Answer:
-7
Step-by-step explanation:
4/31. There's no more simplified version than that.
She made her mistake at the first step. To simplify a radical, you would find two numbers that multiply by each other to get your original number (under the radical)
and have one of the number be a perfect square.
Her reasoning is wrong because 10*10 is not
![\sqrt{50}](https://tex.z-dn.net/?f=%20%5Csqrt%7B50%7D%20)
. Had she been correct, her answer should have been able to be squared to equal
![\sqrt{50}](https://tex.z-dn.net/?f=%20%5Csqrt%7B50%7D%20)
In other words, she should have done
![\sqrt{25*2}= \sqrt{25} * \sqrt{2}=5 \sqrt{2}](https://tex.z-dn.net/?f=%20%5Csqrt%7B25%2A2%7D%3D%20%5Csqrt%7B25%7D%20%2A%20%5Csqrt%7B2%7D%3D5%20%5Csqrt%7B2%7D%20%20%20%20)
(We used 25 because 25 is a perfect square, 5*5=25).
:)
Answer:
B. 23 games.
Step-by-step explanation:
Current balance: $469
Goal balance: $825.50
Profit per game: $15.50
- 825.50 - 469 = 356.50
They only need $365.50 in order to reach the goal.
- 356.50 ÷ 15.50 = 23
They need to sell 23 games, each selling for $15.50, in order to reach their goal balance, of $825.50.
- Therefore, the answer is B.