add the 2 angles: 89+80= 169
subtract 180-169= 11
11° is the measurement of the final angle
do sin(80)=12/x
x(sin(80))=12
plug in on calculator:
x=12/(sin(80))
Answer:
9.333
Step-by-step explanation:
25. Cross multiplying
nx1 =0.19x12
n=2.28
Answer:
Yen is the currency of Japan
170 - 7m > 99
170 > 7m + 99
71 > 7m
71/7 > m
10 1/7 > m
Answer:
19
Step-by-step explanation:
Here we have to find out number of people attended the party. we are given with the number of the handshakes in the party .
We are going to use the following formula to determine the number of guests
Nos. of handshakes
Here we have H = 171
Hence our equation becomes
now we solve it by splitting the middle term method
Now we have to find the factors of 342 whose difference to 1. The factors are 19 and 18 in this case. hence we slit our middle term like this
Hence
either
(x+18)=0 or (x-19) =0 Thus
x=-18 which is not possible as no of people can not be less than 0
x=19 which will our answer