Which expressions are equivalent to x + 2y + x + 2 ?
choose all answers that apply:
a) 2(x + y + 1)
b) 2x + 4y + 4
c) none of the above

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?