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3 years ago

7h – 5(3h – 8) = –72

Mathematics

2 answers:

Serga [27]3 years ago

4 0

7h-5(3h-8)=-72

7h-15h+40=-72 /-40

-8h=-112 /:(-8)

h=14

Y_Kistochka [10]3 years ago

4 0

$7h - 5(3h - 8) = -72 \\ 7h - 15h +40 = -72 \\ -8h=-72-40 \\ 8h=112 \\ h= \frac{112}{8} =14$

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Circle A is dilated by a scale factor of 2.5 to form circle B. If the diameter of circle B is 12, what is the diameter of circle

Yakvenalex [24]

The diameter of circle A is 4.8. The correct option is the second option- 4.8

<h3>Calculating the diameter of a circle </h3>

From the question, we are to determine the diameter of circle A

From the given information,

Circle A is dilated by a scale factor of 2.5 to form circle B

That is,

If the diameter of circle A is d, then the diameter of circle B will be 2.5d

Also, from the given information,

Diameter of circle B = 12

Then, we can write that

2.5d = 12

∴ d = 12/2.5

d = 4.8

Hence, the diameter of circle A is 4.8. The correct option is the second option- 4.8

Learn more on Calculating the diameter of a circle here: brainly.com/question/10907234

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1 year ago

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sergey [27]

Answer:

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Step-by-step explanation:

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discriminant > 0 ⇒ 2 real solutions
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discriminant < 0 ⇒ no real solutions

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3 years ago

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ratelena [41]

Answer:

Step-by-step explanation:

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3 years ago

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Elza [17]

8+5i/5+2i
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3 years ago