the scientific notation for 0.089 is 0.089 = 8.9 x 10-2
2y^2 - y - 1 = 0
(2y + 1) (y - 1) = 0
2y + 1 = 0 or y - 1 = 0
y = -1/2 or y = 1
Answer:
\/
Step-by-step explanation:
▪Picture 1. x = 28
-
▪Picture 2. I don't know what in trying to solve.
▪Picture 3.
•ABC = 50
•DEF = 95
•GHI = 65
•JKL = 55
▪Picture 4. I dont know how to do that
You have to round that decimal into a fraction
Answer:
x = ±sqrt(19)
Step-by-step explanation:
x^2-8=11
Add 8 to each side
x^2-8+8=11+8
x^2 = 19
Take the square root of each side
sqrt (x^2) = ±sqrt(19)
x = ±sqrt(19)
