MATHEMATICS COLLEGE

Which number(s) below belong to the solution set of the inequality? Check all that apply. 9x 117A.
12

B.
14

C.
19

D.
13

E.
6

F.
8

Answers

Answer 1
Answer: Question says inequality, but there was no symbol between 9x and 117.

If it were an equation, then it reads 9x=117, in which case the answer is
x=117/9=13.

If it were 9x>=117, then all choices 13 or greater qualify.

If it were 9x<=117, then all choices 13 or less qualify.

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A company manufacturing computer chips finds that 8% of all chips manufactured are defective. In an effort to decrease the percentage of defective chips, management decides to provide additional training to those employees hired within the last year. After training was implemented, a sample of 450 chips revealed only 27 defects. A hypothesis test is performed to determine if the additional training was effective in lowering the defect rate. Which of the following statement is true about this hypothesis test?a) The additional training significantly increased the defect rate.b) The additional training significantly lowered the defect rate.c) The additional training did affect the defect rate.d) The additional training did not significantly lower the defect rate.e) None of these.

Answers

Answer:

d) The additional training did not significantly lower the defect rate

Step-by-step explanation:

Let proportion of defective chips be = x

Null Hypothesis [H0] : Additional training has no impact on defect rate             x = 8% = 0.08

Alternate Hypothesis [H1] : Additional training has impact on defect rate          x < 8% , x < 0.08  

Observed x proportion (mean) : x' = 27 / 450 = 0.06

z statistic = [ x' - x ]  / √ [ { x ( 1-x ) } / n ]

( 0.06 - 0.08 ) /  √ [ 0.08 (0.92) / 450 ]

= -0.02 / √ 0.0001635  

= -0.02  / 0.01278

z = - 1.56

Since calculated value of z, 1.56 < tabulated value of z at assumed 0.01 significance level, 2.33

Null Hypothesis is accepted, 'training didn't have defect rate reduction impact' is concluded

Use the distributive property to remove the parentheses.2x+(6x2-9)
Simplify your answer as much as possible.

Answers

After removing the parentheses using the distributiveproperty, the expression2x^4 (6x^2 - 9) simplifies to 12x^6 - 18x^4.

We have,

To remove the parentheses using the distributiveproperty, we need to multiply each term inside the parentheses by the term outside the parentheses.

Applying the distributiveproperty to the expression2x^4 (6x^2 - 9), we have:

2x^4 * 6x^2 - 2x^4 * 9

Multiplying the terms:

12x^6 - 18x^4

Therefore,

After removing the parentheses using the distributiveproperty, the expression 2x^4 (6x^2 - 9) simplifies to 12x^6 - 18x^4.

Learn more about expressions here:

brainly.com/question/3118662

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Answer: 12x^6 - 18x^4

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Answers

Answer:

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Step-by-step explanation:

.

Answer:

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Step-by-step explanation:

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Answers

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Answers

Answer:

−30+(−40)+(−70) = -140

Step-by-step explanation:

−30+(−40)+(−70) = -140

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:
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