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Pani-rosa [81]
3 years ago
11

You have for bookshelves, each 2 1/3 feet wide. How many feet of wall space will all 4 take up if they are placed into end?

Mathematics
2 answers:
Sladkaya [172]3 years ago
4 0

Answer: 9 1/3

Step-by-step explanation: There are four of them and, assuming there is no space in between them, they all take up the same amount of space. So that means, if they were added up, it’d be 2 1/3 +2 1/3 + 2 1/3 +2 1/3. That can be simplified to 4 x (2 + 1/3). When multiplied, it equals 8 + 4/3=8 + 1 +1/3=9 + 1/3=9 1/3.

Maurinko [17]3 years ago
3 0

Step-by-step explanation:

2 1/3 × 4

1. Convert the fraction into an improper fraction

2 × 3 = 6 (2 times the denominator)

6 + 1 = 7 (the result plus the numerator)

So 2 1/3 = 7/3

2. Make 4 be divided by 1 so you can multiply across

7/3 × 4/1

3. Multiply across

(7×4)/(3×1)

4. Simplify

28/3

5. (Optional) Convert to a proper fraction

3 goes into 28 9 times with a remainder of 1 so it's 9 1/3

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ale4655 [162]

Answer: 0.000021 in scientific notation is

2.1 × 10-5

Step-by-step explanation:

All numbers in scientific notation or standard form are written in the form

m × 10n, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.

To convert 0.000021 into scientific notation, follow these steps:

Move the decimal 5 times to right in the number so that the resulting number, m = 2.1, is greater than or equal to 1 but less than 10

Since we moved the decimal to the right the exponent n is negative

n = -5

Write in the scientific notation form m × 10n

= 2.1 × 10-5

Therefore,

2.1 × 10-5 is the scientific notation form of 0.000021 number and 2.1e-5 is the scientific e-notation form for 0.000021

** Hope this helps you! Good Luck!

3 0
3 years ago
What 3/4 divided by 9
charle [14.2K]

Answer:

I got 1/12 or 0.083....

3 0
3 years ago
The first person to answer correctly gets BRAINLIEST!. (20 POINTS)
asambeis [7]

Answer:

y = 288 - 60x

Step-by-step explanation:

6 0
3 years ago
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Andru [333]

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Step-by-step explanation:

7 0
3 years ago
La funcion que representa el beneficio obtenido por una empresa si vende x unidades de uno de sus productos es f(x)= -70x^2+2800
DerKrebs [107]

Answer:

20

Step-by-step explanation:

La función es

f(x)=-70x^2+2800x-45000

Diferenciando con respecto a x obtenemos

f'(x)=-140x+2800

Igualar con cero

0=-140x+2800\\\Rightarrow x=\dfrac{2800}{140}\\\Rightarrow x=20

Doble derivada de la función

f''(x)=-140

Entonces, la función es máxima cuando el número de unidades vendidas,  x=20,

3 0
2 years ago
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