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How do I know which ending to use after the preposition «в»?

The preposition «в» has two meanings: in/on or to (as in movement, going to a place). When it means in or on, the noun which follows must be in the prepositional case, ending in «е». For example «мальчик в п...
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Answered by Eleanor B. • Russian tutor
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Before a drug is sold and released to the public, what measures must scientists take to ensure the safety of a drug and why are these steps taken?

Phase I- The drug must be tested on animals and tissue culturesPhase II - The drug is tested on healthy volunteers in small dosesPhases III- The drug is tested on sick patients in small dosesSmall doses are ...
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Answered by Saranya G. • Biology tutor
2993 Views

How to find the equation of a line connecting two given coordinate points.

The equation of the line will be in the set form for a straight line, this being y = mx + cHence substitute the x and y values of one of the points into this equation.Repeat for the other coordinate.Hence so...
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Answered by Kazuaki S. • Maths tutor
3699 Views

How does oxidative phosphorylation produce ATP?

Oxidative phosphorylation requires the electron carrier system; comprised of four protein complexes (complexes I - IV) as well as the enzyme ATPase. These are intrinsic enzymes that line the inner mitochondr...
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Answered by Jack B. • Biology tutor
5196 Views

In a bag of 72 red and green marbles, 5/9 are green. What is the number of red marbles in the bag?

72 cards5/9 are green = 72/(5/9) = 40 green marbles72 - 40 = 32 red marbles
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Answered by Venn S. • Maths tutor
3989 Views