exam Maths Puzzle Numerical Ability

Asked to graph the ineguality 3x

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exam Other Question

I have a triangular prism with these dimensions: base width of 8, prism height of 9 and a base depth of 6. I am to use the pythagorean theorem to find the slant height of the trian A group of ten 6 and 12 volt batteries are wired in series; the sum of their voltages is 84 volts. How many of each type of battery are used?

6x + 12x = 84
18x = 84 does not work