Answer:
1.5 h
Explanation:
We know that distance travelled (d) equals rate of travel (r) times time (t) spent in travel. In symbols,
d = rt or rt =d
When Leah starts, Raul is already 30 min (0.5 h) ahead.
So, let t time for Leah and t + 0.5 be the time for Raul.
For Raul: 3(t+0.5) = d
For Leah: 4t = d
When Leah catches up with Raul, both will have travelled the same distance. So,
3(t+0.5) = 4t Remove parentheses
3t + 1.5 = 4t Subtract 3t from each side
t = 1.5 h
It takes Leah 1.5 h to catch up with Raul.
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<em>Check:
</em>
Distance travelled by Raul = 3 × (1.5 + 0.5) = 3 × 2 = 6 mi
Distance travelled by Leah = 4 × 1.5 = 6 mi
Answer:
66 square inches
Step-by-step explanation:
First we have to find out the area of the original piece of metal. Since it is 9 by 9, we can multiply to find that it is 81 square inches. If we remove a 5 by 3 piece, which is equal to 15 square inches, we can subtract 15 from 81 to get the answer - the remaining metal is 66 square inches
Answer:
the answer is b
Step-by-step explanation: