Answer:
9
Step-by-step explanation:
a² +b²=c²
a²+40²=41²
a²=41²-40²
a²= 81

a=9
Word form:
<span>ninety billion, one hundred seventy-five million, eighty-seven thousand, three hundred nine
Number form: view attachment</span>
Here are the rates of the trains:
(n represents train A's speed)
A: n
B: n + 10
We know it is 5 hours, and total distance, so:
5(n) + 5(n + 10) = 1250
5n + 5n + 50 = 1250
10n = 1200
Divide:
n = 120
One train goes 120, the other goes 130
Noun: Molly- Proper, it’s the name of 1 particular thing(usually starts with a capital)
Noun: Dog- common (part of a group)
Possessive nouns show possession, examples: the dog’s bone, the girl’s bike
Hope you can use this for the rest of the sheet!