Answer:
6.76
Step-by-step explanation:
applying pythogorem theorem
a^2+b^2=c^2
5^2+b^2=13^2
25+b^2=169
b^2=169/25
b^2=6.76^2
b=6.76
1.) x=4
2.)? 20=32-50
3.)x= 16 divided by 4,3+1, etc.
Well, 10x4=40 because 10+10+10+10=40 and that means your answer must be 40 ones or you asked something else.
(2,-2) would be the answer I think
