Which is one way to estimate 102 ÷ 6 = 17? a. 105 ÷ 5 = 21 b. 105 ÷ 10 = 10.5 c. 100 ÷ 5 = 20 d. 102 ÷ 10 = 10.2

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?