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5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.

5 tins of soup have a total weight of 1750 grams. --> from this, we can calculate the total weight of 1 tin of soup, with 1750÷5 = 350 grams 4 tins of soup and 3 packets of soup have a total weight of 149...
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Answered by Eszter S. • Maths tutor
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Solve (x/4)-(2x/x+2) = 1. Give your solutions to 2 decimal places. You must show your working.

We will begin by eliminating fractions in the equation. To do this, the equation will be multiplied by 4 and (x+2), as these are the denominators of the two fractions. Multiplying by 4 gives:x - (8x/x+2) = 4...
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Answered by Dogu Z. • Maths tutor
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When you are working out dy/dx = 0, why do you do this and what does it mean?

It relates back to what we actually mean why we say dy/dx. Simply put, dy/dx means the rate of change of y with respect to the rate of change in x over a infinitely small space of time. Therefore, when we ar...
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Answered by Matthew J. • Maths tutor
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3 teas and 2 coffees have a total cost of £7.80 5 teas and 4 coffees have a total cost of £14.20 Work out the cost of one tea and the cost of one coffee.

We approach this question using algebra.Lets say the price of teas=x, and the price of coffees = ytherefore 2 equations can be written:3x+2y=7.805x+4y=14.20we now treat these equations as simultaneous equati...
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Answered by Abigail R. • Maths tutor
6154 Views

Sketch the graph y=-x^3, using this sketch y=-x^(1/3)

The first step in figuring out this question is to first determine what the y=x 3 looks like.If you are not already fimilar with this function, you can use some basic principles to find out what it looks lik...
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Answered by Deloris O. • Maths tutor
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