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2 years ago

The diagram below represent the rate of making copies on a copy machine. Which table represent this rate?

Mathematics

1 answer:

Nuetrik [128]2 years ago

6 0

Answer:

its B

Step-by-step explanation:

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= Test: Chapter 1-4 Test

pochemuha

Answer:

Step-by-step explanation:

the explanation on D

6 0

3 years ago

Select all expressions that are equivalent to 3x+5+4(x+2)+2<br>pls do not add a link <br>

enot [183]

Answer:

B and D

Step-by-step explanation:

$3x+5+4(x+2)+2 = 7x + 15$

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Clim_%7Bx%20%5Cto%200%20%28%5Cfrac%7Bx%28x-2%29%7D%7B2-2e%5E2x%7D%20%29" id="TexFormula1" ti

krek1111 [17]

Answer: 0

Step-by-step explanation:

Substituting in x=0, we get

$\frac{0(0-2)}{2-2e^{2}(0)}=0$

7 0

2 years ago

Simplify: 2 (x+6) + 8x<br><br> when x = 3

IceJOKER [234]

Answer:42

Step-by-step explanation:

2(3+6)+(8)(3)

=(2)(9)+(8)(3)

=18+(8)(3)

=18+24

=42

leave a like if this helped please

8 0

3 years ago

Find the minimum value of the function f(x)=x^2+5x-6

mash [69]

<h3><u>Explanation</u></h3>

Method 1 (Formula)

$\begin{cases}h = - \frac{b}{2a} \\ k = \frac{4ac - {b}^{2} }{2a} \end{cases}$

The vertex of Parabola is the maximum/minimum point depending on the value of a.

Find Vertex

<u>h-value</u>

$h = - \frac{5}{2(1)} \\ h = - \frac{5}{2}$

<u>k-value</u>

$k = \frac{4(1)( - 6) - {(5)}^{2} }{4(1)} \\ k = \frac{ - 24 - 25}{4} \\ k = \frac{ - 49}{4} \\ k = - \frac{49}{4}$

The minimum value is the value of k. Therefore the minimum value is - 49/4 at x = -5/2.

Method 2 (Derivative)

This is Calculus method. We simply differentiate the function then substitute y' = 0.

Differentiate Function

$f'(x) = 2 {x}^{2 - 1} + {5x}^{1 - 1} - 0 \\ f'(x) = 2x + 5$

Substitute f'(x) = 0

$0 = 2x + 5 \\ - 5 = 2x \\ - \frac{5}{2} = x$

Substitute x = -5/2 in the original equation.

$f(x) = {( - \frac{5}{2} )}^{2} + 5( - \frac{5}{2} ) - 6 \\ f(x) = \frac{25}{4} - \frac{25}{2} - 6 \\ f(x) = \frac{25}{4} - \frac{50}{4} - \frac{24}{4} \\ f(x) = \frac{25}{4} - \frac{74}{4} \\ f(x) = - \frac{49}{4}$

<h3><u>Answer</u><u /></h3>

<u> $\sf{the \: \: minimum \: \: value \: \: is \: \: - \frac{49}{4} \: \: at \: \: x = - \frac{5}{2} }$ </u>

4 0

3 years ago