High School: Number and Quantity

Practice Questions

Common Core: High School - Number and Quantity › High School: Number and Quantity

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1

If , and , find .

2

Solve.

$x^{2}-2x+5$

3

Find the conjugate of the complex number.

4

What is the determinant of the following matrix?

$\begin{bmatrix} 27&-1 \ 8& 12 \end{bmatrix}$

5

Compute

$22\begin{bmatrix} 7 & 6&16 \ 0&0 &12 \end{bmatrix}$

6

Compute the sum of the two matrices.

$\begin{bmatrix} -1 & 5 & -4\ -1& -1& -3 \end{bmatrix} + \begin{bmatrix} 2&3 &6 \ -4&-5 & -1 \end{bmatrix}$

7

True or False:

The following matrix multiplication is possible.

$\begin{bmatrix} 4&3 &2 \end{bmatrix} \begin{bmatrix} 6\ 7\ 8 \end{bmatrix}$

8

Calculate

$\begin{bmatrix} -10&19 \ -4& 16 \end{bmatrix} \times \begin{bmatrix} 11\ 0 \end{bmatrix}$

9

Find the inverse of the following matrix.

$\begin{bmatrix} 4&2 \ 1& 2 \end{bmatrix}$

10

Which of the following matrices represents the equations, , and ?

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