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serg [7]
2 years ago
15

Density is calculated by dividing the mass by volume. A student measures the mass of an 8 cm3 object as 12.9g. What is the densi

ty of the object to the nearest tenths with proper units?
a.) 2 g/cm3
b.) 1.61 g/cm3
c.) 1.5 g/cm3
d.) 1.6 g/cm3
Mathematics
1 answer:
andrew11 [14]2 years ago
5 0
Answer: D

Density= mass/volume

12.9g/8cm3= 1.6 g/cm3
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Answer:

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Answer:

x = 39/74 - sqrt(1817)/74 or x = 39/74 + sqrt(1817)/74

Step-by-step explanation:

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y^2 - (257 y)/37 = -434/37

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y^2 - (257 y)/37 + 66049/5476 = 1817/5476

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Subtract 4 from both sides:

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Multiply both sides by -1:

x = 39/74 - sqrt(1817)/74 or y - 257/74 = -sqrt(1817)/74

Add 257/74 to both sides:

x = 39/74 - sqrt(1817)/74 or y = 257/74 - sqrt(1817)/74

Substitute back for y = 4 - x:

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Subtract 4 from both sides:

x = 39/74 - sqrt(1817)/74 or -x = -39/74 - sqrt(1817)/74

Multiply both sides by -1:

Answer:  x = 39/74 - sqrt(1817)/74 or x = 39/74 + sqrt(1817)/74

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