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Elena-2011 [213]
3 years ago
8

Suppose you bought something

Mathematics
1 answer:
pav-90 [236]3 years ago
6 0

Subtract to find the amount of tax paid then divide the amount of tax paid by the price of the item bought.


7.61 - 6.95 = 0.66 (amount of tax paid)


0.66/6.95 = 0.0949 x 100 = 9.49 %

Answer: 9.49 % (round off as needed)

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Identify all factors of the expression 12x^2-14x-6
Evgen [1.6K]

Let's solve this by using the quadratic formula:

\frac{-b+-\sqrt{b^2-4ac} }{2a}


Note that we only use the coefficients so a=12, b=-14, and c=-6.

Plug values in the quadratic equation:

\frac{ -  ( - 14)± \sqrt{ {( - 14)}^{2} - 4(12)( - 6) } }{2(12)}

And so by evaluating those values we obtain:

\frac{14+-\sqrt{484} }{24}=\frac{14+-22}{24}  \\\\

Now we have two answers which are our factors one where we add another where we subtract and so:

First factor:

\frac{14+22}{24}=\frac{36}{24}=\frac{3}{2}


Second Factor:

\frac{14-22}{24}=\frac{-8}{24}=-\frac{1}{3}


And so your factors are

\frac{3}{2},-\frac{1}{3}

meaning that those are your roots/x-intercepts.


6 0
3 years ago
Solving quadratics
jeka57 [31]
The answer to this equation is 3
7 0
3 years ago
Tom rode his horse for 4/6 a mile. Liz rode her horse for an equal distance. What fraction is equilvalent to 4/6?
frosja888 [35]

the fraction that is equivalent to 4/6 is 2/3

8 0
3 years ago
Rhonda earned 324.65 delivering newspapers. She promised her sister 0.2 of her earnings for helping her. How much does Rhonda ow
Talja [164]

Answer: 1623.25

324.65/0.2= 1623.25

4 0
3 years ago
The internal telephone numbers in the phone system on a campus consists of 4 digits, with the 1st not equal to 0. How many diffe
N76 [4]

Answer:

This system have 9000 different numbers.

Step-by-step explanation:

We know that the internal telephone numbers in the phone system on a campus consists of 4 digits, with the 1st not equal to 0.

We have total 10 digits.

In the first place we have 9 possibilities, because from the conditions of the task in the first place there cannot be 0.

In second, third and fourth place we have 10 possibilities.

Therefore, we get

N=9\cdot 10\cdot10 \cdot 10=9000

This system have 9000 different numbers.

4 0
4 years ago
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