Answer:
D
Step-by-step explanation:
A margin of error provides information on the percentage points ones results will differ from the real value.
If margin of error is 3% and estimated value is 6%, it means that the confidence interval would be within ±3 of the estimated value.
So, the confidence interval would be between 3% (6% - 3%) and 9% (6% + 3%)
Answer:
11. x=5
12. y= -1
13. m= -22
14. m=-4
15.n= 12, -4
16. x=6 ,-5
17. m=4
18. x= 3, -1
Step-by-step explanation:
I hope this help ;-)
Answer:
(-2 ,3)
Step-by-step explanation:
Step 1: Rewrite first equation
x = 4 - 2y
-2x + y = 7
Step 2: Substitution
-2(4 - 2y) + y = 7
Step 3: Solve <em>y</em>
-8 + 4y + y = 7
-8 + 5y = 7
5y = 15
y = 3
Step 3: Plug in <em>y</em> to find <em>x</em>
x + 2(3) = 4
x + 6 = 4
x = -2
Answer:
at this point just hack it