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Daniel and Mohammed buy concert tickets for £63. All the concert tickets are the same price. Daniel pays £24.50 for 7 tickets. How many tickets does Mohammed buy? .

24.5 Divided by 7 = 3.5.63-24.5= 38.538.5 Divided by 3.5 = 11
DH
Answered by Danny H. • Maths tutor
2764 Views

32sqrt 2 = 2^a, find the value of a

Ok so this is a typical exam questions worth around 3-4 marks depending on which exam board you are sitting with.To start solving this problem, we are looking for 2 to the power of "something" - so...
SM
Answered by Shannon M. • Maths tutor
11743 Views

Write x² + 4x -16 = 0 in the form (x+a)² - b = 0. Solve the equation giving your answer in surd form as simply as possible.

x² + 4x -16 = 0 (x+2)² -20 = 0 We note that the coefficient of x 2 is 1 and the coefficient of x is 4. Therefore we say the that square is (x+2). This leaves us with an additional 4 from this expansion. We m...
HH
Answered by Henry H. • Maths tutor
4939 Views

Ammonia is made from nitrogen and hydrogen in a reversible reaction. Write a balanced symbol equation for this reaction, name the reaction and give one use for ammonia.

N 2 + 3H 2 ⇌ 2NH 3 The Haber process, and ammonia is used in the production of many synthetic fertilizers.
HH
Answered by Henry H. • Chemistry tutor
5365 Views

A gene often has two alleles. One allele is dominant and the other allele is recessive. When is a recessive allele expressed as a characteristic?

A gene has two alleles, they can be either dominant (A) or recessive (a).So the possible combinations are:AAAaaaDominant alleles are expressed as they are 'stronger' . So in the Aa example the dominant allel...
TG
Answered by Thomas G. • Biology tutor
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