Answer:
Step-by-step explanation:
, which is also equal to .
Answer:
5
Step-by-step explanation:
x²-6x+y²+4y+13=0
or, x²-6x+y²+4y+9+4=0
or, x²-6x+9+y²+4y+4=0
or, (x²-2.3.x+3²)+(y²+2.2.y+2²)=0
or, (x-3)²+(y+2)²=0
Square of two positive terms is 0
x-3=0
x=3
and
y+2=0
y=-2
so,
x-y=3+2
=5
Answer:
B) the members of the basketball team can't be considered a random sample from the entire collegiate population.
Step-by-step explanation:
The coach is trying to estimate a parameter of a population (the mean resting pulse rates of alla collegians) from a sample statistic (the mean resting pulse of the basketball team's players).
The confidence interval for the parameter is of little use as the sample of team players is not representative of the population of collegians. The sample can not be considered random. Then, the estimation of the parameter will be biased.
600 because the tens place is greater than or equal to 5 so you round to the next number
