Answer:
The ratio of the number of dogs to the number of cats is 3:4.
Step-by-step explanation:
Simplify
12:16 = 3:4
Divide each number by 4.
First distribute the negative to the second equation which would give you:
25x^2 - 14xy + 4 -7x^2 + 9y + 2xy + 7
Since addition is commutative. you can now just add like terms.
18x^2 - 12xy + 9y + 11
Answer: imagine not knowing the answer
Step-by-step explanation:
Selling price of app per user = $10 per month
Total no. of user in first month = 10
To tal no. of user added per month = 7
We have to find how much money is earned in one year
So the formula is n/2 * (2a +(n-1)d)
Here we have n = 12 which is total no. of months
a = 100 , which is money earned in one month
d = 70 , which is increase in money earned per month
So money earned in a year comes out to be 5820
