A diagonal support beam is attached to the gate of a fence as shown. Which angles must be congruent in order for the left and right sides of the gate to be parallel?
A) 1 and 2
B) 3 and 2
C) 1 and 3
D) 2 and 4

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

What is the value of x when x + 7 = 21?