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2 years ago

What variable did the researchers intentionally vary in the experiment, and what are the units for this variable?.

1 answer:

3 0

The variable the researchers intentionally varied in the experiment is time and the units of the variable is mins.

<h3>What is an independent variable?</h3>

The independent variable is the variable that the researcher varies or changes or manipulates in the course of the experiment. The independent variable usually have a direct effect on the dependent variable.

With the passage of time, the level of concentration increases. This means that time is the independent variable and concentration is the dependent variable.

Please find the required table attached. To learn more about independent variables, please check: brainly.com/question/26287880

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Plssssss help due today

Grace [21]

10^2 - 8^2
= 100 - 64
= 36
LM = √36 = 6

answer
LM = 6

8 0

3 years ago

The sum of three numbers is 8. The first number minus the second plus the third is 4. The first minus the third is 2 more than t

Whitepunk [10]

Your numbers will be 3+2+3=8

If you try the hint, the first number minus the 2nd plus the third is 4 then: 3-2+3=4

Answer: 3+2+3=8

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3 years ago

3. A fence is made up of eight 8 5/7-foot sections. How long is the fence? Write your answer as a mixed number in lowest terms.

rewona [7]

Answer:

Step-by-step explanation:

3)A fence is made up of eight 8 5/7-foot sections. This means the total number of feet's is 8 × 8 5/7. Expressing 8 5/7 as improper fraction, it will be 61/7 feet's

The total length of the fence =

8 × 61/7 = 488/7 feet's

Expressing as mixed fraction, it becomes

69 5/7 feets

4) Cynthia spent 3/4 of her time at the gym on the stair machine. She spent a total of 21 3/4 minutes on the stair machine. This means that the time she spent on the gym is 3/4 × 21 3/4 .

Converting 21 3/4 to improper fraction, it becomes 87/4

The time she spent on the gym

= 3/4 × 87/4 = 261/16

= 16 5/16 minutes

5) On Monday, Ryan jogged 1 ½ miles in ¼ hour. On Wednesday he jogged 2 1/3 miles in 1/3 hour. Converting to improper fractions,

the miles ran on Monday= 1 ½ miles = 3/2 miles

the miles jogged on wednesday = 2 1/3 miles = 7/3 miles

How much farther did Ryan jog on Wednesday than on Monday? This would be 7/3 - 3/2

= 5/6 miles

6) One requires 2/3 cup of flour, another requires 7/8 cup of flour, and the third require 3/4 cup of flour.

Total amount of flour that Josh will use is

2/3 +7/8 +3/4 = (16+21+18)/24

= 55/25 = 2 7/25 cups of flour

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3 years ago

Last one for tonight..............MATH UGH

fomenos

Answer:

30%

Step-by-step explanation:

I believe it would be 30% chance of the person picked would be Male that has not finished the book as there is a 50% chance of male and 60% chance that they had not read it. You would multiply .5*.6 which would give you .3 and therefor you have a 30% chance that these two problems are met.

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4 years ago

Sour Patch Kids cost $ 3.00 per pound. For each question, explain or show your reasoning. How. any pounds of Sour Patch Kids can

aivan3 [116]

Answer:

the third one

Step-by-step explanation:

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3 years ago

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