(4 – 2i)(6 + 2i)
FOIL
First : 4*6 =24
Outer: 4*2i = 8i
Inner: -2i* 6 = -12i
Last: -2i*2i = -4i^2 =-4(-1) =4
Add together
24+8i-12i+4
28-4i
Answer: 28-4i
Answer:
Alice is correct
Step-by-step explanation:
Answer:
132
Step-by-step explanation:
1. -3(2z-8d) Solve within the parenthesis.
2. 2(6)=12, 8(7)=56
3. Do the math within the parenthesis with our new integers. 12-56=-44
4. multiply both integers now. -3(-44) = 132
*a negative times a negative wil give you a positive answer.
The equation <u>6 + 9a = 51</u> can help find out how many adults were in the group.
Answer:
The diagonal is 30 inches
Step-by-step explanation:
Assuming a rectangular suitcase (with right angles), we can use the Pythagorean theorem to solve this
a² + b² = c²
so we plug our two values to find the diagonal (hypotenuse)
24² + 18² = c²
576 + 324 = c²
900 = c²
c = √900
c = 30
The diagonal is 30 inches
