Answer:
n=-2
Step-by-step explanation:
You do the reverse of -8 which is +8. -10+8=-2. n=-2
Answer: Option 'a' is correct.
Step-by-step explanation:
Since we have given that
Probability that he jumps a hurdle = 
Total number of hurdles = 10
Probability that he knocks down = 
So, Probability (knocks down all hurdles ) is given by

Hence, Option 'a' is correct.
Answer:
it is . what it is lol
Step-by-step explanation:
Answer:
57 square inches
Step-by-step explanation:
First consider that a 45 degree sector of a circle is 45/360 of the area of the full circle from which it is cut. This comes out to 1/8 of the full circle area.
The area of a circle of radius 12" is A = π(12 ")^2, or A = 144π.
The area of the sector in question is 1/8 of that, or
A = (1/8)(144π), or A = 18π square inches, or approximately 57 square inches.