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Katen [24]
3 years ago
10

Can some one help me please.... by step by step explanation...... ​

Mathematics
1 answer:
vredina [299]3 years ago
5 0
<h2>The answer is A) 4.</h2><h2>step by step explanations is in the picture.</h2>

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A TV has a listed price of $647.99 before tax. If the sales tax rate is 9.75%, find the total costs of the TV with the sales tax
Lena [83]

Answer:

$647.99

Step-by-step explanation:

Divide the tax rate (9.750%) by 100 to get a decimal rate of 0.09750.

Add 1 to the decimal rate to get 1.09750.

Divide that tax-included price ($647.99) by 1.09750 price to get a pretax price of $590.42.

Subtract the pretax price from $647.99 to get the sales tax amount of $57.57.

6 0
3 years ago
The price of a dvd is $24.00 plus 8% sales tax. What is the sales tax on this dvd in dollars and cents
Andreas93 [3]
You would have to multiply $24 by 8% and then subtract from the total.

So, 24 x .8 = 19.2

24-19.2 = 4.8

$4.80 sales tax.
6 0
3 years ago
Read 2 more answers
Evaluate: x(y - xy), where x = -5 and y= -2
yulyashka [42]

Answer:

60

Step-by-step explanation:

You would just plug everything in so you get -5(-2-(-5)(-2)) which can be reduced so -5(-12) which is 60

5 0
3 years ago
H(x) = 2^x<br>Solve the equation h^-1 (x) =0.5​
Ludmilka [50]

Answer:

The answer is

<h2>\sqrt{2}  \:  \: or \:  \: 1.414</h2>

Step-by-step explanation:

<h3>h(x) =  {2}^{x}</h3>

To solve the equation we must first find h-¹(x)

To find h-¹(x) equate h(x) to y

That's

<h3>y =  {2}^{x}</h3>

<u>Next interchange the terms </u>

x becomes y and y becomes x

That's

<h3>{2}^{y}  = x</h3>

<u>Make y the subject</u>

Take logarithm to base 2 to both sides

That's

<h3>log_{2}( {2} )^{y}  =  log_{2}x \\ y  log_{2}2 =  log_{2}(x)</h3>

But

<h3>log_{2}(2)  = 1</h3><h3>y =  log_{2}(x)</h3>

So we have

<h3>{h}^{ - 1} (x) =  log_{2}(x)</h3>

Now we can solve the equation

We have

<h3>log_{2}(x)  = 0.5</h3>

Convert the logarithm into exponential form using the fact that

<h3>log_{a}(x)  = b \:  \:  \cong \:  \: x =  {a}^{b}</h3>

So we have

<h3>x =  {2}^{0.5}</h3>

But

<h3>{2}^{0.5}  =  \sqrt{2}</h3>

So we have the final answer as

<h3>\sqrt{2}  \:  \: or \:  \: 1.414</h3>

Hope this helps you

8 0
3 years ago
F(x) = 4x + 7, g(x) = 3x2<br><br> Find (fg)(x).
Brums [2.3K]
F(x) = 4x + 7
g(x) = 3x²

(f · g)(x) = 3x²(4x + 7)
(f · g)(x) = 3x²(4x) + 3x²(7)
(f · g)(x) = 12x³ + 21x²
5 0
4 years ago
Read 2 more answers
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