Answer:
Answer:
1/9
Step-by-step explanation:
4 people use all three facilities, then
16 - 4 = 12 people use the gym and the track and do not use the pool;
9 - 4 = 5 people use the pool and the track and do not use the gym;
19 - 4 = 15 people use the gym and the pool and do not use the track.
At least two facilities use 4 + 12 + 5 + 15 = 36 people, 4 of them use all three facilities. Thus, the probability that a randomly selected person which uses at least two facilities, uses all the facilities is 4/36=1/9
Answer:
18 - 6y
Step-by-step explanation:
6(3 - y) ← multiply each term in the parenthesis by 6
= 18 - 6y
Answer:
Step-by-step explanation:
x = polio
y = measles
x + y = 60....x = 60 - y
4x + 2y = 128
4(60 - y) + 2y = 128
240 - 4y + 2y = 128
-4y + 2y = 128 - 240
-2y = -112
y = -112 / -2
y = 56 <==== there were 56 doses of measles vac. given
x + y = 60
x + 56 = 60
x = 60 - 56
x = 4 <=== there were 4 doses of polio vac. given
After 10 s, the bucket has rotated
Step-by-step explanation:
The motion of the bucket on the water wheel is a periodic motion, which means that it repeats itself periodically. The period of the motion is the time it takes for the bucket to returns to its original position: it can be found from the graph by looking at after how much time the graph has again the same shape.
We see that if we start from x = 0 seconds, then the graph has the same shape again (=it has completed one full cycle) at x = 20 seconds, so the period is
T = 20 s
This also means that in a time of 20 seconds, the bucket has covered a full revolution, so an angle of
Therefore, in order to find how many degrees x the bucket has rotated in
t = 10 s
We can use the rule of three:
And solving for x, we find
Learn more about periodic motions:
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Answer:
10meter square
Step-by-step explanation:
1÷1.2×12
0.8333×12
10meter square