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ryzh [129]
3 years ago
6

A single tree produces about 2.6 x 10^2 lb of oxygen each year.The Amazon rainforest has about 3.9 x 10^11 trees.About how many

pounds of oxygen are produced in the rainforest each year?
2.8x10__________ibs
Mathematics
1 answer:
Hitman42 [59]3 years ago
4 0
2.6e2*3.9e11=1.014e+14 pounds of oxygen per year.
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What is the sum of 3/7, 4/5, and 2/3 round to two decimal places?​
Anna11 [10]

Answer:

1.90

Step-by-step explanation:

You would want to use a calculator since you need decimal places.

Once you type it into the calculator you should get 1.8952380952.

Since you're trying to simplify to the second decimal place, look at the third number after the decimal.

The 5 rounds up the 9 to a ten, which is represented by the 0.

That then turns the 8 into a nine.

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3 years ago
Solve the logarithmic equation. Round to the nearest ten-thousandth if necessary. log(x+9)-log x=3
zheka24 [161]
(√6,0) (√5,-1) (-√6,0) (-√5,-1)
4 0
2 years ago
The cereal box is a rectangular prism find the surface of the box when the hight is 30cm width is 5cm length is 20cm
AfilCa [17]

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Step-by-step explanation:

3 0
3 years ago
Un alumno multiplica un número por 32 en lugar de multiplicarlo por 23, obteniendo un producto mayor en 54 al producto original.
romanna [79]

Answer:

La suma de cifras del producto original es igual a 12.

Step-by-step explanation:

De acuerdo a la información proporcionada, si multiplicas un número "x" por 32 su resultado sería igual al producto original "y" más 54 dado que dice que se obtiene un producto mayor en 54 al producto original, lo que se puede expresar de la siguiente forma:

32x=y+54

Además, se puede inferir a partir del enunciado que si el número x se hubiera multiplicado por 23 el resultado habría sido el producto original que lo denominamos como "y", por lo que puedes decir que:

y=23x

Ahora puedes reemplazar y=23x en 32x=y+54 y despejar x:

32x=23x+54

32x-23x=54

9x=54

x=54/9

x=6

Finalmente, puedes reemplazar el valor de x en y=23x:

y=23x

y=23*6

y=138

Suma de cifras: 1+3+8 = 12

De acuerdo a esto, la respuesta es que la suma de cifras es igual a 12.

5 0
2 years ago
What is <br> - 3/4 x ( -12 ) <br> please i need this by today
S_A_V [24]
-12 x -12 = 144 I’m pretty sure if not then it is something different
3 0
3 years ago
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