1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sav [38]
3 years ago
9

d) The front of the stage, side C, is 50 feet long. A 40-foot rope runs along the side of square B. A 30-foot rope runs along th

e side of square A. Is the roped off area, triangle ABC, a right triangle? Explain. (2 points)
Mathematics
1 answer:
34kurt3 years ago
4 0
Yes, this is a right triangle!

The ratio is identifiable as a 3:4:5 triangle, one of the ratios to tell if a triangle is a right triangle
You might be interested in
I need help plz help
arsen [322]

Answer:

126

Step-by-step explanation:

To solve this, we need to use PEMDAS: Parentheses, exponents, multiplication, division, addition, subtraction

((4 x 8) + 10) x 3

Parentheses - multiplication

(32 + 10) x 3

Parentheses - addition

42 x 3

multiplication

126

3 0
3 years ago
Select the values of r, below, that represent a low or no correlation. (There is more than one answer!)
Anon25 [30]
Ok I have the answers! Anything, whether positive or negative, with the value above .5 has a high correlation. Therefor the answers would be
B-low correlation
C-no correlation
D-low correlation
G- no correlation


I know that's too late for you but hope it helps with any other students struggling!
5 0
3 years ago
I need help is it A B C or D hopefully the pic uploaded
larisa86 [58]
I think the awswer should d
3 0
3 years ago
Read 2 more answers
Explore the area of sectors of circles by following these steps.
Nezavi [6.7K]

Answer: 9pi

Step-by-step explanation:

8 0
3 years ago
A 2003 study of dreaming found that out of a random sample of 106 ​people, 80 reported dreaming in color.​ However, the rate of
Vlad [161]

Answer:

Step-by-step explanation:

Hello!

You have the following experiment, a random sample of 106 people was made and they were asked if they dreamed in color. 80 persons of the sample reported dreaming in color.

The historical data from the 1940s informs that the population proportion of people that dreams in color is 0.21(usually when historical data is given unless said otherwise, is considered population information)

Your study variable is a discrete variable, you can define as:

X: Amount of people that reported dreaming in colors in a sample of 106.

Binomial criteria:

1. The number of observation of the trial is fixed (In this case n = 106)

2. Each observation in the trial is independent, this means that none of the trials will have an effect on the probability of the next trial (In this case, the fact that one person dreams in color doesn't affect or modify the probability of the next one dreaming in color)

3. The probability of success in the same from one trial to another (Or success is dreaming in color and the probability is 0.21)

So X~Bi(n;ρ)

In order to be able to run a proportion Z-test you have to apply the Central Limit Theorem to approximate the distribution of the sample proportion to normal:

^ρ ≈ N(ρ; (ρ(1-ρ))/n)

With this approximation, you can use the Z-test to run the hypothesis.

Now what the investigators want to know is if the proportion of people that dreams in color has change since the 1940s, so the hypothesis is:

H₀: ρ = 0.21

H₁: ρ ≠ 0.21

α: 0.10

The test is two-tailed,

Left critical value: Z_{\alpha/2} = Z_{0.95} = -1.64

Right critical value: Z_{1-\alpha /2} = Z_{0.95} = 1.64

If the calculated Z-value ≤ -1.64 or ≥ 1.64, the decision is to reject the null hypothesis.

If -1.64 < Z-value < 1.64, then you do not reject the null hypothesis.

The sample proportion is ^ρ= x/n = 80/106 = 0.75

Z= <u>     0.75 - 0.21    </u> = 12.83

    √[(0.75*0.25)/106]

⇒Decision: Reject the null hypothesis.

p-value < 0.00001 is less than 0.10

If you were to conduct a one-tailed upper test (H₀: ρ = 0.21 vs H₁: ρ > 0.21) with the information of this sample, at the same level 10%, the critical value would be Z_{0.90}1.28 against the 12.83 from the Z-value, the decision would be to reject the null hypothesis (meaning that the proportion of people that dreams in colors has increased.)

I hope this helps!

4 0
3 years ago
Other questions:
  • Square that I=79 mm and w=58 what's the area and perimeter of the square ?
    15·1 answer
  • 35/100 WRITE AS a decimal
    11·2 answers
  • PLEASE HELP FOR BRAINLIEST!!
    8·1 answer
  • Tuli is 10 years younger than Emily. The product of their
    10·1 answer
  • At a clothing store sale, a shirt costs
    8·1 answer
  • Kelly works in a grocery store stocking shelves. The graph below shows the money Kelly earns stocking shelves.
    8·1 answer
  • Which expression is equal to 1/6? ​
    5·2 answers
  • Live image and video. tell me is you can see the image or not.
    10·1 answer
  • How do you solve this? I'm stuck
    10·1 answer
  • Please help me with this it's algebra WILL GIVE BRAINLIEST and 5 points
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!