The formula S-
man+an)
2 gives the partial sum of an arithmetic sequence. What is the formula solved for a,?
2S-a, n
n
2S+a, n
a,
n
a, -2S+an+n
a, -28-a, nun

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

The first and second steps to solve the equation 3x/5 + 5 = 20.are shown below 3x/5 + 5 - 5 = 20 - 5 3x/5 (5/3) = 15 (5/3)a.addition property of equality b.subtraction property of equalityc.multiplication property of equalityd.division property of equality

Nright triangle xyz, the right angle is located at vertex y. the length of line segment xy is 12.4 cm. the length of line segment yz is 15.1 cm. which is the approximate measure of angle yzx?