a regular hexagon has 6 sides so divide the perimeter by number of sides to find the length
15/6 = 2.5 cm
Answer:
f(2a−1)=7a−13
7(2a−1) − 13
14a − 7 − 13
14a − 20
Step-by-step explanation:
replace a with f(2a − 1)
distribute the bracket
combine -7 and -13 because they are the like terms here.
Answer:
a=10.8; c=4.3
Step-by-step explanation:
The sum of all the angles in a triangle is 180 degrees.
Two of the angles are given as 40 deg and 120 deg.
Subtract the measures of both from the sum to get the last angle:
180-40-120=20; ∠C=20°
Using Law of Sines: 
Answer:
<h3>
Evaluating an expression</h3>
Unlike an equation, expression does not have an equal sign.
Example
(x² - 4²) / (x + 2)
So, by evaluating an expression it means to simplify the expression. Let's take a look at the example again
(x² - 4²)
= (x + 2)(x - 2) / (x + 2)
= (x - 2)
<h3>Solving an equation</h3>
Solving an equation involves finding an unknown value given in the equation. It contains an equal to sign (=) so, it result in a solution.
Example
(x² - 4²) / (x + 2) = 0
(x + 2)(x - 2) / (x + 2) = 0
(x - 2) = 0
x = 2
The answer is 50 !
50/2 = 25 + 8 = 33
