Solving the simultaneous equation show that the solution is inconsistent.
<h3>What is Inconsistent solution?</h3>
A simultaneous equation is said to have inconsistent solution when there is no value as the solution. This implies that no value of unknown will satisfy the equation.
Hence no value of x and y satisfies the equation.
4x -2y = 18 ______1
-4x + 2y = -18 ____2
from (1) make y the subject of formular
4x -2y = 18
2y = 4x - 18
y = 2x - 9 ______3
substitute y = 2x - 9 into 2
-4x + 2y = -18
-4x + 2 (2x - 9 ) = -18
-4x + 4x - 18 = -18
-4x + 4x = -18 + 18
0 = 0
This gives no solution hence the simultaneous equation is said to be inconsistent
Read more on inconsistent solutions here: brainly.com/question/15654281
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The first thing you need to do is classify all the men into 4 groups which are:
1) 30 and younger with facial hair: 4
2) older than 3 with facial hair: 5
3) 30 and younger with facial hair: 3
4) older than 30 without facial hair: 4
Question (a): Make a two-way table of the data. Of the men surveyed, how many were 30 and younger? How many did not have facial hair.
with facial hair without facial hair total
30 & younger 4 3 7
older than 30 5 3 8
total 9 6 15
From the data you can see that:
7 men were 30 and younger and 6 men did not have facial hair.
Question (b): Create a two-way relative frequency table that displays the relative frequency of the men 30 and younger and of the men older than 30 who had or did not have facial hair. Express your answer as decimals written to three decimal places.
with facial hair without facial hair total
30 and younger 4/15 3/15 = 1/5 7/15
older than 30 5/15 = 1/3 3/15 = 1/5 8/15
total 9/15 = 3/5 6/15 = 2/5 1
Question c: What percent of men older than 30 had facial hair?
The percent is equal to the relative frequency times 100% so in this case it is equal to (1/3) * 100% = 33.33%
Hope this helps!!! :)
