# Precalculus questions and answers

Recent questions in Precalculus
Trent Carpenter 2021-11-05 Answered

### Let $$\begin{bmatrix}3\\1\end{bmatrix}$$ and $$\begin{bmatrix}8\\6\end{bmatrix}$$ Compute the distance from y to the line through u and the origin.

Emily-Jane Bray 2021-11-05 Answered

2021-11-04

### Find the quadratic function that is the best fit for​ f(x) defined by the table below x f(x) 0 1 2 -0.6 4 -1.4 6 -1.4

Daniaal Sanchez 2021-11-01 Answered

2021-10-28

### Show that if A ⊆ C and B ⊆ D, then A × B ⊆ C × D

Kaycee Roche 2021-10-28 Answered

### The owner of a grocery store can sell 2654 gallons of milk each week at $2.41 per gallon and 2954 gallons of milk each week when he offers a sale price of$1.91 per gallon. Assume that the number of gallons sold S is a linear function of the price p per gallon. a) Find a formula for the gallon sales, S(p), as a function of price p. (Don't include S in your answer.) b) How many gallons would you expect to sell at \$3.21 per gallon?

Emily-Jane Bray 2021-10-27 Answered

2021-10-26

### A dog in an open field runs 12.0 m east and then 28.0 m in a direction 50.0° west of north. In what direction and how far must the dog then run to end up 10.0 m south of her original starting point?

jeanie 2021-10-26

### Find the unit tangent vector T(t ) at the point with the given value of the parameter t. $$\displaystyle{r}{\left({t}\right)}={\left\langle{t}^{{{2}}}-{2}{t},{1}+{3}{t},{\frac{{{1}}}{{{3}}}}{t}^{{{3}}}+{\frac{{{1}}}{{{2}}}}{t}^{{{2}}}\right\rangle}$$

Uknown 2021-10-25

2021-10-25

2021-10-25

### As a test of orienteering skills, your physics class holds a con test in a large, open field. Each contestant is told to travel 20.8 m due north from the starting point, then 38.0 m due east, and finally 18.0 m in the direction 33.0° west of south. After the specified displacements, a contestant will find a silver dollar hidden under a rock. The winner is the person who takes the shortest time to reach the location of the silver dollar. Remembering what you learned in class, you run on a straight line from the starting point to the hidden coin. How far and in what direction do you run?

Precalculus problems and solutions are hard to find online even though this topic is quite popular among college students majoring in Engineering. Keeping this fact in mind, we decided to provide you with a list of questions and answers that will help you with various precalculus problems. Regardless if it is related to equations or any other problem, these precalculus problems and composite functions examples and solutions below will help you see the logic and compare solutions as you check your original task.
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