Answer:
90 yards in 15 minutes =6 yds/min
90 yards in 9 minutes =10 yds/min
x = current rate
r = rowing rate
r + x = 10
r - x = 6 Adding both equations
2 r = 16
rowing rate = 8 yds/min
x = 2 yds/min (current rate)
Step-by-step explanation:
sin()=Sin(-0) =Sin 0=0
Option C Sin()=0
Also, using unit circle, Sin()=0
see the picture attached for further explanation.
24 hope it helps you!!
Answer: -7n^2-6n-8
-1: -1, 1
-12: -12, -6, -4, -3, -2, -1, 1, 2, 3, 4, 6, 12