How do you solve 5x + y=9 10x-7y=-46 how do you solve -4x+9y=9 x-3y=6

What is the relationship between all triangles that can be drawn given the same three angles

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?