eff can paint 28 square feet every 30 minutes. Angela can paint 50 square feet every hour. Who can paint faster, and by how many
1 answer:
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In case you're not already aware, the expression is called the "difference quotient" and represents the average rate of change of a function
over an interval
.
For the function , by substituting
we get
Then the difference quotient is
where the last equality holds as long as .
Answer:
1. always
2. sometimes
Step-by-step explanation:
Two lines are coplanar if they lie in the same plane or in parallel planes. There is ALWAYS a plane which contains two parallel lines (see first attached image for details).
Two lines that lie in parallel planes are sometimes parallel. For example, see at second image. Planes and
are parallel. Consider pair of lines
and
- they are parallel, but if you consider the pair of lines
and
, you can see they are not parallel.
Answer:
points are( 6,2),(7,5) and (3,8)
Step-by-step explanation:
X,y changes into y,-X
