Answer:
0.9500, 0.4407, 0.3904
Step-by-step explanation:
(a) P(x ≤ 60). We need to find the area under the standard normal curve to the left of x = 60. The appropriate command when using a TI-83 Plus calculator with statistical functions is normcdf(-1000, 60, 49, 6.7). This comes out to 0.9500. P(x ≤ 60) = 0.9500
(b) P(x ≥ 50) would be normcdf(50, 1000,49, 6.7), or 0.4407
(c) P(50 ≤ x ≤ 60) would be normcdf(50,60,49,6.70, or 0.3904
Answer:
10.5%
Step-by-step explanation:
Use the interest formula to fill in the given values and solve for the rate:
I = Prt
where I is the interest earned on principal P at annual rate r for t years.
78.75 = 750·r·1
r =78.75/750 = 0.105 = 10.5%
The rate of interest paid was 10.5%.
Answer:
Step-by-step explanation:
As a result of the pythagorean theorem we can say that a^2+b^2=c^2
In this case, we have bc and ab missing side ac. So the equation looks something like this
dont get confused by the ac in the problem i only wrote it like that because ac is the length representation. So 16+ac^2=121 and with algebra we can solve to ac^2=105 or side ac=
"You draw a number line and write what you did and make up names and numbers and then do your work."
Answer:
You are right
Step-by-step explanation:
So basically find the absolute maximum of the graph that the function creates, the highest peak is the spot with the greatest y-value, in this case is (60, 1600).
The x-value that creates the greatest y is also the x-value of the vertex for that function of yours (since your function has end behavior of both ends down). To find the x-value of the vertex, get the average of the 2 x-intercepts. So (20+100)/2, which is 60.