thibeauxkristy
04.06.2020 •
Mathematics
The rectangle has a length of 4x+3 and a width of 3x. Show your work.
A. Find the perimeter.
B. Find the area.
C. Find the perimeter and area if x = 8.
Solved
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Ответ:
A. P = 14x+6
B. A = 12x^2 +9x
C. P = 118; A = 840
Step-by-step explanation:
A. The perimeter is twice the sum of length and width:
P = 2(L +W) = 2((4x+3) +(3x)) = 2(7x +3)
P = 14x +6 . . . . the perimeter of the rectangle
__
B. The area is the product of length and width:
A = LW = (4x +3)(3x)
A = 12x^2 +9x . . . . . the area of the rectangle
__
C. When x = 8, these values are ...
P = 14·8 +6 = 118 . . . . . perimeter in units
A = 12·8^2 +9·8 = 768 +72 = 840 . . . . . area in square units
Ответ:
500 people
Step-by-step explanation:
40 = 8%
? = 100%
8 percent of 500 is 40.