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Fantom [35]
3 years ago
12

Twenty-one is what percent of 28?

Mathematics
1 answer:
vladimir2022 [97]3 years ago
5 0
Twenty-one is 75% of 28
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What is the definition of polygon????
djyliett [7]
<span>a plane figure with at least three straight sides and angles, and typically five or more.</span>
7 0
2 years ago
Last year 12 records in his collection now he has 15 records what is his percent increase of his Collection
Nesterboy [21]

Given that,

Last year record = 12

This year record = 15.

To find,

The percent increase of his Collection.

Solution,

The percent increase in his collection is given by :

\%=\dfrac{\text{final collection-initial collection}}{\text{initial collection}}\times 100\\\\=\dfrac{15-12}{12}\times 100\\\\=25\%

So, the percent increase of his collection is 25%.

3 0
3 years ago
A bee flies at 9 feet per second directly to a flower bed from its hive. The bee stays at the flowerbed for 15 minutes, and then
Ivan

Complete question is;

A bee flies at 9 feet per second directly to a flower bed from its hive. The bee stays at the flowerbed for 15 minutes, and then flies directly back to the hive at 6 feet per second. It is away from the hive for a total of 18 minutes.

a. What equation can you use to find the distance of the flowerbed from the hive?

b. How far is the flowerbed from the hive?

Answer:

A) (d/9) + 900 + (d/6) = 1080

B) d = 648 ft

Step-by-step explanation:

A) We are told that A bee flies at 9 feet per second directly to a flower bed from its hive.

Time taken is given as;

t = distance/speed

If distance is d from the hive to the flower bird.

Then, t1 = d/9

The bee stays at the flowerbed for 15 minutes. Thus, time spent at the flowerbird in seconds is; t2 = 15 × 60 = 900 seconds.

We are told that the bee flew directly back to the hive at 6 feet per second.

Thus,time is;

t3 = d/6

Since total time spent away from hive is 18 minutes, then converting to seconds, we have; t = 18 × 60 = 1080 s

Thus;

(d/9) + 900 + (d/6) = 1080

B) Since we have derived;

(d/9) + 900 + (d/6) = 1080

Then we can find d.

Multiply through by 18 to get;

2d + (900 × 18) + 3d = 1080 × 18

2d + 16200 + 3d = 19440

5d = 19440 - 16200

5d = 3240

d = 3240/5

d = 648 ft

4 0
2 years ago
If two-thirds of Sam's weekly income is $480, what is one-fourth of his weekly income?
Butoxors [25]

Answer:

180$

Step-by-step explanation:

If two-thirds of Sam's weekly income is $480

so total is $720

720$/4= 180$

3 0
3 years ago
Read 2 more answers
What is the best path to convert 100 liters to pints?
Pachacha [2.7K]
1 liter is equal to 2.11338 pints
 
To convert 100 liters to pints you would do 100 * 2.11338, or move the decimal place two places to the right, so you have 211.338 pints.
5 0
3 years ago
Read 2 more answers
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