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balu736 [363]
2 years ago
13

Evaluate. ( 2/5 )2 · 52 + 10

Mathematics
1 answer:
Yuki888 [10]2 years ago
8 0
Your answer would be 51.6
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The population will be 56,275 people.
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3 years ago
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Determina la masa molar y el volumen que ocupa la siguiente sustancia CO2, si su masa es de 28 gr. *
balandron [24]

Answer:

Para el CO₂ sabemos que:

densidad = 0,001976 g/cm³

Sabemos que:

densidad = masa/volumen

Entonces, si tenemos una masa de 28 g, podemos escribir:

volumen = masa/densidad

volumen = (28g)/(0,001976 g/cm³) = 14,170 cm^3

Para obtener la masa molar (es decir, la masa de un mol de esta sustancia) simplemente sumamos la masa de un mol de cada componente.

Carbono: tiene una masa molar de 12 g/mol

Oxígeno: tiene una masa molar de 16 g/mol (y tenemos dos oxígenos)

entonces la masa molar va a ser:

masa molar = 12g/mol + 2*16g/mol = 44 g/mol

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7 0
3 years ago
A shop owner bought 30 files and some diaries .he paid $82.50 for the files.each diary cost 10 times as much as a file.what was
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➷ Divide total cost by the number of files:

82.50/30 = 2.75

Multiply by 10:

2.75 x 10 = 25.5

The cost was $27.50

➶ Hope This Helps You!

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2 years ago
What is the absolute change of 12.1 inches to 7.8 inches?
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4.3

Step-by-step explanation:

12.1-7.8= 4.3

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2 years ago
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Help!!!
Arlecino [84]
The answer is 30. 5/10 is equal to 15/30
5 0
2 years ago
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