Answer:
-3-(-7)=4 ,-7-(-3)=-4
Step-by-step explanation:
+ × += +
- × - = +
Answer:
Step-by-step explanation:
<u>It looks like</u>
<u>Cross-multiplication:</u>
- 4m(m+7) = 9*18
- 2m(m+7) = 9*9
- 2m^2 + 14m = 81
- 2m^2 + 14m - 81 = 0
Here is the quadratic equation
The melting point of sea water is -2.4