14. Molly had some 20-cent and 50-cent coins. 7
of the coins were 20 cent coins and the rest were 50-cent coins.
8
3
After Molly had spent $78 worth of 50-cent coins and of the 20-cent
7
4
coins, she had of the coins left. Find the number of 50-cent coins Molly
had left.
rat total

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.

The area of each triangle is 7 square units. the surface area of the triangular prism is

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.