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vovikov84 [41]
2 years ago
3

What are the x-intercepts of the function f(x) = –2x2 – 3x + 20? (–4, 0) and five-halves five-halves and (4, 0) (–5, 0) and (2,

0) (–2, 0) and (5, 0)
Mathematics
2 answers:
Rus_ich [418]2 years ago
8 0

Answer:

(-4, 0) and (5/2, 0)

Step-by-step explanation:

f(x) = –2x2 – 3x + 20

factor  using the diamond method

-2*20 = -40

so  -8 * 5 = -40  and   -8 + 5 = -3  so...

f(x) = -2x^2 - 8x + 5x  + 20

f(x) = -2x (x + 4) + 5 *(x + 4)

f(x) = (-2x + 5)*(x + 4)

x-intercepts are   x = 5/2  and x =-4

(-4, 0) and (5/2, 0)

Anastasy [175]2 years ago
8 0

Answer:

(-4, 0) and (5/2, 0)

Step-by-step explanation:

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Recall that

\cos^2\theta+\sin^2\theta=1

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\dfrac{\sin\theta}{\sqrt{1-\sin^2\theta}}=\dfrac{\sin\theta}{\cos\theta}=\tan\theta

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2 years ago
Sandra Leatherwood invested money received from a game show for 10 months at 9% interest.
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P=i/rt
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2 years ago
Nora is running a race that is 26.2 miles. She is running at a speed of 8 miles per hour. She has completed 3/4 of the race. How
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2 years ago
The Golden Braid Bookstore currently has $340,000 in cash, $280,000 in inventory, and $40,000 in accounts receivable. The compan
Ivenika [448]

Answer:

The quick ratio is 4.75:1.

Step-by-step explanation:

From the given information it is clear that:

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Inventory = $280,000

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Accounts payable = $65000

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2 years ago
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Answer:

<u>Michelle has 17 pencils</u>

Step-by-step explanation:

Number of pencils Leslie has = 8 (She has 9 fewer pencils than Michelle)

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How many pencils does Michelle have?

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2 years ago
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