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Solve these simultaneous equations; 2y + x = 8, 4 + 4y = 8x

equation 1: 2y + x = 8 equation 2: 4 + 4y = 8xSolve by substitution ; simplify equation 1 2y + x = 8 x = 8 - 2y substitute into equation 2 4 + 4y = 8(8 - 2y)4 + 4y = 64 - 16y 4 + 20y = 64 20y = 60 y = 3 subs...
JH
Answered by Josephine H. • Maths tutor
4609 Views

Solve 3x + 10 = 10(2x-5)

Multiply out the right hand side so equation becomes 3x+10=20x-50Move x's to one side and numbers to other so 17x = 60x= 60/17
DS
Answered by Devin S. • Maths tutor
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Express 126 as a product of its prime factors

(2) (63)-->(2) (3) (21)-->(2) (3) (3) (7)*(1)
TC
Answered by Taner C. • Maths tutor
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Convert 56 (decimal value) into its binary equivalent

56 into binary56/2 = 28 remainder 028/2 = 14 remainder 014/2 = 7 remainder 07/2 = 3 remainder 13/2 = 1 remainder 1and only 1 is remainingWrite the remainders you found in order from step 6 to 1 = 111000Write...
FW
Answered by Freya W. • Computing tutor
3339 Views

Explain lossless compression.

Lossless compression is when an image or document is reconstructed in a more efficient way using an algorithm to rewrite it. No data is lost from the file despite the compressed version taking up less memory...
FW
Answered by Freya W. • Computing tutor
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