(-3i + 4)(3i + 4)
Use the FOIL method
multiply the Firsts: -3i * 3i = -9i² = because i² = -1 ⇒ -9i² = -9(-1) = 9
multiply the Outers: -3i * 4 = -12i
multiply the Inners: 4 * 3i = 12i
multiply the lasts: 4 * 4 = 12
9 - 12i + 12i + 12 = 21
Answer:
happy birth day
Step-by-step explanation:
Answer: 24%
Step-by-step explanation:
Since there are 6 tables with six chairs at each, multiply 6 x 6, which equals 36.
Only a fraction of the room is full, so you need to create a fraction for this problem. In this case, it would be 36/150 (36 chairs taken, 150 total chairs).
To convert this fraction into a percent, divide the numerator by the denominator, then multiply by 100.
36 / 150 = .24 x 100 = 24%
