Choose the equation you can use to solve the following problem. Jamal spends 15 on a pair of soccer shorts. He has $10 left. How much money did he have before buying the shorts m represents the money Jamal had to start A. m + 10 = 15.
B. m -10 = 5.
C. m + 15 = 40.
D. m-15 = 10.

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?