for 2a, use the theorems of geometry and such to look at the area of the square as 16 squares total, then use the lengths and Sim/cos rule for the triangular area, then subtract and you have you shaded area.
I believe the answer is they are drawing an Octagon because a polygon has 5 sides add that by three it's an Octagon
Answer:
Y= 30
Step-by-step explanation:
180-70=110 So now you know what your other two angles add up to.
Take 110 and your two other problems (3y-20) and (y+10)
Substitute y for a random number, as in 30.
Do the math (3(30)-20)
90-20=70 [Now your previous 110 is 40}
Then for the second equation (30+10)= 40
Y=30
Answer:
16
Step-by-step explanation:
5m is equivalent to 500cm
500 ÷ 30 = 16.6666666667
= 16
