Your classmate states that only precious minerals, such as diamonds, are valuable. based on your lesson on the rock cycle, you

a. agree with her; pound for pound, diamonds cost the most
b. agree with her; diamonds are valuable, but there are other minerals that are used in industry that have a high value, as well
c. disagree with her; the cost of diamonds has dropped sharply over the past ten years
d. disagree with her; diamonds have no true value

The correct answer is B.agree with her; diamonds are valuable, but there are other minerals that are used in industry that have a high value, as well

Diamonds are valuable but there are also many minerals that are used in Industry and are valuable too. For example Gold is a valuable element that is used in the production of Micro-processors. Platinum is another mineral that is used in the production of Catalytic converters and nitric acid. It is also very expensive.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

mass and volume are the answers you are looking for