Answer:
7/18
Step-by-step explanation:
To find the difference between numbers, subtract. Since we have fractions, we need a common denominator to be able to subtract.
The LCD of 2 and 9 is 2 * 9 = 18
18/2 = 9
18/9 = 2
1/2 - 1/9 = (9 * 1)/(9 * 2) - (2 * 1)/(2 * 9) = 9/18 - 2/18 = 7/18
The cafeteria sold 41 corn chips and 80 potato chips.
Step-by-step explanation:
Let,
Corn chips = x
Potato chips = y
Price of corn chips = $0.80
Price of potato chips = $0.60
According to given statement;
x+y= 121 Eqn 1
0.80x+0.60y=80.80 Eqn 2
Multiplying Eqn 1 by 0.80
Subtracting Eqn 2 from Eqn 3
Dividing both sides by 0.20
Putting y=80 in Eqn 1
The cafeteria sold 41 corn chips and 80 potato chips.
Keywords: linear equation, subtraction
Learn more about linear equations at:
#LearnwithBrainly
Hi there! To do this, we can divide both fractions. We have to convert the fractions into improper fractions. 15 3/4 (63/4) and 2 1/4 (9/4). To divide fractions, keep the first fraction the same, change division into multiplication, and flip the second fraction over. 63/4 * 4/9 is 252/36 or 7 when simplified. The average rate of speed was 7 miles per hour.
This is easy. He first earned $11 on Saturday and then on Sunday he earned some money. We don't know how much he earned, we just know he earned some money. Let's put the expression together. A good place to start would be the $11. Let's add eleven to the expression. And because he earned some more money, it's going to be addition. So currently, the expression stands at $11 +
And because we don't know how much money he made on Sunday, x will be the variable for how much he earned. So the expression will be
11 + x
