Answer:
Step-by-step explanation:
13 × 3^6 = 9477
a. (0.60x + 0.70y)- 50 = 10
<=> 0.60x + 0.70y = 60
b. (x+y) = 5(x-y)
x+y=5x-5y
<=> 4x - 6y = 0
76 degrees
180-38-38 is 104
180-104 is 76 since it's a straight line which equals to 180 degrees