7. Simplify the expression. Write the answer using scientific notation. (0.4x10-6)(0.7x10-2)
O 2.8 x 10-7
O 2.8 x 10-8
O 0.28 x 10-9
O 2.8 x 10-9

1-10power of 1

Step-by-step explanation:

(0.4×10-6)(0.7×10-2)

(-2)(5)

-10

1×-10 power of 1

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet