Answer:
Step-by-step explanation:
a) set up the variables
Let x represent the first number Then y will represent the second number.
b) What is the equation that represents the above situation?
c) Solve the equation.
<u>Substitute x in the second equation and solve for y:</u>
- x + y = 51
- 2y + y = 51
- 3y = 51
- y = 51/3
- y = 17
<u>Then find x</u>
(x + 2)(- 8x + 1) are your factors.
Both of these conditions must be true in order for the assumption that the binomial distribution is approximately normal. In other words, if
and
then we can use a normal distribution to get a good estimate of the binomial distribution. If either np or nq is smaller than 5, then a normal distribution wouldn't be a good model to use.
side note: q = 1-p is the complement of probability p
The area of Victoria's poster is twice the area of Krystal's poster.
<h3>How compare the areas of two similar posters</h3>
The two areas are shown in the image attached below. Each poster represents a rectangle and the ratio between the two areas (
), no unit, is defined by the following formula:
(1)
Where:
- Width of Victoria's poster, in feet.
- Height of Victoria's poster, in feet.
- Width of Krystal's poster, in feet.
- Height of Krystal's poster, in feet.
If we know that
,
,
and
, then the ratio between the two areas is:


The area of Victoria's poster is twice the area of Krystal's poster. 
To learn more on ratios, we kindly invite to check this verified question: brainly.com/question/1504221