Answer:
Infinitely many solutions.
Step-by-step explanation:
Let's solve your system by elimination.
x−3y=9;−x+3y=−9
x−3y=9
−x+3y=−9
Add these equations to eliminate x:
0=0
<u>Answer:</u>
Infinitely many solutions.
I=prt,,5.00=.0125*1212p,,p=5.00/.0125*1212=?? Use the calculator
Answer:
9
Step-by-step explanation:
Let q = quarters
Let d = dimes
q + d = 13
0.25q + 0.10d = 2.75
You have two equations and two unknowns.
Take it from here.
If a number's ten digit is 
and the units digit is 
, then you can write the number as 
.
Obviously, inverting the digits would lead to the number 
.
Since this new number is 36 less than the original, we have
Since we also know that the digit in the tens place is three times that in the units place, we can add an equation to form a system:
And thus 
