After a dilation with a center of (0, 0), a point was mapped as (2, –5) → (3, y). A student determined y to be –2.5. Evaluate the student's answer. A.
The student is correct.
B.
The student incorrectly calculated the scale factor as 0.5.
C.
The student incorrectly divided by the scale factor instead of multiplying by it.
D.
The student incorrectly added the scale factor instead of multiplying by it.

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

The null and alternate hypotheses are: h0: μ1 ≤ μ2 h1: μ1 > μ2 a random sample of 22 items from the first population showed a mean of 113 and a standard deviation of 12. a sample of 16 items for the second population showed a mean of 99 and a standard deviation of 6. use the 0.01 significant level. find the degrees of freedom for unequal variance test. (round down your answer to the nearest whole number.) state the decision rule for 0.010 significance level. (round your answer to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? use the 0.01 significance level.