Precalculus Solutions | Expert Assistance for Problems & Examples

How to find the end behavior of a quadratic function?

socorraob 2021-12-24

If you can travel from Birzeit to Ramallah in 3 different ways
and from Ramallah to Jerusalem in 2 different ways, then
In how many different ways, can you travel from Birzeit to Jerusalem?
Select one:
a. 3
b. 2
c. 6
d. 5

abreviatsjw 2021-12-23

A bag contains 3 red balls and 3 blue balls. 2 balls are selected at random. How do you find the probability of selecting 2 red balls?

agreseza 2021-12-23

How to calculate percentile? Is it possible to get 100 percentile?
How do we calculate percentile? I think it should be calculated as:
$P =$ Total number of candidates
$L =$ Number of candidates whose marks are below yours
$Percentile = (\frac{L}{P}) \cdot 100$
That means if you are the highest in the range, and there are 200,000 candidates and if your marks are same as 7 others then;
$your percentile = (\frac{199992}{200000}) \cdot 100 = 99.996$
That means in any circumstances you can't have perfect 100 percentile.

osteoblogda 2021-12-23

Show that the curve $y = 2 e^{x} + 3 x + 5 x^{3}$ has no tangent line with slope 2.

A coin is flipped 7 times where each flip comes up either heads or tails. How many possible outcomes contain even numbers of heads?

Salvatore Boone 2021-12-21

A box with a square base and no top is to be made from a square piece of cardboard by cutting 4-in. squares from each corner and folding up the sides. The box is to hold $100 \in^{3}$ . What size cardboard piece is required?

Julia White 2021-12-21

Find $\sin θ if \cot θ = - 2 and \cos θ < 0$ .

William Collins 2021-12-21

Find the zeros of $f (x) = 5 x^{2} - 25 x + 30$ .

Determine whether the given congruence is true. 7 = 1 mod 2

Find the product of the complex numbers $z_{1} = \cos \frac{π}{6} + i \sin \frac{π}{6}$ and $z_{2} = \cos \frac{π}{4} + i \sin \frac{π}{4}$
Leave answer in polar form.

kerrum75 2021-12-20

What does the dot product of two vectors represent?
I know how to calculate the dot product of two vectors alright. However, it is not clear to me what, exactly, does the dot product represent.
The product of two numbers, 2 and 3, we say that it is 2 added to itself 3 times or something like that.
But when it comes to vectors $\vec{a} \cdot \vec{b}$ , Im

Joanna Benson 2021-12-20

Dot product of two parallel vectors If $V_{1}$ and $V_{2}$ are parallel, calculate $V_{1} \cdot V_{2}$ . Express your answer in terms of $V_{1}$ and $V_{2}$ .
$V 1 \cdot V 2 =$

Irrerbthist6n 2021-12-20

Row equivalence. What is it exactly?
When matrices are row equivalent... why is this important? If a matrix like:
$[\begin{matrix} 1 & 0 \\ - 1 & 1 \end{matrix}]$
is row equivalent to the identity matrix (add 3 times the first row to the second), what does that mean exactly? Why is this a concept that we have to know as students of linear algebra? These matrices arent

Irvin Dukes 2021-12-19

Tell, please, the formula for ${(a + b)}^{3}$ ?

Holly Guerrero 2021-12-19

What is the value of $\cos \frac{π}{4}$ ?

petrusrexcs 2021-12-19

Write the quadratic function in standard form
$y = 4 {(x - 1)}^{2} + 5$

Mabel Breault 2021-12-18

Verify the identity:
a) $\cos 2 x = \cos^{2} x - \sin^{2} x$
b) $\cos 2 x = 1 - 2 \sin^{2} x$

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.

Precalculus