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Alina [70]
3 years ago
12

Please explain (picture attached)

Mathematics
1 answer:
Dafna1 [17]3 years ago
6 0

Answer:

I think the answer is C.

Step-by-step explanation:

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2x+9=1x-5 what is x?
Vlada [557]

Answer:

2x+9=1x-5

2x-1x=-5-9

x=-14

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Can some help me please<br>​
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i cant see the first few

Step-by-step explanation:

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Eva rode her bike at a steady speed to her grandmother's house, which was eight miles away, the ride took 40 minutes how many mi
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5 minutes

Step-by-step explanation:

8miles/1mile = 40minutes/ x minutes

x = 5 minutes

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Mr. Nice's backyard has an area of 225 square feet. What is the length of one side of his backyard?
Fittoniya [83]
  • Answer:

<em>C. 15 feet</em>

  • Step-by-step explanation:

<em>Area formula</em>

<em>A = l²</em>

<em>225 = l²</em>

<em>l = √225</em>

<em>l = √15²</em>

<em>l = 15 feet</em>

7 0
3 years ago
An investment strategy has an expected return of 15 percent and a standard deviation of 9 percent. Assume investment returns are
IgorLugansk [536]

Answer:

68% of an investment earning a return between 6 percent and 24 percent.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 15

Standard deviation = 9

How likely is it to earn a return between 6 percent and 24 percent?

6 = 15 - 1*9

6 is one standard deviation below the mean

24 = 15 + 1*9

24 is one standard deviation above the mean

By the empirical rule, there is a 68% of an investment earning a return between 6 percent and 24 percent.

6 0
2 years ago
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