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Nostrana [21]
3 years ago
8

A spinner is spun once ( The spinner has 8 sections in it) What is the probability that the spinner will land on 5 or 7? A.8% B.

12 ½% C.16% D.25%
Mathematics
1 answer:
nordsb [41]3 years ago
3 0
D. 25% as there are 8 sections and two wanted outcomes this can be simplified into a 1/4 so 1/4=25%
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PLEASE HELP 4 QUESTIONS 90 POINTS
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1.  n^2 -8n +16 = 25

Subtract 25 from both sides

n^2 - 8n + 16 - 25 = 0

Simplify

n^2 - 8n - 9 =0

Factor

(n-9)(n+1) = 0

Solve for n

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2. C = b^2/25

Multiply both sides by 25:

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Take square root of both sides

b = +/-√25c

Simplify:

b = 5√C, -5√C


3. d = 16t^2 +12t

subtract d from both side:

16t^2 + 12t -d =0

Use quadratic formula to solve:

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4. 5w^2 +10w =40

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5w^2 + 10w -40 = 0

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Divide both sides by 5:

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