Answer:
Step-by-step explanation:
x + y = 7 ------------(I)
y = 7 - x ------------(II)
x + 2y = 11 --------------(III)
Substitute y = 7 - x in equation (III)
x + 2 * (7 -x) = 11
x + 2*7 - 2*x = 11
x + 14 - 2x = 11
x - 2x + 14 = 11
- x + 14 = 11
Subtract 14 from both side
-x = 11 - 14
-x = -3
Multiply both sides by (-1)
x = 3
Substitute x=3 in equation (II)
y = 7 - 3
y = 4
Should be all real numbers
Answer:
No
Step-by-step explanation:
6/2=3
14/42=1/3=0.33333333333333333333
Easier than it looks, all you have to do is first subtract 13 from 299. You should get 286. Then, you just divide this number by two to get 143. Finally, since it asks for ZENA'S average, you add the 13 back to 143 to get the final answer of the average number of pins Zena took down, which is 156!
Answer:
Step-by-step explanation:
1)Population of Interest : All UC Berkeley Undergraduates
Sample : 129 UC Berkeley Undergraduates
2)
Can the results of the study be generalized to the population of interest?
No, because the sample is not representative of the population since it consists of only UC Berkeley undergraduates.
3)
No, because the the study is observational.
