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
aev [14]
3 years ago
15

Which of the following sets could be the sides of a right triangle? {2, 3,square root 10} {3, 5, square root 34} {5, 8, 12}

Mathematics
2 answers:
NemiM [27]3 years ago
5 0

2,3,√10

is the answer

Setler79 [48]3 years ago
3 0

Answer:

Option 2 is correct.

Step-by-step explanation:

For right triangle

The pythagoras theorem should satisfy

The square of longest side should be equal to the sum of square of other two sides

c^2=a^2+b^2

Case1:

We have (2,3,\sqrt{10})

If we substitute in the formula

c=\sqrt{10},a=2,b=3  we get:

10\neq9+2

which does not satisfy the condition.

Case2:

We have  (3,5,\sqrt{34})

If we substitute in the formula

c=\sqrt{34},a=3,b=5  we get:

34=25+9

which satisfies the condition.

Hence, option 2 is correct.


You might be interested in
If a time series plot exhibits a horizontal pattern, then
gogolik [260]

Answer: C. there is still not enough evidence to conclude that the time series is stationary.

Step-by-step explanation: First thing to note for a time series plot is that it is required to select a suitable forecast method for the data set being considered.

A stationary time series means that the process generating the data set has a constant mean and the variations are constant over time. This means all evidence is present leading to the conclusion that the entire time series is stationary. A stationary time series thus exhibits an horizontal pattern which enables an appropriate forecast method to be selected for this type of pattern.

A horizontal pattern of a time series plot indicates that a data set fluctuates around a constant mean for a period of time. This period of time may however not be the entire time of the time series or take the entire data set into consideration and might just be a reflection of a portion of the time series hence why it can not be explicitly considered to be stationary. This means that a horizontal pattern can change into a seasonal or trending pattern if more variables/data are added over time.

For instance, a manufacturer sells a certain amount of products over a 10 week period and the resulting pattern of a time series plot is horizontal, then from the 11th week to the 15th week he gets a sharp and continuous increase in sales. This change in level will therefore change the time series plot from horizontal to trending making it more difficult to select a suitable forecast method.

6 0
3 years ago
In a study of parents' perceptions of their children's size, researchers asked parents to estimate their youngest child's height
tatyana61 [14]

Answer:

Test statistic t=6.505

P-value=0

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that parents tend to underestimate their youngest child's size.

Then, the null and alternative hypothesis are:

H_0: \mu=0\\\\H_a:\mu> 0

The significance level is assumed to be 0.05.

The sample has a size n=39.

The sample mean is M=7.5.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=7.2.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{7.2}{\sqrt{39}}=1.153

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{7.5-0}{1.153}=\dfrac{7.5}{1.153}=6.505

The degrees of freedom for this sample size are:

df=n-1=39-1=38

This test is a right-tailed test, with 38 degrees of freedom and t=6.505, so the P-value for this test is calculated as (using a t-table):

P-value=P(t>6.505)=0

As the P-value (0) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is  enough evidence to support the claim that parents tend to underestimate their youngest child's size.

5 0
3 years ago
Start solving #2 with the substitution method
Brums [2.3K]

Answer:

A=3, B =3, C = 3

Step-by-step explanation:

9/3 (the letters) = 3 Each

3 - 24 - 3 = -27

2a = 6

6 - 3 + 3 = 6

A, b, c, all equal 3.

7 0
3 years ago
a cell phone plan offers 250 minutes each month for 15.00 dollars per month. what is the cost per minute when a person uses all
Nezavi [6.7K]
It costs 0.06 cents each minute.

Explanation : $15/250 minutes = $0.06
4 0
3 years ago
Need help with this khan academy question. Plus minus square root of negative nine equals plus or minus
klemol [59]

Answer:

3i

Step-by-step explanation:

3i x 3i = -9

-3i x -3i = -9

Therefore the square root of -9 is 3i or -3i

3 0
3 years ago
Other questions:
  • Which equation has roots of 3plus or minus sqare rt 2?
    6·1 answer
  • All my points and BRAINLIEST!!!!<br><br> Please help
    5·2 answers
  • What is the value of x? Teach me
    5·1 answer
  • On a deposit of $10,000 that earns 4% compound interest (compounded annually), how much will you have after 8 years?
    9·1 answer
  • What is the value of x?
    7·1 answer
  • Which of the following is ordered from least to greatest?
    12·2 answers
  • The linear equatic
    11·1 answer
  • Factor out -32y^2 - 24y
    7·1 answer
  • Hannah and Corrine are playing a game by rolling two cubes, each numbered 1 through 6. If the sum of the numbers on the cubes is
    9·1 answer
  • The coordinates of the vertices of AHKM are H(3, -2),
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!