

2x^2 - 18 = 0\\\\2(x^2 - 9) = 0\\\\x^2- 9 = 0 \\\\x^2 = 9 \\\\x = \sqrt9 = \pm 3

x = ( 3 , - 3)

8 0
3 years ago
Read 2 more answers
The NewLargeLand is a large breed of a dog. It weighs about 10 x 10 pounds. Write 10 x 10 using an exponent. Then find the value
My name is Ann [436]
10 to da tenth power which is 100
6 0
3 years ago
Plz help ASAP THANKS!! ❤️<br><br> Image above^^^
Len [333]

Answer:

C.

Step-by-step explanation:

you can automatically tell that it is C because the angles are a right angle together. A right angle is 90 degrees, which means that the angles together would be x=(4z-85)=90

3 0
4 years ago
Read 2 more answers
Answer number 16 please thank you
dusya [7]
I think the answer is B
7 0
3 years ago
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