The approximate total surface area of Earth is 5.1 x 108 km2. All the salt water on Earth has an approximate surface area of 352,000,000 km2.

All the freshwater on Earth has an approximate surface area of 9 x 106 km2 .
10
How much of Earth’s surface is covered by water, including both salt and fresh
water? Write your answer in scientific notation.

351.23

step-by-step explanation:

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950