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telo118 [61]
3 years ago
7

The graph of a linear function is shown. A coordinate plane with a straight line passing through (negative 4, 2), (0, 0), and (4

, negative 2). Which word describes the slope of the line? positive negative zero undefined
HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ PLS HELP :)
Mathematics
2 answers:
Brut [27]3 years ago
8 0

Answer:

the answer is B

Step-by-step explanation:

White raven [17]3 years ago
7 0

The slope of the line is m=-\frac{1}{2}

Explanation:

Given that a coordinate plane with a straight line passing through the points (-4,2) , (0,0) and (4,-2)

We need to determine the slope of the line.

The slope of the line can be determined using the formula,

m=\frac{y_2-y_1}{x_2-x_1}

Since, the points (-4,2) , (0,0) and (4,-2) lie on the straight line and the slope of all the points in a straight line have the same slope.

Hence, let us consider the points (-4,2) and (0,0)

Let us substitute these points in the slope formula, we have,

m=\frac{0-2}{0+4}

Simplifying, we get,

m=\frac{-2}{4}

Dividing, we get,

m=-\frac{1}{2}

Hence, the slope of the line is m=-\frac{1}{2}

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PLEASE HELP!!!!<br> I need to solve for a, b, and c
nirvana33 [79]

Answer:

  • 25000 seats in section A
  • 14100 seats in sectin B
  • 10900 seats in section C

Step-by-step explanation:

The problem statement tells you half the total number of seats are in section A, so you already know that there are 25000 A seats. The revenue from those seats is

... 25000×$25 = $625,000

so the revenue from B and C seats must total

... $1,070,500 - 625,000 = $445,500

If all 25000 of the B/C seats were C seats, the revenue would be

... 25000×$15 = $375,000

The actual revenue from those seats is $445,500 -375,000 = $70,500 more than that. We know each B seat generates $5 more revenue, so there must be ...

... $70,500/$5 = 14,100 . . . . B seats

Then the balance of the 25000 B and C seats are C seats:

... 25,000 - 14,100 = 10,900 . . . . C seats

_____

<em>Alternate Solution Method</em>

The new Brainly answer format requires the answer be supplied before the working. In order to find the answer quickly so that I can fill in that section, I used a matrix method for solving the problem. The problem equations can be written ...

  • a + b + c = 50000
  • a - b - c = 0
  • 25a + 20b + 15c = 1070500

so the augmented matrix is ...

\left[\begin{array}{cccc}1&1&1&50000\\1&-1&-1&0\\25&20&15&1070500\end{array}\right]

A graphing calculator can be used to find the solution to this, generally using a function that produces the reduced row-echelon form. The attachment shows the solution using a TI-84 calculator.

___

<em>Comment on the Working</em>

Since the number of A seats is equal to the total of B and C seats, the number of A seats must be half the total number of stadium seats. Having figured that out, the problem is reduced to one of finding the mix of B and C seats that will produce the remaining revenue.

As with many mixture problems, it is convenient to look at differences. Start with the assumption that all of the desired revenue comes from the least contributor. Here, that is C seats. Then figure the difference that using a B seat makes ($20 -15 = $5) and the difference of the actual revenue and the amount that you got by assuming all C seats: 445,500 -375,000 = 70,500. Since replacing a C seat by a B seat adds $5 to the revenue, it is easy to figure the number of such replacements required in order to raise the revenue by $70,500.

If you write the equation for B seats, you find the solution to the equation mirrors this verbal description:

... 20b + 15(25000-b) = 445,500

... 5b = 445,500 - 375000 . . . . simplify, subtract 375000

... b = 70500/5 = 14100

8 0
2 years ago
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Over [174]

Answer:

15.25×3

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3 0
3 years ago
What is 18÷(-9) equal
Westkost [7]

18 divided by (-9) equals -2.


4 0
3 years ago
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Answer:

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Step-by-step explanation:

6 0
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A​ whale-watching tour boat cannot operate if the total passenger weight is more than 3 comma 150 comma 000 grams. What is the m
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Answer:

45

Step-by-step explanation:

7 0
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