Precalculus Solutions | Expert Assistance for Problems & Examples

Two nonzero vectors are parallel if they point in the same direction or in opposite directions. This means that if two vectors are parallel, one must be a scalar multiple of the other. Determine whether the given vectors u and v are parallel. If they are, express v as a scalar multiple of u.

Lorenzolaji 2021-11-10

Find a polynomial of the specified degree that has the given zeros. Degree 4; zeros -2, 0, 2, 4

shadsiei 2021-11-10

Steam is lo be condensed on the shell side of a heat exchanger at $75^{\circ} F$ . Cooling water enters the tubes at $50^{\circ} F$ at a rate of 43 lbm/s and leaves at $65^{\circ} F$ . Assuming the heat exhanger to be well-insulated, determine the rate of heat transfer in the heat exchanger and the rate of condensation of the steam.

boitshupoO 2021-11-09

Consider a roulette wheel consisting of 38 numbers 1 through 36, 0, and double 0. If Smith always bets that the outcome will be one of the numbers 1 through 12, what is the probability that (a) Smith will lose his first 5 bets; (b) his first win will occur on his fourth bet?

elchatosarapage 2021-11-09

A coin will be tossed 100 times. You get to pick 11 numbers. If the number of heads turns out to equal one of your 11 numbers, you win a dollar. Which 11 numbers should you pick, and what is your chance (approximately) of winning? Explain.

Tammy Fisher 2021-11-09

Find a second-degree polynomial P such that P(2)=5, P'(2)=3, and P''(2)=2

coexpennan 2021-11-09

Describe all solutions of Ax=0 in parametric vector form, where A is row equivalent to the given matrix.
$[\begin{matrix} 1 & 3 & 0 & - 4 \\ 2 & 6 & 0 & - 8 \end{matrix}]$

Tyra 2021-11-08

Find the value(s) of h for which the vectors are linearly dependent. Justify each answer.
$[\begin{matrix} 1 \\ 5 \\ - 3 \end{matrix}], [\begin{matrix} - 2 \\ - 9 \\ 6 \end{matrix}], [\begin{matrix} 3 \\ h \\ - 9 \end{matrix}]$

achieverh3 2021-11-08

Determine if the given set is a subspace of $P_{n}$ for an appropriate value of n. Justify your answers. All polynomials of the form $p (t) = a t^{2}$ , where a is in $R$ .

nagasenaz 2021-11-07

The number of accidents occurring on a highway each day is a Poisson random variable with parameter $λ = 3$ . (a) . So, u need to find the probability that 3 or more accidents occur today. (b) Repeat part (a) under the assumption that at least 1 accident occurs today.

sibuzwaW 2021-11-07

What is the probability that Bo, Colleen, Jeff, and Rohini win the first, second, third, and fourth prizes, respectively, in a drawing if 50 people enter a contest and a) no one can win more than one prize. b) winning more than one prize is allowed.

mattgondek4 2021-11-07

$List five vectors in Span {v_{1}, v_{2}} For each vector, show the weights on v_{1} and v_{2} used to generate the vector and list the three entries of the vector. Do not make a sketch.$

glasskerfu 2021-11-07

Determine if the system has a nontrivial solution. Try to use as few row operations as possible.
$2 x_{1} - 5 x_{2} + 8 x_{3} = 0$
$- 2 x_{1} - 7 x_{2} + x_{3} = 0$
$4 x_{1} + 2 x_{2} + 7 x_{3} = 0$

vazelinahS 2021-11-06

Show that the equation has no solutions with integers x and y $2 x^{2} + 5 y^{2} = 14 .$

Wotzdorfg 2021-11-06

An insurance company looks at its auto insurance customers and finds that
a) all insure at least one car,
b) 85% insure more than one car,
c) 23% insure a sports car, and
d) 17% insure more than one car, including sports car.
Find the probability that a customer selected at random insures exactly one car and it is not a sports car.
What is the formula for an intersection of two events where one event is a complement?
For example $P (A^{'} \cap B)$ , what will be its formula? For example this question.

Clifland 2021-11-06

The Maclaurin series of f(x) if's first four terms should be written out $f (0) = 2, f^{'} (0) = 3, f^{″} (0) = 4, f^{‴} (0) = 12$

Trent Carpenter 2021-11-05

The reaction
$A + B y i e l d s C + D$
$r a t e = k [A] {[B]}^{2}$
has an intial rate of $0.00220 \frac{M}{s}$
what will the initial rate be if $[A]$ is halved and $[B]$ is tripled? Answer must be in $\frac{M}{s}$
What will the intial rate be if $[A]$ is tripled and $[B]$ is halved? Answer must be in $\frac{M}{s}$

York 2021-11-05

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

Emily-Jane Bray 2021-11-05

Determine if b is a linear combination of the vectors formed from the columns of the matrix A.
$A = [\begin{matrix} 1 & - 4 & 2 \\ 0 & 3 & 5 \\ - 2 & 8 & - 4 \end{matrix}], b = [\begin{matrix} 3 \\ - 7 \\ - 3 \end{matrix}]$

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

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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