48 x 8.25% = 3.96
Now add 3.96 + 48
Answer 51.96
Answer should be 1.85 x 10^18
First
angle in front of c is 30°, so hypotenuse is equal to 2c
it's right triangle, so let's use Pythagorean theorem\

Second
b - the base of the triangle, angles at the base are equal ⇒ cathets are equal
it's right triangle, so let's use Pythagorean theorem

5=(-4)x-2. Hope this helps
Calculate mean:
4+3+4+5+6+6+8+4=40
40/8=5
Calculate MAD:
1+2+1+0+1+1+3+1=10
10/8= 1.25
Final answer: 1.25