Answer:
blue is sus
Step-by-step explanation:
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Solve the following system using substitution:
{y + 2.3 = 0.45 x
{-2 y = -3.6
In the second equation, look to solve for y:
{y + 2.3 = 0.45 x
{-2 y = -3.6
-3.6 = -18/5:
-2 y = -18/5
Divide both sides by -2:
{y + 2.3 = 0.45 x
{y = 9/5
Substitute y = 9/5 into the first equation:
{4.1 = 0.45 x
{y = 9/5
In the first equation, look to solve for x:
{4.1 = 0.45 x
{y = 9/5
4.1 = 41/10 and 0.45 x = (9 x)/20:
41/10 = (9 x)/20
41/10 = (9 x)/20 is equivalent to (9 x)/20 = 41/10:
{(9 x)/20 = 41/10
{y = 9/5
Multiply both sides by 20/9:
Answer: {x = 82/9
{y = 9/5
Replace X with -2 then solve:
(-2) +3 / (-2)-1
1 / -3 which is rewritten as -1/3
In order to solve, you must multiply the original price of the sneakers by the sales tax (in decimal form). So,
$65.95 x 0.0825 = $5.440875 < this is the amount of tax. Add this to the original price to find the total.
$65.95 + $5.440875 = $71.390875, which rounds to $71.39 with tax.
