Answer:
--- Slope intercept
--- Point slope
Step-by-step explanation:
Given
Perpendicular to
Required
Determine its equation
The general form of an equation is:
Where
By comparison:
Next, we calculate the slope of L.
Because L is perpendicular to , the relationship between their slopes is:
Substitute 4 for m
The equation of L in slope intercept form is:
Substitute -1/4 for m
In point slope form, we have:
Substitute -1/4 for m
Answer:
You should invest $2000 at 5% simple interest in order to earn $100 interest in 12 months.
Step-by-step explanation:
Using the formula
where
I = Interest earned
P = The principal (let say in $)
r = The Interest Rate
t = time
Given that
Thus,
100 = P × 5% × 1
100 = P × 5/100 × 1
100 × 100 = P × 5
10000 = P × 5
P = 10000/5
= 2000 (let say in $)
Thus, you should invest $2000 at 5% simple interest in order to earn $100 interest in 12 months.