In the picture are the steps I used to solve it.
At first, let us solve The equation
We will subtract 4 from both sides
Then let us square both sides
Subtract 2 from both sides to get the value of x
You have two choices with 14
Which one will you choose?
To answer this you must know does this value including the domain or not
Let us try this value for x in the equation if the left-hand side equals the right-hand-side then the value is not extraneous
Since the right-hand side has the same value, so 14 is not extraneous.
So the correct answer is the third choice.
Answer:
Y=3
Step-by-step explanation: 5x3=15, 15+3=18
Answer:
C
I just used elimination. Hope this helps!
Lets suppose,
R is right eye sighted only (left eye blind)
<span>L is left eye sighted only (right eye blind) </span>
<span>B is both eyes sighted </span>
<span>N is no eyes sighted (blind) </span>
<span>We can deduce the following equations based on what we've been given: </span>
<span>1) R+B=2 </span>
<span>2) L+B=3 </span>
<span>3) N+R=4 </span>
<span>4) N+L=5
</span>
<span>subtract equation 1 from equation 2 </span>
<span>L-R=1 </span>
<span>
The smallest number we can start with is 1. </span>
<span>Let's assume that R=1, and determine the other values based on this assumption. </span>
<span>1) B=1 </span>
<span>2) N=3 </span>
<span>3) R=1 </span>
<span>4) L=2 </span>
So we can calculate that Linus saw 7 total bats that night. and they might have been 4 blind, 2 full sighted and 1 blind in the right eye only