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2 years ago

If (a-b)²=7 and (a²+b²) =29.what is ab? Plssss asap

Mathematics

1 answer:

navik [9.2K]2 years ago

6 0

Answer:

Given - (a-b)²=7

(a²+b²) =29

To find - ab

Solution -

( a- b) ^2 = 7

(a^2 + b^2) = 29

Expanding the bracket by using identity

a^2 + b^2 -2ab = 7

29 - 2ab = 7 (given a^2 + b^2 = 29 )

-2ab = 7 -29

-2ab = (-22)

ab = (-22) /(-2)

ab = 11

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There are 412 students and 20 teachers taking buses on a trip to a museum. Each bus can seat a maximum of 48. Which inequality g

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The inequality $\mathrm{b} \geq \frac{\text { total number of travelers }}{\text { capacity of each bus }}$ gives the least number of buses, b, needed for the trip. The least number of buses is 9

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Given that, There are 412 students and 20 teachers taking buses on a trip to a museum.

Each bus can seat a maximum of 48.

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Now, there are 412 students and 20 teachers, so in total there are 412 + 20 = 432 travelers

The number of buses required “b” is given as:

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Number of buses required ≥ 9 buses.

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If (a-b)²=7 and (a²+b²) =29.what is ab? Plssss asap​

If (a-b)²=7 and (a²+b²) =29.what is ab? Plssss asap