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>
<u>Answer:</u>
<u>Step-by-step explanation:</u>
Given:
Mint condition coins = 
Total number of coins = 
Ratio
The questions asks for the ratio between mint condition coins to the total number of coins, so:
Mint condition coins : number of coins = 
(simplified form)
Hope this helps :)
Answer:
9/10
Step-by-step explanation:
4/10 + 2/10 + 3/10 = 9/10
4 + 2 + 3 = 9
Answer:
23, 25
Step-by-step explanation:
let the first number be represented as A, since there are two odd numbers, the second number would be A + 2
A + A+2 = 48
2A + 2 = 48
2A = 48 - 2
2A = 46 ( divide both sides by 2)
A = 23
since we know the next number to be A + 2
= 23 + 2 = 25
the two numbers are 23 and 25
If the sale is of 60% it means that it is being sold for:
100 - 60 = 40%
Now use the rule of three to find the answer:
40 - 199
100- x
(100 * 199) / 40 = x
19900 / 40 = x
497,5 = x
Answer:
Hope it helped,
Happy homework/ study/ exam!
