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Coal is a non-renewable energy resource. Name two other non-renewable energy resources.

oil and gas
KY
Answered by Kieran Y. • Physics tutor
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The function f is given by f(x) = SQRT(2x − 5). Work out x when f(x) = 1.2

1.2 = SQRT(2x-5)square both sides1.2^2 = 2x -5 add 5 to both sides 1.2^2 + 5 = 2xdivide both sides by 2(1.2^2 + 5)/2 = x
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Work out the value of 2^4

2x2x2x2 = 4x2x2 =8x2=16or(2x2)x(2x2)=(4)x(4)=16
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Answered by Kieran Y. • Maths tutor
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Factorise x^2 -2x-3

Because of the signs within the equation we know that the factorised solution will be in the form (x+?)(x-?)The two numbers in the brackets have a product of -3 and the sum of -2.In this case, the numbers ar...
JA
Answered by Joshua A. • Maths tutor
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How does the cell divide?

The cell divides through four stages:ProphaseMetaphaseAnaphaseTelophase and CytokinesisBefore prophase the DNA, genetic material of the cell, is coiled and not visible. All that is visible is a dark patch. D...
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Answered by Klara H. • Biology tutor
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