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Ganezh [65]
3 years ago
13

it takes an air pump 4.0 minutes to fill a twin sized air mattress (39 by 8.75 by 75 inches). How long will it take to fill a qu

een sized mattress (60 by 8.75 by 80 inches)?
Mathematics
1 answer:
Ivahew [28]3 years ago
7 0

Volume of twin sized mattress =

39* 8.75* 75 = 25593.35 cubic inch

Volume of queen sized mattress =

60* 8.75* 80 = 42000 cubic inch

To fill 25593.35 cubic inch it takes 4 minutes

To fill 1 cubic inch it will take = \frac{4}{25593.35} minutes

So to fill 42000 cubic inch it will take = \frac{4}{25593.35} * 42000

= 6.56 minutes.



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Answer:

(14,\frac{-7}{2})

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
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<u>Algebra I</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

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Point (10, -20)

<u>Step 2: Find Midpoint</u>

Simply plug in your coordinates into the midpoint formula to find midpoint

  1. Substitute [MF]:                    (\frac{18+10}{2},\frac{13-20}{2})
  2. Add/Subtract:                       (\frac{28}{2},\frac{-7}{2})
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2 years ago
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ratelena [41]

Answer:

A.x(x+12) -7(x+12)

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Mid-segment and bottom side of the triangle is always parallel to each other, and parallel lines must have same slopes, so if their slopes are equal, then MN would be mid-segment of side AB in Triangle ABC

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