Answer:
60
Step-by-step explanation:
you know that if one line is perpendicular to another line, and another line is perpendicular to that line, they are all perpendicular (90). so, all corners are right angles. that means that angle AGD is 90. so, if you know 30, then subtract 30 from 90 and you get that angle AGF is 60. then, because angle AGF and angle EGB are vertical angles, they are congruent, so x is 60.
Answer:

Step-by-step explanation:
3x + 4y = 16
- 3x - 3x
__________

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Answer:
slope: 2.5
y-intercept: -7
equation: 2.5x - 7
Step-by-step explanation:
I hope I helped. Sorry if I'm wrong :(
If you would like an explanation I'd be glad to give one.
Answer: The interquartile range= 12
Step-by-step explanation:
From the given the lower quartile
= 42
the middle quartile
= 49
The upper quartile
= 54
We know that the interquartile range is given by:=-
Interquartile range= upper quartile- lower quartile or 
⇒
Hence, the interquartile range of the data displayed in this box-and-whisker plot is 12.