What the value 0 in degrees

Use the coordinate plane to help you identify the length of each leg then use the Pythagorean Theorem to find the length of CD

mihalych1998 [28]

Answer:

the answe is 10.30

Step-by-step explanation:

im also from k12 lol

5 0

3 years ago

Boys Relay Race

Rzqust [24]

A. 1
b. 1
c. 1
d. 1/2

2. 1/2
3. Yes they did break it because there are 3 wholes.

6 0

3 years ago

In a group of 27 pupils, 7 play the flute only.

expeople1 [14]

Answer:

5/27

Step-by-step explanation:

I wrote it as a fraction, but the explanation is, if you're finding out how many who don't play instruments, you first need to find out who many do play instruments, so you add the numbers together.

10+5+7 = 22

So the probability that you'll pick one who does play an instrument would be 22/27 (because 22 out of the 27 pupils play an instrument.) But remember that's not what it's asking us for.

You have to subtract 27 - 22 to get the pupils who don't play instruments, you get 5, so the probability is 5/27 (5 pupils out of 27 don't play instruments.)

To put this in a percent, just divide the top number by the bottom number and move the decimal 2 places over, you get 18.5% or 19% both answers are correct depending on rounding.

4 0

3 years ago

You can

nika2105 [10]

Answer: a

Step-by-step explanation:

8 0

2 years ago

A test-preparation company advertises that its training program raises SAT scores by an average of at least 30 points. A random

aniked [119]

Answer:

(a) Null Hypothesis, $H_0$ : $\mu \geq$ 30 points

Alternate Hypothesis, $H_A$ : $\mu$ < 30 points

(b) Type I error is that we conclude that test-takers who had completed the training showed a mean increase smaller than 30 points but in actual, the program raises SAT scores by an average of at least 30 points.

Step-by-step explanation:

We are given that a test-preparation company advertises that its training program raises SAT scores by an average of at least 30 points.

A random sample of test-takers who had completed the training showed a mean increase smaller than 30 points.

Let $\mu$ = <u><em>average SAT score.</em></u>

(a) So, Null Hypothesis, $H_0$ : $\mu \geq$ 30 points

Alternate Hypothesis, $H_A$ : $\mu$ < 30 points

Here, the null hypothesis states that the training program raises SAT scores by an average of at least 30 points.

On the other hand, the alternate hypothesis states that test-takers who had completed the training showed a mean increase smaller than 30 points.

(b) Type I error states the probability of rejecting the null hypothesis given the fact that null hypothesis is true.

According to the question, the Type I error is that we conclude that test-takers who had completed the training showed a mean increase smaller than 30 points but in actual, the program raises SAT scores by an average of at least 30 points.

The consequence of a Type I error is that we conclude the test-takers have low SAT scores but in actual they have an SAT score of at least 30 points.

7 0

3 years ago