Answer:
Step-by-step explanation:
x + 2 = 0 (subtract 2 from both sides)
x = 0 - 2
x = -2 (plot this on a number line)
<span>48m = 16(3m)
80n = 16(5n)
so
</span><span>48m - 80n = 16(3m - 5n)</span>
For #7 it would be 321,000 and for #8 it would be 0.00159
Answer and explanation:
To find : Calculate to the nearest 1/10th foot the length of the side of a 5th, 10th, and 100th acre square plot.
Solution :
The area of the square is given by,
where s is the side length.
We know, ![1 \text{ acre}=43560\ ft^2](https://tex.z-dn.net/?f=1%20%5Ctext%7B%20acre%7D%3D43560%5C%20ft%5E2)
1) The area of square plot is 5 acre.
Area in foot square is ![A=5\times 43560=217800\ ft^2](https://tex.z-dn.net/?f=A%3D5%5Ctimes%2043560%3D217800%5C%20ft%5E2)
Substitute the value in the formula,
Side nearest to 1/10th foot is 466.7 foot.
2) The area of square plot is 10 acre.
Area in foot square is ![A=10\times 43560=435600\ ft^2](https://tex.z-dn.net/?f=A%3D10%5Ctimes%2043560%3D435600%5C%20ft%5E2)
Substitute the value in the formula,
Side nearest to 1/10th foot is 660.0 foot.
3) The area of square plot is 100 acre.
Area in foot square is ![A=100\times 43560=4356000\ ft^2](https://tex.z-dn.net/?f=A%3D100%5Ctimes%2043560%3D4356000%5C%20ft%5E2)
Substitute the value in the formula,
Side nearest to 1/10th foot is 2087.1 foot.