Answer:
1. 5
2. 8
3. 40
Step-by-step explanation:
So rounding the factors is an easy way to estimate the product of 5.3 and 7.9.
The real answer is 41.87 and 40 is a reasonable approximation.
40 ≈ 41.87
Answer:
4.52
Step-by-step explanation:
12/2.65= 4.5283018868
hundredths is the 2nd place after the decimal. so get rid of everything after that
4.52
Answer:
163
Step-by-step explanation:
inside of the pentagon it adds up to 540 degrees so u add all those angles together and take it away from 540
Answer:
3/5 , 0.6, 60%
3/4 , 0.75, 75%
4/5 , 0.80, 80%
9/10 , 0.9, 90%
and the last one should be 2/2 , 1. , 100%
Answer:
31 is a prime number.
How to tell if a number is prime: estimate the square root. In this case, we know the square root of 31 is between 5 and 6 and it isn’t divisible by either of those. If it is divisible by a number higher than it’s square root, the other factor must be lower. Is it divisible by 4 or 2? no, because it isn’t an even number. It’s not divisible by 3, because there’s a remainder of 1 if you try. You’ve eliminated all numbers less than the square root, so it is prime
