Example: 2x+2y=8 and 3y+2x=6
Okay so u first want to put on of the equations into a y= form. So let's use 3y+2x=6. Subtract 2x from both sides. 3y=6-2x divide by 3. Y= 6-2/3x or y= -2/3x + 6. Now just plug this new equation in for Y since "y=" into the other equation.
2x + 2(-2/3x + 6) = 8.
Then you would distribute the 2 into the parenthesis and simplify to solve for x.
After you solve for x, plug x into one of the original equations to find y.
Answer:
$17.64
Step-by-step explanation:
$15.50 and $5.50
with 20% off
and 5% sales tax.
take the 20% first.
(15.50 + 5.50) * ( 100 - 20) % = 21 *0.8 = $16.80
now add the tax
0.05 * 16.80 + 16.80 = $17.64
A rational number is any number that can be made into a fraction and is either repeating or stops when in decimal form.
Rational numbers between 3 and 3.5 would be 10/3 (3.33 repeating), and 13/4 (3.25).
Hope this helps!! :)
An expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable). Functions are ubiquitous in mathematics and are essential for formulating physical relationships in the sciences
I’m 644.001 dollars if not I’m sorry
