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Eddi Din [679]
3 years ago
5

Which decimal has the same value as 2/5

Mathematics
2 answers:
almond37 [142]3 years ago
8 0

Answer:

0.4

Step-by-step explanation:

hope it helped

ValentinkaMS [17]3 years ago
3 0
Answer: 0.4

Explanation: To get this answer you have to get the denominator to 10 so you do 5(2) and you also have to do 2(2) and you will get 4/10 AKA 0.4
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When 2 times a number is increased by 9 the answer is the same as when 30 is decreased by the number
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Answer:

(2*n)+9=n-30

Step-by-step explanation:

I'm not sure but I think that is the equation

8 0
3 years ago
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we know that

The unit rate is $0.65 per foot

so

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so

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Step-by-step explanation:

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3 years ago
Which part of a fraction tells how many parts it takes to make a whole? (Numerator of denominator?)
solmaris [256]
The denominator will tell how many parts it takes to make a whole


4 0
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After a bride has interviewed 7 DJs to play at her wedding, her fiance tells her she needs to narrow it down to 4 DJs. In how ma
Alex17521 [72]

Answer:

840

Step-by-step explanation:

Given

DJs = 7

To\ pick = 4

Required

Determine the number of rankings

The term "ranking" as used in this question implies permutation and the required is calculated using:

^nP_r = \frac{n!}{(n-r)!}

Where

n = 7

r = 4

So:

^nP_r = \frac{n!}{(n-r)!}

^7P_4 = \frac{7!}{(7-4)!}

^7P_4 = \frac{7!}{3!}

^7P_4 = \frac{7 * 6 * 5 * 4 * 3!}{3!}

^7P_4 = 7 * 6 * 5 * 4

^7P_4 = 840

<em>Hence, number of ranking is 840</em>

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