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3 years ago

3 1/5 divided by a number equals 4 1/2

2 answers:

4 0

(3 1/5) / x = 4 1/2
(16/5) / x = 9/2 ....multiply both sides by x, eliminating the x on the left
16/5 = 9/2x
16/5 * 2/9 = x
32/45 = x

mr_godi [17]3 years ago

3 0

The answer is 1 3/10

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2 years ago

Which of the values shown are potential roots of f(x) = 3x3 – 13x2 – 3x + 45? Select all that apply.

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All potential roots are 3,3 and $-\frac{5}{3}$ .

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Potential roots of the polynomial is all possible roots of f(x).

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Using rational root theorem test. We will find all the possible or potential roots of the polynomial.

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q=All the positive/negative factors of 3

$p=\pm 1,\pm 3,\pm 5\pm \pm 9,\pm 15\pm 45$

$q=\pm 1,\pm 3$

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$\frac{p}{q}=\pm 1,\pm 3,\pm 5\pm \pm 9,\pm 15\pm 45,\pm \frac{1}{3},\pm \frac{5}{3}$

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$f(-1)= 3\times (-1)^3-13\times (-1)^2-3\times (-1)+45\Rightarrow \neq 32$

$f(-3)= 3\times (-3)^3-13\times (-3)^2-3\times (-3)+45\Rightarrow \neq -144$

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