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What are the functions of the substances in the blood?

The blood is an amazing way to deliver all kinds of important and interesting materials around our body to the organs and tissues that need it the most and is efficient in removing harmful substances from th...
Answered by • Biology tutor
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6x-2y=33 4x+3y=9

12x-4y=66 12x+9y=27-13y=39 y=-312x+9(-3)=2712x-27=2712x=54x=4.5
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Answered by Yi S. • Maths tutor
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Explain one possible effect on the equilibrium market price of an increase in production costs for firms

An increase in production costs will result in an increase in the equilibrium price. This is because the increase in production cost means that firms will be less willing to supply and therefore there will b...
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Answered by Leonie R. • Economics tutor
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A linear sequence starts a + 2b, a +6b, a + 10b. The 2nd has a value of 8 and the 5th term has a value of 44. What are the values of a and b?

a + 6b = 8 5th term: a + 18b = 44 term 1: a + 6b = 8term 2: a + 18b = 44 term 2 - term 1: 12b = 36b = 36/12 = 3 a + 6b = 8a + 6(3) = 8a = 8-18 = -10
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Answered by Leonie R. • Maths tutor
3902 Views

A person has a suitcase with wheels. The person pulls the suitcase with a horizontal force of 13 N for 110 m. Calculate the work done on the suitcase by the person (3 marks).

Work done = force x distance moved Work done = 13 N x 110 m Work done = 1430 J
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Answered by Jasmine T. • Physics tutor
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