3 years ago

Which of the following is a prime factor of 6x2 + 6x - 12?

2 answers:

4 0

6x² + 6x - 12 = 6(x² + x - 2) = 6(x² + 2x - x - 2)

= 6(x·x + 2·x - 1·x - 1·2) = 6[x(x + 2) - 1(x + 2)]

= 6(x + 2)(x - 1)

6x² + 6x - 12 = 6(x + 2)(x - 1)

bazaltina [42]3 years ago

3 0

Solutions

$6x^2 + 6x - 12 = 6(x^2 + x - 2) = 6(x^2 + 2x - x - 2)


= 6(x*x + 2*x - 1·x - 1*2) = 6[x(x + 2) - 1(x + 2)]


= 6(x + 2)(x - 1)


6x^2+ 6x - 12 = 6(x + 2)(x - 1)$

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jason runs 440 yards in 75 seconds. At this rate, how many minutes does it take him to run a mile? (1 mile = 1,760 yards).

mamaluj [8]

Answer:

5 minutes

Step-by-step explanation:

we know that

Jason runs 440 yards in 75 seconds

using proportion

Find out how many minutes does it take him to run a 1.760 yards (one mile)

$\frac{440}{75}=\frac{1,760}{x}\\\\x=1,760(75)/440\\\\x= 300\ sec$