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tatyana61 [14]
3 years ago
7

Which of the following is not closed under the operation being performed ?

Mathematics
1 answer:
photoshop1234 [79]3 years ago
8 0
The answer is c because I checked the math on the paper. 
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a copy machine can print 810 copies every 9 minutes. A laser printer printed 1,350 copies. How long did it take to print?
Gre4nikov [31]

Answer:

15

Step-by-step explanation: You would think 15. 810 copies every 9, minutes. Nine divided by 810 equals 90. 90 copies every minute. 1,350 divided by 90 is fifteen. =fifteen.

5 0
2 years ago
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The sum of the squares of two positive integers is 90. The product of the two integers is 27. What is the sum of the two integer
polet [3.4K]
The two integers are 3 and 9.
3^2+9^2=90
9*3=27
9+3=12
The sum of the two integers is 12.
8 0
3 years ago
6.71 x10^8 miles per hour in standard form
xeze [42]
10^8=100000000
100000000x6.71=671,000,000
The awnser is 671,000,000
5 0
3 years ago
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In ΔPQR, r = 4.9 cm, ∠R=21° and ∠P=104°. Find the length of p, to the nearest 10th of a centimeter.
Galina-37 [17]

Answer:7 +7=14/8Step-by-step explanation:

4 0
2 years ago
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The original sales price of a jacket to the original price is 3:4. The original price is $64 what is the sales price
natka813 [3]
So we need to find a number that has the same ratio to 64 as 3 has to four. We do this by diving 64 into 4:(this is 16): so the two ratios are different by 16. To find the remaining number we multiply  3 by 16: this is 48. So 48 has the same ratio to 64 as 3 has to 4.

And 48 is the answer!
6 0
3 years ago
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