Target is having a Back to School sale where all polo shirts are discounted by 20%. Joshua wants to buy five shirts: two cost $10.98 each, one costs $11.50, and two others cost $15.99 each. By law, sales tax is calculated on the discounted price of the shirts. Would the total cost of the shirts including the 6.5% sales tax be greater if the tax was applied before a 20% discount is taken, rather than after a 20% discount is taken?

Both cases will give the same price

Step-by-step explanation:

The total purchase that Joshua do will be:

2* $10.98 + 1 * $11.50 + 2* $15.99 = $65.44

Let's compare the price for both scenario

1. If the tax added before discount

taxed price $65.44 * (100+6.5)% =$69.6936

discounted price= $69.6936* (100-20)%= $55.75488

2. If the tax added after the discount

discounted price= $65.44 * (100-20)%= $52.352

taxed price $52.352 * (100+6.5%) = 55.75488

Both prices will be the same since the operation in this calculation is only multiplication.

1260=3*6*7*10=3^2*2^2*7*5 perfect cude = 3^3*2^

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0