It would be positive. The minus sign makes the negative a positive and adds the two. Just remember keep, change, change.
Answer:
Step-by-step explanation:
base=42 m
height=h=?
base angle θ=60°
tan 60=h/42
h=42tan 60=42√3≈72.75 m
height of taller building=135+42√3 m≈135+72.75≈207.75 m≈208 m
Answer:
30 mph
Step-by-step explanation:
train stopped after 520 miles
780 miles to go
stopped at 20 hours
stopped for 4 hours
34 hours used up...
26 hours left
780 miles to go
780 miles/26 hrs = 30 m/hr
Answer:
j = 35 - k
35 = j + k
k = 35 - j
(the 2nd, 3rd, and 4th one)
The lines are perpendicular if their slopes are negative reciprocal of the other.
Since 9/2 is just a reciprocal and not the NEGATIVE reciprocal of 2/9, the lines are NOT perpendicular.