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3 years ago

15

Andy got a 32%discound on all his purchases at his favorite shop. If he saved 64$ on the total bill, the bill amount with out th

e discount was?

1 answer:

seraphim [82]3 years ago

3 0

Answer:

The amount without discount is $200.

Step-by-step explanation:

If you multiply 200 by 0.32 (% off), you get 64. Hope it helps!

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How do you completely factor:<br><br> 2x^3 – 5x^2 – 22x + 55

DochEvi [55]

Answer:(X^2-11)(2X-5)

Step-by-step explanation:

2x^3-5x^2-22x+55

x^2(2x-5)-11(2x-5)

(X^2-11)(2X-5)

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3 years ago

The product of 3 and the square of a number increased by that number

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Answer: 3?

Step-by-step explanation:

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4 years ago

Augustin has 20 different chess boards. If he played 3 games per day, each game played on a different board, how long would it t

Nutka1998 [239]

Answer:

514 days

Step-by-step explanation:

We use the formula (r+n-1)/r(n-1)

There are 1540 combinations. Then, we'll divide them by three because were not just finding the amount of combinations, but the time it'd take to play them all.

We get 513.333(cont.)

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Hope this is helpful!

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3 years ago

Using partial quotients 5,166 divide by 42

Y_Kistochka [10]

Answer: 123

Step-by-step explanation:

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3 years ago

Read 2 more answers

Use the standard normal distribution or the t-distribution to construct a 99% confidence interval for the population mean. Jus

vichka [17]

Answer:

(25.732,30.868)

Step-by-step explanation:

Given that in a random sample of 42 people, the mean body mass index (BMI) was 28.3 and the standard deviation was 6.09.

Since only sample std deviation is known we can use only t distribution

Std error = $\frac{s}{\sqrt{n} } =\frac{6.09}{\sqrt{42} } \\=0.9397$

$df = 42-1 =41$

t critical for 99% two tailed $= 2.733$

Margin of error $= 2.733*0.9397=2.568$

Confidence interval lower bound = $28.3-2.568=25.732$

Upper bound = $28.3+2.568=30.868$

3 0

3 years ago