All categories

4 years ago

What is the measure of arc AC? A) 33 B) 38 C) 28 D) 45

Mathematics

1 answer:

puteri [66]4 years ago

4 0

Answer:

Step-by-step explanation:

7x-4 is two times 2.5x+4

You might be interested in

-37 4/5 divided by 4/5

AlladinOne [14]

Answer:

Step-by-step explanation:

-47.25

5 0

3 years ago

Read 2 more answers

A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:

marin [14]

Answer:

$Range = 85$

$\sigma = 28.71$

$Interval = [666.78, 781.62]$

Step-by-step explanation:

Given

The data for 25 undergraduates

Solving (a): Range and Standard deviation

The range is:

$Range = Highest - Least$

From the dataset:

$Highest = 772$

$Least = 687$

So:

$Range = Highest - Least$

$Range = 772-687$

$Range = 85$

The standard deviation is:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}$

First, calculate the mean

$\bar x = \frac{769 +691 +............+715}{25}$

$\bar x = \frac{18105}{25}$

$\bar x = 724.2$

So, the standard deviation is:

$\sigma = \sqrt{\frac{(769-724.2)^2 +(691-724.2)^2 +(699-724.2)^2 +(730-724.2)^2 +............+(715-724.2)^2}{25}}$

$\sigma = \sqrt{\frac{20604}{25}}$

$\sigma = \sqrt{824.16}$

$\sigma = 28.71$

Solving (b): The interval of the 95% of the observation.

Using the emperical rule, we have:

$Interval = [\bar x - 2*\sigma, \bar x+ 2*\sigma]$

$Interval = [724.2 - 2*28.71, 724.2 + 2*28.71]$

$Interval = [666.78, 781.62]$

4 0

3 years ago

You are solving a system of two linear equations in two variables, and you discover that there is exactly one solution to the sy

Oduvanchick [21]

Answer:

pink

Step-by-step explanation:

zludzlzl7zos9rsofsorsorsirsira9ea9aors

4 0

3 years ago

Read 2 more answers

What tools did the Greeks use is the geometric constructions

Mamont248 [21]

Answer:

Well, just being simple, 2 would be the compass or the straightedge.

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Earning an A in algebra this semester is an example of

Rufina [12.5K]

Data with a mean that is over 94% (or 90 depending on the grading scale).
each grade you get is a point of data that when added together and getting the mean is over the threshold of "A"

3 0

3 years ago

Read 2 more answers