Hey there!
To use the substitution method in order to solve the system of equations,
y=7x+8
y=x+20 , first notice that both equations are set equal to the same value, y.
Knowing this, 7x+8 and x+20 both equal the same value so you would set them equal to one another:
7x+8=x+20.
This would be substitution as you are substituting one of the equations in place of y.
Now, solve for x:
7x+8=x+20
6x+8=20
6x=12
x=2
Now that you know x equals the value of 2, you can substitute the value into one of the equations to find y:
y=x+20
y=2+20
y=22
Now that you have x=2 and y=22, you can conclude that your answer would be (2,22) or choice B.
Hope this helps and have a wonderful day! :)
The total cost of Francis's purchases is $75.44.
The total cost of the purchase is the sum of the costs of the video games, taxes and the DVDs. Total cost increases by each of these items.
Total cost = tax + cost of the 2 video games + cost of the dvd
Total cost of the video games = 2 x 29.95 = $59.90
Total sales tax paid = 8% x ($59.90 + $9.95)
= 0.08 x $69.85
= $5.59
Total cost of the purchase = $59.90 + $9.95 + $5.59 = $75.44
To learn more about taxes, please check: brainly.com/question/25311567
Answer:
A Rational Number can be made by dividing an integer by an integer. (An integer itself has no fractional part.)
Answer:
x = 37/3 = 12.333
Step-by-step explanation:
Step 1 :
Pulling out like terms :
1.1 Pull out like factors :
15x - 185 = 5 • (3x - 37)
Equation at the end of step 1 :
Step 2 :
Equations which are never true :
2.1 Solve : 5 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation :
2.2 Solve : 3x-37 = 0
Add 37 to both sides of the equation :
3x = 37
Divide both sides of the equation by 3:
x = 37/3 = 12.333