The answer I think is 47 times I’m not certain though
Answer:
A. The variable x in the first equation has a coefficient of one so there will be fewer steps to the solution.
Step-by-step explanation:
Given


Required
Efficient way of solving the equations
<em>The efficient way of solving this problem is by solving for x in the first equation because it has a coefficient of 1;</em>
The evidence is shown as follows;
<em>Make x the subject of formula in equation 1</em>

<em>Substitute 1 + 3y for x in equation 2</em>


<em>Open bracket</em>


<em>Make y the subject of formula</em>


<em>Divide both sides by 23</em>


Recall that x = 1 + 3y
<em>Substitute 0 for y in the above expression</em>



Solving for y in the second equation will take more steps
Answer:
factor: 5(2x'y'+3xy)
Step-by-step explanation:
thats for factoring, i didnt know what you needed
Answer:
hello your question is incomplete below is the missing parts of the question
answer : K = 80
Step-by-step explanation:
P [ x ≤ 1 ] < 0.1
determine how large k have to be
note : n = k
sample proportion = 0.01
E = 0.05 - 0.01 = 0.04
applying this formula below
E =
0.04 = 1.645
make n subject of the equation
n = 80.3353
hence the value of K ≈ 80
The answer would be C) The correlation is most likely due to a lurking variable.