Which expression is equal to - 2i (-9 6i)

a. - 12 18i

b. 18-12i

c. 12 18i

d. 18 12i?

Solve for 2 unknowns : 2a+b=5; 3a+2b=9

a father is now 38 years older than his son. Ten years ago he was twice as old as his son. let x represent the age of the son now.

Lowest common multiple of 10 and 23

The table shows the results of a random survey of students in grade 9 and grade 10. Every student surveyed gave a response. Each student was asked if he or she exercised less than 5 hours last week or 5 or more hours last week.

Brad had a a card collection with 64 basketball cards 32 football cards and 24 baseball cards he wants to arrange the cards in equal piles with only one type of cards in each pile how many cards can he put in each tilea?

Nate went shopping at a bookstore. the price of a book was 14.95 but it had a sale sticker. when he paid for it he was charged 12.71 before the sales tax was added. what was the percent of discount to the nearest percent? o. o

an ant walks at about 3 inches per second. how many miles per day could an ant travel if it walked without taking a break

An 8-pint container of window cleaner costs $17.12. What is the price per cup?

G = 7 h = 5 Work out the value of 3g + 2h

Choose one of the factors of 27x3 + 512y3 3 3x - 8y 9x2 - 24xy + 64y2 9x2 + 24xy + 64y2