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dem82 [27]
3 years ago
6

If AD=20 and AC=3x+4, find the value of x. Then find AC and DC. I don't understand.

Mathematics
1 answer:
Fofino [41]3 years ago
5 0
<span>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</span>
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