Answer:
10.5
Step-by-step explanation: if he got the pants on sale the price would be 59.5 becuase 70*15%=10.5 and u would subtract 70-10.5=59.5
70-59.5=10.5
we have
------> equation 
------> equation 
Multiply by the equation
------> equation 
Sum equation and equation
Substitute the value of x in the equation
therefore
the answer is the option B
Answer:
x = -9
Step-by-step explanation:
Let unknown number = x
Largest 2-digit number = 99
x * (-11) = 99
x = 99 ÷ (-11)
x = -9
Answer:
if am sure it's A
Step-by-step explanation:
X + y = 2
Substitute x + 8 into y
x + x + 8 = 2
2x + 8 =2
(Subtract 8 from both sides)
2x = -6
(Divide both sides by 2)
x = -3
Subsitute x = -3 into either equation to find y
x + y = 2
-3 + y = 2
(Add 3 to both sides)
y = 2 + 3
y = 5
Or y can be solved for using:
y = x + 8
y = -3 + 8
y = 5
