3 years ago

(2x^2+5x-7)+(3-4x^2+6x) help please due 11:59 find sum

Mathematics

2 answers:

9966 [12]3 years ago

7 0

Answer:

-2 $x^{2}$ +11x-4

Step-by-step explanation:

(2 $x^{2}$ +5x-7)+(3-4 $x^{2}$ +6x)

2 $x^{2}$ -4 $x^{2}$ +5x+6x-7+3

-2 $x^{2}$ +11x-4

vodomira [7]3 years ago

7 0

Answer:

-2x^2+11x-4

Step-by-step explanation:

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sweet-ann [11.9K]

Answer: The volume of given substance is $2.2 cm^{3}$ .

Step-by-step explanation:

Given: Density = 10.7 $g/cm^{3}$

Mass = 23.54 g

Density of a substance is the mass of substance divided by its volume.

Mathematically, $Density = \frac{mass}{volume}$

Substitute the values into above formula to calculate volume as follows.

$Density = \frac{mass}{volume}\\10.7 g/cm^{3} = \frac{23.54 g}{volume}\\volume = \frac{23.54 g}{10.7 g/cm^{3}}\\= 2.2 cm^{3}$

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3 years ago

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3 years ago

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4 years ago

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Afina-wow [57]

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3 years ago

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Step-by-step explanation:

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3 years ago

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