Answer ASAP!

Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are added together, the x term is eliminated?

1/5 x + 3/4y = 9
2/3 x - 5/6y = 8

1. –10 times the first equation and 3 times the second equation
2. 10 times the first equation and 3 times the second equation
3. –3 times the first equation and 5 times the second equation
4. 3 times the first equation and 5 times the second equation

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?