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sergij07 [2.7K]
3 years ago
13

Find the zeros of f(x) = x^2+5x-6. A. {-2,3} B. {-6,1} c. {-2,-3} D. {-6,-1}

Mathematics
1 answer:
Arisa [49]3 years ago
7 0

Answer:

x^2+5x-6

a = 1  b = 5 and c = -6

Using the quadratic formula:

x = [-5 +- sq root (25 -4 * 1 *-6) ] / 2 * 1

x = [-5 +- sq root (49)] / 2

x = [-5 +- 7] / 2

x1 = 1

x2 = -6

Step-by-step explanation:

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erastovalidia [21]
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3 years ago
Find a marginal Profit function if cost and revenue are given by c(x)=240+0.3x and r(x)=8x-0.06x^2
RoseWind [281]

Answer:

  p'(x) = -0.12x +7.7

Step-by-step explanation:

Profit is the difference between revenue and cost:

  p(x) = r(x) -c(x)

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Marginal profit is the derivative of this function:

  p'(x) = -0.12x +7.7

8 0
3 years ago
What is 25 x 10^6?<br> Someone help me I don't understand this at all!<br> Thanks
Evgen [1.6K]

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First thing we do is simplify 10 to the second power, and 10^6 = 10,000,000.

The final step is to multiple 25 by 10,000,000, and we'll get our answer: 25,000,000.

8 0
3 years ago
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svetlana [45]
The answer is b or c
8 0
3 years ago
One number is five less than a second number. Twice the first is 6 more than 6 times the second. Find the numbers.
Mashutka [201]

Answer:

The first number is −13 and the second number is −6

Step-by-step explanation:

The first number is −13 and the second number is −6

<u>Explanation:</u>

<u>Let's let the first number be n and the second number be called m.</u>

<u>Then, from the first sentence we can write:</u>

n = m − 7

<u>and from the second sentence we can write:</u>

2n = 6m + 10

<u>Substitute m − 7 for n in the second equation and solve for m:</u>

2(m − 7) = 6m + 10

2m − 14 = 6m + 10

2m − 14 − 2m − 10 = 6m + 10 − 2m − 10

−14 −10 = 6m −2m

−24 = 4m

-24/4 = 4m/4

m= −6

<u>Now substitute −6 for m in the first equation and calculate n:</u>

n = −6 −7

n = -13

4 0
3 years ago
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