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: Am thinking (0,10)
Step-by-step explanation:
Answer:
91.5
Step-by-step explanation:
183% of 50
183/100 = 1.83
1.83 × 50 = 91.5.
Hope this helps!!
Answer:
12
Step-by-step explanation:
A₃ = 3 * 2⁽³⁻¹⁾ = 3 * 2² = 3 * 4 = 12
Answer:
Sample
Step-by-step explanation:
The people that are riding the roller coaster are only a select few people out of everyone in the entire park.
If you think about it this way, there are other rides in the park (there might be bumper cars and a Ferris wheel, etc.), so the people on the roller coaster are just a small group of the entire population of people in the park
