Answer:
The value of the expression is - 5.
Step-by-step explanation:
(-2x +10) - (-6x + 5y + 12) + (x +8y - 16)=
-2x+10+6x-5y-12+x+8y-16=
(-2x+6x+x)+(-5y+8y)+(10-12-16)=
5x+3y-18
if x=5 and y=-4 then
5*5+3*(-4)-18=25-12-18=25-30=-5
Answer:
x = 13
Step-by-step explanation:
x= Esmeralda's speed
x+5 = Diana's speed
they each travel for 6 hours
speed x time = distance
x(6) + (x+5)(6) = 186
Esmeralda's distance + Diana's distance = total distance
6x+6x+30= 186
(12x = 186-30)
12x = 156
x = 13
Esmeralda travels at 13 mph and Diana travels at 18 mph
(To be completely honest, I'm not sure. I'm not in college so you shouldn't use my answer as a first resort :') )
Actual Answer: 2 times 6,254 equals 12,508
Rounding Answers: round 6,254 into 6,000. So 2 times 6,000 equals 12,000