Answer:
The third one
Step-by-step explanation:
Answer:
![40x^{2} y^{4} -70x^{2} y^{2} +90xy^{3}](https://tex.z-dn.net/?f=40x%5E%7B2%7D%20y%5E%7B4%7D%20-70x%5E%7B2%7D%20y%5E%7B2%7D%20%2B90xy%5E%7B3%7D)
Step-by-step explanation:
1. 10xy · 4xy^3 = ![40x^2y^4](https://tex.z-dn.net/?f=40x%5E2y%5E4)
2. 10xy · -7xy = ![-70x^{2} y^{2}](https://tex.z-dn.net/?f=-70x%5E%7B2%7D%20y%5E%7B2%7D)
3. 10xy · 9y^2 =
Final step: add up all of those values together to make an equation!
Answer:
![90xy^3](https://tex.z-dn.net/?f=90xy%5E3)
Final Answer: ![40x^2y^4-70x^2y^2+90xy^3](https://tex.z-dn.net/?f=40x%5E2y%5E4-70x%5E2y%5E2%2B90xy%5E3)
Answer:
60, and m = 30, and 1 min 20.
Step-by-step explanation:
For A, the 60 is the starting point meaning that the temperature was intitally 60 degrees
For B, if we divided both sides by 2 we get the answer m = 30, meaning every minute, it was up 30 degrees.
For C, we know that in one minute it will be 90 degrees, so 60 seconds = 30 degrees. So lets divided both sides by 3 to get 10 degrees. We get 20 seconds. It will take 1 min and 20 for it to be 100 degrees.
Hopefully thats right.
I think the answer is angle EBF but i can't read the letters correctly to be sure
<span />