I just need a little help
2 answers:
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Functions can be represented on graphs
The value of f(k + 3) is 0
Given that:
From the graph, we have:
So, by comparison:
Substitute 2 for k in f(k + 3)
From the graph, f(5) = 0
So, we have:
Hence, the value of f(k + 3) is 0
Read more about functions and graphs at:
Compound interest formula is 
where A is the amount after T years, P is the principal amount you start with, R is the interest rate, and N is the amount of compounding periods. Semi-annually means we only have 2 compounding periods.
Now plug in:
which becomes 
. Plug this into your calculator.
A = 5788.125. Because it's money, you would round to the nearest penny.
A = 5,788.13 dollars
Now plug in:
A = 5788.125. Because it's money, you would round to the nearest penny.
A = 5,788.13 dollars
Given:
A figure of an isosceles trapezoid with bases 18 and 24, and the vertical height is 4.
To find:
The legs of the isosceles trapezoid.
Solution:
Draw another perpendicular and name the vertices as shown in the below figure.
From the figure it is clear that the AEFD is a rectangle. So,
Since ABCD is an isosceles trapezoid, therefore in triangle ABE and DCF,
(Legs of isosceles trapezoid)
(Vertical height of isosceles trapezoid)
(Right angle)
(HL postulate)
(CPCTC)
Now,
Using Pythagoras theorem in triangle ABE, we get
Taking square root on both sides, we get
Side length cannot be negative. So, .
Therefore, the length of legs in the given isosceles trapezoid is 5 units.
