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2 years ago

What is the volume of the sphere? Round the answer to the nearest cubic unit.

Mathematics

2 answers:

joja [24]2 years ago

8 0

Answer:

Step-by-step explanation:

The formula for the vol. of a sphere is V = (4/3)πr³, where r is the radius.

Here, the radius, r, is 18.

Thus, the volume, in terms of π, is V = (4π/3)(18 units)³

This works out to V = 24429 cubic units (24429 cm³)

This is far different from all of the answer choices. Ensure that you have copied this problem down correctly.

Liula [17]2 years ago

7 0

339 because the it says that the radius is 18

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Phyllis invested 50000 dollars, a portion earning a simple interest rate of 5 percent per year and the rest earning a rate of 7

Elodia [21]

Answer:

The amount invested at 5% was $39,000 and the amount invested at 7% was $11,000

Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

Let

x-----> the amount invested at 5%

50,000-x -----> the amount invested at 7%

$t=1\ year\\ I=\$2,720\\r_1=0.05\\r_2=0.07\\P_1=\$x\\P_2=\$(50,000-x)$

substitute in the formula above

$2,720=x(0.05*1)+(50,000-x)(0.07*1)$

solve for x

$2,720=0.05x+3,500-0.07x$

$0.07x-0.05x=3,500-2,720\\0.02x=780\\x=\$39,000$

$(50,000-x)=\$11,000$

therefore

The amount invested at 5% was $39,000 and the amount invested at 7% was $11,000

5 0

2 years ago

She puts the gifts into a box. She puts a label on one side of the box.How many faces do not have labels?faces.

Kisachek [45]

A closed box has 6 faces.

There is 1 label on 1 face.

Subtract 1 from 6

6 - 1 = 5

5 faces is your answer

Hope this helps

3 0

2 years ago

A convex polyhedron has 10 faces and 11 vertices.<br><br> How many edges does it have?

timofeeve [1]

The <span>polyhedron has 12 faces

</span>

5 0

2 years ago

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The space shuttle can travel at 28968 km/h what distance can it cover in 8 hrs?

Verdich [7]

Given:

A space shuttle can travel at 28968 km/h.

To find:

The distance it can cover in 8 hrs.

Solution:

We have,

Speed of space shuttle = 28968 km/h.

So,

Distance covered by the space shuttle in 1 hour = 28968 km/h.

Distance covered by the space shuttle in 8 hour = (28968 × 8) km

= 231744 km

Therefore, the distance it can cover in 8 hrs is 231744 km.

6 0

2 years ago

A typewriter types 750 words per hour. If she works for 8 hours a day, find the number of words she type

aksik [14]

Answer:

8,000 words

Step-by-step explanation:

If a typewriter types 750 words per hour and she types 8 hours a day she would write 8,000 words a day because 750 x 8 = 8,000.

3 0

1 year ago

Read 2 more answers