If 3 is the bold number then the answer is D. <span>#TeamAlvaxic</span>
The angles of a triangle always equal to 180 degrees.
Knowing this, you can solve this by this equation
Angle A + Angle B + Angle C = 180
43 + 85 + Angle C = 180
Angle C = 180 - 43 - 85
Angle C = 52
Answer:
$36
Step-by-step explanation:
8a+5c
8(2)+5(4)
16 + 20
36
Answer: 120 cm².
Step-by-step explanation:
1. To solve this problem you must apply the formula for calculate the area of a triangle, which is:

Where <em>b</em> is the base and <em>h</em> is the height of the triangle.
2. Then, when you substitute the values given in the problem you obtain:

3. You know that the shape is made of 12 right triangle of equal size, therefore, multiply the area obtained by 12.
4. Then the area of the shape is:

Step by step
distribute= 4y-12+20y
combine like terms =24y-12
therefore answer is C