Answer:
<h2>1. P = 13.254</h2><h2>2. P = 6.64 + 2x</h2><h2>6. P = 10</h2>
Step-by-step explanation:
![1.\\\text{The length of semicircle:}\\\\l=\dfrac{1}{2}d\pi\\\\d-diameter\\\\d=2.2\\\\\text{substitute:}\\\\l=\dfrac{1}{2}(2.2)\pi=1.1\pi\approx(1.1)(3.14)=3.454\\\\\text{The perimeter of the figure:}\\\\P=2(3.8)+2.2+3.454=13.254](https://tex.z-dn.net/?f=1.%5C%5C%5Ctext%7BThe%20length%20of%20semicircle%3A%7D%5C%5C%5C%5Cl%3D%5Cdfrac%7B1%7D%7B2%7Dd%5Cpi%5C%5C%5C%5Cd-diameter%5C%5C%5C%5Cd%3D2.2%5C%5C%5C%5C%5Ctext%7Bsubstitute%3A%7D%5C%5C%5C%5Cl%3D%5Cdfrac%7B1%7D%7B2%7D%282.2%29%5Cpi%3D1.1%5Cpi%5Capprox%281.1%29%283.14%29%3D3.454%5C%5C%5C%5C%5Ctext%7BThe%20perimeter%20of%20the%20figure%3A%7D%5C%5C%5C%5CP%3D2%283.8%29%2B2.2%2B3.454%3D13.254)
![2.\\P=2(3.32)+2x=6.64+2x](https://tex.z-dn.net/?f=2.%5C%5CP%3D2%283.32%29%2B2x%3D6.64%2B2x)
![6.\\\text{Look at the picture.}\\\\P=4(2)+2(1)=8+2=10](https://tex.z-dn.net/?f=6.%5C%5C%5Ctext%7BLook%20at%20the%20picture.%7D%5C%5C%5C%5CP%3D4%282%29%2B2%281%29%3D8%2B2%3D10)
Answer:
x=2
x=-5
Step-by-step explanation:
You need to get everything on one side to have a quadratic equation:
x^2+6x-4 -(3x+6) = x^2+3x-10
All factors of 10 are 1*10 and 2*5.
5-2 = 3 and 5*-2 = -10
Factoring x^2+3x-10 gives us (x-2)(x+5)
x=2
x=-5
Answer:
The correct option is 'c' <em>cross-multiplication</em>
Step-by-step explanation:
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
Step-by-step explanation:
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
<em>your answer is</em> <u><em>1st quadrant!</em></u>
<u><em>-----------------------------------------</em></u>
<em>Have a good day <3</em>