Answer:
1. 360
2. Yes because in a regular hexagon all angles are congruent so the exterior angles are as well
3. (i) 60 (ii) 120
4.
(i) 1. 360 2. Yes because in a regular octagon all angles are congruent so the exterior angles are as well 3. (i) 45 (ii) 135
(ii) 1. 360 2. Yes because in a regular 20-gon all angles are congruent so the exterior angles are as well 3. (i) 18 (ii) 162
Step-by-step explanation:
Works for each polygon
1. First take the number of sides and subtract it by 2 then multibly that by 180
6-2=4x180=720
Then divide by the number of angles and subrtact that number by 180 to find the measure of one exterior angle
720/6=120
180-120=60
Then multiply by the number of exterior angles
60x6=360
2. Regular polygons always have equal angles so the exterior angles are as well
3. Put in your numbers from earlier
(i) 60 (ii)120
Hope this helps! :)
P.S. Feel free to mark brainliest :)
Answer:
75
Step-by-step explanation:
If a triangle = 180 degrees, then subtract 105 by 180, and you get 75!
4/18
With a six-sided die and 3 marbles there are 18 different outcomes.
(6 numbers • 3 marbles = 18 outcomes)
1/2 of the die is even (2,4,6) so that’s already a 3/6 chance of getting an even number. But since there is only one red marble there is a 1/3 chance of picking it. 3+1=4. 4/18
Answer:
8/15
Step-by-step explanation: 2 x 4 = 8 and 3 x 5 = 15
So if it wants to know which fraction is greater, your going to need to find a common denominator (the bottom number)
7/12 & 5/6 6 and 12 have a least common multiple (LCM) of 12... this means that both six and 12 can go into twelve. now you convert the fraction's numerator so it equals everything correctly. Now, since 7/12 already has a denominator of twelve than that means that you dont need to change it. but with 5/6 you need to multiply it by 2. (since 6x2=12)
so now it is 10/12 & 7/12. which one now has the bigger numerator?
A:10/12 > 7/12
for adding the two fractions, you also convert the denominator so it equals 10/12 and 7/12 then just add the numerator
A: 17/12(this is in improper form) so now it's 1 5/12
do the same thing with subtracting but then subract instead of add (obviously)
A: 10/12-7/12= 3/12 which can be simplified into 1/4
when multiplying a fraction, you don't need to change anything, just multiply right across, so 7x5=35 and 12x6=72
A: 35/72
Now try the other one on your own using the instructions i gave you!
Hope this helps!
