Help solve this matrix question

Question

asked Sep 24, 2020 175k views

2 Answers

Kasterma · Answer 1 · 2020-09-24T10:53:57+0000

Answer:

A

Explanation:

Multiply each component of the matrices by the scalar, that is

$\left[\begin{array}{ccc}-4a\\-4b\\\end{array}\right]$ =
$\left[\begin{array}{ccc}180\\-510\\\end{array}\right]$

Equate corresponding elements, that is

- 4a = 180 ⇒ a = - 45

- 4b = - 510 ⇒ b = 127.5

Hence

(a)/(b) =
(45)/(127.5) = -
(6)/(17) → A