3 years ago

Eathan ran 11 miles in 2 hours. what is the unit rate of miles to hours

Mathematics

2 answers:

spayn [35]3 years ago

6 0

Answer:

5.5:1

Step-by-step explanation:

murzikaleks [220]3 years ago

3 0

Answer:

5.5 miles per hour

Step-by-step explanation:

11/2= 5.5

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From 12,000 graphing calculators produced by a manufacturer, an inspector selects a random sample of 550 calculators and finds

maria [59]

Answer:

131

Step-by-step explanation:

Using proportion,

If Out of 550 calculators = 6 are defective,

Then out of 12000 calculators = ? are defective

$\frac{12000 calculators}{550calculators} * 6$

= 21.8 * 6

= 130.8 ≈ 131

∴ Approximately 131 calculators are defective

3 0

3 years ago

Why is 3 + (−5) equal to −2?

DedPeter [7]

It is not equal to -2 because the five is a negative so when adding two different integers are subtracted and with a negative sign.

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3 years ago

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hey can i get help here? im just a middle schooler and my school just jumped into this with no explanation. so far highschoolers

Katena32 [7]

Answer:

the closest answer is the last option, so I would say that is the correct one.

Step-by-step explanation:

4.5 x 4.5 x π =

20.25 x π =

63.6172....

7 0

3 years ago

There are 10x - 8 customers in a store on Monday and 6x + 16 customers on Tuesday. What is the total number of customers for the

Mandarinka [93]

Answer:

16x+16

Step-by-step explanation:

7 0

3 years ago

The mean of a set of data is -3.82 and its standard deviation is 2.31. Find the z score for a value of 3.99.

gtnhenbr [62]

Answer:

The z- score for a value of 3.99 will be 3.38.

Step-by-step explanation:

It is given that the mean of a set of data is -3.82 and its standard deviation is 2.31.

Thus, the value of the z-score= $\frac{value-mean}{standarddeviation}$

= $\frac{3.99-(-3.82)}{2.31}$

= $\frac{3.99+3.82}{2.31}$

= $\frac{7.81}{2.31}$

= $3.38$

Thus, the z- score for a value of 3.99 will be 3.38.

6 0

3 years ago