Answer:
A. 20/21
Step-by-step explanation:
In order to find this you must divided 16/21 by 4/5
Or 16/21 * 5/4 which is 80/84
After reducing you get 20/21
A, B, and D are the correct answers
Answer:
Take the y not the 7, or 9 and divide that by the qq. Before we divide it by the qq of its c we have to find the qq. I assume you already know the qq but if you don't heres how we find it. Take the 65 in the 9 by subtracting the 199 and then multiplying that by the same number we used in the begging. Y, which is and isn't a number at the same time. It is a letter, yes. But in this case it stands for a number. Assuming you already know the number, 15 you add that to 65, which would give you 80. Easy math, right? Haha. So to get your answer just multiply what you asked me in the first place. Hope this helps u!
Step-by-step explanation:
All we have to do is subtract 11 - 13 to get our answer.
Answer: A) z = -2.
