Precalculus Solutions | Expert Assistance for Problems & Examples

With one score eliminated from the population, the new mean is discovered to be $μ = 19$ , which corresponds to a population of N = 16 scores with a mean of p = 20. What was the significance of the removed in-e score?

nicekikah 2020-10-26

Find DA and AD , if possible , where $D = D_{g} (3, 0, 2, - 1)$ and A is given matrix.
$A = [\begin{matrix} 2 i & 0 & 1 & 3 i \\ 0 & 1 + i & 8 & 0 \\ - i & 1 & 0 & i \\ 1 & 1 & 1 & 1 \end{matrix}]$

Lipossig 2020-10-26

Use the matrix P to determine if the matrices A and A

ka1leE 2020-10-26

obtain a single matrix whose column space has $B = (1, 1, 0, 0), (9, 1, 0, 1)$

midtlinjeg 2020-10-26

Find a family of the matrices that is similar to the matrix $Q = [\begin{matrix} p & - 2 \\ 4 & - 3 \end{matrix}]$

Burhan Hopper 2020-10-26

Determine whether A is similar B .If $A \sim B$ , give an invertible matrix P such that $P^{- 1} A P = B$
$A = [\begin{matrix} 1 & 1 & 0 \\ 0 & 1 & 1 \\ 0 & 0 & 1 \end{matrix}], B = [\begin{matrix} 1 & 1 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{matrix}]$

Cabiolab 2020-10-25

Solve for X in the equation, given
$3 X + 2 A = B$
$A = [\begin{matrix} - 4 & 0 \\ 1 & - 5 \\ - 3 & 2 \end{matrix}] and B = [\begin{matrix} 1 & 2 \\ - 2 & 1 \\ 4 & 4 \end{matrix}]$

Lennie Carroll 2020-10-25

Evaluate the following.
$\int \frac{\cos^{5} (3 z) d z}{\sin^{2} (3 z)}$

defazajx 2020-10-23

A drug production company has three branches A, B, and C, each of which produces two types of medicine daily. If the first branch produces 100 boxes of the first type, 400 boxes of the second type, and the branch B produces 200 boxes of the first type, 300 boxes of the type The second and branch C produce 150 boxes of the first type, 250 boxes of the second type.
A) Systems the data in a matrix in two ways
B) Are the two matrices equal? Why?

Emeli Hagan 2020-10-23

Sketch a graph of the function. Use transformations of functions whenever possible. $f (x) = 3 x^{2}$

lwfrgin 2020-10-23

The probability of rain in San Francisco on a given day is $\frac{1}{6}$ . The probability of rain in Miami is $\frac{5}{6}$ . Use two number cubes to find the simulated probability of rain in both cities.

vestirme4 2020-10-21

If $A = [\begin{matrix} 1 & 1 \\ 3 & 4 \end{matrix}], B = [\begin{matrix} 2 \\ 1 \end{matrix}], C = [\begin{matrix} - 7 & 1 \\ 0 & 4 \end{matrix}], D = [\begin{matrix} 3 & 2 & 1 \end{matrix}] and E = [\begin{matrix} 2 & 3 & 4 \\ 1 & 2 & - 1 \end{matrix}]$
Find , if possible,
a) A+B , C-A and D-E b)AB, BA , CA , AC , DA , DB , BD , EB , BE and AE c) 7C , -3D and KE

foass77W 2020-10-21

This is the quesetion. Suppose that a does not equal 0.
a. if $a \cdot b = a \cdot c$ , does it follow that $b = c$ ?
b. if $a \times b = a \times c$ , does it follow that $b = c$ ?
c. if $a \cdot b = a \cdot c$ and $a \times b = a \times c$ , does it follow that $b = c$ ?
Either prove the assertion is true in general or show that it is false for a concret choice of vectors a, b, c

FobelloE 2020-10-21

Given
$f (x) = x^{2}, g (x) = x + 7$
Find $(f \circ g) (x) .$
Find the domain of $(f \circ g) (x) .$
Find $(g \circ f) (x) .$
Find the domain of $(g \circ f) (x) .$
Find $(f \circ f) (x) .$
Find the domain of $(f \circ f) (x) .$
Find $(g \circ g) (x) .$
Find the domain of $(g \circ g) (x) .$

kuCAu 2020-10-20

Flipping coins results in a probability of 0.4 heads for coin 1 and 0.7 heads for coin 2, respectively. One of these coins is picked at random and flipped a total of 10 times.
(a) What is the probability that exactly 7 of the 10 flips land on heads?
(b) Given that the first of these ten flips lands heads, what is the conditional probability that exactly 7 of the 10 flips lands on heads?

Amari Flowers 2020-10-20

A credit card contains 16 digits between 0 and 9. However, only 100 million numbers are valid. If a number is entered randomly, what is the probability that it is a valid number?

Ava-May Nelson 2020-10-20

What is the probability of obtain tails and an odd number?

Kyran Hudson 2020-10-20

In this problem, allow $T_{1} : R^{2} \to R^{2}$ and $T_{2} : R^{2} \to R^{2}$ be linear transformations. Find $K e r (T_{1}), K e r (T_{2}), K e r (T_{3})$ of the respective matrices:
$A = [\begin{matrix} 1 & - 1 \\ - 2 & 0 \end{matrix}], B = [\begin{matrix} 1 & 5 \\ - 2 & 0 \end{matrix}]$

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