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2 years ago

Flora drew the following graph to answer the question. What was her mistake when she drew her graph?

Mathematics

1 answer:

slamgirl [31]2 years ago

7 0

Answer:

She drew the graph too steep, if she is going down at a constant rate of 300 ft per hour, at 1 hour she would be at 2,700 ft. it would take her about 10 hours to get down the mountain.

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!! Multiply. (7x + 3)(4x − 5)

Anni [7]

$(7x + 3)(4x -5)$

$7x*4x+7x(-5)+3*4x+3(-5)$

$7*4xx-7*5x+3*4x-3*5$

$=28x^2-23x-15$

Hope this helps!

Thanks!

-Charlie

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3 years ago

Please help with number 9

RUDIKE [14]

This is the answer i got 147

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2 years ago

Tiana can clear a football field of debris in 3 hours. Jacob can clear the same field in 2 hours. If they decide to clear the fi

Lapatulllka [165]

Let us determine each of their rates of work:

Since Tiana can clear the field in 3 hours, meaning she can do 1/3 of the work per hour.

In the same way, Jacob can do 1/2 of the work per hour.

Now, what would be the rate of work if they were working together? Let's look at it like this:

Hours to complete the job:
Tiana = 3
Jacob = 2
Together = t

Work done per hour:
Tiana = 1/3
Jacob = 1/2
Together = 1/t

If you add their labor together:

1/3 + 1/2 = 1/t
5/6 = 1/t
t = 6/2 = 1.2

Together, they can clear the field in 1.2 hours.

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3 years ago

Read 2 more answers

24. a rate in which the second quantity. In the comparison is one unit.

natima [27]

24. unit rate
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26. surface area
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28. supplementary angles
29. variable
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3 years ago

Read 2 more answers

A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the

bagirrra123 [75]

Answer:

In order to maximize profit, the company should sell each widget at $22.68.

Step-by-step explanation:

The amount of profit y made by the company for selling widgets at x price is given by the equation:

$y=-34x^2+1542x-10037$

And we want to find to price for which the company should sell in order to maximize the profit.

Since our equation is a quadratic with a negative leading coefficient, its maximum will occur at the vertex point.

The vertex of a quadratic is given by the formulas:

$\displaystyle \text{Vertex}=\left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)$

In this case, a = -34, b = 1542, and c = -10037.

Find the x-coordinate of the vertex:

$\displaystyle x=-\frac{(1542)}{2(-34)}=\frac{771}{34}\approx \$22.68$

So, in order to maximize profit, the company should sell each widget at $22.68.

Extra Notes:

In order to find the maximum profit, substitute the price back into the equation:

$\displaystyle y\left(\frac{771}{34}\right)\approx\$7446.56$

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3 years ago