A) 2L + 2W = 48
B) L * W = 140
B) W = 140 / L
Inputting this to equation A)
A) 2L + 2*(140 /L) = 48
L + 140/L = 24
Multiplying both sides by "L"
L² + 140 = 24L
L² -24L +140 = 0
(L -10) * (L-14) = 0
L= 10
L = 14
If length = 10 then width =14
If length = 14 then width = 10
Answer:
a = 17, b = 6
Step-by-step explanation:
Sides GF and GH are congruent, so we have ...
GF = GH
30 = 2a -4 . . . . substitute given values
15 = a -2 . . . . . divide by 2
17 = a . . . . . . . . add 2
Sides FJ and HJ are congruent, so we have ...
FJ = HJ
3b +6 = 24 . . . . substitute given values
b +2 = 8 . . . . . . divide by 3
b = 6 . . . . . . . . . subtract 2
The values of a and b are (a, b) = (17, 6).
6(x+1)=24
6x+6=24
6x=24-6
6x=18
6x/6=18/6
x=3
Answer:
344 m^2
Step-by-step explanation:
Area of the 2 triangles: (2)(1/2)(10)(5)=50
Area of three sides:3(7)(14)=294
294+50=344
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