87 24/25.......24/25 = 0.96......answer is 87.96
224 7/10....7/10 = 0.7....answer is 224.7
686 49/50...49/50 = 0.98...answer is 686.98
Answer:
<u>94</u>
Step-by-step explanation:
Equating the mean to the scores :
- 88 = 79 + 89 + 90 + x / 4
- 352 = 258 + x
- x = <u>94</u>
I think it is B I hope I am right and helped
Step-by-step explanation:
![{x}^{2} - 9x - 36 \\ (x - 12)(x + 3)](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20%20-%209x%20-%2036%20%5C%5C%20%28x%20-%2012%29%28x%20%2B%203%29)