Step-by-step explanation:
working together, Sasha and Lorenzo can wash the dishes and 18 minutes. Washing the dishes alone, it will take Sasha 15 minutes more than the amount of time it would take Lorenzo to wash the dishes alone. How long will it take Lorenzo to wash the dishes alone?
Sasha finishes the job alone in 18+15=33 minutes
L = time it takes Lorenzo alone
S = time it takes Sasha alone
Every minute,
Lorenzo will finish 1/L of the job
Sasha will finish 1/S of the job = 1/33
Together, they will finish 1/S+1/L of the job.
We know that it takes them 18 minutes to finish the job together, so we have
1/L + 1/S = 1/18
1/L + 1/33 = 1/18
1/L = 1/18 - 1/33 = 5/198
So
L = 198/5 = 39 3/5 minutes = 39.6 minutes
Answer: it will take Lorenzo 39.6 minutes to finish the dish-washing.
Answer:
Option b
Step-by-step explanation:
Given that a researcher measures IQ and weight for a group of college students.
In general, we think that the weight has nothing to do with IQ of a person and hence not correlated.
But if we go deep, we find that after a certain weight, the person becomes lazy and inactive with a chance to have reduced IQ
Weight gain causes also health problems including less activity of both brain and body and hence there is a chance for less IQ
So we find that as weight increases iq decreases and when weight decreases, IQ increases.
Thus we can say that there is a negative correlation but not necessarily near to one.
Hence option b is right
Use pemdas it would stay the same because there is no number to go in for x y or m
<u>The factor of 12</u>
<em>1, 2, 3, 4, 6</em>
<u>The factor of 20</u>
1, 2, 4, 5, 10
<u>The common factor of 12 and 20</u>
<em>4</em>
hope this helps you :-)
