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alexandr402 [8]
3 years ago
10

Find the unknown numbers in the description. Three times a number is between -18 and 18. The solution set is

Mathematics
1 answer:
OlgaM077 [116]3 years ago
8 0
So 3 times a number is between -18 and 18
between means it cannot be -18 or 18 so
3 times x=3x
x=unknown
3x
< less than
>greater than

if it is between -18 and 18 then the number is >-18 and <18 so
-18<3x and
18>3x
divide both equations by 3
-6<x
6>x
combine
-6<x<6
solution set=(x|-6<x<6)
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The length of one leg of a right triangle is 20.3 centimeters. The length of the hypotenuse is
meriva
<h3>Answer:  Approximately 23.0 cm</h3>

=====================================================

Work Shown:

a = 20.3

b = unknown

c = 30.7

Apply the pythagorean theorem to find b

a^2 + b^2 = c^2

(20.3)^2 + b^2 = (30.7)^2

412.09 + b^2 = 942.49

b^2 = 942.49-412.09

b^2 = 530.4

b = sqrt(530.4)

b = 23.0304146727757  value is approximate

b = 23.0

I rounded to one decimal place because the other values (20.3 and 30.7) were to one decimal place.

8 0
3 years ago
After how many seconds is the height 68 feet? When the equation is h=-16t2+64t+8
Rudiy27
<span>68=-16t2+64t+8
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5 0
3 years ago
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Elina [12.6K]

Answer:25

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7 0
3 years ago
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fiasKO [112]
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3 years ago
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Answer:

19

Step-by-step explanation:

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5 0
2 years ago
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