A cafeteria serves only main courses and desserts. Some people just have a main, some have just a dessert and some have both.
One day, 65% of the customers had a main course and 90% had a dessert.
a) Show this information on a Venn diagram.

b) What is the probability that a customer had a main course and a dessert? c) If it is known that a customer had a dessert, what is the probability that
they also had a main course?

they can either have 0,1, or infinite solutions

step-by-step explanation:

the equation simplified is 7/8. but the lcd is 8.

josh is incorrect

x= 7 and x= -1

step 2 is wrong and honestly first step is not needed, you just need to figure out the factors

i know its wrong because if you plug in the solutions josh found, they do not work (in the original equation)

x^2 -6x -7 = 0

(x-7) (x+1) = 0

x-7=0 x+1=0

x= 7 x= -1

answer: 5a, -3a

step-by-step explanation: