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3 years ago

What is 12.1 rounded to the nearest whole number

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

3 0

Since 0.1 is less than 0.5, we could ignore the effect and so 12.1 is rounded to 12

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What are the domain and range of this function? y= (x+3)² - 5

Katarina [22]

Hello!

$\bf y = ( x + 3 )^{2} - 5$

- Separate the function into parts to determine the domain of each part.

$\bf ( x + 3 )^{2} \\ x + 3 \\ 5$

- The domain of a polynomial function is the set of all real numbers.

$\bf x ∈ ℝ$

Domain: ( -∞; ∞ )

$\bf y = ( x + 3 )^{2} - 5$

- Write the second degree function in standard form.

$\bf y = x^{2} + 6x + 4$

- Identifies the coefficients a and b of the second degree function.

$\bf a = 1, b = 6$

- Find the x coordinate of the vertex by substituting a = 1 and b = 6 in x = -b / 2a.

$\bf x = -\frac{6}{2×1}$

$\bf x = -\frac{6}{2}$

$\bf x = -3$

- Calculates the value of the function for x = -3.

$\bf y = ( x + 3 )^{2} - 5$

$\bf y = -5$

Range: ( -3; -5 )

Answer: No answer

Good luck! :)

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3 years ago

4 cents per day= ? dollars per year

pshichka [43]

4 x 365 = 1460 cents per year. 14.60

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3 years ago

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4(6x^3-4x^2+7x+1)-9(4x^3-2x^2-6x+1

eimsori [14]

Answer:not the answer

Step-by-step explanation:

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4 years ago

A rectangular sandbox has a width of 555 feet. The sandbox is 555 times as long as it is wide.

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Width = 555 ft.
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pantera1 [17]

Answer:

Step-by-step explanation:

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first of all, it means it includes the line (the "=" part).

that eliminates B and C.

then just look at the line function itself :

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y = x + 2

and now

y >= x + 2

so, everything above the line (and again including the line), as every y value greater than or equal to the result of the line function is valid.

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3 years ago