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43 votes
43 votes
Can you please help me figure out where to start so I can teach this to my child?

Can you please help me figure out where to start so I can teach this to my child?-example-1
User Harish Rajagopal
by
3.3k points

2 Answers

24 votes
24 votes

Answer:

Explanation:

Those consecutive angles must sum to 180 degrees.

7x+9+7y-4=180

7x+7y+5=180

7x+7y=175

x+y=25

x=25-y

We also have

11x-1+2y+5=180

11x+2y+4=180

11x+2y=176, using x=25-y that we found above makes this

11(25-y)+2y=176

275-11y+2y=176

-9y+275=176

-9y=-99

y=11, and since x=25-y

x=25-11

x=14

Finally

z+7x+9=180

z+7x=171

z=171-7x, we found that x=14 earlier so

z=171-7(14)

z=171-98

z=73

So the three values are

x=14, y=11, and z=73 degrees.

User Danijela
by
2.4k points
28 votes
28 votes

Answer:

all of the brackets first

User Robert Hickman
by
3.3k points