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3 years ago

What is the volume of a sphere if it has a radius of 2 feet? (Use 3.14 for π .) 33.49 ft 3 100.48 ft 3 75.36 ft 3 25.12 ft 3

Mathematics

2 answers:

satela [25.4K]3 years ago

8 0

Answer: 33.49

Use this formula:

V = 4/3 • \pi • r^3

V = (4/3) (3.14) (2)^3

V = 33.49

cricket20 [7]3 years ago

5 0

I think the answer is the first one

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1 5/18 + 1 5/18 + 17/18 + 17/18

xenn [34]

Answer:

4.444

Step-by-step explanation:

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6 0

3 years ago

2 Carrots €1.80 per kg How much does 250 g of carrots cost?

igomit [66]

Answer:

The cost of 250 g carrots is €0.45.

Step-by-step explanation:

Given that,

Cost of carrots is €1.80 per kg

We need to find the cost of 250 g of carrots.

1 kg cost = €1.80

We know that, 250 gram = 0.25 kg

0.25 kg cost = €1.80 × 0.25

= €0.45

So, the cost of 250 g carrots is €0.45.

3 0

3 years ago

Write the equation of the line that goes through (-4,13) and (8,49).

algol [13]

Answer:

y=3x +25

Step-by-step explanation:

First calculate the slope:

m = (y1 - y2)/(x1-x2)

m = (49 - 13)/(8-(-4))

m= 36/12 = 3

so we have

y = 3x + b

subtitute a point:

49=3(8) + b

b=25

the equation is y=3x +25

4 0

3 years ago

How many DVDs. A small independent movie company determines the profit P for producing n DVD copies of a recent release is P = −

Softa [21]

The company should produce "85" DVD's to maximize the profit.

According to the question,

The profit P for producing n DVD copies are

$P=-0.02n^2+3.4n -16$

Let,

The number of units be "n".

Now,

To find the minimize profit,

→ $P'(n) = 0$

→ $-0.04n+3.4=0$

By substracting "3.4" from both the sides, we get

→ $-0.04n+3.4-3.4=-3.4$

→ $-0.04n = -3.4$

→ $n = \frac{-3.4}{-0.04}$

→ $n = 85$

Thus the answer above is right.

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7 0

2 years ago

PLEASE HELP :) LOTS OF POINTS + BRAINLY

pogonyaev

Jackson's method to figure out the height of the mountain is from the

similar triangles formed by the light using the mirror.

Response:

The height of the mountain is 50 feet 8 inches

<h3>Which methods can used to find the height of the mountain?</h3>

The given parameters are;

Distance of the mirror from Jackson = 5 feet

Distance of the mirror from the base of the mountain = 40 feet

Height of Jackson = 6'4'' tall

Required:

The approximate height of the mountain, h

Solution:

The triangles formed by the light from the top of the mountain which is

reflected to Jackson from the mirror, Jackson's height, the height of the

mountain, and their distances from the mirror, are similar triangles.

The ratio of corresponding sides of similar triangles are equal, therefore,

we have;

$\dfrac{Jackson's \ height}{Jackson's \ distance \ from \ the \ mirror } =\mathbf{ \dfrac{Height \ of \ the \ mountain}{Distance \ of \ the \ mountain \ from \ the \ mirror}}$

Which gives;

$\dfrac{6\frac{1}{3} \, ft.}{5 \, ft.} = \mathbf{ \dfrac{h}{40 \, ft.}}$

$h = 480 \, in. \times \dfrac{76 \, in.}{60 \, in.} = 608 \, in. = \mathbf{50 \frac{2}{3} \, ft. = 50 \, feet \ 8 \, inches}$

The height of the mountain is approximately 50 feet 8 inches

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4 0

2 years ago