Given
Brian's house: (-7, 9)
Sue's house: (-7, -2)
Find
The number of units between Brian's house and Sue's house.
Solution
Both Brian and Sue live on the "street" x=-7, so the distance between their houses is the distance between -2 on that street and +9 on that street. We always consider distance to be positive, so it doesn't matter whether we start at Brian's house and go -11 units to Sue's house, or start at Sue's house and go +11 units to Brian's house. Either way, we travel 11 units.
_____
"Displacement" is another matter. That has a sign associated with it and there is always a reference direction that is positive. Movement in the opposite direction results in a negative displacement. "Distance" is always positive.
Answer:
a+0= a
Step-by-step explanation:
we know that
The <u>additive identity</u> property says that if you add a real number to zero or add zero to a real number, then you get the same real number back
so
Let
a -----> a real number
a+0=0+a=a
therefore
a+0= a
Answer:
478/16
Step-by-step explanation:
28x8=224
224+15=239
8x2=16
239x2=478
478/16
A^2 - b^2 = (a - b)(a + b)
169x^2 - 64 = (13x - 8)(13x + 8)
Answer:
1.) Mass divided by volume
Step-by-step explanation:
The definition of density is "mass per unit volume." It is calculated by dividing mass by volume.
