22 Joey invested R3040 with the interest compounded semi-annually for \( 3 \frac{1}{2} \) years. The final amount paid was R4700. What was the interest rate per year to one decimal?

Each year, a group surveys 50,000 households to study internet usage. In one area of the study, the group is interested in finding out how many hours a day the household spends streaming video from the internet. Describe the five basic steps if a statistical study with an example of their application below. Describe the first step in this statistical study. Choose the correct answer below. A. Create a question to ask members of the study. In this case, the question is "How many hours per day do you spend streaming internet video?" B. State the goal of your study. In this case, it is to discover how many hours per day a household spends streaming internet video. C. State the goal of your study. In this case, it is to discover how many hours per week a household spends streaming internet video. D. State the goal of your study. In this case, it is to discover how many households have internet access. D.

A sample of size 110 will be drawn from a population with mean 36 and standard deviation 14 . Use the Cumulative Normal Distribution Table if needer Part: 0 / 2 Part 1 of 2 (a) Find the probability that \( \bar{x} \) will be between 33 and 38 . Round the final answer to at least four decimal places. The probability that \( \bar{x} \) will be between 33 and 38 is

\( 7 ( x + y ) = 7 \quad + 7 \)

Use the elimination method to find a general solution for the given linear system, where differentiation is with respect to \( t \). \( x^{\prime}=5 x-6 y+\sin t \) \( y^{\prime}=3 x-y-\cos t \) Eliminate \( x \) and solve the remaining differential equation for \( y \). Choose the correct answer below. A. \( y(t)=C_{1} e^{2 t}+C_{2} t e^{2 t}+\frac{19}{40} \cos t+\frac{7}{40} \sin t \) B. \( y(t)=C_{1} e^{-2 t} \cos 3 t+C_{2} e^{-2 t} \sin 3 t+\frac{19}{40} \cos t+\frac{7}{40} \sin t \) C. \( y(t)=C_{1} e^{-2 t}+C_{2} t e^{-2 t}+\frac{19}{40} \cos t+\frac{7}{40} \sin t \) D. \( y(t)=C_{1} e^{2 t} \cos 3 t+C_{2} e^{2 t} \sin 3 t+\frac{19}{40} \cos t+\frac{7}{40} \sin t \) E. The system is degenerate.

\( 2 \frac { 1 } { 2 } l = \square ml \)