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Ymorist [56]
3 years ago
7

20 POINTS. Use a ratio box to solve the problem. The ratio of carnivores to herbivores is 2 to 7. If there were 126 carnivores i

n the jungle how many herbivores were there
Mathematics
1 answer:
nignag [31]3 years ago
8 0

Answer:

Step-by-step explanation:

\frac{herbivores}{carnivores}=\frac{7}{2} \\\\\frac{x}{126} =\frac{7}{2} \\x=\frac{7}{2} *126=441

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He fills 3 tanks. Hope this helps!

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Altogether Central High School's bands have 40 trumpets and 35 tubas. Carlee says the ratio of trumpets to tubas is 40:35. Danny
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because if in 40:35 you divide 40 and 35 by 5 it is equal to 8:7

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3 years ago
Use the Factor Theorem and synthetic division to show x + 5 is a factor of f(x) = 2x3 + 7x2 − 14x + 5
olga2289 [7]

Answer:

Factor theorem: f(-5) = 0.

Synthetic division: f(x) = (x + 5)\, (2\, x^2 -3\, x + 1).

Step-by-step explanation:

<h3>Factor Theorem</h3>

By the factor theorem, a monomial of the form (x - a) (where a is a constant) is a factor of polynomial f(x) if and only if f(a) = 0.

In this question, the monomial is (x + 5), which is equivalently (x - (-5)). a = -5.

\begin{aligned}& f(-5) \\ &= 2 \times (-5)^{3} + 7 \times (-5)^{2}- 14\times (-5) + 5\\ &= -250 + 175 + 70 + 5 \\ &= 0\end{aligned}.

Hence, by the factor theorem,  (x + 5), which is equivalent to (x - (-5)), is a factor of f(x).

<h3>Synthetic Division</h3>

\begin{aligned}& f(x) \\ &= 2\, x^{3} + 7\, x^{2} - 14\, x + 5 \\ &= \underbrace{(x + 5) \, (2\, x^2)}_{2\, x^{3} + 10\, x^{2}} - 3\, x^{2} - 14\, x + 5 \\ &= \underbrace{(x + 5) \, (2\, x^2)}_{2\, x^{3} + 10\, x^{2}} + \underbrace{(x + 5)\, (-3\, x)}_{-3\, x^{2} - 15\, x} + (x + 5) \\ &= (x + 5)\, (2\, x^{2} - 3\, x + 1)\end{aligned}.

The remainder is 0 when dividing f(x) by (x + 5). Hence, (x + 5)\! is a factor of f(x)\!.

6 0
4 years ago
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Katyanochek1 [597]

Answer:

y = 2/3x + 1    

Step-by-step explanation:

<u>3y = 2x + 3 </u>           Divide all by 3

3       3      3

y = 2/3x + 1           Slope is 2/3

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