42 < -6d
divide 6 by both sides,
7 < -d
(C) d > -7 is the answer.
Answer:
No, it isn't.
Step-by-step explanation:
A random sampling is one whereby every individual or possible member of a population or large sample has an equal chance of bein selected. Either the participants wants to be a part of the sample or not isn't taken into consideration, each and every member just has an equal Chance of being chosen. Volunteering isn't a random sampling protocol or procedure. By making Selection through volunteering, teachers who are more interested in the program are likely to show more interest, hence availing themselves for the programme. A random selection gives every possible subject an equal chance.
Option D:
The dimensions of the matrices don't align properly to find their sum.
Solution:
Given data:
![\left[\begin{array}{c}3 \\-2\end{array}\right]+\left[\begin{array}{cc}5 & -3 \\1 & 4\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D3%20%5C%5C-2%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D5%20%26%20-3%20%5C%5C1%20%26%204%5Cend%7Barray%7D%5Cright%5D)
Dimension of matrix = Number of rows × Number of columns
Dimension of matrix ![\left[\begin{array}{c}3 \\-2\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D3%20%5C%5C-2%5Cend%7Barray%7D%5Cright%5D)
is 2 × 1
Dimension of matrix ![\left[\begin{array}{cc}5 & -3 \\1 & 4\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D5%20%26%20-3%20%5C%5C1%20%26%204%5Cend%7Barray%7D%5Cright%5D)
is 2 × 2
Here, we have to add the two matrices.
<em>The dimension of the matrices must be same to add or subtract matrices.</em>
Here the dimensions are 2 × 1 and 2 × 2.
The dimensions are not same.
Hence we can't find their sum.
Option D is the correct answer.
The dimensions of the matrices don't align properly to find their sum.
The answer for that question is 17.9.
Answer:
x ≤ 0 = no solution
Step-by-step explanation:
