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3 years ago

15

I need to factor 5a^2 + 7a + 6b^2 - 4b but I can't figure it out.......could it possibly be prime?

1 answer:

DiKsa [7]3 years ago

7 0

I kind of forgot how to do it but here is what I know so far : first you separate the two parts into (5a^2 + 7a) + (6b^2-4b). This process is called grouping. Now you find the greatest common factor in both of them which later your equation will be a(5a + 7) +2b(3b - 2). That is all I can remember so hope that helped

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Read 2 more answers

Use the table to find the experimental probability of spinning a number less than 2. Write your answer as a fraction.

Sophie [7]

Answer:

<em>The experimental probability of spinning a number less than 2</em>

P( x<2) = 0.14

Step-by-step explanation:

Given data table

x 7 10 8 8 8 9 = total 50

P(X=x) $\frac{7}{50} = 0.14$ $\frac{10}{50} = 0.2$ $\frac{8}{50} = 0.16$ $\frac{8}{50} = 0.16$ $\frac{8}{50} = 0.16$ $\frac{9}{50} = 0.18$

Sum of the probabilities is equal ∑x P(x=x)

= 0.14 +0.2 +0.16 +0.16+0.16 +0.18

=1

Given data table

spinning

a spinner 1 2 3 4 5 6

x 7 10 8 8 8 9

P(X=x) 0.14 0.2 0.16 0.16 0.16 0.18

<em>The experimental probability of spinning a number less than 2</em>

P( x<2) = P( x=0) +P(x=1)

= 0 + 0.14

<em> The experimental probability of spinning a number less than 2</em>

<em>P( x<2) = 0.14</em>

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3 years ago