For both problems, we can use the section formula.
1) 
2) 
Answer:
21
Step-by-step explanation:
Since the order of the essays isn't important, the number of ways you can choose 2 from 7 is:
₇C₂ = 7! / (2! (7−2)!)
₇C₂ = 7! / (2! 5!)
₇C₂ = 7×6×5! / (2×1 × 5!)
₇C₂ = 7×6 / 2
₇C₂ = 21
A
Timing anything means multiplication. Inverse mult means anything to time the numbers by will EQUAL 1. So the the other multiplication is correct.
Answer: first of all, i would put it in an equation. then i would slove that and use that answer.
Step-by-step explanation:
use the equation <u>12X x 15 = y </u>
<u>12x=15</u>
12 12
x= 180
Answer:
Step-by-step explanation:
Sum of angles of triangle add up to 180°
Let the third angle be x
Create an equation and solve for x
Hope I helped!
Best regards! :D
