The best and most correct answer among the choices provided by your question is the second choice or letter B "20".
The current area is 120(80)=9600 and he want to expand it by 4400 so that the new area will be 9600+4400=14000
14000=(120+x)(80+x)
14000=9600+200x+x^2
x^2+200x-4400=0
x^2-20x+220x-4400=0
x(x-20)+220(x-20)=0
(x+220)(x-20)=0, since x is an increase it must be greater than zero so
x=20ft
(120+20)(80+20)=14000ft^2
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When you subtract a negative number, add the values.
245+57=302
Final answer: 302
Given:
Larger Triangle : base = 58 m ; height = x
Smaller Triangle: base = 26 m; height = 21.3 m
x:58 = 21.3:26
26x = 58*21.3
26x = 1,235.4
x = 1,235.4 / 26
x = 47.515
The river is 48 meters wide.
To find the area of a rectangle, you use this equation/formula:
A = l x w
Since you know the area and the length, you can plug it into the equation:
A = l x w [A = 96 in² l = 8 in]
96 = 8 x w
To find the width, you divide 8 on both sides
12 = w
The width is 12 inches
To find the perimeter of a rectangle, you add all of the sides together:
P = l + l + w + w or P = 2l + 2w
Since you know the length and width, you can plug it in:
P = 2l + 2w
P = 2(8) + 2(12)
P = 16 + 24
P = 40 in
<span>x+5=16
Subtract 5 on both sides to cancel out the positive 5 and to get the variable x on one side alone.
Final Answer: x= 11</span>