Answer:
-6 mph
Step-by-step explanation:
45 is 3/4hour so -8 times 3/4= -24/4=-6mph
Answer: D (5/2, -17/4)
Step-by-step explanation: Using elimination your goal is to get rid or 1 variable so you can solve for the one that's left. By adding the -2y and 2y you will get 0. You will also add the 3x+x (4x) and -1+11 (10). You have now gotten rid of the y and have 4x=10. By dividing each side by 4 we now know x =2.5. D is the only possible solution with x=2.5 (5/2) but to solve for y you plug 2.5 in to an equation as x so) x-2y=11
2.5-2y=11
-2y=8.5 Answer D (5/2,-17/4) y=-17/4 (4.25)
Answer:
6 dollars
Step-by-step explanation:
its math
Answer:
Step-by-step explanation:
Start by factoring -24
6* -4 = -24
7*-3 = -24
you are looking for factors that add to give the middle coefficient +5
7 and -3 add to give 5 and multiply to give -24
( x + 7)(x - 3) = 0
this gives the solution for x, because one or both (x + 7) and/or (x - 3) would have to be zero for them to multiply and be zero.
x = -7
x = 3