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3 years ago

The area in square feet of a rectangular field is x - 70x + 1200. The width, in feet, is x - 30. What is the length, in feet?

Mathematics

1 answer:

Maslowich3 years ago

6 0

Answer:-20

Step-by-step explanation:

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What is the equation x^2+12x-3=16 written in the form (x-p)^2=q using the method of completing the square ?

Alexus [3.1K]

Step-by-step explanation:

${x}^{2} + 12x - 3 = 16$

${x}^{2} + 12x = 19$

${x}^{2} + 12x + 36 = 19 + 36$

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3 years ago

For a class trip, 114 students are put on for buses. At this rate, how many students would be on eight buses?

balu736 [363]

The answer is 228 students

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3 years ago

Read 2 more answers

In 1992, the average electric bill for a single

Aleksandr [31]

Answer:

Price went up, $24.64/year for 28 years

Step-by-step explanation:

Change Year = 28

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3 years ago

Express p in terms of q if

Irina-Kira [14]

$p=x^2+\dfrac{1}{x^2}\\\\p=\dfrac{x^4}{x^2}+\dfrac{1}{x^2}\\\\p=\dfrac{x^4+1}{x^2}\qquad(*)$

$q=x+\dfrac{1}{x}\\\\q=\dfrac{x^2}{x}+\dfrac{1}{x}\\\\q=\dfrac{x^2+1}{x}\qquad\text{square both sides}\\\\q^2=\left(\dfrac{x^2+1}{x}\right)^2\\\\q^2=\dfrac{(x^2+1)^2}{x^2}\qquad\text{use}\ \ (a+b)^2=a^2+2ab+b^2\\\\q^2=\dfrac{(x^2)^2+2(x^2)(1)+1^2}{x^2}\\\\q^2=\dfrac{x^4+2x^2+1}{x^2}\\\\q^2=\dfrac{x^4+1}{x^2}+\dfrac{2x^2}{x^2}\\\\q^2=\dfrac{x^4+1}{x^2}+2\qquad\text{subtract 2 from both sides}\\\\q^2-2=\dfrac{x^4+1}{x^2}\\\\\text{From (*) we have}\\\\\boxed{p=q^2-2}$

8 0

2 years ago

Use an array and partial products to find

creativ13 [48]

Well done mate you’re correct.

3 0

2 years ago