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Answer:
Step-by-step explanation:
Number 10...
A quadrilatersl has a total of 360degrees hence add the ratios and equate to 360.
1+3+7+9=20
So 20=360degrees
Then equate each ratio.
20=360
1 =?
3=?
7=?
9=?
Cross multiply to get each.use the same knowledge for number 27 where two of the angles are 65.a quadrilatersl has 360 so 65 + 65=130.then 360-130=230
230 divide by two because the remaining angles are equal .
230÷2=115 each
Number 13....
1/5of a number should give 60
1/5 of x=60
Then take 60÷1/5
Which changes to 60 ×5/1=300
Step-by-step explanation:
Number 10...
A quadrilatersl has a total of 360degrees hence add the ratios and equate to 360.
1+3+7+9=20
So 20=360degrees
Then equate each ratio.
20=360
1 =?
3=?
7=?
9=?
Cross multiply to get each.use the same knowledge for number 27 where two of the angles are 65.a quadrilatersl has 360 so 65 + 65=130.then 360-130=230
230 divide by two because the remaining angles are equal .
230÷2=115 each
Number 13....
1/5of a number should give 60
1/5 of x=60
Then take 60÷1/5
Which changes to 60 ×5/1=300