The value of x in the equation 
is x=(7+3
)/2,
(7-3)/2.
Given equation .
We have to find the solution of the equation.
Equation is solved to find the value of variables. The number of values of the variable depends on the highest power of variables.
let (x-5)=u-------------------1
equation becomes 
solution of a quadratic formula
x=-b±
/2a
on comparing with general form a=1,b=3, c=9
u=-3±
=-3±
=-3±
=-3±
+3
, 
=-3-3
put the values of 
in equation 1
x-5=
x-5=-3+
x=-3+3
x=7+3
put the values of in equation2
x-5=
x-5=-3-3
x=7-3
Hence the values of x are 7+3
, 7-3.
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Based on the data, the most likely correlation coefficient would be -1.
The slope between 20 and 30 days is -1, and it represents the change in the surface area of the lake per day.
The data represents correlation, not causation.
Since the data would form a perfectly straight line through the points, the correlation coefficient would be -1 for a perfect decreasing fit.
To find the slope, find the change in the surface area between those days, the change in the days, and write it as surface area/days: 80-90=-10; 30-20=10; -10/10=-1
This is not causation because there could be lurking variables we cannot see.
Answer:
0.8 hours
Step-by-step explanation:
From the question;
- Speed of Min-jun is 27 miles per hour
- Distance covered is 21 miles
We need to determine the time he takes to cover the distance given;
We need to know that;
Speed = Distance ÷ time
Rearranging the formula;
time = Distance ÷ speed
Thus;
Time = 21 miles ÷ 27 miles per hour
= 7/9 hours
= 0.8 hours
Thus, he took 0.8 hours to cover the distance covered
Answer:
x=-10
Step-by-step explanation:
(3x+2)/4=-7
3x+2=4×-7
3x=-28-2
3x=-30
x=-10
Here are five digits 0,1,4,5,8 use all five digits to to make this correct _ _ x 2 = _ _
54x2=108
