Answer with Step-by-step explanation:
We are given that
u+ v and u-v are orthogonal
We have to prove that u and v must have the same length.
When two vector a and b are orthogonal then

By using the property

We know that



Magnitude is always positive
When power of base on both sides are equal then base will be equal
Therefore,

Hence, the length of vectors u and v must have the same length.
The standard form of a line:

We have the equation of a line in the slope-point form:
use distributive property
add 3 to both sides
multiply both sides by 2
subtract x from both sides
change the signs

Answer:
k = 63
Step-by-step explanation:
3 x 21 = 63
4x=251
251-84=167
4x=167
X=41.75
One tire will cost $41.75
Answer:
3.6 x 10⁵ g of sodium chloride
Step-by-step explanation: