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ahrayia [7]
3 years ago
13

Jan bought a blazer for $39.90. The price of the blazer was $38. What sales-tax rate was she charged for this blazer percentage

wiese
Mathematics
2 answers:
Nadya [2.5K]3 years ago
7 0
The question asks for sales tax rate. Sales tax is 39.90-38=1.90 and that's taxed onto the original $38 so 1.9/38=0.05
5% tax on the blazer
Whitepunk [10]3 years ago
4 0

Answer:

5% sales-tax rate was she charged for this blazer

Step-by-step explanation:

As per the statement:

Jan bought a blazer for $39.90.

The price of the blazer was $38.

Sales tax price = 39.90 - 38 = $1.90

We have to find the sales-tax rate was she charged for this blazer percentage wise.

Using formula:

\text{Sales tax rate} = \frac{\text{Sale tax}}{\text{Price of the blazer}} \times 100

Substitute the given value we have;

\text{Sales tax rate} = \frac{1.90}{38} \times 100 = 5\%

Therefore, 5% sales-tax rate was she charged for this blazer percentage wise

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Answer:

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Step-by-step explanation:

i) f(x) = x^{2} +  10x - 12 is a quadratic equation and a quadratic equation will have two roots whose values when substituted in to the given quadratic equation will give the value.

ii) The question is therefore essentially asking us to find the roots of the given quadratic equation.

This can be done by equating the given quadratic equation to zero and then solving the equation for its roots.

∴ x^{2} + 10x -12 = 0    ⇒    x  = (-10 ± \sqrt{10^{2} +(48)} ) ÷ 2                                                          

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