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shtirl [24]
4 years ago
6

The function f(x) = 2x2 + 3x + 5, when evaluated, gives a value of 19. What is the function’s input value?

Mathematics
1 answer:
iren2701 [21]4 years ago
4 0
F(x)......ur output = 19

19 = 2x^2 + 3x + 5
2x^2 + 3x + 5 - 19 = 0
2x^2 + 3x - 14 = 0
(2x + 7)(x - 2) = 0

2x + 7 = 0
2x = -7
x = -7/2

x - 2 = 0
x = 2

I believe there is 2 possible answers......x (ur input value) = -7/2 or 2
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Answer:

The required probability is \frac{1}{8} or 0.125

Step-by-step explanation:

Consider the provided information.

The spinner is spin twice and we want the sum should be 5.

We can get 5 if first spin gives us 2 and second spin gives 3.

Or we can get 5 if first spin gives us 3 and second spin gives 2.

There are 8 section out off which Three sections numbered 1, one section numbered 2, and four sections numbered 3.

The probability of getting 2 is \frac{1}{8}

The probability of getting 3 is \frac{4}{8}

Now, the probability that the sum of the two spins will be five is:

\frac{1}{8}\times \frac{4}{8}+\frac{4}{8}\times \frac{1}{8} =\frac{4}{64}+\frac{4}{64}=\frac{1}{8}

Hence, the required probability is \frac{1}{8} or 0.125

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4 years ago
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Step-by-step explanation:

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3 0
3 years ago
For the function y=-3+ cos (x + 4)], what is the minimum value?
Mrac [35]

Answer:

-4 is the mimumum of y=-3+cos(x+4)

Step-by-step explanation:

The minimum value of y=cos(x) is -1.

The minimum value of y=cos(x+4) is still -1; the +4 inside the cosine function only affected the horizontal shift.

The minimum value of y=-3+cos(x+4) is -3-1 which is -4.  This brought the graph down 3 units so if the minimum was previously -1 and it got brought down 3 units then it's new minimum is -4.

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3 years ago
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atroni [7]
Start by creating a linear equation based on the information given:
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Thus, it rained 9 days in desert hills.
7 0
3 years ago
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elena55 [62]

Answer: 2y/w-3x

That should be correct

6 0
3 years ago
Read 2 more answers
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