Answer:
soory to say but you can search
For the first problem, the answer is B. For the second problem, the answer is A.
Answer:
x=1 y = -1/2
(1,-1/2)
Step-by-step explanation:
7x-2y=8
5x+2y=4
I would use elimination since we have 2y in one equation and -2y in the other
7x-2y=8
5x+2y=4
--------------------
12x = 12
Divide each side by 12
12x/12 = 12/12
x =1
The substitute back into equation 2
5(1) +2y = 4
5 +2y = 4
Subtract 5
5-5+2y = 4-5
2y = -1
Divide by 2
2y/2 = -1/2
y = -1/2
Answer:
Another explanation could be that people who are depressed are more likely to keep a diary.
This is an observational study, so it is not possible to ascribe that writing in a diary (cause) leads to depression (effect).
Their interpretation of the results was flawed because the researchers assumed an order of cause and effect.
Step-by-step explanation:
Step-by-step explanation:
(4-x)(4-x)=16-4x-4x+x= 16-7x
.........
