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3 years ago

If f(x)=2x2+3 then which of the following represents f(x+1)

Mathematics

1 answer:

defon3 years ago

4 0

Answer:2.2+3=x+1

4+3=x+1

7=x+1

X=6

Step-by-step explanation:

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Equation 2 ==> y = x - 3

Substitude equation 2 into 1

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-5 = -5x
x = 1

Substitude x into equation 2

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3 years ago

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The probability that a lab specimen contains high levels of contamination is 0.10. A group of 4 independent samples are checked.

galben [10]

Answer:

a) 0.6561

b) 0.2916

c) 0.3439

Step-by-step explanation:

We are given the following information:

Let us treat high level of contamination as our success.

p = P(High level of contamination) = P(success) = 0.10

n = 4

The, by binomial distribution:

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}\\\text{where x is the number of success}$

a) P(No high level of contamination)

We put x = 0, in the formula.

$P(X=0) = \binom{4}{0}.(0.10)^0.(1-0.10)^{4} =0.6561$

Probability that no lab specimen contain high level of contamination is 0.6561

b) P(Exactly one high level of contamination)

We put x = 1, in the formula.

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c) P(At least one contains high level of contamination)

$p(x \geq 1) = 1 - p( x = 0) = 1 - 0.6561 = 0.3439$

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3 years ago

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We can form a system of equations:
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KIM [24]

Area of the sector = 1/2 * r^2 * theta where theta is the angle subtended by the arc at the center ( in radians)

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3 years ago

If f(x)=2x2+3 then which of the following represents f(x+1)​

If f(x)=2x2+3 then which of the following represents f(x+1)