Answer:
80 × 30 = 2,400
Step-by-step explanation:
We can easily round 79 up to 80 and round 31 down to 30. This would make our expression 80 × 30, which is much easier to compute. We just take 8 × 3 (which is 24) and add two zeros onto the end of the number. This yields us an answer of 2,400 which is very close to the actual multiplication of 79 × 31 which is 2,449 (only 49 more than our estimation).
Answer:
for the system of linear equations, the answer would be (-8/3,2) and only have one solution
Parallel lines have no solution
Step-by-step explanation:
It's 13.5 because you put them in order and then you have 13 and 14 you add them together and then divide by 2
Answer:50r2−30r
Step-by-step explanation:
got it of the web.
