Answer:
111.6
Step-by-step explanation:
Katie, Let the number of nickles = N Since there are 7 more dimes than nickles, the number of dimes D = N + 7 Since there are 4 more quarters than nickles, the number of quarters Q = N + 4 Since quarters = $0.25, dimes = $0.10, and nickles = $0.05 and all added together = $4.90 ⇒ 0.25·Q + 0.10·D + 0.05·N = 4.90 Now multiply through by 100 to eliminate the decimal: 25Q + 10D + 5N = 490 Substitute for Q and D 25(N+4) + 10(N+7) + 5N = 490 25N + 10N + 5N +100 +70 = 490 40N + 170 = 490 ⇒ 40N = 320 ⇒ N = 320/40 N = 8, D = N+7 = 15 Q = N+4 = 12 Check: 25(12) + 10(15) + 5(8) = 300 + 150 + 40 = 490
Answer:
1 hour
Step-by-step explanation:
Well if the wind is blowing in his face 4 miles per hour and pushing him home 4 miles per hour then the wind pushing him home would make up for the time lost by the wind blowing in Ted's face because the wind was going at the same speed both times.
<em>Note: My answer assumes that the ground was flat. If it was not flat but slanted like a hill, then this answer would be incorrect.</em>
Answer:
you don`t have the answer choices
Step-by-step explanation:
