Calcule as seguintes multiplicações: A) (6+4i) (2+3i) =

B) (5+6i) (5+6i) =

C) (7+8i) ²

The marine-life store would like to set up fish tanks that contain equal numbers of angel fish, sword tails, and guppies. What is the greatest number of tanks that can be set up if the store has 12 angel fish, 24 sword tails, and 30 guppies?

The associative property of addition says you can change the (order, grouping, operation) of addends without affecting the sum. Which one?

Find the final cost to the employer. Original price: $129.00 Employee discount: 20% Sale discount: 30% Sales tax: 5% a.$75.85 b.$70.95 c.$68.63 d.$67.72 e.$61.28

Volume of a cylinder with a radius of 3 and a height of 2

Select the postulate that is illustrated for the real numbers. 3 + 2 = 2 + 3

What is the importance of never giving up

Courtney has 4 gallons of milk. She uses 1/2 if the milk to make hot chocolate. Then, she uses 2/3 of the remaining milk to make cookies. How many gallons of milk does Courtney have after making hot chocolate and cookies?

If y = 7.2 when x = 10, what is the value of x when y = 20? (y varies inversely as the square of x.) A. 14.4 B. 6 C. 10 D. 20

If sally has 8 dog and lost 2, how many does she have left?

Consider the equation 4+2 (5x-8) = ax+b for what values of a and b would the equation have infinitely many solutions