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There are n sweets in a bag, 6 orange, rest yellow. H takes two, one after another, and eats them. Probability both are orange is 1/3. Show n^2 - n - 90 = 0.

First, we start with what we do know and this should lead us to the answer with steps inbetween. So the amount of yellow sweets to start is (n-6) but we want to focus on the orange sweets. This question is a...
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Answered by Nicole F. • Maths tutor
3776 Views

When do you use the imperfect tense in Spanish?

One of the main purposes of the imperfect tense is to show that an action has been repeated over a course of time in the past. It can be used, for example, when you want to express hobbies or habits in the p...
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Answered by Nayaab B. • Spanish tutor
3520 Views

How is unemployment related to causes of inflation?

Inflation is a sustained rise in general price levels. There are several causes for prices to rise. When production costs, such as wages and raw material prices increase- cost-push inflation occurs. Inflatio...
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Answered by Mark B. • Economics tutor
8698 Views

1 a) What is a pathogen? 1 b) How do white blood cells help to defend the body against pathogens?

1 a) a microorganism that causes infectious disease 1 b) White blood cells: - Ingest pathogens - produce antibodies which destroy particular bacteria or viruses - produce antitoxins which counteract the toxi...
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Answered by Lauraa B. • Biology tutor
6530 Views

When do I use the subjunctive in Spanish?

There are 2 moods in Spanish: the indicative, and the subjunctive. The indicative is used for anything that is concrete/ factual. For example: "Max habla español" (Max speaks Spanish). This is a fa...
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