4x + 8y<br> 4(2) +8(-1)<br> 8 +(-8)<br> 0<br> What is the answer?

Megan uses a pedometer to find how many steps she takes each school day. she took 32,410 steps over the course of 5 days. she to

uysha [10]

Answer:

2.86 miles.

Step-by-step explanation:

We have been given that Megan uses a pedometer to find how many steps she takes each school day. she took 32,410 steps over the course of 5 days.

$\text{Steps per day}=\frac{32410}{5}$

$\text{Steps per day}=6482$

$\text{Inches in 6482 steps}=6482\times 28$

$\text{Inches in 6482 steps}=181496$

1 feet = 12 inches.

$\text{Feet in 6482 steps}=\frac{181496}{12}$

$\text{Feet in 6482 steps}=15124.666666$

$\text{Miles in 6482 steps}=\frac{15124.666666}{5280}$

$\text{Miles in 6482 steps}=2.8645$

$\text{Miles in 6482 steps}\approx 2.86$

Therefore, Megan walks 2.86 miles on Monday.

5 0

3 years ago

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Select the number line that shows that two opposite numbers have a sum of 0. 6 O A. -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 5

Evgen [1.6K]

Answer:

3

Step-by-step explanation:

8 0

3 years ago

In a sample of 138 tables, the average height was found to be 32.6in. with a variance of 2.8. Give a point estimate for the popu

vesna_86 [32]

Answer:

$\hat{\sigma}^2 = 2.8$

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 138

Average = 32.6 inch

Population variance,

$\sigma^2 = 2.8$

We have to find a point estimate for the population variance of the height.

The point estimate for the population variance is the population variance itself.

$\hat{\sigma}^2 = \sigma^2 = 2.8$

Thus, the point estimate of population variance is the population variance that is 2.8.

5 0

3 years ago

here is a list of numbers. 7,12,16,20,27,40,56,64. a work out the difference between the two square numbers in the list. b work

poizon [28]

Answer:

see below

Step-by-step explanation:

7,12,16,20,27,40,56,64

The square numbers are 16 = 4^2 and 64 = 8^2

The difference is 64 - 16 =48

The cube numbers are 27 = 3^3 and 64 = 4^3

64 - 27 =37

4 0

3 years ago

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3(5+6) ??? its distributive property

kaheart [24]

Yes, we apply the distributive property to simplify this expression.

3*5 = 15
6*3 = 18

15 + 18 is the final answer.

4 0

3 years ago

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4x + 8y 4(2) +8(-1) 8 +(-8) 0 What is the answer?