Answer:
1(29 + 29)= a
Step-by-step explanation:
If the DVD costs 29$, and he buys 2, then you will just add them and multiply them by one.
Well nine times 199 is 1,791but im not sure if thats what its asking
Answer:
4 mph
Step-by-step explanation:
Let :
Boat speed = 20 mph
speed of current = x mph
Distance against current = 2 miles
Distance with current = 3 miles
speed against current will be ; 20 - x
speed with current will be ; 20 + x
Time =distance / speed against time against = time with current
Solving Mathematically ;
2/(20-x )=3/(20 +x)
2(20+x )= 3( 20-x )
40+2x = 60-3x
3x +2x=20
5x=20
x = 20 / 5
x = 4 mph
Speed of current = 4 mph
Answer:
Step-by-step explanation:
First, we need to make the demoninators the same so we times 4 by 5 and whatever we do to the bottom, we do to the top, and 5 by 4.
demoninator now doesn't change unless you're multiplying or dividing.
Answer:
b. 5
Step-by-step explanation:
10x+18≤-12
10x≤-30
x≤-3
anything less than or equall to -3 is an option therefore it is b
