Answer: x=3.6; y=-2.5
Step-by-step explanation:
To solve this pair of equations, we can use elimination method.
5x+4y=8
10x-4y=46
Add both equations together to cancel out 4y.
15x=54 [divide both sides by 15]
x=3.6
Now that we know x, we can plug it back into any equation to find y.
5(3.6)+4y=8 [multiply]
18+4y=8 [subtract both sides by 18]
4y=-10 [divide both sides by 4]
y=-2.5
Now, we have x=3.6 and y=-2.5.
Answer: C. (25,10)
Step-by-step explanation:
Answer: $108.75
Step-by-step explanation: 18.50+3.25=21.75 Per Person 21.75x5=108.75
Answer:
5(x + 2) = 11
x = 0.2
Step-by-step explanation:
5(x + 2) = 11
x + 2 = 11/5 = 2.2
so x = 0.2
Answer:
Slopes of parallel lines are equal
Step-by-step explanation:
On a coordinate plane, quadrilateral ABCD is shown. Point A is at (-2, -2), point B is at (-3, 4), point C is at (2, 2), and point D is at (3, -4).
The slope of the line segment BC is:
The slope of the line segment AD is:
The slope of the line segment CD is:
The slope of the line segment BA is:
Because the slopes of parallel lines are equal. Therefore, ABCD is a parallelogram because both pairs of opposite sides are parallel.