It will take 15 hours to mow 9 lawns
Answer:
Step-by-step explanation:
11) 4x+2=5x-10 => 4x-5x=-10-2 => -x=-12 => x=12
12)25x=24x+4 => x=4
13)20x=21x-5 => -x=-5 => x=5
14)20x+10x=180 => 30x =180 =>x=6
To understand it better,you may check the picture down below.
Answer:
a) 20 samples contains exactly 3 quarts of spoiled milk.
b) 2280 contains at most 2quarts of spoiled milk .
Step-by-step explanation:
see attachment for explanation.