Answer:
37.7
Step-by-step explanation:
2πr = circumference
r=d/2
r=12/2
r=6
2*π*6 = 37.68
The answer is D. 15+18+12+5= 50 and there are 5 ramblers
Answer:
c
Step-by-step explanation:
saya fikir jee cara tuu
Answer:
The speed of the first train is 45 mph and the speed of the second train is 75 mph
Step-by-step explanation:
Let x represent the speed of the first train in mph. Since the second train, is 30 mph faster then the first, therefore the speed of the second train is (x + 30).
The first train leaves at 1:00 pm, therefore at 6:00 pm, the time taken is 5 hours. Therefore the distance covered by the first train at 6:00 pm = x mph * 5 hours = 5x miles
The second train leaves at 3:00 pm, therefore at 6:00 pm, the time taken is 3 hours. Therefore the distance covered by the second train at 6:00 pm = (x + 30) mph * 3 hours = (3x + 90) miles
Since the second train overtakes the first at 6:00 pm, hence:
3x + 90 = 5x
2x = 90
x = 45
Therefore the speed of the first train is 45 mph and the speed of the second train is 75 mph (45 mph + 30 mph).
Answer:
5.27
Step-by-step explanation:
Step 1 : 527
Simplify ———
2
<u>Equation at the end of step 1 :
</u>
<em> 527
</em>
<em> ——— ÷ 50
</em>
<em> 2 </em>
Step 2 :
527
Divide ——— by 50
2
Final result :
527
——— = 5.27000
100
