Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series.[infinity]∑n=1(−1)n+1/6n

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Which expression is the factorization of x^2+10+21

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas