When is the best time to use a bar graph

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

4 0

Bar graphs are often use to compare data.. so if you comparing data that would be the exact time to use it

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How to factor 6n2 - 6n - 12

alexandr402 [8]

We see that in these 3 terms, 6 is a common factor. So, let's factor out a 6:

$6n^2-6n-12 = 6(n^2-n-2)$

We can set this equal to 0 and factor by using the quadratic formula which is:

$x = \frac{-b \pm \sqrt{b^2-4ac} }{2a}$

So, let's do just that:

$6(n^2-n-2) = 0$

Note that the 6 goes away if you divide both sides by 6. In this case, a = 1, b = -1, and c = -2. Let's plug that into the quadratic equation:

$\frac{1 \pm \sqrt{(-1)^2-4(1)(-2)} }{2(1)} = \frac{-1 \pm \sqrt{1-(-8)} }{2}$

$\frac{-1 \pm \sqrt{9} }{2} = {1, -2}$

So, we can write this as:

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

Notice that the 6 comes back because it was only temporarily mad. And that the roots have opposite signs in the parentheses because to find the roots, you need to set each parentheses equal to 0 and solve for n. With that in mind, your final answer is 6(n-1)(n+2). Hope I could help you!

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3 years ago

A farmer planted 2/5 of his 60 acres in beans and 4/10 of his 60 acres in corn. What fraction of the 60 acres had been planted i

yanalaym [24]

The answer is that 48 have been planted with bean and corn and 24 acres is beans and another 24 acres is corn

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3 years ago

Select all the expressions that have the same value.

Hunter-Best [27]

Answer:

There's no expressions.

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