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2 years ago

14

A hubcap has a radius of 16 centimeters. What is the area of the hubcap? Round your answer to the nearest hundredth. Use 3.14 fo

r π.

1 answer:

Shtirlitz [24]2 years ago

7 0

The formula for the area of a circle is pi*r^2. 3.14*16^2 = 803.84 centimeters squared

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Rina8888 [55]

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3 years ago

If f(x) is a function and f(1) = 5, then which of the following could not be true?

Natasha_Volkova [10]

It can't be f(1) = 1 because a function can't have two images on the same x.

8 0

3 years ago

Read 2 more answers

According to a study conducted by the Gallup Organization, the the proportion of Americans who are afraid to fly is 0.10. A rand

notsponge [240]

Answer: 0.1457

Step-by-step explanation:

Let p be the population proportion.

Given: The proportion of Americans who are afraid to fly is 0.10.

i.e. p= 0.10

Sample size : n= 1100

Sample proportion of Americans who are afraid to fly = $\hat{p}=\dfrac{121}{1100}=0.11$

We assume that the population is normally distributed

Now, the probability that the sample proportion is more than 0.11:

$P(\hat{p}>0.11)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.11-0.10}{\sqrt{\dfrac{0.10(0.90)}{1100}}})\\\\=P(z>\dfrac{0.01}{0.0090453})\ \ \ [\because z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}} ]\\\\=P(z>1.1055)\\\\=1-P(z\leq1.055)\\\\=1-0.8543=0.1457\ \ \ [\text{using z-table}]$

Hence, the probability that the sample proportion is more than 0.11 = 0.1457

3 0

3 years ago

HELP PLEASEEEEEEEEEEEE

Vlada [557]

Answer:

Just a tip that you can use apps on the computer called Math-way and Math papa for free (Sorry i wasn't able to answer but I tried my best) Hope This helps!

Step-by-step explanation:

3 0

3 years ago

At some department store, all suits are reduced 30% from the retail price. If a man purchased a suit that originally rera ec for

Arisa [49]

Answer:

$78.72

Step-by-step explanation:

To find 30% of the original value, we need to turn this percentage into a decimal or a fraction and then multiply it by the original value

30% is equivalent to 0.30, $\frac{30}{100}$ , and $\frac{3}{10}$
So we can use either of these values. I will use 0.30 for simplicity

($262.40)(0.30) = $78.72 is the amount saved

5 0

4 years ago