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Fofino [41]
3 years ago
12

2) -84 = 6(4a – 2) A) {2} C) No solution. B) {1} D) -3)

Mathematics
1 answer:
LenaWriter [7]3 years ago
5 0

In this question, you're solving for a.

Solve for a:

-84 = 6(4a - 2)

<em>Distribute the 6 to the variables inside the parenthesis</em>

-84 = 24a - 12

<em>Add 12 to both sides</em>

-72 = 24a

<em>Divide both sides by 24</em>

-3 = a

This means that answer choice D would be the correct answer.

Answer:

D). -3

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Answer:

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x = 20

or

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Step-by-step explanation:

Let's write the Profit equation by subtracting the cost function from the revenue one:

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Now, we set to find the production level "x" to give us a profit of $ 700:

Profit(x)=-0.5\,x^2+80\,x-700\\700=-0.5\,x^2+80x-700\\0.5\,x^2-80\,x+1400=0

So we solve this quadratic equation using the quadratic formula:

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6 0
4 years ago
When a system of linear equations is graphed, how is the graph of each equation related to the solutions of that equation?​
Kay [80]

Answer:

The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect.

Step-by-step explanation:

7 0
3 years ago
There are 3 urns A, B and C each containing a total of 10 marbles of which 2, 7 and 4 respectively are red. One of the urns is s
sleet_krkn [62]
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======================================================

Explanation:

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7 red marbles are in urn B out of 2+7+4 = 13 total red marbles.

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