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SpyIntel [72]
2 years ago
13

Choose the number that is composite. A. 2 B. 21 C. 31 D. 17

Mathematics
1 answer:
Stella [2.4K]2 years ago
6 0
A composite number has more than two factors. (B) 21 is a composite number because the factors of 21 are 7 × 3.
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Lena estimated the height of a desk to be 38 inches. The actual height is 41 inches.
Leno4ka [110]

Answer:

7.3%

Step-by-step explanation:

First you have to find out what 38 out of 41 is as a percentage

This is 92.68%

so now we have to do

100.00 - 92.68 this is 7.32

But you said round to the nearest tenth so it would actually be rounded down to 7.3%

4 0
2 years ago
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Answer: W= 4

Step-by-step explanation:

3 0
3 years ago
Please help, only the answer is required
Romashka [77]

Answer:

Infinitely many solutions.

Step-by-step explanation:

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2(5x-8y)=2(-11)

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10x-16y=-22

-10x+16y=22

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infinitely many solutions

6 0
2 years ago
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Arada [10]

refer to the attachment

6 0
2 years ago
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Newborn Brain Damage Researchers studied 208 infants whose brains were temporarily deprived of oxygen due to complications at bi
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Answer:

To provide a baseline for judging the survival rates of infants who received whole-body cooling

Step-by-step explanation:

In this case, the purpose of the experiment is to see whether reducing body temperature for three days after birth increased the rate of survival without brain damage.

Then, the proposed method (whole-body cooling) has to be contrasted with the baseline, in this case, the "usual care". If we want to know if this proposed method is statistically better, we have to compare with these baseline with random sampling out of the same population.

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