To do: Find the number that should be subtracted from 0.1 to get 0.03 Solution: Let us subtract the number by $x$ So, $0.1 -x = 0.03$ $x = 0.1 - 0.03$ $x = 0.07$ Therefore, the number should be 0.07

BODMAS tells us the order in which mathematical operations should be performed. In BODMAS each letter stands for a mathematical operation. Brackets:     (      ) The operations in brackets should be performed first in any calculation Orders/Others: Orders are square roots or indices (sometimes called powers or exponents, square ... Read More

Yes, the air is a poor conductor of heat. Heat results when moving particles hit each other, which creates friction and thereby creates thermal energy. To conduct heat the atoms must be as close as possible. This is the reason why the heat flows through solids much quicker than in liquids. In gases, the molecules or atoms are very loosely packed, reducing the ... Read More

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I think your question is what is supersonic speed. The speeds which are greater than the speed of sound are called supersonic speeds. Many aircrafts such as Dassault Rafale, Sukhoi, etc  are supersonic aircrafts, because their speed is higher than the speed of sound.

Salinization is the process by which water-soluble salt concentration increases in the soil. When the water in soils evaporates at high temperatures, salts are in turn drawn from the soil to the surface.This supply of water can be caused by flooding of the land by seawater, seepage of seawater, or ... Read More

There are different ways in which Food can be preserved. Below are some examples of Food PreservationDrying is one of the most ancient food preservation techniques, which reduces water activity sufficiently to prevent bacterial growth. Refrigeration preserves food by slowing down the growth and reproduction of microorganisms and the action of ... Read More

A thermometer is an instrument for measuring and indicating temperature (how hot or cold something is). There are two types of thermometer which we use very commonly, they are:1. Oral and rectal thermometersIt is a narrow, concealed glass tube containing mercury. When the temperature rises or falls, the mercury expands ... Read More

Bone marrow is the spongy tissue inside bones, such as your hip and thigh bones. It contains pluripotent stem cells. These stem cells can develop into the red blood cells that carry oxygen through your body, the white blood cells that fight infections, and the platelets that help with blood ... Read More