Can someone help I don’t understand my answer are not adding up

Mathematics

1 answer:

andriy [413]3 years ago

6 0

Answer:

Step-by-step explanation:

∠ ABC = 9x + 5 ( alternate angles )

∠ ABC and ∠ DCB are sam- side interior angles and sum to 180° , that is

9x + 5 + 16x = 180

25x + 5 = 180 ( subtract 5 from both sides )

25x = 175 ( divide both sides by 25 )

x = 7

Then

∠ ABC = 9x + 5 = 9(7) + 5 = 63 + 5 = 68° → B

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54 is 75% of x.

75% of x:
$75 \% \ of \ x=75\% \times x= \frac{75}{100}x=\frac{3}{4}x$

75% of x is (3/4)x and 75% of x is 54. Set (3/4)x equal to 54:
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