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ASHA 777 [7]
3 years ago
13

Construct and interpret a 95% confidence interval estimate for the difference in the mean number of cell phone calls per month f

or 18-24-year-olds and 45-54-year-olds.
Mathematics
1 answer:
dsp733 years ago
5 0

Answer:

25 per month

Step-by-step explanation:

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Help me I did not get this part so can you<br> All help me
klemol [59]
D. 10 because if you replace x with 10, subtract it with 1 it equals 9. Then 9 divided by 3 equals three so k=3 which is correct
7 0
3 years ago
This meal originally costs $75. Fatima used a 20% off coupon and then tax was added. The total after coupon and tax was $75.
Savatey [412]

The discount given on the cost of the meal is $15

<h3>How to calculate tax on a given price</h3>

According to the question, we are given the following information

The original cost of the meal = $75

Off coupon = 20%

Required

The number of coupons given

coupon amount = 0.2 * 75
coupon amount = $15

Hence the discount given on the cost of the meal is $15

Learn more on discounts here: brainly.com/question/24304697

5 0
2 years ago
What is the volume of the figure???
lianna [129]

Answer:

1530cm

Step-by-step explanation:

First figure      (9x10)x9=810

Second figure (18x10)x4=720

720+810=1530

6 0
2 years ago
en el año 5 antes de Cristo, un chico cumplió 13 años.¿en qué año nació?, ¿en qué año nació su madre si lo tuvo con 22 años?
ki77a [65]

Answer:

El chico nació en el año 18 antes de cristo.

La madre nació en el año 40.

Step-by-step explanation:

Las respuestas son fáciles:

- Si en el año 5, el hijo tiene 13 años, hagamos que a partir del año 0 después de cristo sea positivo.

-13-(-5) = -18

- Madre:

-18-22 = -40

Entonces, su edad debería ser negativa, simplemente cambiamos el símbolo y lo pasamos a positivo.

7 0
3 years ago
3(2x) + 3(-1) = -21 <br><br>6x - 3 = -21<br> What property is being used ?
kaheart [24]
Distributive property, since 3(2x) you distribute and get 6x
4 0
3 years ago
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