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Irina-Kira [14]
2 years ago
15

a television that usually sells for $499 is on sale for 10% off. what is the discount of the television?

Mathematics
2 answers:
ICE Princess25 [194]2 years ago
7 0

Answer:

The discount is $49.90 the final price is $449.10

Step-by-step explanation:

Firdavs [7]2 years ago
4 0

Answer:

449.10 discount is 49.90

Step-by-step explanation:

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*20 POINTS*
Paraphin [41]

Answer:

If you want to use the Rational Zeros Theorem, as instructed, you need to use synthetic division to find zeros until you get a quadratic remainder.

P: ±1, ±2, ±3, ±6  (all prime factors of constant term)

Q: ±1, ±7              (all prime factors of the leading coefficient)

P/Q: ±1, ±2, ±3, ±6, ±1/7, ±2/7, ±3/7, ±6/7  (all possible values of P/Q)

Now, start testing your values of P/Q in your polynomial:

f(x)=7x4-9x3-41x2+13x+6

You can tell f(1) and f(-1) are not zeros since they're not = 0Now try f(2) and f(-2):

f(2)=7(16)-9(8)-41(4)+13(2)+6

       112-72-164+26+6 ≠ 0

f(-2)=7(16)-9(-8)-41(4)+13(-2)+6

       112+72-164-26+6 = 0  OK!! There is a zero at x=-2

This means (x+2) is a factor of the polynomial.

Now, do synthetic division to find the polynomial that results from

(7x4-9x3-41x2+13x+6)÷(x+2):

-2⊥ 7   -9   -41    13     6

         -14   46   -10    -6          

      7  -23   5       3     0     The remainder is 0, as expected

The quotient is a polynomial of degree 3:

7x3-23x2+5x+3

Now, continue testing the P/Q values with this new polynomial.  Try f(3):

f(3)=7(27)-23(9)+5(3)+3

      189-207+15+3 = 0  OK!!  we found another zero at x=3

Now, another synthetic division:

3⊥ 7   -23    5     3

          21   -6   -3_

    7    -2    -1    0  

The quotient is a quadratic polynomial:

7x2-2x-1  This is not factorable, you need to apply the quadratic formula to find the 3rd and 4th zeros:

x= (1±2√2)÷7

The polynomial has 4 zeros at x=-2, 3, (1±2√2)÷7

Step-by-step explanation:

7 0
3 years ago
(-t^2+5t^2-6t)+(8t2 – 8t)<br> Answer should be an expanded polynomial in standard form
docker41 [41]
The answer should be

12t^2 - 14t

Let me know if it’s right.
6 0
3 years ago
Read 2 more answers
Y=4x+25 find the domain of the function and if it discrete​
lozanna [386]

Answer:

f(x)=xf(x)=x ,  g(x)=2xg(x)=2x

f(x)=5f(x)=5 ,  g(x)=xg(x)=x

Step-by-step explanation:

not sure but still,

5 0
2 years ago
95% of 7 year old children are between inches
Oduvanchick [21]

Answer:

7 year old boys: 45-53 inches

7 year old girls: 45-52 inches

4 0
3 years ago
Read 2 more answers
What is the area of the parallelogram?
Alja [10]
It’s 45, as the equation for a parallelogram is A= bxh, and 9x5 is 45
5 0
3 years ago
Read 2 more answers
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