Addition: 70 + 80 = 150. You round 65 up because the ones digit is greater than and the same with 77.
Multiplication: Round up since both ones digits are bigger than 5. 70 x 80= 5600.
The answer is: 2a^4 - 3a^2 b - 5b^2
Answer:
1 to 100,000
Step-by-step explanation:
1 km is equivalent to 100,000 cm.
Step-by-step explanation:
A, x=-13 or x=21.
-13 - 4 (-13+ -4) is equal to -17. Due to absolute value bars, it is now positive 17.
21-4 = 17
