All categories

3 years ago

The sum of the three EXTERIOR angle measures of a triangle is _________

Mathematics

2 answers:

stepan [7]3 years ago

8 0

The answer is B. 180

Liula [17]3 years ago

3 0

Answer:

180

Step-by-step explanation:

You might be interested in

Mr.Blankenship has 3/8 pound of candy to give to the top 3 finalists in the spelling bee if each finalist receives an equal amou

Triss [41]

Answer:

3/8

Step-by-step explanation:

3/8+8/9

6 0

3 years ago

A clerk is marking up merchandise 34%. The original price of an item is $455. What will be the retail price?

Galina-37 [17]

Take the orginal price and multiply it by 1.34.
455 * 1.34 = $609.70 in retail.

The longer way would be to take 34% of 455 and then add it to 455.

4 0

4 years ago

Simplify. Express your answer using positive exponents.<br> 1056<br> 1054

Whitepunk [10]

Answer:

what do you mean? please state the question and i will help

Step-by-step explanation:

7 0

3 years ago

For line graphs and bar graphs, the values measured by the vertical axis

mestny [16]

Answer:

Horizontal

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Suppose that scores on the mathematics part of a test for eighth-grade students follow a Normal distribution with standard devia

riadik2000 [5.3K]

Answer:

We need an SRS of scores of at least 153.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How large an SRS of scores must you choose?

This is at least n, in which n is found when $M = 20, \sigma = 150$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$20 = 1.645*\frac{150}{\sqrt{n}}$

$20\sqrt{n} = 1.645*150$

$\sqrt{n} = \frac{1.645*150}{20}$

$\sqrt{n} = 12.3375$

$(\sqrt{n})^{2} = (12.3375)^{2}$

$n = 152.2$

Rounding to the next whole number, 153

We need an SRS of scores of at least 153.

8 0

3 years ago