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Solve the system of equations 3r -4s equals 0 and 2r plus 5s equals 23?
Presumably this is a simultaneous equation in the form of: 3r-4s = 0 2r+5s = 23 Multiply all the terms in the top equation by 2 and in the bottom equation by 3: 6r-8s = 0 6r+15s = 69 Subtract the bottom equation from the top equation: -23s = -69 Divide both sides by -23 to find the value of s remembering that a minus number divided into a minus number is equal to a plus number: s = 3 Substitute the value of s into the original equations to find the value of r: Therefore: r = 4 and s = 3
What times what equals 276?
1 x 276, 2 x 138, 3 x 92, 4 x 69, 6 x 46, 12 x 23, 23 x 12, 46 x 6, 69 x 4, 92 x 3, 138 x 2, 276 x 1 = 276
What greatest common factor of 57 and 69?
'Step ladder' to find the factors. 3)57 = 19 19 = 1 & 3)69 = 23 23)23 = 1 The Only and greatesty common factor (GCF) is '3' . NB '19' & '23' are prime numberd and have no common factors.
What is 729?
81
What is 69 divided by 9?
7.6667
