First convert the first equation to combine like terms. Then set your equations up as an addition problem. You want at least one of your variables (y) to be of opposite values so the will cancel out to leave you with just one variable (x). Plug in 1/3 for the x into one of the equations to solve for y. Then write as an ordered pair.
Answer:
Step-by-step explanation:
Givens
Lake Eyre (Austrialia) = 15 meters below sea level = - 15
Pensacola (Florida) = + 12 metes above sea level
Solution
Distance between = Pensacola - Lake Eyre
Distance between = 12 - - 15
Distance between = 27
Answer
27 meters.
To find the remaining amount of money on the gift card you would substitute 8 in for the variable 't' and solve for g.
g= -9(8) + 100
g = -72 + 100
g = $28
Answer:
first angle is 20, 2nd is 120, 3rd is 40.
Step-by-step explanation:
with these words, "20 less than a number, Three
times the number, is the number." We can set up the equation x-20+3x+x = 180. combine like terms and we get 5x-20=180. add 20 to both sides to get 5x=200 then divide 200 by 5x to get x = 40. We can then plug 40 into each of the expressions, x-20, 3x, x, to get our angles.
