The area of the figure is: 57 mm²
<h2>Step-by-step explanation:</h2>The area of figure is the sum of the area of rectangle (with dimensions 9 mm × 5 mm) and the second rectangle ( with dimensions 3 mm × 4 mm )
We know that the area of rectangle with dimensions a×b is ab square units.
Hence,
The area of rectangle with dimensions 9 mm×5 mm is: 45 mm²
and the area of rectangle with dimensions 3 mm×4 mm is: 12 mm²
Hence, the total area of figure is:
45+12= 57 mm²
Answer:
.
Step-by-step explanation:
We are given and
are zeros of the polynomial
.
We want to find the value of if
.
Lets use veita's formula.
By that formula we have the following equations:
(-b/a where the quadratic is ax^2+bx+c)
(c/a)
Let's simplify those equations:
If and
, then
.
Let's solve this for k:
Subtract 6 on both sides:
Find a common denominator:
Simplify:
.