The answer is 8.45498149331, you can round it to the nearest thousandths place though, too.
The x-coordinate is 2 and y-coordinate is 12.
Substitute 2 into x then check if y is equal to 12.
D is the answer since y = (2) - 10 = -8, not 12.
A) False. Some rectangles do not have all four sides that are the same length.
B) False. If the four angles are not all 90 degrees, then it is a non-rectangular parallelogram.
C) True. A square is always a rectangle since a square has four right angles. The same isn't always true in reverse (as choice A mentions). A square is also always a rhombus.
D) False. It is possible to draw a four-sided figure that does not have four right angles.
Answer is choice C
Answer:
The solution set is (-20/9, -95/9)
Step-by-step explanation:
To solve using the substitution method, start by solving the second equation for y.
1/3y = 7/3x + 5/3
y = 7x + 5
Now that we have this, we can plug it in for y in the first equation. Then we can solve for x.
-4x - 2(7x + 5) = 30
-4x - 14x - 10 = 30
-18x - 10 = 30
-18x = 40
x = -20/9
Now that we have the value of x, we can solve for y by inputting the x value into either equation.
-4x - 2y = 30
-4(-20/9) - 2y = 30
80/9 - 2y = 30
80/9 - 2y = 270/9
-2y = 190/9
y = -95/9