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Lunna [17]
3 years ago
9

One hundred people are recruited for an experimental study to determine whether

Mathematics
1 answer:
densk [106]3 years ago
7 0

Answer:

 

B.)  Flip a coin for each person on the list. If the coin comes up heads, they will be put in the group that exercises before lunch. If the coin comes up tails, they will be put in the group that exercises after lunch.

D.)  The names are put into a bowl and mixed around. The first 50 names drawn will be put in the group that exercises before lunch, and the others will exercise after lunch.

Step-by-step explanation:

These are all the random ones I picked.

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The value of a $60,000 tractor decreases approximately 20% each year. Find the approximate value of the tractor in 5 years.
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The tractor will be worth 19660.8$ over the 5 years
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3 years ago
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A salesperson has to drive 500 miles. For the first three hours she drove at 65 mi/h. For the next two hours she drove at 55 mil
yarga [219]

Answer: she has 195 miles more to cover

Step-by-step explanation:

A salesperson has to drive 500 miles.

For the first three hours she drove at 65 miles/hour.

Distance = speed × time.

This means that distance covered in the first 3 hours is

65 ×3 = 195 miles

For the next two hours she drove at 55 miles per hour.

This means that distance covered in the next two hours is

55 × 2 = 110 miles

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Distance already covered is

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Distance remaining will be total distance - distance already covered. It becomes

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3 0
3 years ago
A sweater is 6.75% sales taxs is added to the price of the sweater. What is 6.75% written as a decimal
geniusboy [140]
The answer is 0.65 as a decimal
7 0
4 years ago
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I need help. line wx is parallel to line yz
Oksana_A [137]

Answer:

45

Step-by-step explanation:

<ABY=<ZBY(VERTICAL ANGLES)

SO.

3x-5=2x+40

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3 0
3 years ago
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Elijah drives 9 miles to his friends house in 1/6 hour. How fast does Elijah drive, in miles per hour? If he drives at this rate
katrin [286]

Answer:

He drives at 54 mph. He will get 108 miles if he drives at that rate for 2 hours.

Step-by-step explanation:

9 miles in 1/6 of an hour

9x6=driving speed of 54mph

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7 0
3 years ago
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