20/110 because there's 20 kids in her third period but 110 overall hope I helped in time
7 would probably end up being 6 12/12 if I am doing his correctly.
Answer:
1 Expert Answer
Let x and y be the two numbers. Then by assumptions we have x+y=30 and x-y=20. Hence, y=x-20 and by plugging this into the first equation we obtain x+x-20=30 or 2x=50 or x=25 and y=5
Step-by-step explanation:
So, divide 30 by 2 . That gives you 15 for x, 15 for y. Now, you have difference of six, divide by two, that equals 3.
Answer:
(x+5)(x+7)
Step-by-step explanation:
Let's factor x2+12x+35
x2+12x+35
The middle number is 12 and the last number is 35.
Factoring means we want something like
(x+_)(x+_)
Which numbers go in the blanks?
We need two numbers that...
Add together to get 12
Multiply together to get 35
Can you think of the two numbers?
Try 5 and 7:
5+7 = 12
5*7 = 35
Fill in the blanks in
(x+_)(x+_)
with 5 and 7 to get...
(x+5)(x+7)
Answer:
(x+5)(x+7)
