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dmgcity
06.10.2019 •
Mathematics
What's the percentage of 60% of 90 show the work? ?
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Ответ:
Ответ:
r=4
Step-by-step explanation:
Firstly, you see that the line is 180 degrees and there's a 90 degree angle and 55 degree angle. So to find the value of r, you need to find how much degrees are in that section, so 180-90 is 90 and 90-55 is 35, so that section is 35 degrees. So, the equation is (9r-1)=35, so I add 1 to both sides, 9r=36 then I divide both sides by 9, and 36 divided by 9 is 4. So r=4.