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Temka [501]
3 years ago
6

I bought three shirts that had equivalent retail values I use 15 gift certificate at the time of purchase and paid a total of 81

how much did each in dividual shirt cost
Mathematics
1 answer:
Vlada [557]3 years ago
4 0

Answer:

Each shirt costed $27

each

Step-by-step explanation:

HOPE IT HELPS!!! please mark brainliest :)

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Write a polynomial function that meets the stated conditions.The zeros are −2 and 1.
Iteru [2.4K]

Answer:

A polynomial function that meet those conditions is x² + x - 2 = 0

Step-by-step explanation:

Hi there!

To solve this problem, let´s start writting a generic polynomial function in factored form. Since the function has two zeros, the factored form will have 2 terms:

(x+a)(x+b) = 0

For this equation to be 0, (x+a) or (x+b) have to be zero:

Then:

x + a = 0 ⇒ x = -a

In the same way:

x + b = 0 ⇒ x = -b

Then, the values "a" and "b" are equal to the zeros of the function but with the opposite sign.

In our case:

(x + a)(x + b) = 0

a = the zero of the function with opposite sign, that is, 2

b = -1

Then:

(x + 2)(x - 1) = 0

Apply distributive property:

x² - x + 2x - 2 = 0

x² + x - 2 = 0

Then, a polynomial function that meet those conditions is:

x² + x - 2 = 0

7 0
3 years ago
Which shows the correct substitution of the values a,b,and c from the equation 0=4x^2+2x-1 into the quadratic formula below
lutik1710 [3]

Given quadratic equation : 0 = 4x^2+2x- 1

Let us apply standard quadratic form 0=ax^2+bx+c

We know, quadratic formula

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

a = 4

b = 2

c= -1

Now we plug in all the values in quadratic formula

x = \frac{-b+-\sqrt{b^2-4ac}}{2a} \\ x = \frac{-2+-\sqrt{2^2-4(4)(-1)}}{2(4)}\\ x = \frac{-2+-\sqrt{18}}{8}.

<h3>The above one is the substitution of values of a,b,c in quadratic formula.</h3>
4 0
3 years ago
Read 2 more answers
Math math math!!!! :/
vekshin1

the answer is B your welcome

6 0
3 years ago
Read 2 more answers
can somebody please answer these, my last post didn’t show the questions lol sorry but i really need help. please help and show
soldi70 [24.7K]

Answer:

hi answer is 666666 I am very sad:(

3 0
3 years ago
whats th awnser if -(6×-5)=-6×+13 is that no solution,infinite solution,×=17/12,×=-17/12 please help me
Luba_88 [7]
Expanding the parentheses:-
-6x + 30 = -6x + 13
    +6x         + 6x

30 = 13
which is obviously absurd so the answer is No Solution.
4 0
3 years ago
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