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2 years ago

10. Given the function below, what is f(3)? f(x) = 2x2 - x-5

Mathematics

1 answer:

Nostrana [21]2 years ago

8 0

Answer:

f(3) = 10

Step-by-step explanation:

f(3) = 2(3)^2 - (3) - 5

f(3) = 2(9) - (3) - 5

f(3) = 18 - 3 - 5

f(3) = 10

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PLZ HELP!!!!!!!!!!!!!!!!!!

Inessa05 [86]

Answer:

D.) If soccer balls are sold for $2.05 or $14.61 each, the store will break even but will not make a profit.

Step-by-step explanation:

Let us assume x = selling price of each soccer ball

y = daily profit earned from selling of soccer balls

Given that

Y= $-6x^2+100x-180$

where,

a = -6

b = 100

c = -180

Now we have to applied the formula which is as follows

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

$= \frac{-100\pm\sqrt{100^2-4\times -6\times -180}}{2\times -6}$$

$= \frac{-100\pm\sqrt{10,000 - 4,320}}{-12}$$

$= \frac{-100\pm\sqrt{5.680}}{-12}$$

$= \frac{-100 + 75.3658}{-12}$$

$= \frac{24.6342}{-12}$

x^1 = -2.05285

Now

x^2 $= \frac{-100 - 75.3658}{-12}$$

$= \frac{- 175.3658}{-12}$

x^2 = 14.6138

Based on this the option D is most appropriate as per the given situation

4 0

2 years ago

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The total weight of the fish tank in a tank of tropical fish at fish in fur was seven eights pounds. Each with 164 pounds. After

slavikrds [6]

386 is the answer.................................

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2 years ago

4-s/12=-6<br> Please help me!!!

Sveta_85 [38]

$4-\dfrac{s}{12}=6$
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2 years ago

A circle has a radius of 3. An arc in this circle has a central angle of 20. What is the length of the arc?

Ede4ka [16]

Circumference of whole circle =
$\pi \times 3 \times 2$
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3 years ago

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Evaluate the following expressions, and justify your answers.<br> WhatPower5(1)

Zepler [3.9K]

Answer:

correct answer is 0

Step-by-step explanation:

given data as per question

WhatPower5(1)

to find out

Evaluate the expressions WhatPower5(1)

solution

so here we know that whatpower mean exponent of equation so we get by given equation

we know whatpower5(1) = 0

because here

we know that anything exponent 0 is equal to 0

so here we can say that

that is $5^{0}$ = 1

so that the exponent is here 0 of 5 that become 1

so correct answer is 0

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3 years ago