All categories

3 years ago

Please help (20 points)

Mathematics

1 answer:

Evgesh-ka [11]3 years ago

8 0

$35.\\V=\dfrac{\pi r^2h}{3}\ \ \ \ |\cdot3\\\\3V=\pi r^2h\ \ \ \ |:\pi r^2\\\\\boxed{h=\dfrac{3V}{\pi r^2}}$

$36.\\V=150\ m^3\\r=5\ m\\h=?\\\\\text{substitute}\\\\h=\dfrac{3\cdot150}{\pi\cdot5^2}=\dfrac{450}{25\pi}=\dfrac{18}{\pi}\approx\dfrac{18}{3}=6\ m\\\\Answer:\ The\ height\ is\ greater\ than\ a\ radius.$

You might be interested in

Which triangles are right triangles? Select all that apply.

Setler79 [48]

Answer:

triangle 1, triangle 3,

Step-by-step explanation:

Triangle 1= $14^{2} + 24^{2} = 772\\196+ 576 = 772$

Triangle 2= is wrong

Triangle 3= $11^{2} + 22^{2} = 605\\121+ 484= 605$

Triangle 4= is wrong.

7 0

2 years ago

6 Answer the following questions about this figure. If mZ1= 53°, what is mZ3?

Scrat [10]

Answer:

143 degrees

Step-by-step explanation:

Triangle EDF is a right triangle and we know that angle 1 is equal to 53 degrees. So, angle 2 is equal to 180-90-53 = 37 degrees. Now that we want to find angle 3, we subtract the measure of angle 2 (which is 37) from 180. That gives us 143 degrees.

5 0

2 years ago

Find the other endpoint of the line segment if:

Vesna [10]

Answer:

( - 15, - 16 )

Step-by-step explanation:

Coordinates of midpoint are ( $\frac{x_{1} +x_{2} }{2}$ , $\frac{y_{1} +y_{2} }{2}$ )

( - 5 + x ) / 2 = - 10 ⇒ x = - 15

( 4 + y ) / 2 = - 6 ⇒ y = - 16

( - 15, - 16 )

5 0

2 years ago

Which one is a binomial

wlad13 [49]

D is the binomial in these examples.

4 0

2 years ago

BC = 6x + 6, AB = 8 +9, and AC = 141. Find BC

Dahasolnce [82]

Answer: 60

Step-by-step explanation:

Since AB and BC creates AC, we can add them together to find x, then use that to find the value of BC.

8x+9+6x+6=141 [combine like terms]

14x+15=141 [subtract both sides by 15]

14x=126 [divide both sides by 14]

x=9

Now that we have found the value of x, we can plug that into BC.

6(9)+6 [multiply]

54+6 [add]

Now, we know the length of BC is 60.

3 0

2 years ago