I'll take this challenge since I'm not feeling lazy for once.... x would represent Gavin and y would represent Seiji.
a.
b. I will solve your system using substitution.
<span>Step 1: Solve </span>
![x+y=425](https://tex.z-dn.net/?f=x%2By%3D425)
for x
![x+y+-y=425+-y](https://tex.z-dn.net/?f=x%2By%2B-y%3D425%2B-y%20)
(add -y for both sides)
![x=-y+425](https://tex.z-dn.net/?f=x%3D-y%2B425)
<span>Step 2: substitute </span>
![-y+425](https://tex.z-dn.net/?f=-y%2B425)
for x in
![x+b=25](https://tex.z-dn.net/?f=x%2Bb%3D25)
![x+y=25](https://tex.z-dn.net/?f=x%2By%3D25)
<span>
</span>
![-y+425-y=25](https://tex.z-dn.net/?f=-y%2B425-y%3D25)
![-2y+425=25](https://tex.z-dn.net/?f=-2y%2B425%3D25%20)
(simplify both sides of the equation)
![-2y+425+-425=25+-425](https://tex.z-dn.net/?f=-2y%2B425%2B-425%3D25%2B-425%20)
(add -425 to both sides)<span>
</span>
![-2y=-400](https://tex.z-dn.net/?f=-2y%3D-400)
![\frac{-2y}{-2} = \frac{-400}{-2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B-2y%7D%7B-2%7D%20%3D%20%20%5Cfrac%7B-400%7D%7B-2%7D%20)
y=200
step 3: substitute 200 for y in
![x=-y+425](https://tex.z-dn.net/?f=x%3D-y%2B425)
![x=-y+425](https://tex.z-dn.net/?f=x%3D-y%2B425)
![x=-200+425 ](https://tex.z-dn.net/?f=x%3D-200%2B425%0A)
![x=225](https://tex.z-dn.net/?f=x%3D225)
![x=225, y= 200](https://tex.z-dn.net/?f=x%3D225%2C%20y%3D%20200)
c. Already answered with the picture that is attached.
d. Gavin earned 225 dollars while Seiji earned 200 dollars.
Recursive:
a(1)≈2
a(n)≈a(n-1)x3
explicit:
a(n)≈ 2(3)^n-1
congruent, vertical angles
Answer:
D) 10 units
Step-by-step explanation:
Opposite sides of a parallelogram are congruent.
__
<h3>setup</h3>
The relation between opposite sides tells you ...
BC = AD
2x = x +5
<h3>solution</h3>
x = 5 . . . . . . . subtract x from both sides of the equation
We want the length of AD, which is ...
AD = x +5 = 5 +5
AD = 10
_____
<em>Additional comment</em>
Often, it seems like the question is answered once the value of x is found. Here, finding the value of x is an <em>intermediate step</em>. The value of x is needed in order to be able to answer the question about <em>the value of an expression involving x</em>.
Answer:
Hello,
If f(x)=5x-13, then f^-1(x)= ![\frac{1}{5x-13}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5x-13%7D)
have good day
Step-by-step explanation: