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Anon25 [30]
3 years ago
9

If (x) = 5x -12 what is f(2)?

Mathematics
1 answer:
makvit [3.9K]3 years ago
4 0

Answer:

f(2) = - 2

Step-by-step explanation:

To evaluate f(2) substitute x = 2 into f(x), that is

f(2) = 5(2) - 12 = 10 - 12 = - 2

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Suppose the number of messages that an inbox receives may be modeled by a Poisson distribution. If the average number of message
docker41 [41]

Answer:

0.36427

Step-by-step explanation:

Mean = λ = 18 messages per hour

P(X = x) = (e^-λ)(λ⁻ˣ)/x!

P(X ≤ x) = Σ (e^-λ)(λ⁻ˣ)/x! (Summation From 0 to x)

But the probability required is that the messages thay come in an hour is between 15 and 20, that is, P(15 < X < 20)

P(15 < X < 20) = P(X < 20) - P(X ≤ 15)

These probabilities will be evaluated using a cumulative frequency calculator.

P(X < 20) = 0.65092

P(X ≤ 15) = poissoncdf(18, 15) = 0.28665

P(15 < X < 20) = P(X < 20) - P(X ≤ 15) = 0.65092 - 0.28665 = 0.36427.

You can use the Poisson distribution calculator here

https://stattrek.com/online-calculator/poisson.aspx

4 0
3 years ago
WILL GIVE 100 POINTS AND BRAINLIEST FOR BEST ANSWER
coldgirl [10]

Answer:

Step-by-step explanation:-16x^2 + 24x + 16 = 0.

A. Divide by 8:

-2x^2 + 3x + 2 = 0, A*C = -2*2 = -4 = -1 * 4. Sum = -1 + 4 = 3 = B, -2x^2 + (-x+4x) + 2 = 0,

(-2x^2-x) + (4x+2) = 0,

-x(2x+1) + 2(2x+1) = 0,

(2x+1)(-x+2) = 0, 2x+1 = 0, X = -1/2. -x+2 = 0, X = 2.

X-intercepts: (-1/2,0), (2,0).

B. Since the coefficient of x^2 is negative, the parabola opens downward. Therefore, the vertex is a maximum.

Locate the vertex: h = Xv = -B/2A = -24/-32 = 3/4, Plug 3/4 into the given Eq to find k(Yv). K = -16(3/4)^2 + 16(3/4) + 16 = 19. V(h,k) = V(3/4,19).

C. Choose 3 points above and below the vertex for graphing. Include the points calculated in part A which shows where the graph crosses the x-axis.

4 0
3 years ago
Can someone help me this is due tonight
kobusy [5.1K]

Answer:

Step-by-step explanation:

x% of y equals to 0.01*x*y

Just put the numbers in the formula

4 0
3 years ago
Read 2 more answers
What is the remainder of 5x^2 - 3x - 36 divided by x - 3
lidiya [134]

Answer:

5x^-3x-36/x-3

Step-by-step explanation:

3 0
3 years ago
HELP DUE NOW GIVING BRAINLIST HELP ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Sergeeva-Olga [200]

Answer:

1) distributive property.

Step-by-step explanation:

Becca used the distributive property, in that she distributed (multiplied) 4 to all terms within the parenthesis:

4(x + 2) = 4x + 8

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8 0
3 years ago
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