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3 years ago

9

Max is painting a fence.The table shows the number of square feet he painted after various numbers of minutes. What is the rate

of change?
Amount of Fence Max Painted
Minutes
Square Feet Painted
1
3.5
2
7
3
10.5
4
14
5
17.5
–3.5
–1
1
3.5

2 answers:

maksim [4K]3 years ago

7 0

-3.5 is the correct answer

ohaa [14]3 years ago

3 0

Answer:

3.5

Step-by-step explanation:

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Three out of five students wore green on st Patrick's day what percent of the stundents wore green

Katen [24]

3/5 as a percentage would be 60%.

6 0

3 years ago

Read 2 more answers

A company's profit C (in thousands of dollars) can be modeled by the polynomial function C = - 5x ^ 3 + 6x ^ 2 + 15x , where x i

steposvetlana [31]

Answer:

849 items.

Step-by-step explanation:

Given that the profit C (in thousands of dollars) for x thousands of items related as

$C = - 5x ^ 3 + 6x ^ 2 + 15x \\\\\Rightarrow -5x^3+6x^2+15x -C=0\cdots(i)$

As the profit is $14,000 for producing 2000 items, so

C= 14 thousand dollars and

x= 2 thousand items.

Putting C= 14 in the equation ( we have),

$-5x^3+6x^2+15x -14=0\cdots(ii)$

Now, x=2 is one of the solutions to the equation (ii), so (x-2) is a factor of the equation (ii), we have

$(x-2)(-5x^2-4x+7)=0 \\\\\Rightarrow x-2=2 \; or \; -5x^2-4x+7=0$

We have the given solution for x-2=0, so sloving -5x^2-4x+7=0 for other solutions.

$-5x^2-4x+7=0 \\\\\Rightarrow x= \frac {-(-4)\pm \sqrt {(-4)^2-4\times (-5)7}}{2\times (-5)} \\\\\Rightarrow x= \frac {4\pm \sqrt {156}}{2\times (-5)} \\\\\Rightarrow x= \frac {4\pm 12.49}{2\times (-5)} \\\\\Rightarrow x = \frac {4+ 12.49}{2\times (-5)}, \frac {4- 12.49}{2\times (-5)} \\\\\Rightarrow x = -1.649, 0.849$

As the number of items cant be negative, so x= 0.849 thousand is the other number of items.

Hence, the other number of items for the same profit is 849 items.

4 0

3 years ago

Answer please thanks

Nezavi [6.7K]

Answer:

too blurry pls send new pic

Step-by-step explanation:

4 0

4 years ago

Which equation shows that z is directly proportion to the cube of x and inversely

lozanna [386]

Answer:

z = $\frac{kx^3}{y^2}$

Step-by-step explanation:

Given that z is directly proportional to x³ and inversely proportional to y²

Then the equation relating them is

z = $\frac{kx^3}{y^2}$ ← k is the constant of proportionality

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3 years ago

Peter used a $5 gift certificate to help pay for his lunch after adding a 15% tip to the cost of his meal Peter still had to pay

kogti [31]

So, because he used a five dollar certificate, the total price of his meal was 7.36. Now we need to find the price of his food. Because he gave the waiters a fifteen percent tip, his meal is 85% of the total cost:
0.85(7.36) = 6.256
We can round up:
PETER SPENT $6.26 ON HIS MEAL

5 0

3 years ago