Step-by-step explanation:
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
Answer:
Step-by-step explanation:
All u need to do is graph the points so for -4,5 go 4 left then go up
So, we know the sum of the first 17 terms is -170, thus S₁₇ = -170, and we also know the first term is 2, well

well, since the 17th term is that much, let's check what "d" is then anyway,
Angle A: 60 degrees
Angle B: 30 degrees
Angle C: 90 degrees
Answer:
y=68
Step-by-step explanation: