Let number of quarters in family piggy bank = x
Let number of dimes in family piggy bank = y
Given that "there are 12 times as many dimes are there are quarters". so we can write equation:
y=12x...(i)
Given that " total change is worth $21.75".
We know that 1 quarter = $0.25 and 1 dime = $0.10
So other equation will be :
0.25x+0.10y=21.75...(ii)
Now we just need to solve both equations.
Plug (i) into (ii)
0.25x+0.10y=21.75
0.25x+0.10(12x)=21.75
0.25x+1.2x=21.75
1.45x=21.75
x=15
plug x=15 into (i)
y=12x=12*15=180
Hence final answer is given as:
Number of quarters in family piggy bank = 15
Number of dimes in family piggy bank = 180
Answer:
-2a - 3
Step-by-step explanation:
bº equals 1 due to the zero exponent.
Thus, -2a-3 bº simplifies to -2a - 3.
Answer:
57 meters
Step-by-step explanation:
we know that
Sprint to the finish the professional cyclist travels 380 meters in 20 seconds
so
using proportion
Find out how far does the cyclist travel in 3 seconds
Let
x -----> the distance in meters
Answer:
34
Step-by-step explanation:
Patrick play 6 minutes on the second quarter and 10 on the last two quarters
Since 980÷2=490÷2=245÷5=49÷7=7÷7=1
980=2×2×5×7×7
the greatest perfect square will be
7*2*7*2
14*14=196
