All categories

2 years ago

A. Wall paper border costs $12.89 for a 15 feet roll. How many rolls do you need to purchase?

Mathematics

1 answer:

Musya8 [376]2 years ago

3 0

Answer: A:3 B: 38.67

Step-by-step explanation: See the other question I posted on as it is the same numbers and has in depth steps.

You might be interested in

Complete the problem

nika2105 [10]

Answer:

The answer is C..........

4 0

2 years ago

A=1/2h(B+b);A=81,B=8,b=1 what is h

Semenov [28]

Answer:

81=1/2h×9,

81=1/18h

1458h=1

h=1/1458

7 0

2 years ago

Read 2 more answers

I will mark you as Brainliest.

beks73 [17]

Answer:

We can't solve this because we can't add graphs. One way you could solve it would using Desmos.

Step-by-step explanation:

8 0

3 years ago

Order these numbers from least to greatest.<br><br> 8.88, 8.8, 7.3962, 8.808

Wewaii [24]

7.3962, 8.8, 8.808, 8.88

8 0

2 years ago

Read 2 more answers

Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is 13.4 years with a s

Aliun [14]

Answer : 0.0129

Step-by-step explanation:

Given : Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is $\mu=13.4$ years and standard deviation is $\sigma=1.7$ years.

Sample size : $n=40$

Let X be the random variable that represents the age of fleets.

We assume that the ages of the fleets of the 10 largest U.S. commercial passenger carriers are normally distributed.

For z-score,

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x=14

$z=\dfrac{14-13.4}{\dfrac{1.7}{\sqrt{40}}}\approx2.23$

By using the standard normal distribution table , the probability that the average age of these 40 airplanes is at least 14 years old will be :-

$P(x\geq 14)=P(z\geq2.23)\\\\=1-P(z$

Hence, the required probability = 0.0129

6 0

3 years ago