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Vlad [161]
3 years ago
14

Express the polynomial 2m^2-3+7m in standard form

Mathematics
1 answer:
NARA [144]3 years ago
6 0
Standard form is basically ordering it in order of decreasing powers, left to right, largest to biggest

powers of the placeholder, not of constants
we see we have 2nd degree and 1st
2>1
2m^2 then 7m^1 then -3m^0 or
2m^2+7m-3
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Which of the following rules should be use to find the area of a triangle?
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4 0
3 years ago
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katen-ka-za [31]

Answer:

  750 < p < 1500

Step-by-step explanation:

The total cost of the affair for p attendees is ...

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The average cost is that number divided by p. The answer choices suggest that "between" means that the cost per person cannot be 2.75 or 3.25. Applying the limits to the average cost, we get ...

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  2.75 < 750/p + 2.25 < 3.25 . . . . . . . . separating the fraction parts

  0.50 < 750/p < 1.00 . . . . . . . . . . . . . . subtract 2.25

  2 > p/750 > 1 . . . . . . . . . . . . . . . . . . . . . take the reciprocal*

  1500 > p > 750 . . . . . . . . matches choice 4

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* Taking the reciprocals of numbers with the same sign reverses their order:

  2 < 3   but   1/2 > 1/3

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An alternate approach to the solution would be to multiply by p:

  0.50p < 750 < 1.00p

To solve this requires it be made into two inequalities:

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and

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Then these would need to be recombined to form the answer:

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3 years ago
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4 0
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mrs_skeptik [129]

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7 0
3 years ago
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Please help! A-level maths.
astra-53 [7]

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\{k\mid 7\le k

4 0
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