Answer:
infinitely many solutions
Step-by-step explanation:
Given the 2 equations
2x + 2y = 18 → (1)
x + y = 9 → (2)
Equation (1) is twice (2)
Thus the equations are equal and will have infinite solutions
Answer:
The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find M as such
In which 
is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.
The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.
The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.
Answer:
the function is always increasing
Step-by-step explanation:
if you look at the graph, as x increases, y increases, no matter how small the increase
Answer:45.9
Step-by-step explanation:
Circumference=12
Length of arc=8/5=1.6
π=3.14
Circumference=2 x π x r
12=2x3.14xr
12=6.28 x r
Divide both sides by 6.28
12/6.28=(6.28 x r)/6.28
2=r
r=2
Length of arc =Φ/360 x 2 x π x r
1.6=Φ/360 x 2 x 3.14 x 2
1.6=(Φ x 2 x 3.14 x2)/360
1.6=12.56Φ/360
Cross multiply
1.6x360=12.56Φ
576=12.56Φ
Divide both sides by 12.56
576/12.56=12.56Φ/12.56
45.9=Φ
Φ=45.9
