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frozen [14]
2 years ago
5

It takes 6 cubes to build a staircase with 3 steps. How many cubes does it take to build a staircase with 7 steps?

Mathematics
1 answer:
liraira [26]2 years ago
6 0

Answer:

14

Step-by-step explanation:

if 6=3

x=7

2 cubes is for each step×3=6

2×7=14

14 cubes

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Answer:

The eastbound train travels at 92 mph and the westbound train travels at 96 mph.

Step-by-step explanation:

We know that Velocity = distance / time

If the eastbound train travels at x miles per hour, the westbound train travels at x + 4 mph.

After 3.5 hours, they are 658 miles apart. If we solve for distance the formula given above we have: Distance = velocity x time. We have that the total distance between both trains is 658 miles.

Substituting the values of the problem and solving for x we have

658 = 3.5x+3.5(x+4)\\658=3.5x+3.5x+14\\644=7x\\92=x

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