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What is the next number in this sequence? 10, 13, 20, 31, 46, ...

Analyse the sequence to find the second order difference.10 13 20 31 46 75 3 7 11 15 19 4 4 4 4
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Answered by Frank D. • Maths tutor
6345 Views

Given that y = 5, solve the following equation for x, 9x - 3y = 97 - 5x

Subsitute y for 5 to give 9x - (3 * 5) = 97 - 5xCalculate the brackets 9x - 15 = 97 - 5xAdd 15 to both sides 9x = 112 - 5xAdd 5x to both sides 14x = 112Divide both sides by 14 x = 8
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Answered by Frank D. • Maths tutor
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Solve for x, 4x+3.5 = 1

First, you regroup all numbers which are not factors of x on one side of the equation: 4x = 1 - 3.5 so 4x = - 2.5 Then, you isolate x: x = - 2.5/4 x = - 5/8 = - 0.625
JS
Answered by Jade S. • Maths tutor
3375 Views

A particle is in equilibrium under the action of four horizontal forces of magnitudes 5 newtons acting vertically upwards ,8 newtons acting 30 degrees from the horizontal towards the left,P newtons acting vertically downwards and Q newtons acting to right

first of all we need the resolve the diagonal force into its horizontal and vertical components. Using trigonometry you can deduce that the horizontal component equates to 8Cos30 and the vertical component e...
AA
Answered by Ali A. • Maths tutor
6822 Views

Solve algebraically the simultaneous equations: x^2 + y^2 = 25, y - 3x = 13

Steps:Number both equationsUsing equation 2, solve for y in terms of x.Substitute this answer into equation 1 so that your equation only includes x terms and no y terms.Solve equation 1 for x. (This will be ...
RM
Answered by Rowena M. • Maths tutor
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