A car travels 15 miles in 15 minutes how many miles does it travel in 2 hours
1 answer:
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Answer:
39.25
Step-by-step explanation:
the formula is a = (3.14 × ) / 2
the equation is a = (3.14 ×) / 2
5 is the radius
1. = 25
2. 3.14 × 25 = 78.5
3. 78.5 / 2 = 39.25
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Answer:
5.6 gallons.
Step-by-step explanation:
If we take x gallons of 25% grape juice then it will contain gallons of pure grape juice.
Again, if we take y gallons of 75% grape juice then it will contain gallons of pure grape juice.
If we mix them then the total volume will become x + y = 7 gallons ...... (1)
Again the mixture will become 35% juice.
So,
⇒ 0.25x + 0.75y = 0.35x + 0.35y
⇒0.1x = 0.4y
⇒x = 4y........ (2)
Now, solving equations (1) and (2) we get, 5y = 7, ⇒ y = 1.4 gallons
Hence, x = 4y = 5.6 gallons
Therefore, the 25% grape juice was mixed by 5.6 gallons. (Answer)