To solve this problem, we know that the formula for average
speed is:
average speed = total distance travelled / total time
Now let us first calculate for the total distance
travelled. Calculating:
total distance travelled = (70 km / hr) * 2 hr + (63 km /
hr) * 5 hr
total distance travelled = 140 km + 315 km
total distance travelled = 455 km
Now for the total time:
total time = 2 hours + 5 hours
total time = 7 hours
Hence, the average speed is therefore:
average speed = 455 km / 7 hours
<span>average speed = 65 km / hr</span>
Answer:
Step-by-step explanation:
-1\2x>4
-x> 8
x < -8
The one without a shaded knob starting from -8 on the x-axis; projecting leftward.
Answer:
I think maybe B not 100% sure
Step-by-step explanation:
Answer: Too little information
We need to know how much the butter costs per pound.
Answer:
82.8424 feet
Step-by-step explanation:
The leaf, the base of the tree and the top of the tree form a triangle.
The adjacent cathetus to the 46 degrees angle is 80 feet. The opposite cathetus to the 46 degrees angle is the tree height that we want to know. So, using the relation between the opposite cathetus and the adjacent cathetus (so the tangent of the angle), we can find the tree height (h):
tan(46) = h/80 = 1.0355
h = 80*1.0355 = 82.8424 feet
