Lea walked 1/2 miles in 1/3 hours. How long will it take Lea to walk 21/4 miles?

Answers

Answer 1

Answer: 1/3÷1/2=2/3
2/3×21/4=7/2
it will take her 3.5 hours

Answer 2

Answer: 21/4 * 1/3 / 1/2
= 21/12 / 1/2
= 21/12 * 2
= 21/6
= 3 3/6
= 3 1/2

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The mayor of a small town wants to determine the opinion of citizens of his town on the building of a new recreation center. He will select every fifth name on a list of town citizens to survey. What type of sampling strategy is the mayor using?

A.
convenience

B.
simple random

C.
stratified random

D.
systematic

Answers

The sampling strategy the mayor is using is D. Systematic sampling.

What type of sampling strategy is the mayor using?

Systematic sampling involves selecting every nth element from a list or population to create a sample. In this case, the mayor is selecting every fifth name from the list of town citizens.

It is a structured and ordered approach to sampling that ensures randomness and avoids potential biases that could be present in convenience sampling. Option D

Learn more about Systematic sampling at brainly.com/question/28505229

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I think it's B simple random.

If $2887.51 is 60%, What is 100%?

Answers

4812.52. I got this answer by seeing what number do you multiply 60 to get 2887.51. Then I multiplied that number by 100.

What ordered pair is a solution of the equation ? 2x + 4y = 6x - y

Answers

Use these pictures to figure it out also download Photomath

Perry surveyed 60 students at her school and found that 0.45 of the students she surveyed said their favorite class is math. Another 35% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?

Answers

1. Perry surveyed 60 students at her school.
=> 0.45 of the students said that their favorite subject is math
=> 0.45 x 100 = 45%
Thus, 45 % of 60:
=> 60 * .45 = 27
35% of the student said their favorite is science:
=> 35% / 100 = 0.35
=> 35% 0f 60 equals:
=> 60 * .35 = 21
Thus, 27 – 21 = 6 of the student said that they love math over science.

Answer:

Its d 6

Step-by-step explanation:

Fish 1 swims 4 feet in 2 seconds, Fish 2 swims 9 feet in 3 seconds, and Fish 3 swims 12 feet in 6 seconds. Use the table above to determine which fish are swimming at the same speed.

Answers

Answer: 1 and 3

Step-by-step explanation:

4•3=12 and 2•3=6

What is the answer for 136.9 divided by .77 showing work

Answers

The Answer is 181.688312 Because if you Use the ladder Method

The Answer is 181.688312

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Find the like terms in the expression y+1.2y+ 1.2z.A. Y and 1.2yB. 1.2y and 1.2zC. Y and 1.2z D. Y, 1.2y, and 1.2zSimplify 2 + 17x – 5x + 9A. 19x + 4B. 12x + 11C. 22x + 11D. 15x – 4Simplify 3(5y + 6) -4.A. 11y + 14B. 11y + 18C. 15y + 14D. 15y + 2Factor 81 – 27p.A 9(9 – 3p)B. 27 (3 – p)C. 27 (54 – p)D. 27 (p – 3)

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