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4 years ago

Find the x-intercepts of the following polynomial function'' f (x) = x^2 - 2x - 80

Mathematics

1 answer:

pychu [463]4 years ago

7 0

Answer:

(-8 , 0)

(10 , 0)

Step-by-step explanation:

(-8)^2 - 2(-8) - 80 = 0

(10)^2 - 2(10) - 80 = 0

then (-8 , 0) and (10 , 0) are x-intercepts Of the polynomial f

the others are not because (for instance):

(8)^2-2(8)-80 =

:)-32

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choosing a vowel from the word counting and a consonant from the word Prime then give the total number of outcomes

yKpoI14uk [10]

Answer:

Step-by-step explanation:

Total letters in word 'COUNTING'=8

Number of vowels in word 'COUNTING'=3(O,U,I)

Total letter in word 'PRIME'=5

Number of consonants in word 'PRIME'=3(P,R,M)

We have to find the total number of outcomes.

Number of choice for O=3(P,R,M)

Number of choice for U=3(P,R,M)

Number of choice for i=3(P,R,M)

Number of outcomes of choosing a vowel from the word 'COUNTING' and a consonant from the word 'PRIME'=3+3+3

Total number of outcome=9

6 0

3 years ago

Zhen is an audiobook narrator. The table gives some completed audio lengths and the amount of time Zhen spends researching, reco

mestny [16]

Answer:

c. Zhen spends 6 1/2 hours working per audiobook.

Step-by-step explanation:

The table below gives some completed audio lengths and the amount of time Zhen spends on the audiobook.

$\left|\begin{array}{c|c}$Completed length of audiobook (hours) &$Working time (hours)\\---------&--------\\1&6\frac{1}{2} \\\\3\frac{1}{2}&22\frac{3}{4}\\\\7&45\frac{1}{2}\\\\10&65\end{array}\right|$

We observe that from the table, in 6.5 hours, Zhen completes 1 audiobook.

In fact, across the table:

$\dfrac{6\frac{1}{2}}{1}=\dfrac{22\frac{3}{4}}{3\frac{1}{2}}=\dfrac{65}{10}=6\dfrac{1}{2} $ hour per audiobook$

Therefore, in this situation, 6.5 hours mean that Zhen spends 6.5 hours working per audiobook.

The correct option is C.

5 0

3 years ago

Read 2 more answers

Help me solve this thing por favor i only came for the answers

NeTakaya

Druvjobftjcgtytdsrygg

6 0

3 years ago

What’s the lateral surface area of the figure below?

storchak [24]

Answer:

Solve

Step-by-step explanation:

To find the surface area of a triangular prism, use the formula Surface Area = L + 2B, where L is the lateral area and B is the area of the base. Find the lateral area by calculating the perimeter of the base and multiply it by the height of the prism.

5 0

4 years ago

3.Escribe un polinomio que cumpla con las condiciones dadas

Free_Kalibri [48]

Answer: 4x^6

Step-by-step explanation:

Para responder esta pregunta debemos conocer que es un monomio, su grado y el coeficiente.

Un monomio es un polinomio que posee 1 solo termino, el grado se refiera a la potencia a la que esta elevada la variable (en este caso usaremos la letra x)

El coeficiente es el número que está a la izquierda de una variable:

Entonces:

Monomio de grado 6 y coeficiente 4

4x^6

7 0

3 years ago