I only know the first part (the expression which represents the amount Rita spent at the mall)
18.54x + 48
Answer:
4
Step-by-step explanation:
If you have a scientific calculator you can easily plug this into the calculator and get the answer: Below I will show you the steps to get the answer
1. (distribute the - sign to the number 2)
2. (Multiply -2 and -1)) (also subtract 3-1)
3. (Multiple -2 * -2 * -2) ( multiple 2*2)
4.
5. 4
The measure of ∠FDE = 18°
<u>Explanation:</u>
A Pentagon has 5 sides and is made of 3 triangles
So, sum of the interior angles of the triangle = 180°
Therefore, the total interior angle of a regular pentagon = 3 X 180° = 540°
A regular pentagon will have all its angle equal
All the five angles would make 540°
Let the measure of one angle = x
So,
5x = 540°
x = 108°
Therefore, the measure of each angle of a pentagon is 108°
From the diagram,
∠AED + ∠FED = 180°
∠AED = 108° as it is one of the sides of the pentagon
So,
108° + ∠FED = 180°
∠FED = 72°
In ΔEFD,
∠FED + ∠EFD + ∠FDE = 180°
72° + 90° + ∠FDE = 180°
∠FDE = 18°
Therefore, the measure of ∠FDE = 18°
Answer:
A = 1133.54 cm^2
Step-by-step explanation:
Remember, our diameter is twice the length of our radius.
Diameter = 2 * Radius
Our diameter is 38 cm, meaning our radius is 19 cm.
A = pi * (r^2)
A = 3.14 * (19cm)^2
A = 3.14 * 361cm^2
A = 1133.54 cm^2
Cant see it can yo take it above