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05-09-2017
Mathematics

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If AD=20 and AC=3x+4, find the value of x. Then find AC and DC.

I don't understand.

If AD20 and AC3x4 find the value of x Then find AC and DC I dont understand class=

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15-09-2017

Using the information we have 3x+4=40 Do the same to each side of the equation to eliminate for x. 3x+4=40 Minus 4 from each side 3x=40-4 3x=36 Divide 3 from each side x=36/3 x=12 AC=3x+4 insert the value of x 3(12)+4=40 AC=40 AD=20

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