Answer:
x=17
Step-by-step explanation:
well the triangles are congruent so that equation has to equal 61, so set it equal to 61, once you do that subtract 10 with 61 giving you 51, then divide 3 with 51 and you get 17

Answer: 5/7 squared
Step-by-step explanation:
To change 7/5 to 1, multiply by 5/7.
To change (7/5)^2 to 1, multiply by (5/7)^2.
Answer:
The friend has the greater range.
Step-by-step explanation:
+5 minus -4 = 9
Answer: Two-sample t-test
Step-by-step explanation:
The Two-sample t-test is used to test the difference between two random and distinct population means. It help test whether the difference between the two populations is statistically significant.
In the case above the researcher wants to determine whether there is a difference in mean number of minutes of television viewing between men and women which makes it a Two-sample t-test.
Answer: The required probability is 
Step-by-step explanation: Given that an urn contains 6 red marbles and 4 black marbles. Two marbles are randomly drawn one by one from the urn without replacement.
We are to find the probability that both drawn marbles are black.
Let E and F denote the events of two marbles one by one without replacement and let S and S' denote the corresponding sample spaces.
Then, we have

Therefore, the probability that both marbles are red is given by

Thus, the required probability is 