Answer: First I suggest that you write out the all the proportions which govern the 3 right triangles involved.
Once you do that you will find this one:
PQ/PS =PR/PQ
PR=PS+SR
Substitution will give you this quadratic:PQ2=PS2+PS*SR
144=PS2+7PS which has only one solution which make sense, namely 9
Then QS=sqrt(144-81)
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
if your multiplying it i think you are?
a neg. by a neg. is a positive
Answer: option C) 343
Justification:
The sequence of the denominators is:
term denominator
1 1 = 1^3
2 8 = 2^3
3 27 = 3^3
4 64 = 4^3
5 5^3 = 125
6 6^3 = 216
7 7^3 = 343
And that is the term searched. So, the answer is the option C) 343.
