Ralph and waldo start in towns that are 70 miles apart and travel in opposite directions for 4 hours. ralph travels 15 miles per hour faster than waldo. let w stand for waldo's speed and write algebraic expressions to answer the following questions a. how far did waldo travel? miles b. what was ralph's speed? mph c. how far did ralph travel? miles d. what is the distance between ralph and waldo after the 4 hours? miles

Step-by-step explanation:

Let Waldo's speed = W

Let Ralph's speed = W + 15

A

Waldo's distance = speed * Time

Time = 4 hours.

Speed = w

distance = 4 * w

B

Ralph's speed is W + 15. It's not clear if you need a number. We'll get around to that later.

C

Ralph traveled  4*(W + 15)

D

4w + 70 + 4(W + 15) = d

You really can't get a definite answer to these questions. Even if you knew whether they were heading away from each other or towards each other it wouldn't help.

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step-by-step explanation:

the answer is 13 cm