Solve the following pairs of simultaneous equations by substitution.
check that your solutions satisfy both equations.
a. y= x – 2 b. y = 2x + 6
y = 3x + 4 y = 4 - 2x c. y = x +1 d. y = x - 2
x + y = 3 3x + y = 14
e. y = 2x + 1 f. y=1 - 2x
x + 2y = 12 x + y = 2

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Asap will give brainiest to first person to answer what is the measure of angle b in the triangle? enter your answer in the box.m∠b=