To do this, change into common denominators. The common denominator is 21 so change the problem from 1/3 + 1/7 to 7/21 + 3/21. This gives you 10/21. It is already in simplest form.
3.9
Hope that helps
You can use the app math.way also
Use pythagorena theorme
D=
![\sqrt{(x1-x2)^{2}+(y1-y2)^{2}}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%28x1-x2%29%5E%7B2%7D%2B%28y1-y2%29%5E%7B2%7D%7D%20)
NOTE: x1 and x2 means the first x and second x, not x^1 and x^2
points given are
(1,1)
(5,6)
x1=1
y1=1
x2=5
y2=6
D=
![\sqrt{(1-5)^{2}+(1-6)^{2}}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%281-5%29%5E%7B2%7D%2B%281-6%29%5E%7B2%7D%7D%20)
D=
![\sqrt{(-4)^{2}+(-5)^{2}}](https://tex.z-dn.net/?f=%20%5Csqrt%7B%28-4%29%5E%7B2%7D%2B%28-5%29%5E%7B2%7D%7D%20)
D=
![\sqrt{16+25}](https://tex.z-dn.net/?f=%20%5Csqrt%7B16%2B25%7D%20)
D=
![\sqrt{41}](https://tex.z-dn.net/?f=%20%5Csqrt%7B41%7D%20)
6.403
answer is B
Answer:
Step-by-step explanation:
Use the slope formula
(x2-x1)/(y2/y1)
substitute the values
(1-10)/(9-7)
solve
-9/-2
simplify
9/2 or 4.5
(8/9) / 6 =
8/9 * 1/6 =
8/54 which reduces to 4/27 of the book each day <===