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svet-max [94.6K]
2 years ago
7

What is the area of a circle with diameter 15 cm? Round your answer to the nearest tenth.

Mathematics
1 answer:
Len [333]2 years ago
6 0

Answer:

176.8

Step-by-step explanation: first you have to find the radius by finding the half of 15 which is calculated to be 7.5

and the formula to find the area is A=\pi 7.5^{2} \\

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IF ANSWERED CORRECTLY WILL GIVE BRAINLIEST BUT IF YOU GIVE ME PDFS OR LINKS I WILL REPORT YOU
Alchen [17]

Answer:

Defending the inference and challenge

Step-by-step explanation:

The inference is correct no one chosen math. Most of them choose english, few of them choose history, and only two choose science.

There are 1000 7th grader, since they did not ask them what was their favorite subject. They could of had 65% for math, 25% for english, 5% for science and history. We do not know.

Hopes this help

4 0
3 years ago
What is the range of the following function: f(x)=-x^2+x^-1 if the domain is {-2, -1, 1}
postnew [5]

f(x)= -x^2 + x^-1

f(-2)= - (-2)^2 + (-2)^-1 = -4 - 1/2 = -9/2

f(-1)= - (-1)^2 + (-1)^-1 = -1 -1    =   -2

f(1) = - (1)^2 + (1)^-1 = -1 +1 = 0

The range is { -9/2, -2, 0}


8 0
3 years ago
One inch is equivalent to 2.54 centimeters. How many inches are in 50.8 centimeters
Genrish500 [490]
The answer is 20 ^-^.... i think
7 0
3 years ago
Read 2 more answers
PLEASE HELP!!! WILL GIVE BRAINLIEST IF YOURE RIGHT!!!!
Svetllana [295]
D. is the answer

y - y1 = m(x - x1)
the slope is 2/3, so choose which point to be (x1, y1)
5 0
3 years ago
The heights of a random sample of 100 women are recorded. The sample mean is 65.3 inches and the sample standard deviation is 3
Keith_Richards [23]

Answer: B. 65.3\pm(2)(0.3)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 100

Sample mean : \overline{x}=65.3\text{ inches}

Standard deviation: \sigma=3 \text{ inches}

Level of confidence = 0.95

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.96

Then, 95% confidence interval for the population mean will be :-

65.3\pm (1.96)\dfrac{3}{\sqrt{100}}\\\\\approx65.3\pm(2)(\dfrac{3}{10})=65.3\pm(2)(0.3)

8 0
3 years ago
Read 2 more answers
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