If the following system of equations was written as a matrix equation in the form ax = c, and matrix a was expressed in the form: a= {a c} {b d}, find the value of a-b +c+d. 2x+8y=7 4x-2y=9 , i dont know which number would be which letters

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Ateam of runners is needed to run a 1 2 -mile relay race. if each runner must run 1 4 mile, how many runners will be needed?