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bulgar [2K]
3 years ago
11

A square had a perimeter of 28 ft. What is its area?

Mathematics
2 answers:
Usimov [2.4K]3 years ago
7 0
You will find the side by 28 ÷ 4 = 7 ft because a square has 4 equal sides.
Then we will do side × side to find the area of a square, so 7 × 7 = 49 ft²
So the answer is 49ft²
Sloan [31]3 years ago
5 0
I think the anwer 56 becase u add all side 




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If 1⁄50 of an amount is 12, what is 1⁄20?
Alika [10]
You start by changing both the a common denominator, this case it would be 100 so it’s 2/100 and 5/100, since 1/50 and 2/100 is the same, each 1/100 is equal to “6” and you have 5/100, which is EQUAL TO 30
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It takes Amir 4 seconds to run from his front door to the mailbox. If he can run at a top speed of 6.5 m/s, how far is it from h
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If he runs 6.5 metres per second, then you multiply 6.5 by 4 to get 26m
6 0
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I need help... i don't really understand this...
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(3640 - 3250) / 3250 = 390 / 3250 = 39 / 325 = 3 / 25 = 12%
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4 0
3 years ago
Read 2 more answers
A circle of radius 32cm is cut into 8 equal parts calculate the perimeter of each part giving your answer correct to the nearest
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3 0
2 years ago
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A test taker gets 70 on 1st exam, 80 on 2nd exam, 2/3 of 4/5 of his 2nd exam on his 3rd test. If the professor gives 5 points ex
Serga [27]
<h3>Answer:  127</h3>

=================================================

Explanation:

The phrasing "2/3 of 4/5 of his 2nd exam on his 3rd test" is a bit clunky in my opinion. It seems more complicated than it has to be.

The student got 80 on the second exam. 4/5 of this is (4/5)*80 = 0.8*80 = 64. Then we take 2/3 of this to get (2/3)*64 = 42.667 approximately. If we assume only whole number scores are given, then this would round to 43.

Let x be the score on the fourth exam. Since 5 points of extra credit are given, the student actually got x+5 points on this exam.

So we have these scores

  • first exam = 70
  • second exam = 80
  • third exam = 43
  • fourth exam = x+5

Adding up these scores and dividing by 4 will get us the average

(sum of scores)/(number of scores) = average

(70+80+43+x+5)/4 = 80

(x+198)/4 = 80

x+198 = 4*80

x+198 = 320

x = 320 - 198

x = 122

So the student got a score of x+5 = 122+5 = 127 on the fourth exam.

7 0
3 years ago
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