Answer:
$760
Step-by-step explanation:
First off we need to define the amount of feet per square yard.
(3feet= 1yard)
(9 squarefeet = 1 square yard)
Now we find the total area of Amanda's living room.
12 x 15 = 180 sq feet
Now that we have the total area of Amanda's living room, we then divide the total to the number of square feet in a square yard.
180 / 9 = 20 square yards.
Amanda will need a total of 20 square yards to carpet her living room. Now we simply multiply the amount of each square yard to the total amount of square yards that Amanda needs.
38 x 20 = $760
Answer:
26cm²
Step-by-step explanation:
Perimeter
2x - 4 + 5x - 13 + x + 9 = 40
8x - 8 = 40
8x = 40 - 8
8x = 32
x = 4
Sides of the triangle
Height = 2x - 4 = 2 x 4 - 4 = 4cm
Hypotenuse = 5x - 13 = 5 x 4 - 13 = 7cm
Base = x + 9 = 4 + 9 = 13cm
Area of triangle
= 1/2 x base x height
= 1/2 x 13 x 4
= 26cm²
Hope this helps
Answer:
The inverse of a square matrix A, denoted by A-1, is the matrix so that the product of A and A-1 is the Identity matrix.
Step-by-step explanation:
