Question

What is the product? 5[2,3,4,9,-1,-7,11,5,-3]

Answer 1

Answer:

The first option

Step-by-step explanation:

5*2=10

5*3=15

5*4=20

so it should start with [10 15 20]

Answer 2

Answer:

$\large\boxed{\left[\begin{array}{ccc}10&15&20\\45&-5&-35\\55&25&-15\end{array}\right] }$

Step-by-step explanation:

$n\times\left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right] =\left[\begin{array}{ccc}(n)(a)&(n)(b)&(n)(c)\\(n)(d)&(n)(e)&(n)(f)\\(n)(g)&(n)(h)&(n)(i)\end{array}\right] \\\\===============================$

$5\left[\begin{array}{ccc}2&3&4\\9&-1&-7\\11&5&-3\end{array}\right]\\\\=\left[\begin{array}{ccc}(5)(2)&(5)(3)&(5)(4)\\(5)(9)&(5)(-1)&(5)(-7)\\(5)(11)&(5)(5)&(5)(-3)\end{array}\right] \\\\=\left[\begin{array}{ccc}10&15&20\\45&-5&-35\\55&25&-15\end{array}\right]$