7/9 + 5/12 with lcm pls help and give explanation pls
2 answers:
Step-by-step explanation:
1. ) 7/9 multiply x 4 and 5/12 multiply x 3 , to get the same denominator( bottom number)
2.) once you multiply 7/9 by 4 you should get 28/36 and once you multiply 5/12 by 3 you should get 15/36
3.) Now add the numerator( top numbers) so add 15 and 28 = 43
4.) Next put 43 as the numerator(top number) and 36 as the denominator (bottom number) = 43/36
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Answer:
The probability that an elementary or secondary school teacher selected at random from this city is a female or holds a second job is 0.90.
Step-by-step explanation:
Denote the events as follows:
<em>X</em> = an elementary or secondary school teacher from a city is a female
<em>Y</em> = an elementary or secondary school teacher holds a second job
The information provided is:
P (X) = 0.66
P (Y) = 0.46
P (X ∩ Y) = 0.22
The addition rule of probability is:
Use this formula to compute the probability that an elementary or secondary school teacher selected at random from this city is a female or holds a second job as follows:
Thus, the probability that an elementary or secondary school teacher selected at random from this city is a female or holds a second job is 0.90.