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Solve algebraically: 6a + b = 16 5a - 2b = 19

b= 16-6a this will be your substitution. 5a- 2(16-6a)=19 now multiply out. 5a-32+12a=19 always remember positive and a negative multiplied is a negative. 17a=51 a= 51/17 = 3 now substitute a 6(3) +b = 16 b= -2
JD
Answered by Jade D. • Maths tutor
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Solve the quadratic equation x^2-6x+5=0

x 2 - 6x + 5 = 0. For simple quadratic equations such as this example we need to factorise the expression into 2 brackets: (x+a)(x+b) = 0. To find a and b we can expand the brackets to give: x 2 + (a+b)x +ab...
WR
Answered by William R. • Maths tutor
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To what extent did Siegfried Sassoon influence Wilfred Owen's role as a war poet?

Siegfried Sassoon, a contemporary of Wilfred Owen, was one of his associates whilst Owen recovered in Craiglockhart, and is often seen as a figure of worship to Owen, and perhaps even an object of his affect...
AG
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I didn't quite understood the difference between the active and passive voice in French, could you explain?

The active voice present the subject of the sentence as the main protagonist of the action. In contrary, the passive voice present the subject of the sentence as going through the action. For example: Nos am...
AL
Answered by Audrey L. • French tutor
3321 Views

How do you know when to add probabilities together and when to multiply them together

A probability that an event occurs will always range between 0 and 1. If you want to know the probability of two events both happening you would multiply them together. For exampke what is the probability I ...
PS
Answered by Priyen S. • Maths tutor
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