Answer:
1 at (2.5, 2.5)
Step-by-step explanation:
you can try graphing it on desmo
Answer:
1180
Step-by-step explanation:
(42×28)+4 =x
x= 1180
Answer: 271
Step-by-step explanation:
The formula we use to find the sample size is given by :-
, where is the two-tailed z-value for significance level of
p = prior estimation of the proportion
E = Margin of error.
If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes
Given : Margin of error : E= 0.05
Confidence level = 90%
Significance level
Using z-value table , Two-tailed z-value for significance level of
Then, the required sample size would be :
Simplify,
Hence, the required minimum sample size =271
Answer:
x= -4 and x=-2
Step-by-step explanation:
Using a graphing calculator (See picture attached) we find that the solution to the equation are the x-values at which the graph of the function intercepts the x-axis. It ocurrs at x= -4 and x=-2.
Given that exact roots were found, there's no need to state the consecutive integers between which the roots are located.