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azamat
3 years ago
5

Help me with this in the next 5 hours

Mathematics
2 answers:
zvonat [6]3 years ago
6 0
The answer is D -28
jenyasd209 [6]3 years ago
5 0

Answer:

<h2><em><u>-</u></em><em><u> </u></em><em><u>28</u></em></h2>

Step-by-step explanation:

2 {x}^{2} -  4 {y}^{2}

<em>By</em><em> </em><em>putting</em><em> </em><em>the</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>x</em><em> </em><em>=</em><em> </em><em>2</em><em> </em><em>and</em><em> </em><em>y</em><em> </em><em>=</em><em> </em><em>-3</em><em> </em><em>then</em><em>,</em>

= ( 2 \times {2}^{2})  - (4 \times  {( - 3)}^{2} )

= (2 \times 4) - (4 \times 9)

= 8 - 36

<em><u>= - 28 (Ans)</u></em>

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Answer:

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Step-by-step explanation:

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3 years ago
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Answer:

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<u>Function modeling</u>

Real-life situations often require the help of mathematics to model numerically what happens when the variables involved can change. It could even be used to predict some expected outcomes from those models.

The problem states Janice receives $.40 per pound when he recycles less or equal than 99 pounds of aluminum. If x is the number of recycled pounds, then the amount of money he receives is

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Note the function is not well constructed because there is a gap for x=100 where M is not defined. If we establish that for 100 pounds the payment is $0.5, then the second piece would include x=100

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3 years ago
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