Probly the first one it looks right
Answer:
- 
Step-by-step explanation:
The reciprocal of a number n is 
The negative reciprocal is the negative of this, thus
reciprocal of 2 is - 
To the nearest thousand, population is 24,327,000
that means the population could range between 24,326,500 and 24,327,499
Answer:
square root of 1024 is 32
Answer:
9
Step-by-step explanation:
120=4x=6+7x+15
120=11x+21
-21 -21
99 ÷ 11x
AB=9