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Colt1911 [192]
3 years ago
14

A company makes a bracelet that is designed to repel mosquitoes so people don't have to wear bug spray. Researchers at the compa

ny are designing an experiment where volunteers will be assigned either the bracelet or bug spray to use at their homes. The researchers want to use a randomized block design. How should the researchers form the blocks
Mathematics
1 answer:
Yuri [45]3 years ago
5 0

Answer: volunteer within each block should live in similar environments to each other when it comes to mosquitos

Step-by-step explanation:

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At 1:30 p.m., Tom leaves in his boat from a dock and heads south. He travels at a rate of 25 miles per hour. Ten minutes later,
Nadya [2.5K]

Answer: she would catch up with Tom in 1 hour.

Step-by-step explanation:

Let t represent the time it will take for Mary to catch up with Tom.

Tom leaves his boat from a dock and travels at a rate of 25 miles per hour.

Distance = speed × time

Distance travelled by Tom in t hours is

25 × t = 25t

Ten minutes later, Mary leaves the same dock in her speedboat and heads after Tom. Converting 10 minutes to hours, it becomes 10/60 hour

Time spent by Mary is (t - 10/60) hours. If she travels at a rate of 30 miles per hour, it means that the distance that she would travel in

(t - 10/60) hours is

30(t - 10/60)

= 30t - 5

By the time she catches up with Tom, they would have covered the same distance. It means that

25t = 30t - 5

30t - 25t = 5

5t = 5

t = 5/5 = 1 hour

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3 years ago
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DerKrebs [107]

Answer:a=1/5

B=2/15

Step-by-step explanation:

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3 years ago
If 4.5 pounds of cherries cost $10, what is the unit price per pound
djverab [1.8K]
Simply divide $10 by 4.5 to get the answer $2.22 per pound (actually the 2's keep repeating.  
I guess the store might charge $2.23 since some will round any overage to the next penny.
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Help please! find m∠bcf
77julia77 [94]

Answer:

BCF = 140°

See attached image.

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2 years ago
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d. 0%

Step-by-step explanation:

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