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3 years ago

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A customer purchase aced items in your store totaling $12.64. They hand you three $5.00 bills. How much change would you owe the

m?

1 answer:

maw [93]3 years ago

3 0

2.36
Hope this helps:)

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To solve a system of equations, you can replace a ____________with an equal value or expression.

Ludmilka [50]

Answer:

Variable

Step-by-step explanation:

If you can substitute a unknown variable with another expression that is equal, you can then solve for another variable, and with that equal expression, solve for the first variable.

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3 years ago

Answer the questions below about the quadratic function.f(x) = -2x² - 4x

Juli2301 [7.4K]

We are given the function below;

$f(x)=-2x^2-4x$

PART A

We then proceed to find if the function has a minimum or maximum value. To find if the function has a minimum or maximum value. If the x^2 coefficient is positive, the function has a minimum. If it is negative, the function has a maximum.

ANSWER: From the above, we can see that x^2 is negative, hence the function has a maximum

PART B and C

To find the minimum or maximum value, we would plot the graph of the f(x). The graph can be seen below.

From the graph, the black point helps answer part A and part B.

ANSWER: The function's maximum value is f(x)=2.

This is the point where the slope of the graph is equal to zero

ANSWER: The maximum value then occurs at x= -1

We can also solve this by differentiating the function.

$\begin{gathered} f(x)=-2x^2-4x \\ f^{\prime}(x)=-4x-4 \\ At\xi maxmum\text{ }f^{\prime}(x)=0 \\ -4x-4=0 \\ -4x=4 \\ x=-\frac{4}{4} \\ x=-1 \\ \therefore\text{The max}imum\text{ value occurs at x=-1} \\ \text{Inserting the value of x into the function, we have} \\ f(x)=-2(-1)^2-4(-1) \\ f(x)=-2+4 \\ f(x)=2 \\ \therefore\text{The function max}imum\text{ value is 2} \end{gathered}$

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1 year ago

Find the slope of the line that contains (−9, 1) and (3, 6).

Neko [114]

Answer:

5/12

Step-by-step explanation:

slope is $\frac{1y-2y}{1x-2x}$

so $\frac{6 - 1}{3 - (-9)}$ and that is 5/12

Please mark brainliest!!! Thanks.

6 0

3 years ago

Find the amount of money accumulated if you invested $25,000 at 4.3% interest for 8 years compounded continuously .

MArishka [77]

The appropriate formula for the accumulated amount (A) for a given principal (P), interest rate (r), and time period (t) is ...

... A = P·e^(rt)

Filling in the given numbers and doing the arithmetic, we get

... A = $25,000·e^(.043·8) ≈ $35,264.46

8 0

3 years ago

Plot (4, −34) on the coordinate plane.

Lyrx [107]

Answer:

None

Step-by-step explanation:

Think about it. 4 is the x axis. -34 is the y axis. It will be located in quadrant IV.

8 0

3 years ago

Read 2 more answers