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4 years ago

What is 7/21 simplified

Mathematics

2 answers:

Mumz [18]4 years ago

6 0

This would be 1/3.
(7 goes into 21, 3 times)

Hunter-Best [27]4 years ago

3 0

21 ÷ 7 = 3 that is the answer

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Which capital letters have one or more lines of symmetry? Select all that apply.

7nadin3 [17]

Answer:

Y and J

Step-by-step explanation:

They have zero lines of symmetry

4 0

3 years ago

Imamu pays $30 each month for his gym membership. What is the change in the amount of money in his account after 2/3 of a year

Alchen [17]

The answer is $240 because 2/3 in a years have 8 month so just multiply 3*8 which give you 24 and just add a zero.

Your answer is: $240.

Thank you

Have a great day :).

4 0

3 years ago

The standard deviation of a sample taken from population A is 17.6 for a sample of 25.

lawyer [7]

Answer:

The standard deviation of the sample mean differences is _5.23_

Step-by-step explanation:

We have a sample of a population A and a sample of a population B.

For the sample of population A, the standard deviation $\sigma_A$ is

$\sigma_A = 17.6$

The sample size $n_A$ is:

$n_A = 25$ .

For the sample of population B, the standard deviation $\sigma_B$ is

$\sigma_B = 21.2$

The sample size $n_B$ is:

$n_B = 30$ .

Then the standard deviation for the difference of means has the following form:

$\sigma=\sqrt{\frac{\sigma_A^2}{n_A}+\frac{\sigma_B^2}{n_B}}$

Finally

$\sigma=\sqrt{\frac{17.6^2}{25}+\frac{21.2^2}{30}}\\\\\sigma= 5.23$

7 0

4 years ago

Calculate the distance between Points A and B.<br> A.4.5<br> B.7.1<br> C.7.8<br> D.9.2

storchak [24]

Answer:

7.8 units separate the points A and B.

Step-by-step explanation:

Going from B to A, x increases by 6 (this is the horizontal side of the triangle formed by vertices A and B), and y increases by 5. Applying the Pythagorean Theorem, we get

d = √(6² + 5²), or √(61, which is approximately 7.8, the desired distance.

4 0

3 years ago

There are 16 white balloons, 24 red balloons. Each arrangement must be identical. What is the greatest number of arrangements yo

katovenus [111]

Answer:

Step-by-step explanation:

hope i helped have a verey good day

4 0

3 years ago