3 years ago

Can someone help with question B please it's urgent

Mathematics

1 answer:

8_murik_8 [283]3 years ago

5 0

Answer:

| B | = - 9

Step-by-step explanation:

The determinant of a 2 by 2 matrix B = $\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right]$ is

| B | = ad - bc

Then for

B = $\left[\begin{array}{ccc}0&1\\9&8\\\end{array}\right]$

| B | = (0 × 8 ) - (1 × 9 ) = 0 - 9 = - 9

You might be interested in

X to the second power = 1/1000. What is X?

dimulka [17.4K]

This would be what x is

3 0

3 years ago

What is the slope of the line that passes through (-4, 5) and (2, -3)?

vagabundo [1.1K]

Slope m has a form of,

$m=\dfrac{\Delta{y}}{\Delta{x}}=\dfrac{y_2-y_1}{x_2-x_1}$

We have points A and B,

$A(x_1,y_1),B(x_2,y_2)\longrightarrow A(-4,5),B(2,-3)$

Now insert the values in the slope formula,

$m=\dfrac{-3-5}{2-(-4)}=\dfrac{-8}{6}=\boxed{-\dfrac{4}{3}}$

The answer is A.

Hope this helps.

r3t40

4 0

4 years ago

The square of a number is equal to 6 more than the number. Find all such numbers.

AURORKA [14]

Answer:

The answer is C

Step-by-step explanation:

4 0

4 years ago

Given the functions flx) = 3x2, g(x) = x2 - 4x + 5, and h(x) = -2x2 + 4x + 1, rank them from leasrto greatest based on their axi

MakcuM [25]

9514 1404 393

Answer:

f(x), h(x), g(x)

Step-by-step explanation:

For a quadratic in standard form, ...

ax² +bx +c

the axis of symmetry is ...

x = -b/(2a)

For the various functions, the axes of symmetry are ...

f(x): x = 0/(2·3) = 0

g(x): x = -(-4)/(2·1) = 2

h(x): x = (-4)/(2(-2)) = 1

From least to greatest axis of symmetry the functions are ...

f(x), h(x), g(x)

4 0

3 years ago

A bookstore owner has 48 science fiction books and 30 mysteries.He wants the most books possible in each package, but all packag

likoan [24]

The bookstore owner can make six packages. There will be eight science fiction books and five mystery books in each package. This is because 6 is the highest common factor of both 48 and 30, and 6 x 8 = 48 and 6 x 5 = 30.

4 0

3 years ago

Read 2 more answers

Can someone help with question B please it's urgent ​

Can someone help with question B please it's urgent