У = 2х +7
y = x+8
using substitution
2 answers:
Answer:
(1, 9)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Equality Properties
Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtract Property of Equality
Step-by-step explanation:
<u>Step 1: Define Systems</u>
y = 2x + 7
y = x + 8
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
Substitute in <em>y</em>: 2x + 7 = x + 8 Subtract <em>x</em> on both sides: x + 7 = 8 Subtract 7 on both sides: x = 1
<u>Step 3: Solve for </u><em><u>y</u></em>
Define equation: y = x + 8 Substitute in <em>x</em>: y = 1 + 8 Add: y = 9
Answer:
x = 1
y = 9
Step-by-step explanation:
y = 2x + 7 --------------------(I)
y = x + 8 ----------------------(II)
Substitute y = 2x + 7 in equation (I)
2x + 7 = x + 8 {Subtract 'x' from both sides}
2x + 7 - x = 8 {Combine like terms}
x + 7 = 8 {Subtract 7 from both sides}
x = 8 -7
x = 1
Substitute x = 1 in equation (I)
y = 2*1 + 7
= 2 + 7
y = 9
You might be interested in
Positive 20 and negative 10 is a net amount of 10. 10 minutes is 1/6 of an hour. 5*1/6=5/6km
The total number of cups of sugar needed will be given by: Total amount=(number of bottles)×(number of cups of sugar per box) number of bottles to be made is 5 bottles number of cups per box is 3/4 thus the total number of cups required will be: Total amount=3/4×5=3 3/4 cups
Ok its it is three hundred million seven hundred sixty three one hundred thirty six
Answer:
n+5=10
Step-by-step explanation:
Since the photo booth charges a $500 fee for two hours at the party and an additional 50 dollars per hour, we have:
50x+500=C
Where x is the hours stayed and C is the total cost. Since Cindy doesn't want to spend more than 700 dollars, we have:
So she spent an additional 4 hours on the rental.