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3 years ago

Use the percent. proportion to solve 40% of what is 30?

Mathematics

1 answer:

AleksAgata [21]3 years ago

3 0

Answer:

i belive its 75 percent

Step-by-step explanation:

the question is worded strangly

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Helppp i will mark brainliest <3

hodyreva [135]

Answer:

59.8*4=239.2 rounded to the nearest foot is 239

Step-by-step explanation:

6 0

3 years ago

Please solve these. Will rate you 5 star!

ziro4ka [17]

Answer: Hi!

To find the answer for question 24, we would first find the square root of 20 and 5. The square root of 20 is about 4.47 (I used a calculator for convenience) and the square root of 5 is about 2.24. Now we need to add these:

4.47 + 2.24 = 6.71

Now we divide 30 by this:

30/6.71 = 4.47

Now, we'll evaluate the answer choices.

a) is equal to 1.49

b) is equal to 13.4

c) is equal to 4.47

d) is equal to 26.88

The answer choice that is correct is c, because it is what we got for the problem that we were supposed to solve in the beginning.

Hope this helps!

7 0

3 years ago

Three water storage containers have the same volume in the shape of a cylinder, a cone, and a sphere. The base radius of the cyl

fredd [130]

Answer:

- The ratio of the height of the cone to the height of the cylinder is 3:1

- The ratio of the height of the cone to radius of the sphere is 4:1

Step-by-step explanation:

Note that the radii of all the structures are the same.

Let the height of the cone be H and the height of the cylinder be h

The volume of each of the shapes are given below as

Volume of cylinder = πr²h

Volume of a cone = (1/3)πr²H

Volume of a sphere = (4/3)πr³

1) The ratio of the height of the cone to the height of the cylinder

To obtain this, we equate the volume of those two structures

Volume of the cone = Volume of the cylinder

(1/3)πr²H = πr²h

πr² cancels out on both sides and we're left with

(H/3) = h

H = 3h

(H/h) = (3/1)

So, The ratio of the height of the cone to the height of the cylinder is 3:1

2) The ratio of the height of the cone to radius of the sphere

Similarly equating the volumes of the cone and the sphere

(1/3)πr²H = (4/3)πr³

(1/3)πr² cancels out on both sides and we're left with

H = 4r

(H/r) = (4/1)

The ratio of the height of the cone to radius of the sphere is 4:1

Hope this Helps!!!

8 0

4 years ago

Simplify the expression (-8/15)+(1/15)

Mice21 [21]

If it is fractions then the answer is -7/15. Think of as 8/15 - 1/15 except the answer is a negative number

4 0

3 years ago

84 is 30% of what number? 2.8 25.2 280 2520

frez [133]

The right answer is 280

please see the attached picture for full solution

Hope it helps

Good luck on your assignment

4 0

3 years ago

Read 2 more answers