Answer:
x = 23/5
y = -2/5
Step-by-step explanation:
We are given two equations
2x + 3y = 8 eq. 1
x - y = 5 eq. 2
From eq. 2
x - y = 5
x = 5 + y eq. 3
Substitute eq. 3 into eq. 1
2x + 3y = 8 eq. 1
2(5 + y) + 3y = 8
Simplify the equation
10 + 2y + 3y = 8
10 + 5y = 8
5y = 8 - 10
5y = -2
y = -2/5
or
y = -0.4
Substitute the value of y into eq. 3 to get the value of x
x = 5 + y eq. 3
x = 5 - 2/5
x = 23/5
or
x = 4.6
Therefore, the solution set is
(x, y) = (23/5, -2/5)
This is the point of intersection where these two equations meet.
Answer:
14 weeks
Step-by-step explanation:
Let's create and equation to display this situation. Toby already has $70 saved, so that is not the variable and no x should go next to it. He is saving $15 more each week. Lastly, we want to end up with $280 saved. The equation will look like this, given the information:
15x + 70 = 280
To find how many weeks it will take, solve the equation!
15x = 210 Subtract 70 from 280
x = 14 Divide 210 by 15
Therefore, it will take Toby 14 weeks to save up for a new skateboard.
Hope this helps! If you have any questions about my work, please let me know down in the comments!
Answer:
Im sorry, im not in high school yet :(
Step-by-step explanation:
:( wish i could help :(
<h2>66.66%</h2>
Step-by-step explanation:
<h3>game cost = $12 with 0% discount</h3><h3 /><h3>so, on putting x% discount videogame cost become $8</h3><h3><em>x</em><em>%</em><em> </em><em>d</em><em>i</em><em>s</em><em>c</em><em>o</em><em>u</em><em>n</em><em>t</em><em> </em><em>=</em><em> </em><em>x</em><em>/</em><em> </em><em>1</em><em>0</em><em>0</em><em> </em><em>×</em><em> </em><em>$</em><em>1</em><em>2</em><em> </em><em>=</em><em> </em><em>$</em><em>8</em></h3><h3><em>x</em><em>%</em><em> </em><em>d</em><em>i</em><em>s</em><em>c</em><em>o</em><em>u</em><em>n</em><em>t</em><em> </em><em>=</em><em> </em><em>6</em><em>6</em><em>.</em><em>6</em><em>6</em><em>%</em></h3>
<h2>
MARK ME AS BRAINLIST</h2>
X=-7/2 but i am not for sure. hope this helps