60% of the total (30) can swim
60% of 30 = (60/100)*30 = 0.60*30 = 18
So 18 children can swim
This means 30-18 = 12 cannot swim
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An alternative is to do it this way:
We know 60% can swim so that means 40% cannot swim.
Notice how 100% - 60% = 40%
Or in other words, the 60% and 40% add to 100%. This is because we have two choices: either the person can swim or cannot swim
Since 40% cannot swim, this means
40% of 30 = (40/100)*30 = 0.40*30 = 12
and we get the same result as before
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Final Answer: 12
Answer:
Finally, Juno and her satellite were able to return home to her family.
Step-by-step explanation:
Answer:
d. y =5(1.06)^x
Step-by-step explanation:
growth formula is
y = (1+r)^t
1+r has to be greater than 1
mustangps
Answer:
404.98 m
Step-by-step explanation:
The angle of depression is 5°
The horizontal distance from the airplane to the atoll is 4629 meters.
We need to find the height of the plane.
If we consider a triangle. 4629 meters will be the base and angle is 5°. Let h is the height of the plane. Using trigonometry to find it :
So, the height of the plane is 404.98 m.
Answer:
x=20
Step-by-step explanation:
x - 5 = 15
x +5 = +5
x = 20