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vivado [14]
2 years ago
15

Astronauts on the International Space Station commonly face a health issue that some people on Earth experience as well. Researc

h conducted on this health issue has helped solve problems on Earth.
What is this health issue?
(1 point)
a weightlessness

b hearing and sight loss

c loss of bone and muscle density

d obesity
Mathematics
2 answers:
elena-14-01-66 [18.8K]2 years ago
8 0
C is the correct answer
Ludmilka [50]2 years ago
4 0

Answer:

C

Step-by-step explanation:

In space you have to exercise 24/7, because if you don't your bones will decay little by little, the same goes for earth, it is a condition that happens if you don't move or exercise.

If possible; can I get brainliest, I mean if it's correct

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nikdorinn [45]
Plantation owners wabted runaways slaves
8 0
3 years ago
What are the following numbers writen as powers? 243
puteri [66]

Answer:

243=3^5

Step-by-step explanation:

We have to write 243 as a power of some number.

So, if we factorize 243 we get,

243 = 3 × 3 × 3 × 3 × 3

Therefore, we can write 243 as a power of 3.

No other number can be written in powers of 243 because it do not contain any other factor than 3.

Hence, 243 can be written as :

243=3^5

6 0
3 years ago
Q1. a. The value of x is 0.3 correct to 1 decimal place.
Yuki888 [10]
I think it is 3 good luck me saying this then u getting the wrong answer
3 0
2 years ago
Write the given expression as a single trigonometric function.
tatiyna

Answer:

Just did it, had a good guess.

Step-by-step explanation:

6 0
3 years ago
In a study of parents' perceptions of their children's size, researchers asked parents to estimate their youngest child's height
tatyana61 [14]

Answer:

Test statistic t=6.505

P-value=0

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that parents tend to underestimate their youngest child's size.

Then, the null and alternative hypothesis are:

H_0: \mu=0\\\\H_a:\mu> 0

The significance level is assumed to be 0.05.

The sample has a size n=39.

The sample mean is M=7.5.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=7.2.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{7.2}{\sqrt{39}}=1.153

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{7.5-0}{1.153}=\dfrac{7.5}{1.153}=6.505

The degrees of freedom for this sample size are:

df=n-1=39-1=38

This test is a right-tailed test, with 38 degrees of freedom and t=6.505, so the P-value for this test is calculated as (using a t-table):

P-value=P(t>6.505)=0

As the P-value (0) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is  enough evidence to support the claim that parents tend to underestimate their youngest child's size.

5 0
3 years ago
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