Solve for the system of liner equations by substitution.
x+4y= -1
-3x-14=y

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers