Answer:
Vectors are used to represent physical magnitudes that have an associated address.For example,if we want to represent the displacement of an object,it is not enough to describe only the distance as 10 meters, it is also necessary to describe in which direction the displacement occurred,for example,30°towards the northeast.
Hope this helps:)
In the 
plane, we have 
everywhere. So in the equation of the sphere, we have
which is a circle centered at (2, -10, 0) of radius 4.
In the 
plane, we have 
, which gives
But any squared real quantity is positive, so there is no intersection between the sphere and this plane.
In the 
plane, 
, so
which is a circle centered at (0, -10, 3) of radius 
.
A)
160c / 20m
1c / (20/160)m
therefore, he takes 1/8 minutes to burn 1 calorie
b)
m = rise/run = 20/160 = 1/8
Answer:
x=0.5
Step-by-step explanation:
hope it helped.
Answer:
239 degrees.
Arc is circumference so length = r * 4.17133691221
Step-by-step explanation:
We eliminate RSQ in degrees = 90 + 31 = 121
So that;
RPQ = 360 -121 = 239 degrees
2pi radius (239/360) = r6.28318530718 (0.66388888888)
= r * 4.17133691221
