Answer:
Amy has 12 5¢ coins
Step-by-step explanation:
Let <em>x</em> represent 20¢ coins and <em>y</em> represent 5¢ coins.
Amy has four more 20¢ coins than 5¢ coins. Hence:
And the total value of all her coins is $3.80. Thus:
This yields a system of equations:
We can solve by substitution. Substitute the first equation into the first:
Distribute:
Combine like terms:
And divide both sides by 0.25. Hence:
Thus, Amy has 12 5¢ coins.
Using the first equation:
Substitute:
Thus, Amy has 16 20¢ coins.
In conclusion, Amy has 12 5¢ coins and 16 20¢ coins.
Answer:
x = -1, y = 4.
Step-by-step explanation:
y = -x + 3
y = x + 5 Adding these 2 equation eliminates x:
2y = 0 + 8
y = 8/2 = 4.
Substituting for x in the first equation:
4 = -x + 3
4-3 = -x
1 = -x
x = -1.
<u>ANSWER TO PROBLEM:</u>
10 teams.
3x10=30 and then the one person is left over
Sure hope this helps you and pls mark me brainiest
I believe the answer is 106.92! Hope this helps <3
First, you have to find what 80% of 15 is. In order to do that you have to change 80% percent to decimal, which would be .80. Then, multiply .80 and 15 to get 12. Subtract 12 from 15 and your answer is 3.
