Answer:
Approximate weight of cell phone is between 100 gm to 200 gm.
1 Pound = 0.45359237 Kilograms
= 0.4545 kg
2.8 pound = 2.8 × 0.4545
= 1.2727 Kg
It is given that weight of cell phone is pounds, means Kilograms.
Which is equal to, grams.
Because, 1 Kilogram = 1,000 gram
If, n=0
Weight of cell phone = 1272.7 grams=1.2727 Kg
when, n=1
Weight of cell phone = 12727 grams=12.727 Kg
n= -2,
Weight of cell phone = 12.727 grams
n=- 3
Weight of cell phone = 1.2727 grams
None, of the weights are appropriate weight of cell phone.Neither of four options provided here is true.
1. (The base on top is 15 ft.
To find the base on the bottom you have to first find the length of the right side of the triangle. 7 - 4 = 3. Then, square both sides of the triangle and add them together. 15^2 + 3^2 = 234
Next take 234 and find its square root = 15.3. The bases of the trapezoid are 15 and 15.3)
2. (Both bases and the height.)
3. (2l + 2w does not belong, all of the equations are formulas for area but that one is perimeter)
When multiplied, the product is -40/54. When you reduce it, you get -20/27.
I: x-3*y=12
II: 2*x+6*y=60
add I*2 to II:
2*(x-3y)+2x+6y=2*12+60
2x-6y+2x+6y=24+60
4x=84
x=21
insert x=21 into I:
21-3y=12
9-3y=0
9=3y
3=y
is the only solution (21,3), sou you probably have another option which you didn't copy :)