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3 years ago

What is most likely true about the population of 250 grandparents

Mathematics

2 answers:

Gnom [1K]3 years ago

8 0

Answer: More grandparents prefer using hard copy rather than a digital copy.

Step-by-step explanation:

Given: The total number of grandparents surveyed = 250

which is 10 times n where n is the sample size = 25

i.e. we need to multiply 10 to each number given in picture.

Therefore, the number of grandparents surveyed prefer digital copy = $4\times10=40$

The number of grandparents surveyed prefer digital copy = $21\times10=210$

Clearly 210>40

Therefore, More grandparents prefer using hard copy rather than a digital copy.

Goshia [24]3 years ago

3 0

Answer:more grandparents prefer using a hard copy than using a digital copy

Step-by-step explanation:

21 is greater then 4

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Maria has added 2 liters of pure alcohol to 8 liters of a 48% alcohol solution. What is the alcohol concentration of the resulti

ss7ja [257]

Answer:

The alcohol concentration of the resulting solution is 58.4%

Step-by-step explanation:

- At first we must to find the quantity of pure alcohol in the 8 liters

∵ The alcohol concentration is 48% in 8 liters

∴ The quantity of pure alcoholic = $\frac{48}{100}*8=3.84$ liters

- She added 2 liters pure alcohol to the solution that means the solution

increased by 2 liters and alcohol quantity increased by 2 liters

∵ She added 2 liters pure alcohol

∴ The quantity of pure alcohol = 2 + 3.84 = 5.84 liters

∴ The resulting solution = 2 + 8 = 10 liters

- Now we need to find the concentration of alcohol in the resulting

solution

∵ The quantity of pure alcohol = 5.84 liters

∵ The resulting solution = 10 liters

∴ The concentrate of alcohol = $\frac{5.84}{10}*100$ % = 58.4%

The alcohol concentration of the resulting solution is 58.4%

5 0

3 years ago

Read 2 more answers

Bob sold 5 toaster ovens and 3 blenders for $500. if a blender is $20 less than a toaster oven, how much is a blender?

Harrizon [31]

The answer would be $50 per blender.
To explain the way I did it --
Toaster ovens - 70 * 5 = 350
70 - 20 = 50
Blenders - 50 * 3 = 150
350 + 150 = 500

7 0

3 years ago

Read 2 more answers

These angles are equal. What are they called?

Eddi Din [679]

Equal angles are congruent angles.

6 0

3 years ago

25. Which of the following is equivalent to: 7 2 x 7-4

MissTica

Answer:

It's D or 1/7^2

$\frac{1}{7^{2} }$

Step-by-step explanation:

They both equal 1/49

3 0

3 years ago

Evaluate. −8/125−−−−√3<br> A. -4/25<br> B. −2/5<br> C. 4/25<br> D. 2/5

larisa [96]

The correct question is: evaluate

$\sqrt[3]{- \frac{8}{125} }$

The answer is: option B. -2 / 5

Explanation:

$\sqrt[3]{- \frac{8}{125} }=- \frac{ \sqrt[3]{8} }{ \sqrt[3]{125} } =- \frac{ \sqrt[3]{2^3} }{ \sqrt[3]{5^3} } =- \frac{2}{5}$

4 0

4 years ago