Carl knows the required height of the volume of a cone-shaped vase he’s designing. Which formula can he use to determine the radius of the vase. Select the correct answer.A. r = V/ 3πh
B. r = V /πh
C. r = 3V/ πh
D. r = ± /V πh

Answers

Answer 1

Answer: the volume of a cone is calculated like this:
V = pi*r^2*h/3
so we have to solve for radius:
r = √(3V/pi*h)
that is how to get the radius.
From your answers, C answer approaches to it, but it lacks the square root which is fundamental as well

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You score an 86 on the first of two exams. Write and solve an equation to find the score x that you need on the second exam to have a mean score of 90.
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A billiard ball is struck by a cue. It travels 100\,\text{cm}100cm100, start text, c, m, end text before ricocheting off a rail and traveling another 120\, \text{cm}120cm120, start text, c, m, end text into a corner pocket. The angle between the path as the ball approaches the rail and the path after it strikes the rail is 45^{\circ}45 ∘ 45, degrees. How far is the corner pocket from where the cue initially struck the ball?

Answers

Answer:

$\large \boxed{\text{86 cm}}$

Step-by-step explanation:

I think what you are saying is represented by the diagram below.

The ball starts at A, rebounds from the far wall at a 45° angle and into the corner pocket at C.

You want the find the distance from A to C.

We can use the Law of Cosines to answer this question

$\begin{array}{rcl}b^(2) & = & a^(2) + c^(2) - 2ac\cos \theta\n& = & 120^(2) + 100^(2) - 2 *120*100 * \cos 45^(\circ)\n& = & 14400 + 10000 - 24000*0.7071\n& = & 24400 - 16971\n& = & 7429\n b & = & \textbf{86 cm}\n\end{array}\n\text{The corner pocket is $\large \boxed{\textbf{86 cm}}$ from where the cue originally struck the ball.}$

Answer:

about 86 cm

Step-by-step explanation:

My understanding of the geometry is shown in the attached figure.

Since the angle of incidence is equal to the angle of reflection, the angle APP₂ will be 22.5°, and the vertical distance from the pocket P to the ball position B is ...

(PA +AB')sin(22.5°) = 220sin(22.5°) ≈ 84.19 . . . . cm

The horizontal distance PB is

(PA -AB)cos(22.5°) = 20cos(22.5°) ≈ 18.48 . . . . . cm

The distance PB is given by the distance formula ...

PB = √(84.19² +18.48²) ≈ 86.19 . . . . cm

The ball was initially about 86 cm from the corner pocket.

Which expression is equivalent to Negative 2 and one-fourth divided by negative two-thirds?

Answers

Answer:

The Answer is B) -9/4 divided by (-2/3)

Step-by-step explanation:

Answer:

B i think.

Step-by-step explanation:

I am doing the quiz on egdenuity right now

(Edit: i made a 90 on the quiz and this was right ) Have agreat day

PLEASE HELP

A

B

C

OR

D

Answers

Answer:

36 cm

Step-by-step explanation:

P = 2l + 2w

Plug in

P = 2(14) + 2 (4)

P = 28 + 8

P = 36

Answer:

Step-by-step explanation:

perimeter = 2l + 2w ← given

To calculate the perimeter substitute l = 14 and w = 4 into the formula

perimeter = (2 × 14 ) + (2 × 4 ) = 28 + 8 = 36 cm → D

Solve the following when x=3
6x - 3x -5.

Answers

6(3)-3(3)-5 =4 just substitute it

6x - 3x -5
x = 3

Substitute and solve.

6(3) - 3(3) - 5
18 - 9 - 5
9 - 5
4

Answer: 4

Jemaine babysat nine times.She earn $15 $20 $10 $12 $20 $16 $80 and $18 for eight babysitting jobs how much did she earned the ninth time if the mean of the data is $24