Acalculator showed the answer to a multiplication problem as 2.8e–4.
which expression is equivalent to 2.8e–4?

2.8 x 104

2.8 x (-4)

2.8¯4

2.8 x 10¯4

Ill mark the brainliest if you me with the these three questions 7,8,9

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?