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CaHeK987 [17]
3 years ago
14

Use the drop-down menus to choose steps in order to correctly solve 3+4d−14=15−5d−4d for d.

Mathematics
2 answers:
Kisachek [45]3 years ago
8 0

Answer:

d=2

Step-by-step explanation:

SHOWN BELOW

8090 [49]3 years ago
7 0

Answer: d = 2

Step-by-step explanation:

3 + 4d - 14 = 15 -5d - 4d

First, we collect the like terms

4d + 5d + 4d = 15 + 14 -3

13d = 29 - 3

13d = 26

We divide bothside by 13

13d/13 = 26/13

d = 2

Therefore d = 2

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What is the number if 6/7 of 28 is equal to 30% of that number.
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Answer:

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4 years ago
What are the possible rational roots of the polynomial equation?<br><br> 0=2x7+3x5−9x2+6
RoseWind [281]

Answer: \pm\frac{1}{1}, \pm\frac{1}{2},\pm\frac{2}{1},\pm\frac{3}{1}, \pm\frac{3}{2}

Step-by-step explanation:

We can use the Rational Root Test.

Given a polynomial in the form:

a_nx^n +a_{n- 1}x^{n - 1} + … + a_1x^1 + a_0 = 0

Where:

- The coefficients are integers.

- a_n is the leading coeffcient (a_n\neq 0)

- a_0 is the constant term a_0\neq 0

Every rational root of the polynomial is in the form:

\frac{p}{q}=\frac{\pm(factors\ of\ a_0)}{\pm(factors\ of\ a_n)}

For the case of the given polynomial:

2x^7+3x^5-9x^2+6=0

We can observe that:

- Its constant term is 6, with factors 1, 2 and 3.

- Its leading coefficient is 2, with factors 1 and 2.

 Then, by Rational Roots Test we get the possible rational roots of this polynomial:

\frac{p}{q}=\frac{\pm(1,2,3,6)}{\pm(1,2)}=\pm\frac{1}{1}, \pm\frac{1}{2},\pm\frac{2}{1},\pm\frac{3}{1}, \pm\frac{3}{2}

5 0
3 years ago
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