Answer:
The solution is the point (2,-2)
Step-by-step explanation:
we have
-----> equation A
-----> equation B
step 1
Multiply by 7 equation A both sides

-----> equation C
step 2
Multiply equation B by 4 both sides

-----> equation D
step 3
Adds equation C and equation D

Find the value of x
substitute the value of y in any equation
equation A

therefore
The solution is the point (2,-2)
Answer: 77.84
Step-by-step explanation: you subtract 235.68 and 157.84 and that is you answer,
Answer:
$297.50
Step-by-step explanation:
If she earns 105 for three hours, she would be earning $35 an hour.
105/3=35
If she works 8.5 hours, to find the amount you would multiply the hourly rate ($35) by 8.5. So, the answer is
8.5x35=$297.50
So
x- quarters
y - dimes
z- nickels
The system of equations would be
x+10=y
z+5=x
x+y+z= 4.75
1. 208/x = 100/130
2. multiply both sides by x
3. 208 = 0.76923x
4. divide both sides by 0.76923
5. x = 270.4