12+8k=48
=>8k=36
=>k=36/8
=>k=4.5
False, you only flip the inequality if you divide out a negative.
Answer : Use an app like PhotoMath
Answer:
See below.
Step-by-step explanation:
7x^2 = 343 Divide both sides by 7
7x^2/7 = 343/7
x^2 = 49 Take the square root of both sides.
sqrt(x^2) = sqrt(49)
x = +/- 7
Answers
I think the last two are kind of iffy. I'm not sure you can call them solutions, but the question probably assumes they are. If you use all four answers and get it wrong, them submit +7 and - 7.
Answer:
false
Step-by-step explanation:
he needs at least 45.5 to fill his 13 gallon tank.
