Step-by-step explanation:
8x + 14y = 4 ...1
-6x - 7y = -10 ...2
...2 × 2 in 2 sides of the equation
-12x -14y = -20 ...3
...1 + ...3
8x + 14y +(-12x -14y) = 4 +(-20)
8x + 14y - 12x -14y = 4 - 20
-4x = -16
x = (-16)/(-4)
= 4
replace x in ...1 or ...2 you will reserve y value
and answer in the term of (x,y)
Answer:
He is been paid $7 per hour
Step-by-step explanation:
140dollars/ 20 hours
Answer:
B
Step-by-step explanation:
13) 120 + 1.5 + 0.25 = 121.75 pounds
14) 4 - 1.5 = 2.5 pints
15) (2.25)(32)= $72
1/3 + 1/2 + 1/5 = 10/30 + 15/30 + 6/30 = 31/30 = 1 and 1/30 gallons of paint
