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2 years ago

What is the volume of a ball with a diameter of 7 centimeters?

Mathematics

1 answer:

Leviafan [203]2 years ago

7 0

42.88. You might want to wait for another answer jyst to be 100% sure:)

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Calculate the line integral of the vector field F = xy i + (x − y) j along C, the triangle composed of three segments. C1 is

Ksivusya [100]

Thank you for posting your question here at brianly. I hope the answer will help you. Below is the solution:

or segment from (4,0) to (-4,0), y is always zero because straight segment.
in that case x*y=x*0=0 
and x+y=x+0=x 
if you choose x=4-t where t goes from 0 to 8 you should get 
r(t)=0i+(4-t)j

6 0

2 years ago

From a group of 12 students, we want to select a random sample of 4 students to serve on a university committee. How many combin

borishaifa [10]

Answer:

495 combinations of 4 students can be selected.

Step-by-step explanation:

The order of the students in the sample is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

How many combination of random samples of 4 students can be selected?

4 from a set of 12. So

$C_{n,x} = \frac{12!}{4!(8)!} = 495$

495 combinations of 4 students can be selected.

8 0

3 years ago

I just need to know the blanks

iris [78.8K]

Answer:

D, supplementary, BC, D

Step-by-step explanation:

5 0

3 years ago

Solve the equation for a.

nataly862011 [7]

Answer:

a=-7.68

Step-by-step explanation:

3a+13.61=-9.43

-13.61

_____________

-23.04

3a=-23.04

-23.04/3= -7.68

7 0

2 years ago

Isn’t it just 5? Why would it say check all that apply

LenKa [72]

Answer: $25^\frac{1}{2}$

Step-by-step explanation:

25 = 5*5 or -5 * -5

yes, that is correct. However, you forgot another property of roots. Roots are simply exponential fractions.

$\sqrt[n]{x^m}=x^\frac{m}{n}$

Therefore, $\sqrt{25}$ can also be rewritten as: $25^\frac{1}{2}$ . Notice that it cannot be -25 because that would be a negative square root which will give us an imaginary number.

4 0

2 years ago

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