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True [87]
2 years ago
14

What is the surface area of this figure?

Mathematics
1 answer:
Ugo [173]2 years ago
4 0

Answer:

option c is the correct answer

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Researchers investigated the possible beneficial effect on heart health of drinking black tea and whether adding milk to the tea
Elanso [62]

Answer:

(a)  It is an experiment.

(b) Group III has been tested to compare the effect of tea

Step-by-step explanation:

24 volunteers are randomly selected to one of the three groups.

Group I drinks two cups of hot black tea without milk

Group II drinks two cups of hot black tea with milk

Group III drinks two cups of hot water but no tea.

At the end of the month, the researchers measured the change in each of the participant's heart health.

The average change of health status of three Groups can be measured and let it be X1', X2' and X3'. We can set up the hypothesis of no difference of heart health i.e H0 : µ1 = µ2 = µ3 against the alternative hypothesis that they are not equal. As the sample size is less than 30, we can use t-statistic.

Under the above logic, (a) it is an experiment.

(b) Group III has been tested to compare the effect of tea or to have comparison between GroupI and Group III.

4 0
3 years ago
2 times the sum of 3 and 6z
IgorC [24]
2 x (3+6z) = 6 +12z

This is how you do it
3 0
3 years ago
Read 2 more answers
Need help with 5 6 7 and 8. at least answer one of them .
likoan [24]

Answer:

5) moves one place to right

6) moves one place to left

Step-by-step explanation:

8 0
3 years ago
Disruptive properties<br> 5(4 + 7x)
Gnesinka [82]

Answer:

It is 35x+20

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
A car salesman has 8 used cars for sale. They have a mean price of $4500. What is the total price of all 8 cars?
muminat

Answer:

$36000

Step-by-step explanation:

We have a mean price of $4500 this means that in the 8 cars we have cars with higer and lower prices than $4500 but that if we have to give the same price to 8 cars that would be $4500. Then to know the total price of the all 8 cars we just have to multiply:

\$4500\cdot 8=$36000

7 0
3 years ago
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