Answer:
2(1 + 2.5)
Step-by-step explanation:
Let's deal with the parenthesis first, 1 plus 2.5 is 3.5 and now let's multiply that by 2- Equals 7.
Hope that helped!
The answer is -2, hopes this helps
Answer:
1
Step-by-step explanation:
f(1) is simply the value of f(x) when x = 1. Therefore, looking at the graph, when x = 1, f(x) = 1.
Answer:
![x=\frac{70}{11},\:y=\frac{20}{11}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B70%7D%7B11%7D%2C%5C%3Ay%3D%5Cfrac%7B20%7D%7B11%7D)
Step-by-step explanation:
![\begin{bmatrix}4x+2y=16y\\ y=-\frac{1}{2}x+5\end{bmatrix}](https://tex.z-dn.net/?f=%5Cbegin%7Bbmatrix%7D4x%2B2y%3D16y%5C%5C%20y%3D-%5Cfrac%7B1%7D%7B2%7Dx%2B5%5Cend%7Bbmatrix%7D)
![\mathrm{Substitute\:}y=-\frac{1}{2}x+5](https://tex.z-dn.net/?f=%5Cmathrm%7BSubstitute%5C%3A%7Dy%3D-%5Cfrac%7B1%7D%7B2%7Dx%2B5)
![\begin{bmatrix}4x+2\left(-\frac{1}{2}x+5\right)=16\left(-\frac{1}{2}x+5\right)\end{bmatrix}](https://tex.z-dn.net/?f=%5Cbegin%7Bbmatrix%7D4x%2B2%5Cleft%28-%5Cfrac%7B1%7D%7B2%7Dx%2B5%5Cright%29%3D16%5Cleft%28-%5Cfrac%7B1%7D%7B2%7Dx%2B5%5Cright%29%5Cend%7Bbmatrix%7D)
![Simplify](https://tex.z-dn.net/?f=Simplify)
![\begin{bmatrix}3x+10=16\left(-\frac{1}{2}x+5\right)\end{bmatrix}](https://tex.z-dn.net/?f=%5Cbegin%7Bbmatrix%7D3x%2B10%3D16%5Cleft%28-%5Cfrac%7B1%7D%7B2%7Dx%2B5%5Cright%29%5Cend%7Bbmatrix%7D)
Isolate x for 3x+10=16(-1/2x+5): ![x=\frac{70}{11}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B70%7D%7B11%7D)
![\mathrm{For\:}y=-\frac{1}{2}x+5](https://tex.z-dn.net/?f=%5Cmathrm%7BFor%5C%3A%7Dy%3D-%5Cfrac%7B1%7D%7B2%7Dx%2B5)
![\mathrm{Substitute\:}x=\frac{70}{11}](https://tex.z-dn.net/?f=%5Cmathrm%7BSubstitute%5C%3A%7Dx%3D%5Cfrac%7B70%7D%7B11%7D)
![y=-\frac{1}{2}\cdot \frac{70}{11}+5](https://tex.z-dn.net/?f=y%3D-%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20%5Cfrac%7B70%7D%7B11%7D%2B5)
![-\frac{1}{2}*\frac{70}{11}+5=\frac{20}{11}](https://tex.z-dn.net/?f=-%5Cfrac%7B1%7D%7B2%7D%2A%5Cfrac%7B70%7D%7B11%7D%2B5%3D%5Cfrac%7B20%7D%7B11%7D)
![y=\frac{20}{11}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B20%7D%7B11%7D)
![\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}](https://tex.z-dn.net/?f=%5Cmathrm%7BThe%5C%3Asolutions%5C%3Ato%5C%3Athe%5C%3Asystem%5C%3Aof%5C%3Aequations%5C%3Aare%3A%7D)
![x=\frac{70}{11},\:y=\frac{20}{11}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B70%7D%7B11%7D%2C%5C%3Ay%3D%5Cfrac%7B20%7D%7B11%7D)
The answer is 1 becausr she started with 1 pice of paper