ralucacoriciuc2482
25.07.2021 •
Mathematics
I need help please can not figure out this problem
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Ответ:
2x(x) =2x^2
2x(-4)= -8x
-3(x)= -3x
-3(-4)= 12
2x^2 -8x-3x+12= 2x^2 -11x+12
2. (x+2)(x+5)
x^2+5x+2x+10= x^2 +7x+10
3. (3x-1)(x+2)
3x^2 +6x-x-2= 3x^2+5x-2
Ответ:
The sandals cost before tax $25.
Step-by-step explanation:
Let us assume that the sandals cost before tax $x.
So, after giving an 8% tax the price will be
.
If the $15 gift certificate on that after tax price and the final cost of the sandals becomes $12, then
1.08x - 15 = 12
⇒ 1.08x = 27
⇒ x = $25
Hence, the sandals cost before tax $25. (Answer)