Home Mathematics 2. Choose the correct term: Theis the decrease from theoriginai price of an item to its sale price 2. Choose the correct term: Theis the decrease from theoriginai price of an item to its sale priceMathematics Pagezbills18October 22, 20211 Comment2. Choose the correct term: The is the decrease from the originai price of an item to its sale price
1)The dimensions you are solving forlength of the rectangular roomwidth of the rectangular room2)Now let the length be L and the width be w thenthe perimeter is 2L+2W 2L+ 2W = 24(1)Also, "Twice the length decreased by three times the width is 4 feet" can be written as2L - 3W = 4(2)Solving (1) and (2) by elimination method, by subtraction2L+ 2W = 242L - 3W = 4(-) (-) (-)0L +5W = 205W = 20W = 4(3)Now by substitution method,substituting (3) in(1) 2L+ 2(4) = 242L + 8 = 242L = 24 -82L = 16L = 8Substituting in the original equation and rechecking the perimeter=2(8) + 2(4)=16 + 8= 24Thus the found dimensions are correct3)The length of the room is 8 feet and the width of the room is 4 feet.Reply
1)The dimensions you are solving for
length of the rectangular room
width of the rectangular room
2)Now let the length be L and the width be w then
the perimeter is 2L+2W
2L+ 2W = 24(1)
Also, "Twice the length decreased by three times the width is 4 feet" can be written as
2L - 3W = 4(2)
Solving (1) and (2) by elimination method, by subtraction
2L+ 2W = 24
2L - 3W = 4
(-) (-) (-)
0L +5W = 20
5W = 20
W = 4(3)
Now by substitution method,substituting (3) in(1)
2L+ 2(4) = 24
2L + 8 = 24
2L = 24 -8
2L = 16
L = 8
Substituting in the original equation and rechecking the perimeter
=2(8) + 2(4)
=16 + 8
= 24
Thus the found dimensions are correct
3)The length of the room is 8 feet and the width of the room is 4 feet.