Answer:
171
Step-by-step explanation:
9 * 19 is 171 dollars so that's what he'll owe
Answer:190.40 dollars.
Step-by-step explanation:
Okay if we know that Jess bought 3 pairs for 71 dollars divide 71 by 3 then multiply that by 8.
Answer:
x=-32/29

Step-by-step explanation:
3x+4y=36 Equation 1
-5x+3y=35 Equation 2
Multiplying equation 1 with 3 (value before y in equation 2) and equation 2 with 4 (value before y in equation 1) we obtain equations 3 and 4 as follows
9x+12=108 equation 3
-20x+12y=140 equation 4
Subtracting equation 3 from equation 4 we obtain
-29x=32
x=-32/29
To find the value of y, we substitute the value of x into equation 2 as initially given in the equation
-5(-32/29)=35-3y
-5(-32/29)-35=-3y
