7. An investment account pays 3.9% interest compounded semi-annually. If
1 answer:
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Answer:
<em>Both 16 and 1 are squares. This suggests using the formula for the difference of squares. Answer link.</em>
Step-by-step explanation:
Every time you have a difference in the format of
A2−B2 you can factor as (A−B)(A+B).
Then you have to identify if your quantity is the difference of two squared quantities.
It is. In fact we can write it as:
16x2−1=(4x)2−12
Then we can apply our rule
Answer:
y = - x -
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = x + 1 ← is in slope- intercept form
with slope m =
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
= -
, thus
y = - x + c ← is the partial equation
To find c substitute (- 8, 2) into the partial equation
2 = + c ⇒ c = 2 -
= -
y = - x -
← equation of perpendicular line