It gets you closer to your answer.
Ex: 11×2-- Round 11 to 10 and then multiply and get 20. But if you get some answer like 50, you know it is wrong. But the answer is 23
Answer
Step-by-step explanation:
mathaway will help !
The perimeter is all sides length added together. You can make an equation:5+5+x+x where x is the length.
5+5=10 18-10=8 There is two sides so you do eight divided by two
The length is 4
Answer:D and E are correect
Step-by-step explanation:
Answer:
7,24,25
explanation:
it is in the pythagorean triples
