Answer:
C, Plus or minus 3
Step-by-step explanation:
to solve 3x² - 27 = 0, we want to get the x by itself, so lets add 27 to both sides.
3x² = 27 < divide both sides by 3 to get x alone
3x²/2 =x²
27/3 = 9
x² = 9 < we can use the square-root property and square both sides of the equation to get x alone. we use the ± because there are 2 possible solutions to a square rooted number
√x² = x
√9 = 3
x = ±3
looking at our answer choices, the correct answer is C
Answer:
I'm not sure how to explain this one but i you get it
Step-by-step explanation:
The valley in California has an elevation of feet "below sea level".
Below sea level means below 0 feet, so it'd have -5 feet
The one in Arizona would be lower than it, so the elevation will definitely be -9 feet
X = 42/56 so 56 cancel and we have 42 = 42
so x = (42/56)%
1. If he can place 12 eggs in each crate then are 12 eggs in one crate. (12 x 1 = 12)
2. If there are 8 rooms in a house, each with one bed then there are 8 beds in total. (8 x 1 = 8)
3. There are 20 ministers. ( 20 x 1 = 20)
4. If Sam earns $20 per hour, and he works one hour he will earn $20. (20 x 1 = 20)