During this year, the first cellular phone was introduced to the market. It cost $3,500 and weighed an enormous 16 oz. (Cell phones today weigh less than 5 oz.) The sum of the digits in the thousands place and the ones place is half of the digit in the tens place. The digit in the thousands place is neither prime nor composite. The digit in the hundreds place is the sum of the digits in the thousands and the tens place. The digit in the hundreds place is 3 times the digit in the ones place. What year am I?

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

the answer is 13/48

step-by-step explanation:

i wish i could you, i have no idea how to answer this

step-by-step explanation:

answer: the sun

explanation:

water cycle describes the evaporation of water from earth's surface, formation of clouds and precipitation water back onto the surface of earth. seventy percent of the earth is covered with water in the form of seas and oceans. the heat of the sun causes the evaporation of water from the surface of the ocean. the water vapors rise and condense to form water droplets. the collection of these water droplets form clouds which rain down again.

the evaporation of the oceans surface water as part of the water cycle is caused by the sun