X+10+10=8+10 is not equal to x=18. It must be x+20=18 x=-2
Answer:
He needs 37.8 meters altogether.
Step-by-step explanation:
Because each plank is 2.7 meters, we can just multiply 14 by 2.7 to get 37.8 meters.
Answer:
4x^2 + 9x + 4 = 0
Using the quadratic formula:
x = [-9 +- sqrt(81 - (-64)] / 2 * 4
x = [-9 +- sqrt (145)] / 8
So, the solution is your second answer:
negative 9 plus or minus the square root of 145 divided by 8.
Heyy,
I think the correct answer is y=1/6
~Girlygir101~