Rule needed: i^2 = -1
Standard form a + bi
(3 + 2i)(7 - 5i) FOIL
3 * 7 = 21
3 * - 5i = - 15i
2i * 7 = 14i
2i * -5i = - 10i^2 = - 10 * -1 = 10
Putting it all back together.
31 - i
If something is 60% off, that means it is now going to be 40% of its original price because
100 - 60 = 40
To find final price multiply the percentage as a decimal by the price.
40% is 40/100 which as a decimal is 0.4
0.4 x 100 = $40
The pants will be 40 dollars.
4- 20
I created an equation for this one:
4x+x=100
- 4x= four times the amount of the other number
- x= the number
- combine like terms
5x=100
x=20
5. One pretzel costs $3
Create an equation:
Mulitply 2s+p=7 by -2 so you can use elimination.
Combine equations
p=3
For question number one, Jovi WILL most likely win.
Hope this helps.
