![3 \sqrt{729}](https://tex.z-dn.net/?f=3%20%5Csqrt%7B729%7D%20)
The square root of 729 is in fact 27, as it is a perfect square, but this is not well known, so we can figure it out like this:
What goes into 729 that are perfect squares? 81 and 9:
![3 \sqrt{81*9}](https://tex.z-dn.net/?f=3%20%5Csqrt%7B81%2A9%7D%20)
Take the square root of 81 (9) and the square root of 9 (3). Move these to the outside of the square root (they will multiply with 3 since 3 is multiplied to the square root in the original problem)
![3 \sqrt{81*9} \\ 3*9*3](https://tex.z-dn.net/?f=3%20%5Csqrt%7B81%2A9%7D%20%5C%5C%203%2A9%2A3)
Now, just multiply:
Answer:
3m - 5
Step-by-step explanation:
3(m - 3) + 4 Distribute the 3
3m - 9 + 4 Simplify
3m - 5
Answer:
a. 28
Step-by-step explanation:
Given:
![155.78=2.95h+73.18](https://tex.z-dn.net/?f=155.78%3D2.95h%2B73.18)
We need to evaluate given expression to find the value of 'h'.
Solution:
![155.78=2.95h+73.18](https://tex.z-dn.net/?f=155.78%3D2.95h%2B73.18)
Now first we will apply Subtraction property of equality and subtract both side by 73.18 we get;
![155.78-73.18=2.95h+73.18-73.18\\\\82.6=2.95h](https://tex.z-dn.net/?f=155.78-73.18%3D2.95h%2B73.18-73.18%5C%5C%5C%5C82.6%3D2.95h)
Now we will use Division property of equality and divide both side by 2.95 we get;
![\frac{82.6}{2.95}=\frac{2.95h}{2.95}\\\\h=28](https://tex.z-dn.net/?f=%5Cfrac%7B82.6%7D%7B2.95%7D%3D%5Cfrac%7B2.95h%7D%7B2.95%7D%5C%5C%5C%5Ch%3D28)
Hence After evaluating given expression we get the value of 'h' as 28.
Answer:
x = 6.5
Step-by-step explanation:
The sum of the angles of a triangle is 180
8x+ 10x-10 + 10x +8 = 180
Combine like terms
28x -2 = 180
Add 2 to each side
28x-2+2 = 180+2
28x=182
Divide by 28
28x/28 = 182/28
x =6.5
Answer:
That means it will take you 1 and 1/3 hour to go a kilometer.