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
Alexxandr [17]
2 years ago
7

Which is a true statement about the hypotenuse of a right triangle?

Mathematics
1 answer:
Lynna [10]2 years ago
7 0
Correct answer is D. 

You might be interested in
A psychologist would like to examine the effect of fatigue on mental alertness. An attention test is prepared which requires sub
lianna [129]

Answer:

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

Step-by-step explanation:

We formulate null and alternate hypotheses are

H0 : u1 < u2 against Ha: u1 ≥ u 2

Where u1 is the group tested after they were awake for 24 hours.

The Significance level alpha is chosen to be ∝ = 0.05

The critical region t ≥ t (0.05, 13) = 1.77

Degrees of freedom is calculated df = υ= n1+n2- 2= 5+10-2= 13

Here the difference between the sample means is x`1- x`2= 35-24= 11

The pooled estimate for the common variance σ² is

Sp² = 1/n1+n2 -2 [ ∑ (x1i - x1`)² + ∑ (x2j - x`2)²]

= 1/13 [ 120²+360²]

Sp = 105.25

The test statistic is

t = (x`1- x` ) /. Sp √1/n1 + 1/n2

t=   11/ 105.25 √1/5+ 1/10

t=  11/57.65

t= 0.1908

The calculated value of t= 0.1908 does not lie in the critical region t= 1.77 Therefore we accept our null hypothesis that  fatigue does not significantly increase errors on an attention task at 0.05 significance level

5 0
3 years ago
Nani needs to buy 8 cups of fresh pineapple for a fruit cocktail. the table shows the unit prices of pineapple at different stor
snow_lady [41]

Nani could purchase her pineapple from stores A, D, and E.

Given Information

It is given that Nani needs to purchase  8 cups of pineapple.

The unit prices of pineapple at each store is as follows,

Store A : 0.49

Store B : 0.51

Store C : 0.55

Store D : 0.48

Store E : 0.45

Amount that Nani has = $4

Reason Behind Purchasing From Either A, D, or E

Since Nani has amount of $4, she can purchase pineapple only from the stores where the total cost of 8 pineapple cups adds up to less than $4. The purchase of 8 pineapple cups at each store would be given as,

Store A : 0.49(8) = $3.92

Store B : 0.51(8) = $4.08

Store C : 0.55(8) = $4.40

Store D : 0.48(8) = $3.84

Store E : 0.45(8) = $3.60

As it can be seen, Nani can purchase from the store A, D, and E as it falls within her budget of $4.

Learn more on purchase here:

brainly.com/question/24112214

#SPJ4

5 0
1 year ago
Whats the answer to this middle school math problem
Andreas93 [3]

Answer:

k < 50$

Step-by-step explanation:

She wants the keyboard for less than 50$, so the price, k, is less than 50 in this inequality.

5 0
2 years ago
Read 2 more answers
What is the answer A B C or D
Vanyuwa [196]

To solve this question, use the Cube surface area formula

Area = 6a^2 in which a = edge.

edge = 8.5

Area = 6(8.5)²

Simplify. Follow PEMDAS

Area = 6(72.25)

Area = 433.5

(C) 433.5 in² is your answer

hope this helps

3 0
3 years ago
Read 2 more answers
Full question and options​
LekaFEV [45]

Answer:

D

Step-by-step explanation:

A triangle is always determined by the names of its angles. If, for any reason, you wanted to label it by its side names(which I don't even think you can do but assuming you wanted to), you dont even have the names for all three sides here. So, it can only be d. A, X, and T are the three angle names for this triangle, so this is triangle ATX or AXT.

8 0
2 years ago
Read 2 more answers
Other questions:
  • Jack and Jillian sell apples at a produce stand. Jillian earns $2 for each bag of apples she sells. At the end of the week, Jack
    15·2 answers
  • Can someone please answer this equation?
    9·1 answer
  • in the united states, 73% of people wear a seat belt while driving. if two people are chosen at random, what is the probability
    9·2 answers
  • What is the weight of a 19 kg box on earth ?
    14·1 answer
  • <img src="https://tex.z-dn.net/?f=7xy%28x%20-%207%29%20%3D%20%20" id="TexFormula1" title="7xy(x - 7) = " alt="7xy(x - 7) = " a
    11·1 answer
  • How do you this problem?
    11·1 answer
  • Put these numbers in order from least to greatest.
    10·1 answer
  • What is the equation of the line?
    11·1 answer
  • I need help with geometry i suck at it very bad
    11·2 answers
  • What is the domain of y = 48x - 16x2
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!