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
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Working backwards:
17-3=14
14/2=7
7 is the second term in the sequence. Continue backwards.
7-3=4
4/2=2
2 is the first term in the sequence, aka your answer.
Set up the proportion with the numbers on top equalling the cars and the numbers on the bottom representing the trucks.
c equals the number of unknown cars.
To solve the proportion, cross multiply (multiply 8 by 9 and 36 by c) and solve for c.
72 = 36c
Divide 36 from both sides to get the answer.
c = 2
If there are 9 trucks, there are 2 cars.
You can check this by dividing 2 by 9, and dividing 8 by 36. Since they both equal the same number, this answer is correct.
Hope this helps =)
Tan is opposite÷ adjacent.
So tan(d) = 7÷24. It is already in the simplest form.
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