Solve pls brainliest
2 answers:
Answer:
5 3/5
Step-by-step explanation:
4/5 x 7 = 28/5 = 5 3/5
×
Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(28, 5) = 1. In the following intermediate step, it cannot further simplify the fraction result by canceling.
In other words - four fifths multiplied by seven = twenty-eight fifths.
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Answer:
Speed of the river = km per hour
Step-by-step explanation:
Speed of the boat in still water = 4 km per hour
Let the speed of the river = v km per hour
Speed of the boat upstream = (4 - v) km per hour
Time taken to cover 6 km =
= hours
Speed of the boat downstream = (4 + v) km per hour
Time taken to cover 12 km = hours
Since, time taken by the boat in both the cases is same,
6(4 + v) = 12(4 - v)
24 + 6v = 48 - 12v
12v + 6v = 48 - 24
18v = 24
v =
v = km per hour
Answer:
x=10.4, y=5.2
Step-by-step explanation:
3:y=y:9
y^2=27
y≈5.2
Hope this helps!