Answer:
you do 20% of 424
1 0% of 424 =42.4
you could round it to 42
42
Step-by-step explanation:
P(left) = 0.10
Expected number of lefties among high school grads of 424
= 424 * 0.10
= 42 (to the nearest person)
Here, this website explains it perfectly
https://www.k5learning.com/blog/subtracting-positive-and-negative-numbers
Answer: x=-7 and x=9
Asummung you are solving for x
x+7=0
x=-7
-x+9=0
-x=-9
x=9
