Which of the following are equivalent expressions to the definition of a rate r=\frac{d}{t}? That is, which can be derived by starting with the definition and using valid equation-manipulation steps? (Suggestion: solve the rate definition for each of the different variables, and find your answers in the choices below.)
1 point
1
Question 2
2.
Which choice gives the correct expression solving the following equation for b?
1 point
1
Question 3
3.
The equation for the volume of a cylinder is V=\pi r^{2}h where V is the volume, r is the radius, and h is the height of the cylinder. Which equation correctly expresses the constant \pi as a ratio of other terms?
1 point
1
Question 4
4.
In finance, the amount of money you deposit or borrow is often called a "principle", and the amount of interest you earn or owe is calculated as a percent of that principle amount. If interest is "simple" (or "non-compounded"), we can use the formula P=Irt, where P and I represent the principle and interest, r the interest rate per time period, and t the number of time periods, Which equation will give the rate in terms of the other factors?
1 point
1
Question 5
5.
To convert between the Fahrenheit and Kelvin temperature scales (degrees Kelvin is a useful way of talking about really cold temperatures) , we use
Solve this equation to give F in terms of K (make an equivalent expression that starts with F=)
1 point
1
Question 6
6.
Use the equation you derived in question 5 to convert 0^{\circ} K ("absolute zero") into degrees Fahrenheit.