Answer:
x=10
Step-by-step explanation:
group like terms
13x+5x+7x+8x+24+7+2+-3=360
33x+30=360
33×=360-30
33x=330
divide both sides by 33
x=10
Answer:
D
Step-by-step explanation:
We need the formula for arc length (in radians) to solve this problem. The formula is:
![s=r \theta](https://tex.z-dn.net/?f=s%3Dr%20%5Ctheta)
Where
s is the arc length
r is the radius of the circle
is the intercepted angle
In this diagram, we can see that
is beign intercepted by the big arc with measure 20 cm. So arc length, s, is 20
Also, if we look, we see that the radius is 5 cm, so r = 5
Now, we substitute into formula and find
:
![s=r\theta\\20=5\theta\\\theta=\frac{20}{5}\\\theta=4](https://tex.z-dn.net/?f=s%3Dr%5Ctheta%5C%5C20%3D5%5Ctheta%5C%5C%5Ctheta%3D%5Cfrac%7B20%7D%7B5%7D%5C%5C%5Ctheta%3D4)
This is given in radians, so
is 4 radians
D is the correct answer choice.
2 feet = 24 inches. 24 times 15 is 360 inches, or 30 feet.
3 meters = 300 centimeters. 300 times 32 is 9600 centimeters, or 96 feet.
I think you got the choices mixed up a bit, the one with inches is 360, and the one with centimeters is 9600.
The answer is 12.5 km/hr
45/3.6=12.5