3 years ago

If xy = a and x2 + y2 = b, which of the following is equivalent to 9b – 18a ?

Mathematics

1 answer:

Llana [10]3 years ago

5 0

Answer:

A) (3x -3y)²

Step-by-step explanation:

9b -18a = 9(x² +y²) -18xy

= 9x² -18xy +9y²

= (3x -3y)² . . . . . matches choice A

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If h(x) = 5x - 3 and j(x) = -2x, solve hlj(2)] and select the correct answer below. (1 point)

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Find the widest range of scores that you can get on a final exam in order to receive a grade of B for the class. Using interval

Drupady [299]

Answer:

Correct choice is B

Step-by-step explanation:

Let x% be your final test score, then the average of all test scores is

$\dfrac{96+77+74+x}{4}.$

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3 years ago

Read 2 more answers

Find two consecutive even integers whose sum is 22

andrew11 [14]

10 & 12

x = 1st consecutive even number

x + 2 = 2nd consecutive even number

x + x + 2 = 22

2x + 2 = 22

2x = 20

x = 10

x + 2 = 12

10 and 12 are the two consecutive even numbers

7 0

3 years ago