A hamburger costs 30¢ more than a hot dog and 20¢ less than a cheeseburger. If 13 hamburgers cost 75¢ less than 2 hot dogs and 2 cheeseburgers, how much does a
hamburger cost?

45

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

answer: corresponding angles

explanation: both angles are at two different sides which makes it seem like a would be the right choice however both are exactly the same, no matter of their placement both have the same degree

a could be the answer just as much as c, some more info would us answer. hope this