10y + 20 is an equivalent expression
The height of the triangle is 48/b or 48 over b. That's all I can tell you with the information given.
The easy answer: If, say, B is the zero matrix, i.e.

then

Answer:
<h2>C. 3 gal. 3 qt. 1 pt.</h2>
Step-by-step explanation:
1 gallon = 4 quarts
5 gallons 2 quarts 1 pint = 4 gallons 6 quarts 1 pint
(5 gallons 2 quarts 1 pint) - (1 gallon 3 quarts)
= (4 gallons 6 quarts 1 pint) - (1 gallon 3 quarts)
= 3 gallons 3 quarts 1 pint