$30, because basically, it's -100, +100, -30.
Answer:
1 hour=40 miles
? hours=350miles
<u>1x350</u>
40
=8 hours 3mins
Step-by-step explanation:
To solve, simply layout an equation.
(2x+3)(x+4)=1
Step 1: Simplify both sides of the equation.
2x2+11x+12=1
Step 2: Subtract 1 from both sides.
2x2+11x+12−1=1−1
2x2+11x+11=0
Step 3: Use quadratic formula with a=2, b=11, c=11.
x=-b±√b^2-4ac/2a
So, the answer for this problem is:
x=-11/4+1/4√33 or -11/4+-1/4√33
The third dot is my answer. But don't take it for granted. Try it yourself and see what you come out with!
