The final price is the cost plus the tax.
Since we know the tax and a percent, we can write this as
T = C(1+r)
T = what Graham paid = $87.45
C = cost before tax
r = tax rate expressed as a decimal = .40
Plugging in what we know
87.45 = C (1+.4)
87.45 = C(1.4)
Divide both sides by 1.4
C = $62.46
Answer:
-15x^2 +8x -1
Step-by-step explanation:
(3x – 1)(-5x + 1)=
3x(-5x) + 3x(1) - 1(-5x) -1 =
-15x^2 +3x +5x -1 =
-15x^2 +8x -1
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Step-by-step explanation:
you can use division method
Step-by-step explanation:
Perhaps you want to solve the equation for the value of x. If so then let us work it out:
Answer:
<h3>4x^2/3</h3>
Step-by-step explanation:
Given the expression (8x)^2/3
This can also be expressed as;
(8x)^2/3
= (2^3x)^2/3
= (2³)^2/3 * x^2/3
= 2^2 * x^2/3
= 4x^2/3
Hence the equivalent expression is 4x^2/3
