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Butoxors [25]
3 years ago
13

The regular price of a CD set is $28.00. The set is on sale for 40% off. What is the amount of the discount?

Mathematics
1 answer:
BabaBlast [244]3 years ago
4 0

Answer:

The discount would be $11.20

Step-by-step explanation:

In order to find the discount amount, start by taking the original cost and multiplying it by the percentage of the discount.

$28.00 * 40%

$28.00 * .40

$11.20

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A quality control engineer is interested in estimating the proportion of defective items coming off a production line. In a samp
fenix001 [56]

Answer:

The lower bound of a 99% C.I for the proportion of defectives = 0.422

Step-by-step explanation:

From the given information:

The point estimate = sample proportion \hat p

\hat p = \dfrac{x}{n}

\hat p = \dfrac{55}{100}

\hat p = 0.55

At Confidence interval of 99%, the level of significance = 1 - 0.99

= 0.01

Z_{\alpha/2} =Z_{0.01/2} \\ \\ = Z_{0.005} = 2.576

Then the margin of error E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1-\hat p)}{n}}

E = 2.576 \times \sqrt{\dfrac{0.55(1-0.55)}{100}}

E = 2.576 \times \sqrt{\dfrac{0.2475}{100}}

E = 2.576 \times0.04975

E = 0.128156

E ≅ 0.128

At 99% C.I for the population proportion p is: \hat p - E

= 0.55 - 0.128

= 0.422

Thus, the lower bound of a 99% C.I for the proportion of defectives = 0.422

6 0
2 years ago
7th grade math help me pleasee
erma4kov [3.2K]

Answer:

Step-by-step explanation:

a. (-6/2)*(1/3)*(36/2)=-18; b. (125/100)*(-2/2)

3 0
3 years ago
Consider the graph of f(x) given below.
tiny-mole [99]

The functions could represent g(x) is B. g(x) = f(x - 5)

<h3>How can the function be determined?</h3>

Using the general equation g(x) =f(x)+ b

The g(x) has intercept of y=-2,

Then the  y-intercept of f(x) is at y=3

If we find the difference between both y-intercepts, we have

( -2 -3) = -5

Then b=-5

Hence, g(x) = f(x - 5) is correct.

Learn more about the  transformation at

brainly.com/question/4289712

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5 0
2 years ago
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saw5 [17]

Answer:

$4.89 + $5.87 + $6.52 = $17.28

Step-by-step explanation:

i dont have nothing im sorry...

6 0
3 years ago
Please answer this correctly
Mnenie [13.5K]

Answer: 30 grams

Step-by-step explanation:

The interquartile range is the range within the boxed areaa. You subtract the minimum value from the maximum value.

150 - 120 = 30

5 0
3 years ago
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