in step 2 he made his first mistake
1/2(n-4)-3=3-(2n+3)
1/2n-4/2-3=3-(2n+3)
1/2n-2-3=3-(2n+3)
in the second step he put 5 instead of 2.
Answer: About 27.01
Step-by-step explanation: The way to find the diagonal is to multiply one side of the square by the sq. rt. of 2. First, we had to find one side of the square, which would be 76.4 divided by 4, then multiply that by the square root of 2.
76.4 / 4 = 19.1
19.1 x sq. rt. of 2 = 27.0114790413, or about 27.01
Hi!
You can turn the decimals into percentages by multiplying the decimal by 100. Multiplying a decimal by 100 turns the decimal into a percentage. So for 0.18, we would do this:
![0.18 \times 100 = 18\%](https://tex.z-dn.net/?f=0.18%20%5Ctimes%20100%20%3D%2018%5C%25)
This would give us the percentage, which would be 18%.
We would do the same for 0.7, which would look like this:
![0.07 \times 100 = 70\%](https://tex.z-dn.net/?f=0.07%20%5Ctimes%20100%20%3D%2070%5C%25)
Which would give us our percentage, which would be 70%.
On conclusion, the formula for turning a decimal into a percentage is:
![decimal \times 100 = \%](https://tex.z-dn.net/?f=decimal%20%5Ctimes%20100%20%3D%20%5C%25)
Hope this helps! Good luck!
<span>When you solved quadratic equations, you created factors whose product was zero, implying either one or both of the factors must be equal to zero. When solving a quadratic inequality,
you need to take more options into consideration. (x + 4) > 0 and (x
+ 3) < 0. One factor must be negative and one must be positive.</span>
The standard form:
![Ax+By=C](https://tex.z-dn.net/?f=Ax%2BBy%3DC)
The point-slope form:
![y-y_1=m(x-x_1)](https://tex.z-dn.net/?f=y-y_1%3Dm%28x-x_1%29)
We have the slope m = 3 and the point (5, 5). Substitute:
<em>use distributive property</em>
<em>add 5 to both sides</em>
<em>subtract 3x from both sides</em>
<em>change the signs</em>
![\boxed{3x-y=10}](https://tex.z-dn.net/?f=%5Cboxed%7B3x-y%3D10%7D)