Distance formula is like pythagoren ahtoerem
D=
![\sqrt{(7-2)^{2}+(5-8)^{2}}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%287-2%29%5E%7B2%7D%2B%285-8%29%5E%7B2%7D%7D%20)
the distance between oints (x1,y1) and (x2,y2) is
D=
![\sqrt{(x2-x1)^{2}+(y2-y1)^{2}}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%28x2-x1%29%5E%7B2%7D%2B%28y2-y1%29%5E%7B2%7D%7D%20)
(2,8) and (7,5)
D=
![\sqrt{(7-2)^{2}+(5-8)^{2}}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%287-2%29%5E%7B2%7D%2B%285-8%29%5E%7B2%7D%7D%20)
D=
![\sqrt{(5)^{2}+(-3)^{2}}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%285%29%5E%7B2%7D%2B%28-3%29%5E%7B2%7D%7D%20)
D=
![\sqrt{25+9}](https://tex.z-dn.net/?f=%20%5Csqrt%7B25%2B9%7D%20)
D=
![\sqrt{34}](https://tex.z-dn.net/?f=%20%5Csqrt%7B34%7D%20)
apxos
D=5.8309....
round
D=5.8 units
It's the first step.4x-x-2+6=6x+16 ##substract 2 rather an add 2
Check it carefully next time.!!
Answer:
for every 2 tables there are 10 chairs, so for 12 tables there are 60 chairs
Question 8.
The best answer would be A, two times y divided by 7.
Question 9.
The distributive property. Or A.
Question 10.
5(2+y) would be the answer. So, D.
Hope this helps!
X2+16 is the prime <span>polynomial.
x2+16 is the only </span><span>polynomial that couldn't be factored out anymore
x2-36 --> (x-6)(x+6)
x2-7x+12 --> (x-3)(x-4)
x2-x-20 --> (x+5)(x-4)</span>