分数计算器

A is more than B and B is 25% more than C.

Researchers suspect that meteorites (particles of matter that fall to Earth’s surface from space) are pieces of asteroids, the many minor planets primarily inhabiting the region between Mars and Jupiter called the asteroid belt. The most common meteorites are ordinary chondrites—rocks containing tiny flecks of metal. By analyzing the spectrums of sunlight reflected by asteroids to determine the asteroids’ chemical composition, researchers have found that most of the brighter asteroids contain the same silicates and other compounds that dominate chondrites. These silicaceous, or S-type, asteroids are the most abundant type in the inner asteroid belt, the part of the asteroid belt from which objects are most likely to escape and travel to Earth. However, S-type asteroids reflect red and infrared light much better than they reflect green, blue, and violet light, suggesting that they have a higher metal content than do ordinary chondrites. This has led at least one researcher to posit that meteorites come from other types of asteroids that are too small and too dim to be detected. However, S-type asteroids could be ordinary chondrites that have been weathered by the effects of the space environment, making them seem redder and more metallic than they really are.

Just as preserving forests offers a chance to sequester carbon and (i) ___ unfavorable climate change, preventing the (ii) ___ of coastal habitats, which are often razed for development or aquaculture, ensures that their deep carbon deposits are (iii) ___ into the atmosphere as carbon dioxide.

Four pipes A, B, C, and D can fill a tank in 3, 6, 9 and 12 days respectively. What is the least portion of tank that can be filled in one day by any three of the pipes working together at their respective rates?

If x equals all prime numbers that satisfy the inequality what is the average value of x ?