How will adding the value 1000 affect the mean and median of the data set 5, 10, 17, 19, 20? A.
The median increases and the mean stays the same.

B.
The mean and the median increase by the same amount.

C.
The mean increases more than the median increases.

D.
The mean increases and the median stays the same.

Answers

Answer 1

Answer: The answer should be C

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The distance a spring will stretch varies directly with how much weight is attached to the spring. If a spring stretches 9 inches with 100 pounds attached, how far will it stretch with 90 pounds attached? Round to the nearest tenth of an inch.A. 8.1 in. B. 8.9 in. C. 10 in. D. 9.1 in.

I know that 700 ÷ 70 = 10 because the 7 in 700 represents
times what it represents in?

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100 because 100 x 7 = 700.

When can a probability tree diagram be useful?

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A dining set is priced at $785. If the sales tax is 7 percent, what is the cost to purchase the dining set? Round to the nearest cent if necessary.$54.95
$792.00
$839.95
$1134.50

Answers

The percentage is calculated by dividing the required value by the totalvalue and multiplying by 100.

Cost of the diningset = $785

Salestax = 7%

7% of $785 = $54.95

Purchase cost = Cost + sales tax

The cost to purchase the diningset is $839.95

Option C is the correct answer.

What is a percentage?

The percentage is calculated by dividing the required value by the totalvalue and multiplying by 100.

Example:

Requiredpercentagevalue = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Cost of the diningset = $785

Salestax = 7%

Purchase cost = Cost + sales tax

Cost to purchase the diningset.

= $785 + 7% of %785

= 785 + 7/100 x 785

= 785 + 54.95

= $839.95

Rounding to the nearestcent,

= $840

Thus,

The cost to purchase the diningset is $839.95

Option C is the correct answer.

Learn more about percentages here:

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The answer is $839.95.Convert sales tax (7%) to decimal (0.07).$785 × 0.07 = $54.95.Then we add $54.95 to $785 to get $839.95.

How old am I if 400 reduced by 2 times my age is 244? (answer with steps)

Answers

400 reduced (minus) 2 times my age (2x) is 244 (= 244).

400 - 2x = 244 Subtract 400 from both sides
-2x = -156 Divide both sides by -2
x = 78

I am 78 years old.

Given the two expressions shown below:A. square root of 64 plus square root of 5
B. square root of 64 plus square root of 4

Which statement best describes the two expressions?

A. Both are rational.
B. Both are irrational.
C. A is rational, but B is irrational.
D. A is irrational, but B is rational.

Answers

The statement that best describes the two expressions is
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square root of 64 plus square root of 5 is 8 plus square root of 5, the square root of 5 is an irrational number which makes the entire expression an irrational number

square root of 64 plus square root of 4 is 8 plus 2 which is equal to 10 and is a rational number

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