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3 years ago

How can you use 10% and 20% of an amount to find 15% of anl amount?

1 answer:

3 0

You just need to know how much 10% is and then you just divided what 10% is and that will be equal to 5% and then you just add the 10 % and 5%

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In ancient egypt, a scribe equated the area of a circle with a diameter of 9 units to the area of a square with a side length of

Rudik [331]

Answer:

$\pi =3.160494$

Step-by-step explanation:

step 1

Find the area of the circle with a diameter of 9 units

we know that

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r=9/2=4.5\ units$ ----> the radius is half the diameter

substitute

$A=\pi (4.5)^{2}$

$A=20.25\pi\ units^2$

step 2

Find the area of a square with a side length of 8 units

we know that

The area of the square is

$A=b^2$

where

b is the length side of the square

we have

$b=8\ units$

substitute

$A=(8)^2=64\ units^2$

step 3

Equate the areas

$20.25\pi=64$

solve for $\pi$

$\pi =\frac{64}{20.25}=3.160494$

5 0

3 years ago

Plsss help ASAP This is the question

krok68 [10]

Answer: 81

since it's the 4th power then you do 3x3x3x3= 81

Step-by-step explanation:

5 0

3 years ago

If you can run 5 miles in 45 minutes how fast is this in miles per hour?

balandron [24]

Answer:

6.67 Miles Per Hour

Step-by-step explanation:

6 0

2 years ago

Find the volume of the rectangular prism.

gavmur [86]

Answer:

The answer is C, 281.25 cubic feet.

Step-by-step explanation:

First, you need to multiply all three sides of the rectangular prism.

10x4.5=45

45x6.25=281.25

So the answer is 281.25

Hope this helps!

5 0

3 years ago

Going to college can cost a lot! What are some costs of attending college? Come up with at least 3 different costs.

scoray [572]

Buying books, your dorm and maybe a ride to get to school

6 0

2 years ago

Read 2 more answers