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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
Answer:
Step-by-step explanation:
A ratio problem
230 sides is to 147 height as 220 sides is to an unknown height X
230/147 = 220 / X solve for x ( since 220 < 230 X should be < 147)
X = (220)(147) / 230
X = height = 140.6 m is less than 147
(x^3 - y^3)(x^3 + y^3)
You can get this by factoring based on the a^2 - b^2 model
Answer:
4.5
Step-by-step explanation:
7 1/2 X 6 = 45.
Then you just add the decimal point to get 4.5.