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
adelina 88 [10]
3 years ago
7

If the shortest leg for two right triangles is two-thirds the size of the of the shared hypotenuse then what is the length of th

e shortest leg?
Mathematics
2 answers:
Alisiya [41]3 years ago
6 0
That is a hard question 
Tanzania [10]3 years ago
5 0
The shortest leg=2*hypotenuse/3

hypotenuse^2=4*hypotenuse^2/9 + 5hypotenuse^2/9

the longest leg is V5/3* hypotenuse
You might be interested in
A study was conducted to investigate the effectiveness of hypnotism in reducing pain. An SRS of 8 subjects was randomly selected
chubhunter [2.5K]

Answer:

e. No, the p-value is greater than 0.01, so there is insufficient evidence at the 0.01 level to conclude that pain levels are lower after hypnotism.

Step-by-step explanation:

Hello!

The study's objective is to test if hypnotism reduces pain.

A sample of n=8 subjects was taken and the pain level was recorded in each subject before and after being hypnotized.

The variable of interest was determined by calculating the difference of pain level after - before hypnosis. This is a paired sample test and the variable can be determined as:

Xd: Difference between pain level felt after hypnosis and pain level felt before hypnosis of a subject.

The sample average and standard deviation obtained were:

Xd= -3

Sd= 3

And the variable is presumed to be approximately normal.

An approximately normal distribution is enough to conduct a paired sample t-test.

If the claim is that hypnosis reduces pain, then the average pain level after hypnosis should be less than the average pain level before hypnosis, then the average difference is expected to be negative, symbolically: μd < 0

The test will be one-tailed and so will be the p-value.

Remember: The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).

So first step is to calculate the value of the statistic under the null hypothesis and then you can calculate the p-value.

H₀: μd ≥ 0

H₁: μd < 0

t_{H_0}= \frac{X_d-Mu_{d}}{\frac{S_d}{n} }= \frac{-0-0}{\frac{3}{\sqrt{8} } } = -2.828= -2.83

The DF of the t-test are n-1= 7

Then you can calculate the p-value as:

P(t₇≤-2.83)= 0.0127

The level of the test is α: 0.01

The decision rule is:

If p-value ≤ α, reject the null hypothesis.

If p-value > α, do not reject the null hypothesis.

The p-value > α the decision is to not reject the null hypothesis.

Correct option: e. No, the p-value is greater than 0.01, so there is insufficient evidence at the 0.01 level to conclude that pain levels are lower after hypnotism.

I hope this helps!

5 0
3 years ago
Decimals from least to greatest please help put in order. 2.2, 2.15, 2.2012, 2.501
Ivan

Answer: 2.15, 2.2, 2.2012, 2.501

4 0
3 years ago
Read 2 more answers
PLSSS HELPPPPPP PLSSSS
Lana71 [14]

Answer:

Morgan, its a straight line and it goes through the origin

Step-by-step explanation:

5 0
3 years ago
Do these ordered pairs represent a function?<br> (0, 1), (0, 2), (2,3), (4,8)
Aleksandr-060686 [28]

Answer:

No

Step-by-step explanation:

To be a function, each input can only go to one output

0 goes to 1 and 2 so it cannot be a functions

8 0
3 years ago
What is the answer to this question 8 1/2- 7 1/4
zysi [14]
1 1/4 because you must make improper fractions
4 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone please help me it is due tomorrow
    6·1 answer
  • Is 1/2 x 3/5 larger or smaller than 1/2? Why?
    7·1 answer
  • What is the sum of 5 1/6 + (7 1/3)
    9·2 answers
  • Simplify i^ 31 1 −1 i -i
    9·1 answer
  • A study of consumer smoking habits includes A people in the 18-22 age bracket (B of whom smoke), C people in the 23-30 age brack
    14·1 answer
  • Please please pleeeease I will mark brainliest if I get it right! Arrange the persuasive essay components in the correct sequenc
    7·2 answers
  • If a student answer 67 exam questions correctly out of 100,what fraction and what personage of question did the students answers
    7·2 answers
  • Hunter earns $16 per hour tutoring students after school, If Hunter tutored for 12 hours
    11·2 answers
  • HELLPPPP MEEEEEEEE
    6·1 answer
  • PLEASE ANSWER ASAP: Dianna can carry up to 15lbs in her backpack. Her lunch weighs 1 lb, her gym shoes weigh 2 lbs, and her book
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!