I thought you made it zero...
Like for this one, adding 10 on both sides.
-13 would become -3 and then you would use the Quadratic formula.
Though I may be wrong
Answer:
Yes because if x it less than or equal to 3, x can equal 3, meaning it is a solution.
If
2cm...................................5 m
?cm....................................18 m
the lenght of the room= (18*2)/5=7.20 cm
choice c
Answer: Well since the ratio is 9:7 for red to blue well transfer that first by finding out the blue if there are 117 xc=9:7x13 would be 117 red and 7x13=91 blue so the new ratio is 117:91.
So now we add which I'm sure you can do,
117
+
91
_____
208 <-<u><em>your answer </em></u>
X=-3+y is the answer I got
