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Inessa [10]
3 years ago
7

What is the common difference of the arithmetic sequence? −10x, −7x, −4x, −x, 2x, 5x, ... A) −3x B) −3 C) 3 D) 3x

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
3 0

Answer:

  D)  3x

Step-by-step explanation:

The difference of adjacent terms is ...

  (-7x) -(-10x) = (-7+10)x = 3x . . . . the common difference

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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

Es decir, un mol de CO₂, pesa 44 gramos.

7 0
3 years ago
The approximation of which irrational number is shown by point R on the number line?
Alenkasestr [34]

Answer:

B it is very simple my friend

Step-by-step explanation:

3.75 × 3.75 = 14.0

6 0
2 years ago
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
Anni [7]

Answer: The rocket will reach its max after 4 seconds

Step-by-step explanation:

Hi, to find the maximum height, we have to set the first derivative of the equation equal to zero.

y=-16x^2+128x+136

0 = (2)-16x +128  

0= -32x+128

Solving for x:

32x = 128

x = 128/32

x = 4 seconds

The rocket will reach its max after 4 seconds

Feel free to ask for more if needed or if you did not understand something.

7 0
3 years ago
30 points!!
fenix001 [56]

Answer:

B

Step-by-step explanation:

7 0
3 years ago
I'm having trouble with this:<br><br>12b+3=-2b-4          I have to simplify the problem
ololo11 [35]
12b+3=-2b-4
12b+2b=-4-3
14b=-7/:14
b=-7/(14)
b=-1/2
4 0
3 years ago
Read 2 more answers
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