Answer:
C
Step-by-step explanation:
replace the 1st equation into the 2nd one for y
-8x-4(2x-5) = -20
-8x-8x+20 =-20
-16x+20 = -40
-16x=-40
x = 5/2 = 2.5
y = 2x-5 - 2(2.5) - 5 = 5-5 = 0
one solution (2.5,0)
Given:
Area of rectangle =
sq. feet.
Width of the mirror =
feet.
To find:
Whether it will fit on the wall whose length is 5 foot.
Solution:
We know that, area of a rectangle is


Substituting the given values, we get






So, length of mirror is 4.75 feet which is less than 5 feet.
Therefore, the mirror will fit on the wall.
<span>(3)(8) = (8)(3)
answer is </span><span>A. Commutative</span>