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If 11 carrots weigh 170g how much would 20 carrots weigh?

170 divided by 11 is the weight of one carrot (15.45), so mulitply that by 20 (309.09) would be the weight of 20 carrots.
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Answered by Freya S. • Maths tutor
5358 Views

How do I solve the simultaneous equations x-2y=1 and x^2-xy+y^2=1?

Depending on what you prefer, you can either substitute or you can try to solve this by elimination. I'll explain both. 1) x - 2y = 1 2) x 2 - xy +y 2 = 1 If solving by elimination, you need to start thinkin...
KS
Answered by Katerina S. • Maths tutor
14524 Views

Find the value of x when x^2-x-6=0

We firstly need to look how to factorise quadratics. (x )(x ) By looking at this, we need 2 numbers that add together to make -1. We need 2 numbers that multiply to make -6. To multiply to make -6, we need a...
JR
Answered by Josh R. • Maths tutor
5931 Views

Solve the simultaneous equations: 15x+10y=20 4x+5y=17

To explain this question to a student, I would initially ask my own questions in order to gain an understanding of what the student already knows about simultaneous equations. I would ask if they had seen si...
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Answered by Roshan A. • Maths tutor
4147 Views

A ladder 7.4m long is leaning against a wall as shown in the diagram. The foot of the ladder is 2.9m away from the wall. Calculate the distance the ladder reaches up the wall to 2 significant figures.

7.4 2 -2.9 2 =answer 2 square root above answer to get the answer
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Answered by Abi C. • Maths tutor
6233 Views