Answer:
Our system is : D + Q = 50 and 0.1*D + 0.25*Q = $9.50
Let D = # of dimes
Let Q = # of quarters
30 Quarters and 20 dimes
Step-by-step explanation:
Let D = # of dimes
Let Q = # of quarters
so
D + Q = 50 and 0.1*D + 0.25*Q = $9.50
We can solve this.
D = 50 - Q
0.1*(50 - Q) + 0.25*Q = $9.50
5 - 0.1*Q + 0.25*Q = 9.5
5 + 0.15*Q = 9.5
0.15*Q = 4.5
Q = 4.5 / 0.15 = 30
D = 50 - Q = 50 - 30 = 20
A represents 12!
12! = 12 * 11 * 10 * 9 * ... (down to 1)
It will take <u>10 years</u> for the investment to reach $1,000.
<em>Sure hope this helps you</em>
Answer:
150 units
Step-by-step explanation:
2(2x)+2(x+12)=4x+2x+(x+3)
4x+2x+24=4x+2x+x+3
24-3=4x+2x+x-4x-2x
21=x
2(21)+(21)+12+2(21)+(21)+12
42+21+12+42+21+12
150
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