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Nastasia [14]
3 years ago
6

Find the total cost. $50 item; $10 coupon off; 10% sales tax

Mathematics
2 answers:
nekit [7.7K]3 years ago
8 0
Answer-$44
Explanation:
ExtremeBDS [4]3 years ago
6 0

Answer: 44 dollars

Step-by-step explanation:

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Can someone help me with this problem asap
xenn [34]

Answer:

f(x) = $ x^4 - 2x^3 + 49x^2 - 18x + 360 $ is the required polynomial.

Step-by-step explanation:

Given the zeroes (roots) of the polynomial are $ -3i $ and $ 2 + 6i $.

We know that complex roots occur in conjugate pairs.

So, this means that $ +3i $ and $ 2 - 6i $ would also be the roots of the polynomial.

If $ \pm 3i $ are to be the roots of the polynomial then the polynomial should have been: $ x^2 + 9 = 0$.

Now, to determine the polynomial for which $ 2 \pm 6i $ would be the roots.

Roots of the polynomial are nothing but the values of x (any variable) that would make the polynomial zero.

⇒ $ x = 2 + 6i \hspace{35mm} x = 2 - 6i $

⇒ $ x - 2 - 6i = 0 \hspace{25mm} x - 2 + 6i = 0 $

The required polynomial would be the product of all the above polynomials.

$ i.e., (x^2 + 9)(x - 2 + 6i)(x - 2 - 6i) = 0 $

Multiply this to get the required equation.

⇒$ (x^2 + 9)(x^2 - 2x + 40) $

$ \implies x^4 - 2x^3 + 40x^2 + 9x^2 - 18x + 360 = 0 $

∴ The required polynomial is x⁴ - 2x³ + 49x² - 18x + 360 = 0.

3 0
3 years ago
14. Pizza palace offers five sizes personal: (8 inches) small:(10 inches) medium:(12 inches) large:(14 inches) and extra large:(
VladimirAG [237]
<span>To calculate the average; add up all the numbers, then divide by how many numbers there are. In this case, there are 5 numbers; personal, small, medium, large, and extra large.
</span>8 + 10 + 12 + 14 + 16 / 5 --> 60/5 = 12
3 0
3 years ago
What’s an h value? pls help
IRINA_888 [86]

Answer:

A

Step-by-step explanation:

edge

8 0
3 years ago
Factor x^2 + 10x + 25. Show your work. (3 points)
Bad White [126]
 a² + 2ab + b² = (a+b) * (a + b)   <span>pattern condensed multiplication</span>

 x²      +        10x      +  25
 a²      +        2ab      +  b²    

(1x)²  +      2*1x*5    + (5)²   =     (a+b)*(a+b)
a=x         2ab= 10x      b=5  =     (x+5)*(x+5)

Answer : (x+5)*(x+5)
        

3 0
3 years ago
X2 – 6<br> 3x + 10<br> ?<br> g(4)<br> =<br> Be sure to simplify your answer.<br> g(x)<br> =
Triss [41]
5/11

((4)^2 - 6) / 3(4)+10
16 - 6 / 12 + 10
10/22 we can simplify this further
10 divided by 2
22 divided by 2

You get 5/11 which is the same as 10/22
8 0
2 years ago
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