Two numbers have a sum of 7. When the smaller number is subtracted from twice the larger number, the result is 20. Which is the following is the larger number. 11
9
15
12
Which is it?

9

Step-by-step explanation:

according to the condition it is possible to make up a system of two equations (if to suppose 'l' - the larger number and the 's' - is the smaller one):

1. 'two numbers have a sum of 7' means s+l=7;

2. 'When the smaller number is subtracted from twice the larger number, the result is 20' means 2*l-s=20.

3. the system of two equations is:

4. the larger number is 9.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

is this part of a question or something