What is the measure of the base in the triangle below? B
4x + 1
3х - 8
2x + 23
11
O 45
025
30

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Given abc find the values of x and y. in your final answer, include all of your calculations.

Find the measure for the angle indicated in bold