A box contains 81 coins, only dimes and nickels. The amount of money in the box is $5.30. How many dimes and how many nickels ar
1 answer:
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Answer:
The first equation can be multiplied by 3 and the second equation by 2.
Step-by-step explanation:
Given
Required
How to eliminate x
To eliminate x using addition, we have to do the following;
1. Take the coefficient of x in equation 1; Coefficient = 2
2. Take the coefficient of x in equation 2; Coefficient = -3
3. Multiply equation 1 by 3
4. Multiply equation 2 by 2
5. Add both resulting equations
+
Notice that x has been eliminated;
Answer:
Rani can use the rented canoe for hours.
Step-by-step explanation:
Given:
Rani has at most $20 to spend on a canoe rental.
To rent a canoe $12.To use the canoe cost $3 an hour.
The number of hours is
Now, to find the number of hours rani can use the rented canoe.
Total money Rani has at most to spend = $20.
The rent of a canoe = $12.
The cost of using canoe per hour = $3.
<em><u>According to question:</u></em>
Now, to find the number of hours rani can use the rented canoe:
<em>Subtracting both sides by 12 we get:</em>
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<em>Dividing both sides by 3 we get:</em>
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Therefore, Rani can use the rented canoe for hours.