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2 years ago

Which of the following is a perfect square? A. 18 B. 81 C. 50 D. 32

Mathematics

2 answers:

pantera1 [17]2 years ago

8 0

ANSWER-
The answer is 81 because 9x9 is 81

jeyben [28]2 years ago

7 0

Answer:81

Step-by-step explanation:

Because the square root of 81 is 9 which is a perfect square

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Imagine you are given the diameter of a circle and asked to find its volume. Select the statement that describes what you should

ivanzaharov [21]

Answer:

We need to take the diameter and divide by 2 to find the radius

Step-by-step explanation:

The volume of a sphere is found by

V = 4/3 pi r^3

So we need the radius

We know the diameter

r = d/2

We need to take the diameter and divide by 2

3 0

3 years ago

Is the point 3/5 and 4/5 corresponds to an angle in the unit circle what is the csc

Mariulka [41]

<u>Answer:</u>

csc = 5/4

<u>Step-by-step explanation:</u>

Assuming that the two given points 3/5 and 4/5 are the two sides of a triangle and a right angle 0 with legs x and y and z as its hypotenuse.

Then using Pythagoras Theorem:

$z^2=x^2+y^2$

$z^2=(\frac{3}{5} )^2+(\frac{4}{5} )^2$

$z^2 = \frac{9}{25} + \frac{16}{25}$

$z^2=\frac{25}{25}$

$z^2=1$

Taking square root on both the sides:

$z=1$

Now, $sin\alpha=\frac{4}{5}$

and we know that $csc = \frac{1}{sin\alpha }$

Therefore, csc = 5/4.

8 0

3 years ago

What fraction of each gallon of purple paint is red paint?

motikmotik

Answer:

4/7

Step-by-step explanation:

5 0

3 years ago

PLEASE HELP ME WITH THIS QUESTION. please and thank you.

sashaice [31]

3(a+b) and 3a+b: not equivalent

4(x+2y) and 8y+4x: equivalent

7 0

2 years ago

Read 2 more answers

Help me with this question plz?

wel

Volume of cylinder = πr²h = π x 4² x 6 = 96π

volume of cone = 1/3πR²H = 1/3π x 8² x 12 = 256π

You can see that volume of cone is more than twice of volume of cylinder. So she is not correct

8 0

3 years ago