30 Answer:
Step-by-step explanation:SEARCH IT UP
57 miles because of they are driving 38 miles per hour that means in 1 hour they drive 38 miles. So if they drove for an hour and a half you take 38 and half of 38( which is 15) and you add them together.
Answer:
no they are not because 11, 14 is the only one that has a vertices
Step-by-step explanation:
4. Let the numbers be x - 2, x, and x + 2, where x is an odd number.
2(x² - 4) - 4x = (x + 2)² + 21
2x² - 8 - 4x = x² + 4x + 4 + 21
2x² - 4x - 8 = x² + 4x + 25
x² - 8x - 33 = 0
(x - 11)(x + 3) = 0
x = 11, or -3
When x = 11, x - 2 = 9, x + 2 = 13
When x = -3, x - 2 = -5, x + 2 = -1
Explanation: You are on the right track. However, rather than having three unknown variables, try to reduce your working out to one unknown variable. Since you know they are consecutive odd numbers, you can simply let x be the middle term and the other two be + and - 2, provided x is an odd number.
That will reduce your variable issues, and helps as the first and third provide a difference of two squares, and this works out very nicely.
Q5: is essentially the same process. Let your variables be something in the form of one unknown variable, and you should be okay from there. Let me know if you're stuck.
Solution :
It is given that Little Snail is going to visit one of his friend at the pond which is 3 miles away.
When the snail crawls 1/2 of a mile per day, it will take him, 
= 6 days to get to the next pond.
When the snail crawls 1/3 of a mile per day, it will take him, 
= 9 days to get to the next pond.
When the snail crawls 1/4 of a mile per day, it will take him, 
= 12 days to get to the next pond.
When the snail crawls 3/4 of a mile per day, it will take him, 
= 4 days to get to the next pond.
When the snail crawls 2/3 of a mile per day, it will take him, 
= 4.5 days to get to the next pond.
