Answer:
3.44 cm
Step-by-step explanation:
When the pendulum is at its lowest point, the vertical length of the pendulum is L.
When the pendulum is at its highest point, the vertical length of the pendulum is L cos θ.
So the height difference of the pendulum between its lowest and highest points is h = L − L cos θ.
The pendulum swings 72° from right to left, or 36° from the vertical.
The length of the pendulum is 18 cm.
So the height is:
h = L − L cos θ
h = 18 − 18 cos 36°
h = 3.44
Answer: subtraction property
x-(-6)=18
x+6=18
Subtract 6 from both sides
And you get x=12
Answer:
i think it would be fx9x5
Step-by-step explanation:
sorry if its not write
Answer:
Step-by-step explanation:
1. the 125g
b. 100ml for 1.79
Answer:
Speed of the train is 60 mph.
Step-by-step explanation:
Given:
In t hours the train has traveled s miles.
t= 3 hrs
s= 180 miles
W need to find the formula for v, the speed of the train (in mph) in terms of t and s.
Also we need to calculate v.
Now by the definition of speed which is stated below.
"Speed is defined as the distance covered by an object per unit time."
"So, mathematically, speed of train v mph is equal to distance traveled by the train s miles divided by time t hours which it takes to cover the distance."

Now Substituting given values of t and s in above equation we get.
v= 
Speed of the train is 60 mph