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Nick Gray

Resourceful tutor and undergraduate at The University of Auckland

4691Students helped
12Questions answered
£50Per hour
Maths

Asked by Om · 2 years ago

Simplify by using distributive property 1.2/5*[{-3}/4*1/4]?

The distributive property allows you to multiply something outside the brackets with each component of everything inside. in a simple example: 5 x (8), the distributive property may be used to expand the 8 into say 3 + 5, therefore the equivalent is 5 x (3 + 5) = 15 + 25 = 40. for the example given the distributive property actually makes the solution more complex than it needs to be in my opini... more

Maths

Asked by Lucy · 2 years ago

A patient receives absorbed dose of radiation 300mGy from an alpha emitting radionuclide radium 223, into breast tissue this emits 300mSv The patient at the same time receives a dose (300mGy) from strontium 89 of beta emitter Calculate effective dose?

given the information provided this is not a maths question - perhaps better to provide either a bit more context or post elsewhere? (sounds like could be Chemistry / Physics...?)

Maths

Asked by Bella · 2 years ago

How do you find the equation of a line on a graph using the equation y=mx+c?

First identify the two cordinates on the graph. Lable the first co-ordinate x1 and y1 . The second coordinate x2 and y2. Then use the formula y2 minus y1 divded by X2 minus X1. This will give you the gradient of the line. Lastly, look at where the line crosses the y axis. This will be the c intercept. Hope this helped !!

Maths

Asked by Amy · 2 years ago

Laura thinks that a triangle cannot have two obtuse angles.Do you agree? Explain your answer?

An obtuse angle is an angle greater than 90° and the sum of angles in a triangle is 180°. If we had two obtuse angles then this would mean that the sum of the angles of the triangle would be greater than 180°, as both of the angles would be greater than 90° and we would still have a third angle to account for. So we can't have more than 1 obtuse angle.

Maths

Asked by Fantage · 2 years ago

The mean of a data set is equal to 10 and its standard deviation is equal to 1. If we add 5 to each data value, then the mean and standard deviation become A. mean = 15 , standard deviation = 6 B. mean = 10 , standard deviation = 6 C. mean = 15 ,?

hopefully this isn’t too complex, but feel free to skip to the bottom for the more simple / intuitive explanation if its too much :) lets say your data is x1, x2 ... xn. we know the mean (xbar = (x1+x2+... xn)/n = 10), and standard deviation (xsigma = sqrt [(x1-xbar)^2 + ... (xn - xbar)^2] / sqrt(n) ) lets say that our new data set is y1, y2 ... yn and for each yi = xi + 5 (we add 5 each value)... more

Maths

Asked by Sam · 2 years ago

Am think of a number , multiply it by two then subtract 9?

if we assume the number you are thinking of is denoted as ‘x’. after multiplying it by 2, we have 2x. then subtract 9, we have 2x - 9.

Maths

Asked by Cucu · 2 years ago

It reads n natural number. Write a program that displays its digits as well as their number?

you’ll need to give a bit more information before someone can help answer your question i’m afraid.

Maths

Asked by Jumana · 2 years ago

How Dickens presents the supernatural in this extract stave 1 a Christmas carol?

please post this in the correct category - this is not maths

Maths

Asked by Jumana · 2 years ago

How Dickens presents the supernatural in this extract stave 1 a Christmas carol?

please post this in the correct category - this is not maths

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Nick's profile picture

Nick Gray

Resourceful tutor and undergraduate at The University of Auckland

4691Students helped
12Questions answered
£50Per hour