I would solve the first equation for x and then sub that value into x in the second equation. That's the easiest way. x - 2y = 3 solved for x is x = 2y+3. Now sub that in for x in the second equation: 5(2y+3)+3y=2 and 10y + 15 + 3y = 2. 13y = -13, and y = -1. Now sub that y value into either equation to solve for x: x = 2(-1) + 3 gives us an x value of x = 1. Therefore, your solution to this system is (1, -1), first choice above.
Answer:
Step-by-step explanation:
<u><em>Blue Car:</em></u> (31 1/2 miles)/(1 1/4 gallons)
(63/2) miles / (5/4) gallons
(63/2)*(4/5) = <u>25.2 miles/gallon.</u>
<u><em>Red Car:</em></u> (27 1/5 miles)/(4/5 gallon)
= <u>34 miles/gallon.</u>
The Red Car will travel the furthest.
Answer:
B
Step-by-step explanation:
Since equalateral all angles are 60. 60 - 69 = -9.
Answer: The last one
Step-by-step explanation: The data is all between 4 and 7 and there are no gaps. The max is 7 dollars as stated.
Answer:
C (1,3)
Step-by-step explanation:
The only choice that appears on the line is 1 on the horizontal or X axis and 3 on the vertical or Y axis.
