<u>ANSWER</u>
B. (5.75, 0)
<u>EXPLANATION</u>
If the point P(x,y) partitioned
and
in the ratio m:n, then
If the coordinates are A(−4,12) and B(9,−4), then:
The correct choice is
A company sold 3,000 computers in one month, but 12 were returned. If 3,500 were sold the next month, the company would expect 1
4 to be returned.
What is a valid proportion to represent the problem?
What is a valid proportion to represent the problem?
2 answers:
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Answer:
a. f (x) < 0 for x ∈ (-∞ ,-3)
b. f (x) > 0 for x ∈ (-3,-2)
c. f (x) < 0 for x ∈ (-2,2)
d. f (x) > 0 for x ∈ (2,3)
e.f (x) < 0 for x ∈ (3,∞)
Step-by-step explanation:
Here, the given function is:
Now, to check for the sign of f(x) at x = k, put the value of x from the given interval.
We get:
<u>a. (-infinity, -3) </u>
put k = -4 from the given interval
We get
⇒ f (x) < 0 for x ∈ (-∞ ,-3)
b. (-3, -2)
put k = -2.5 from the given interval
We get
⇒ f (x) > 0 for x ∈ (-3,-2)
c. (-2, 2)
put k = 0 from the given interval
We get
⇒ f (x) < 0 for x ∈ (-2,2)
d. (2, 3)
put k =2.5 from the given interval
We get
⇒ f (x) > 0 for x ∈ (2,3)
e. (infinity, 3)
put k = 4 from the given interval
We get
⇒ f (x) < 0 for x ∈ (3,∞)