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3 years ago

Estimate the project of 7.8 and 11.4 by rounding

Mathematics

1 answer:

ozzi3 years ago

4 0

The estimate is 10 times 11 it equals 110

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Brainliest if you guess my age :)

LenaWriter [7]

Answer:

Step-by-step explanation:

or 16

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3 years ago

Read 2 more answers

I have 5 digits. My 9 is worth 9 ∗ 10,000. My 2 is worth 2 thousand. One of my 7s is worth 70. The other is worth 10 times as mu

Natasha2012 [34]

The answer is 92,776 because 10 times as much as 70 is 700 which gives the answer for the hundreds position.

6 0

3 years ago

A sphere is inscribed in a cube with a surface area of 216 square centimeters. What is the volume of the sphere

pentagon [3]

Answer:

$V=298.5cm^3$

Step-by-step explanation:

To find the volume of the sphere we need to know its radius.

And the radius can be found with the information we have about the surface area.

The formula for the surface area is as follows:

$SA=4\pi r^2$

from this formula we clear the radius r:

$r^2=\frac{SA}{4\pi}\\ \\r=\sqrt{\frac{SA}{4\pi} }$

and we substitute the known value of the surface area, and also the value of $\pi$ :

$r=\sqrt{\frac{216cm^2}{4(3.1416)} }\\ \\r=\sqrt{\frac{216cm^2}{12.5664} }\\ \\r=\sqrt{17.1887cm^2}\\ \\r=4.146cm$

and now that we know the radius we find the volume:

$V=\frac{4\pi r^3}{3} \\\\V=\frac{4(3.1416)(4.146cm)^3}{3}\\ \\V=\frac{895.521cm^3}{3}\\ \\V=298.5cm^3$

the volume of the sphere is $298.5cm^3$

7 0

2 years ago

Karissa is a vet tech who earns $9.64 per hour. What are her total

Ymorist [56]

Answer:

385.6

Step-by-step explanation:

The wage times the hours worked find the total she makes.

6 0

2 years ago

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Can someone please help me with this

gizmo_the_mogwai [7]

Answer:

3. How many faces do each of the following have?

cube - 6 faces
square pyramid - 5 faces
triangular pyramid - 4 faces
pentagonal pyramid - 6 faces

Hope this helps!

5 0

2 years ago