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deff fn [24]
3 years ago
15

A batch of 140 semiconductor chips is inspected by choosing a sample of 5 chips. assume that 10 of the chips do not conform to c

ustomer requirements. the number of samples of 5 containing exactly one nonconforming chip is closest to:
Mathematics
1 answer:
never [62]3 years ago
5 0
Because 10 out of 140 chps do not conform to customer requirements, the probability of having a defective chip is
p = 10/140 = 0.0714
The probability of having a good chip is
q = 1 - p = 0.9286

Out of a sample of 5, the probability of finding a defective chip is
₅C₁ p¹ q⁴ = 5*0.0714*0.9286⁴ = 0.2655

The number of defective chips ofu of 5 is 0.2655*5 = 1.3275 ≈ 1

Answer : 1 chip

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Simplify the polynomial by combining like terms
Veseljchak [2.6K]

Answer:

22 x^2

Step-by-step explanation:

Simplify the following:

11 x^2 + 11 x^2

Hint: | Add like terms in 11 x^2 + 11 x^2.

11 x^2 + 11 x^2 = 22 x^2:

Answer:  22 x^2

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8 0
3 years ago
Identify the values that should be written to complete the X diagram.
cestrela7 [59]

Answer:

See the attachment for what goes on your X diagram.

Rewrite: x² -7x +4x -28

Grouping: (x² -7x) +(4x -28) = x(x -7) +4(x -7) = (x +4)(x -7)

Step-by-step explanation:

The given quadratic is ...

... x² -3x -28 . . . . . a=1, b=-3, c=-28

a) The value at the top of the X diagram is the product a·c = 1·(-28) = -28.

The value at the bottom of the X diagram is the coefficient b = -3.

The values on the sides of the diagram are the factors of -28 that add up to make -3. These are -7 and 4. That is, ...

(-7)·(4) = -28

(-7)+(4) = -3

b) Since the two values on the sides of the diagram add up to give "b", the value of "b" in the equation can be rewritten as the sum of these two numbers. Doing that, we have ...

... x² -3x -28

... = x² +(-7+4)x -28

... = x² -7x +4x -28 . . . . . . order does not matter. It could also be x² +4x -7x -28

c) We can group pairs of terms in the rewritten expression and factor each pair.

... = (x² -7x) +(4x -28) . . . . . first pair has a common factor of x; second pair, 4

... = x(x -7) +4(x -7) . . . . . . . these terms now have a common factor: (x -7)

... = (x +4)(x -7) . . . . . . . . . . the complete factorization of x² -3x -28

3 0
3 years ago
I really need help with this?
Natasha2012 [34]

Answer:

88

Step-by-step explanation:

if im wrong please tell me although i did do the problem

8 0
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