Answer: <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>
Step-by-step explanation:
The equation 
can be solved by squaring both sides:
We can see that -1 and 7 are solutions, but make sure they are not extraneous by substituting them in the original equation:
The square root of 49 equals 7, but the square root of -1 is an imaginary number.
The correct choice is <em>"7 is a solution to the original equation. The value –1 is an extraneous solution."</em>
Answer:
5/6 is about a 84%, and 84% of 15 questions is 12.6. so the teacher just made the grading simplified
Step-by-step explanation:
Answer:
( 5 + s ) 4 = 20 + 4 s
Step-by-step explanation:
<u><em>Distribution property</em></u>
Let a, b and c are numbers then distribution property is defined by
a( b + c) = a b + a c
(a+ b) c = a c + b c
Given that
( 5 + s ) 4 = 5× 4 + s× 4
= 20 + 4 s
<u><em>Final answer:-</em></u>
( 5 + s ) 4 = 20 + 4 s
$135
First, change the mixed number to an improper fraction.
2 1/4 = 9/4
Next, change $60 to an improper fraction.
$60 = 60/1
Then, multiply straight across on both the top and bottom to get 540/4.
Finally, simplify and get 135.
Hope this helped :)
By PEMDAS (or any alternative), <em>the first step should be to divide</em>, as D comes before A. So, 16 ÷ 4.
