The distance from mercury to the sun is 28.5 million miles. the distance from neptune from the sun is 2.8 billion miles. express the distance between mercury and neptune in scientific notation

2.7715 x 10^9 miles

Step-by-step explanation:

The distance from Mercury to the sun is 28.5 million miles which is 28.5 x 10^6 miles.

The distance from Neptune to the sun is 2.8 x 10^9 miles.

Then we know that:

Distance Neptune-Sun = Distance Neptune-Mercury + Distance Mercury-Sun

Solving for 'Distance Neptune-Mercury" we have that:

Distance Neptune-Mercury = Distance Neptune-Sun - Distance Mercury-Sun

Distance Neptune-Mercury = 2.8 x 10^9 miles - 28.5 x 10^6 miles.

Distance Neptune-Mercury = 2,771,500,000 miles

Which can be expressed: 2.7715 x 10^9

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk