Answer:
x= -1; y= -2
Step-by-step explanation:
A: 6x+4y= -14
B: -x-5y=11
6B is : -6x-30y=66
A+6B is : -26y=52
so y= -2
so A becomes : 6x+4.(-2)= -14
so x= -1
The probability that a student, chosen at random, does not study chemistry is 20/41.
<h3>
What is Probability?</h3>
Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event. For an experiment having 'n' number of outcomes, the number of favorable outcomes can be denoted by x. The formula to calculate the probability of an event is as follows.
Probability(Event) = Favorable Outcomes/Total Outcomes = x/n
Here, Total number of student = 41
Student who does not study chemistry = 20
So, the probability = favorable outcome / total outcomes
P(not studying chemistry) = 20 / 41
Thus, The probability that a student, chosen at random, does not study chemistry is 20/41.
Learn more about Probability from:
brainly.com/question/11234923
#SPJ1
Answer:
x=1 and y= 6
Step-by-step explanation:
and for y its a positive cause their both negitives
360 divided by 115 = 3.13. Then you divide the 103 by the 3.13 = 32.90
Answer:
0.568516
Step-by-step explanation:
To find the the Coefficient of determination you simply square r.
Just make sure you have the original r value and not the rounded value.
0.754^2 = 0.568516
and then depending on how many decimals you need to round to...
