Ask question

Ask question

All categories

3 years ago

9

An online music club sells compact discs for $13.95 each plus $1.95 shopping and handling per order. If Maria’s total bill was $

85.65, how many compact discs did Maria purchase?

1 answer:

Korvikt [17]3 years ago

3 0

$85.65 = 13.95x + 1.95$
$83.7 = 13.95x$
$6 = x$
6 CDs

You might be interested in

It is thought that not as many Americans buy presents to celebrate Valentine's Day anymore. A random sample of 40 Americans yiel

evablogger [386]

Answer:

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

(0.3672 , 0.7328)

Step-by-step explanation:

<u><em>Explanation:</em></u>-

Given Random sample size n =40

Sample proportion

$p = \frac{x}{n} = \frac{22}{40} = 0.55$

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

$(p-Z_{\alpha } \sqrt{\frac{pq}{n} } , p + Z_{\alpha } \sqrt{\frac{pq}{n} } )$

The Z-value Z₀.₉₈ = Z₀.₀₂ = 2.326

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

$(0.55-2.326\sqrt{\frac{0.55 X0.45}{40} } , 0.55 + 2.326\sqrt{\frac{0.55 X0.45}{40} } )$

( 0.55 - 0.1828 , 0.55 + 0.1828)

(0.3672 , 0.7328)

6 0

3 years ago

Read 2 more answers

(6×1,000)+(1×100)+(2×10)+(9× 10 1 )+(4× 100 1 )=?

stiv31 [10]

Answer:

11033

Step-by-step explanation:

3 0

2 years ago

List all of the correct numbers rounded to 56.8 when rounded to the nearest tenth don’t forget to put all of the answer

jek_recluse [69]

56.809

56.795

56.832

These all round up to 56.8

8 0

2 years ago

Why did the 30-60-90 triangle marry the 45-45-90 triangle

Tatiana [17]

Answer: because they were right for each other.

Step-by-step explanation:

8 0

3 years ago

PLSS I NEED HELPPP .

Sidana [21]

Answer:

yes

Step-by-step explanation:

...........................

5 0

2 years ago