Answer:
$240
Step-by-step explanation: 12 x 20 = 240
The non response bias can happen if the chosen sample is too small for a study.
<h3>What is the non response bias?</h3>
This is the term that is used to refer to the type of bias that happens in a research study because the some of the study participants could not participate in the study.
This type of bias is a very serious matter of concern while carrying out research.
Read more on non response bias here:
brainly.com/question/21885738
#SPJ1
Since its adding and subtracting just add the coefficients of similar terms (coefficient is the number in front, term is the coefficient and variables, similar terms are terms that have the same variables)
3ab-9ab+7ab
3-9=-6: -6ab+7ab
-6+7=1: 1ab or ab :)
Answer:
c=6 They sold a total of 114 cans
Step-by-step explanation: The ratio is 7:12, so last week, he sold 42 cans, meaning that you need to divide 42 by to get 6 in order to figure out the amount Ellen sold last week. Then do 6 times 12 to get 72 cans sold for Ellen. Add 72 to 42 to get 114 cans sold in total.
{4x + 4y = 20 | ÷4<span>
{2x -2y = -18 | </span>÷2
{x + y = 5
{x -y = -9
--------------
2x = -4
x = -2
x + y = 5
-2 + y = 5
y = 5 + 2
y = 7
The answer is (-2, 7)
