3 years ago

I’m sorry I’m bad at math and I need help

Mathematics

1 answer:

Natali [406]3 years ago

5 0

A or B

I'm confuseddd omg

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4 years ago

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Art [367]

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Step-by-step explanation:

$\because m\angle ABC = 90\degree \\\therefore m\angle ABD+m\angle DBC = 90\degree \\\therefore (3x+7)\degree + (5x+11)\degree = 90\degree \\\therefore (8x + 18)\degree = 90\degree \\8x + 18 = 90\\8x = 90-18\\8x = 72\\x = \frac{72}{8}\\\huge \red {\boxed {x = 9}} \\\\m\angle DBC + m\angle FBC = 180\degree \\(straight \: line \: \angle 's) \\(5x + 11)\degree + (3y+1)\degree = 180\degree \\(5\times 9+11)\degree + (3y+1)\degree = 180\degree \\(45+11)\degree + (3y+1)\degree = 180\degree \\56\degree + (3y+1)\degree = 180\degree \\(3y+1)\degree = 180\degree - 56\degree \\(3y+1)\degree = 124\degree \\3y + 1 = 124\\3y = 123\\y = \frac {123}{3}\\\huge \purple {\boxed {y = 41}}$

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