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A bag contains 5 blue marbles and 5 red marbles. If marbles are NOT replaced after being selected from the bag, what is the probability (in percentage) of picking 2 red marbles? Give your answer to one decimal place.

As there are a total of 10 marbles in the bag, then the probability of picking a red marble is 5/10. When the next marble is selected, there are only 9 marbles left in the bag since the red marble has not...

PB
Answered by Peter B. Maths tutor
9199 Views

How do different factors affect the rate of photosynthesis and transpiration in plants?

Firstly it's important to distinguish that photosynthesis and transpiration are two different processes. Photosynthesis is the process used by plants to convert carbon dioxide and water into gucose and ox...

ES
Answered by Emma S. Biology tutor
83843 Views

Differentiate y=(x^2+1)(e^-x)

Here, we're using the product rule (and the chain rule for the e-x): y=(x2+1)(e-x) dy/dx=(2x)(e-x)+(x2+1)(-1)(e-x) Then we simplify to get...

RD
Answered by Rishav D. Maths tutor
6976 Views

Macroeconomic policy can both be a problem and a solution in economic fluctuations. Explain.

Macroeconomic policy, which is a term to describe fiscal policy and monetary policy, can often be a problem during economic fluctuations. Greece is a good example of this. As a result of their sovereign d...

RD
Answered by Rishav D. Economics tutor
5388 Views

What is the angular speed of a car wheel of diameter 0.400m when the speed of the car is 108km/h?

A) 75 rad/s      B) 150 rad/s      C) 270 rad/s      D) 540 rad/s       Identify equation as w=v/r      Diameter = 0.4m  Radius  = half the diameter = 0.2m       Velocity needs to be in m/s so 108km/h = 1...

EW
Answered by Edward W. Physics tutor
15809 Views

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