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xxTIMURxx [149]
3 years ago
7

Perform the indicated operation. 8/a - 6/a + 7/a

Mathematics
1 answer:
Jlenok [28]3 years ago
3 0

Answer:

9/a

Step-by-step explanation:

8/a - 6/a + 7/a

Since the denominators are the same, we can add the numerators

8-6+7 =9

Then put it over the common denominator a

9/a

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Answer:

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Step-by-step explanation:

Let's assume that

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v_2\ =\ 30i

=> speed of first car,

u_1\ =\ \sqrt{(20)^2+(25)^2}

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       = 32.01 units

and speed of second car,

u_2\ =\ \sqrt{(30)^2+(0)^2}

        = 30 units

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Hence, 2nd car is running faster than the first car by 2.01 units.

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Mrs.Wing is preparing to tape up posters made by her students on the wall. She cuts tape into 1/4 foot pieces. How many 1/4 piec
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