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marishachu [46]
3 years ago
7

Divide 500 in a ratio of 3:7

Mathematics
2 answers:
stealth61 [152]3 years ago
5 0
3:7\to3+7=10\\\\500:10=50\\\\therefore:\\3\cdot50=150\\7\cdot50=350\\\\Answer:\boxed{150:350}
jenyasd209 [6]3 years ago
4 0
3x+7x=500\\
10x=500\\
x=50\\\\
3x=3\cdot50=150\\
7x=7\cdot50=350\\\\
500=\boxed{150+350}
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What is the answer to 22 +10X=
Nuetrik [128]

Complete question:

what is the answer to 22 +10x = 0

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the value of x is -2.2

Step-by-step explanation:

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22 +10x = 0

collect like terms

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6 0
3 years ago
Add an intersection the red light times normally distributed by the mean of three minutes and a standard deviation of .25 minute
Soloha48 [4]

95% of red lights last between 2.5 and 3.5 minutes.

<u>Step-by-step explanation:</u>

In this case,

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  • The standard deviation SD is given as 0.25

Assume the bell shaped graph of normal distribution,

The center of the graph is mean which is 3 minutes.

We move one space to the right side of mean ⇒ M + SD

⇒ 3+0.25 = 3.25 minutes.

Again we move one more space to the right of mean ⇒ M + 2SD

⇒ 3 + (0.25×2) = 3.5 minutes.

Similarly,

Move one space to the left side of mean ⇒ M - SD

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Again we move one more space to the left of mean ⇒ M - 2SD

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Therefore, the percent of  red lights that last between 2.5 and 3.5 minutes is 95%

8 0
4 years ago
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