First round to 899 to 9 then count 5 decimal places left then put in scientific notation 9.0 x 10^-5
I saw this same type of question and page but with different numbers just 5 minutes ago...
Anyway here’s the answers:
1) Complementary
3x+1+44=90
3x+45=90
3x=45
x=5
2) Vertical
Ignore everything about the work. The answer is 120 degrees because they’re vertical angles.
3) Supplementary
15x-5+110=180
15x+105=180
15x=75
x=5
And I can’t see the last question clearly
Yes they are all proportional
Answer:
9x+5y-5z
Step-by-step explanation:
if you need an explanation I can put it in the comments :)
Answer:
No
Step-by-step explanation:

therefore it doesn't coenide with pythagorian theorem