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blagie [28]
3 years ago
8

Karlie has a collection of quarters, dimes, and nickels that equal $2.70. If she has 7 quarters and 7 nickels, how many dimes do

es she have? *
Mathematics
1 answer:
iogann1982 [59]3 years ago
4 0

Answer:

22 Dimes

Step-by-step explanation:

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What is the standard error of a sampling distribution with a population standard deviation of 12 and the sample size of 81?
Marizza181 [45]

Answer: d. 1.3333

Step-by-step explanation:

We know that the standard error of a sampling distribution is given by :-

S.E.=\dfrac{\sigma}{\sqrt{n}}

, where \sigma = Population standard deviation.

n= Sample size.

AS per given , we have

\sigma =12

n=81

Then, the standard error of a sampling distribution with a population standard deviation of 12 and the sample size of 81 will be :-

S.E.=\dfrac{12}{\sqrt{81}}

=\dfrac{12}{\sqrt{9^2}}=\dfrac{12}{9}\\\\=\dfrac{4}{3}\\\\\approx1.3333

Hence, the standard error of a sampling distribution with a population standard deviation of 12 and the sample size of 81 is 1.3333.

Thus the correct answer is d. 1.3333 .

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3 years ago
X-9=23 help plzzz test or my grades drop
swat32

Answer:

x=32

Step-by-step explanation:

4 0
3 years ago
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A carton of milk contains 1.89 liters. To the nearest whole number, how many 220-milliliter servings are in the container?
GuDViN [60]

Answer:

There are 8 220-mililiter servings in the container, with 130 mililiters left over.

Step-by-step explanation:

The mililiter unit of measure refers to 1/1000 liters. So 220 milliliters is actually 0.22 liters. Therefore, to determine the number of 220 milliliter servings that can fit in 1.89 liters, the following division must be performed:

1.89 / 0.22 = X

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Equivalent equation of 3(x+6)=4x+7
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Answer:

Step-by-step explanation:

3x + 18 = 4x + 7

18 - 7  =4x - 3x

11 = x

x= 11

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3 years ago
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