Aqui está um exemplo:
3/9-X/X = 2/9
Que é 3/9-1/2 = 9/9
Boa sorte!
Answer:
7 1/2 feet
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
if ethan jogged 13/3 of a mile (i converted it to an improper fraction) and chloe jogged 1 1/4 as much, thats basically just saying the same as ethan so 13/3, with an additional 1/4 of the distance ethan ran. so it would be 13/3+ 13/12, which is equal to 52/12+13/12, which is 65/12 unsimplified and 5 5/12 simplified
Answer:
Step-by-step explanation:
42 to 36 = 42 : 36
= 
( as a fraction ) ← divide numerator/ denominator by 7
= ← in simplest form
Speed of the boat = u
speed of the current = v
In downstream,
u - v = 280/7
u - v = 40
In upstream,
u + v = 280/14
u + v = 20
Add both equations
2u = 60
u = 30
v = -10
Speed of the boat = 30 km/h
