Answer: 315 square feet is needed for carpeting and It costs $2835.
Step-by-step explanation:
Since we have given that
Length of room = 21 feet
Width of room = 15 feet
As we know the formula for "Area of room ":
Hence, 315 square feet is needed for carpeting.
Cost of per square foot of carpeting = $9
Total cost will be
Hence, it costs $2835.
x= -8
x=-5
x=2
x = 10
(x-3)(x-5)=35
Multiply the brackets together
x*x-5*x-3*x-3*5
x^2-8x+15=35
Move +35 to the other side. Sign changes from +35 to -35
x^2-8x+15-35=35-35
x^2-8x-20=0
(x-10)(x+2)=0
x-10=0 x+2=0
Move -10 to the other side. Sign changes from -10 to +10
x-10+10=0+10 x+2-2=0-2
x=10 x=-2
Answer: x=10
Answer:
centimeter square.
Step-by-step explanation:
We are given that,
Number of rows having squares = 5
Length of each square = x cm
As, we know,
Area of a square =
Thus, area of 1 square =
As there are x squares in each row, we get,
Area of 'x' number of squares = =
Also, as there are 5 rows.
Thus, total area of 5 rows = = centimeter square.
Hence, the required area is centimeter square.