Answer:
Both answers will give an area of 2400 ft2
but with x=60 we have lawn dimensions -60 ft by -40 ft so this is out
x = 10 ft width for the sidewalk
Check: New lawn dimensions
(80-2x)(60-2x) = 60(40) = 2400 ft^2
Step-by-step explanation:
Draw a diagram:
We have a rectangle inside a rectangle.
The larger outside rectangle is the original lawn: 80ft by 60 ft with area 4800 ft2
The smaller inside rectangle is (80-2x)by(60-2x) where x is width of the new sidewalk.
Area of new lawn is 2400 ft^2
(80-2x)(60-2x) = 2400
4800 - 160x - 120x + 4x2 = 2400
4x2 - 280x + 2400 = 0
Factor out a 4
x2 - 70x + 600 = 0
(x-60)(x-10) = 0
x = 60 ft or x = 10 ft
Answer:
Step-by-step explanation:
#1
SA=2(LW+LH+WH)
SA=2(5+4+3)
SA=2(12)
SA=24
#2
SA=bH+2LS+bL
SA=4+2x7+8
SA=4+14+8
SA=25
#3
SA=2(LW+LH+WH)
SA=2(13+17+2)
SA=2x32
SA=64
(the rest of the shapes
i can't see but you can use that formula to do it <3 GL!)
(15--1)/(3--1)=16/4=4
The answer is 4
Answer:
i cant see it??
Step-by-step explanation:
Answer:
<h2>
10%</h2>
Solution,
Measured value= $ 13200
True value = $ 1200
Now,
Percentage error:
Hope this helps...
Good luck on your assignment..
