Answer:
y = 20
x = 120
Step-by-step explanation:
2x + 3y = 300
3x + 5y = 460
mutliply eqn 1 by 3 and 2 by 2
6x + 9y = 900
6x + 10y = 920
y = 20
x =
Given:
Original price = $145.00
Final cost = $152.25
To find:
The percent of tax.
Solution:
The formula for tax is:
Tax = Final cost - Original price
![\text{Tax}=\$152.25-\$145.00](https://tex.z-dn.net/?f=%5Ctext%7BTax%7D%3D%5C%24152.25-%5C%24145.00)
![\text{Tax}=\$7.25](https://tex.z-dn.net/?f=%5Ctext%7BTax%7D%3D%5C%247.25)
Formula for tax percentage is:
![\text{Tax percent}=\dfrac{\text{Tax}}{\text{Original price}}\times 100](https://tex.z-dn.net/?f=%5Ctext%7BTax%20percent%7D%3D%5Cdfrac%7B%5Ctext%7BTax%7D%7D%7B%5Ctext%7BOriginal%20price%7D%7D%5Ctimes%20100)
![\text{Tax percent}=\dfrac{7.25}{145.00}\times 100](https://tex.z-dn.net/?f=%5Ctext%7BTax%20percent%7D%3D%5Cdfrac%7B7.25%7D%7B145.00%7D%5Ctimes%20100)
![\text{Tax percent}=\dfrac{725.00}{145.00}](https://tex.z-dn.net/?f=%5Ctext%7BTax%20percent%7D%3D%5Cdfrac%7B725.00%7D%7B145.00%7D)
![\text{Tax percent}=5](https://tex.z-dn.net/?f=%5Ctext%7BTax%20percent%7D%3D5)
Therefore, the percent of tax is 5%.
This is quite simple, you can see that the x-axis stays the same so then you know that it is a vertical line. You can tell because any point on this line will be (2,x). So to graph it, you draw a vertical line where x=2
<h3>
Answer:</h3>
y +3 = (1/4)(x +3)
<h3>
Step-by-step explanation:</h3>
The two-point form of the equation for a line is good for this.
... y -y1 = (y2-y1)/(x2-x1)(x -x1)
Substituting your values, we have ...
... y -(-3) = (-1-(-3))/(5-(-3))(x -(-3))
... y +3 = 2/8(x +3)
Since you ask for "an equation," we can leave it in this form.
... y +3 = (1/4)(x +3)
_____
Or we can rearrange it to <em>slope-intercept form</em>:
... y = (1/4)x -(2 1/4)
or put it in <em>standard form</em>:
... x -4y = 9
Red sweets
_______
Total number =
N÷n+8
Probility is 7/10=n÷n+8
10n= 7n+56
3n=56
N= 56/3 but it has to be a whole number so 7/10