A book costs $12.99, and a video game costs $39.99. Rounded to the nearest cent, how much more is the tax on the video game than the tax on the book?<span>
</span>12.99 Rounded is 13.00
39.99 Rounded is 40.00
The tax on the video game than the tax on the book by 0.
Answer:
x+y=12 x-y=2 x=7, y=5
Step-by-step explanation:
you just set the equations up so that the sum is 12 difference is 2. then solve using eliminations, add the 2 equations which gives 2x=14, x=7 then solve for y. Hope this helped!!
Answer: 5
Step-by-step explanation:
We know that the standard deviation of the sampling distribution of the means is given by :_
![SE=\sigma_x=\dfrac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=SE%3D%5Csigma_x%3D%5Cdfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
Given : The average weekly earnings for employees in general automotive repair shops is
.
The standard deviation for the weekly earnings for such employees =
Now, the standard deviation of the sampling distribution of the means of average weekly earnings for samples of size
:-
![SE=\sigma_x=\dfrac{50}{\sqrt{100}}\\\\\Rightarrow\ SE=\dfrac{50}{10}\\\\\Rightarrow\ SE=5](https://tex.z-dn.net/?f=SE%3D%5Csigma_x%3D%5Cdfrac%7B50%7D%7B%5Csqrt%7B100%7D%7D%5C%5C%5C%5C%5CRightarrow%5C%20SE%3D%5Cdfrac%7B50%7D%7B10%7D%5C%5C%5C%5C%5CRightarrow%5C%20SE%3D5)
Hence, the standard deviation of the sampling distribution of the means of average weekly earnings for samples of size 100 = 5
Letter D would not be a quadratic.
x^2 + 3x - 2 = x^2 - 2x once simplified becomes
5x - 2 = 0 this is linear.
Answer:
a = ±23
Step-by-step explanation:
![a^2=529](https://tex.z-dn.net/?f=a%5E2%3D529)
![a_{1} =23](https://tex.z-dn.net/?f=a_%7B1%7D%20%3D23)
![a_{2} =-23](https://tex.z-dn.net/?f=a_%7B2%7D%20%3D-23)