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FrozenT [24]
4 years ago
11

Is 12/30 and 18/45 proportional, or not proportional?

Mathematics
2 answers:
34kurt4 years ago
5 0

12/30 = 18/45, so first you're going to cross multiply and you'll get (30)(18) = (12)(45). Then you can see that 540 = 540 same number so they're proportional...

BTW THIS WAY IS A LOT EASIER.

12/30 = 2/5

18/45 = 2/5

So yes, in summary, they're proportional to each other. Hope this helps, have a BLESSED and wonderful day! :-)

Lostsunrise [7]4 years ago
4 0

Answer:

proportional

Step-by-step explanation:

12/30 multiplied by a factor of 1.5 is 18/45 so it is proportional

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Jovita bought 3 1/3 cubic yards of mulch for the garden. She will need 2.5 cubic yards for the flowerbeds. How much mulch is lef
salantis [7]

1/3  =  0.333... (repeating)

-- Jovita bought  3.333 cubic yards.

-- She needs  2.5 cubic yards for the flowers.

-- The rest will be left for the veggies.
    If she doesn't spill any, that will be

                 (3.333)  minus (2.5)  =  0.833... (repeating) cubic yards.

6 0
3 years ago
What formula should be used when factoring the expressionn x^3+27
kobusy [5.1K]

x³ + 27 which can be written as x³ + 3³

It is in the form of a³ + b³ = ( a + b) ( a² - ab + b²)

so

x³ + 3³

= (x+ 3) (x² - x * 3 + 3²)

= ( x + 3 ) ( x² - 3x + 9)

Hope this helps you.

5 0
3 years ago
What is the diameter of a sphere that has a diameter of 14cm?
xenn [34]
D=2r
              <span> diameter= 14cm
so, radius= 14/2= 7cm 

</span>
8 0
3 years ago
An expression is shown below.
Natalka [10]

Answer:

see step-by-step

Step-by-step explanation:

It's not clear from your notation, so I will provide 2 answers.

3√(47x) = 24√(47)

3√(47)√x = 24√(47)

Divide both sides by √(47):  3√x = 24

Divide both sides by 3:  √x = 8

Square both sides:   x = 64

3√(47)x = 24√(47)

Divide both sides by √(47):  3x = 24

Divide both sides by 3:  x = 8

6 0
3 years ago
Haaalllppp pleaseeeeeeee
Vinil7 [7]

Answer:

A. 6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

4² - (x + 8)

x = 2

<u>Step 2: Simplify</u>

  1. Evaluate exponents:                    16 - (x + 8)
  2. Distribute negative:                      16 - x - 8
  3. Combine like terms:                     8 - x

<u>Step 3: Evaluate</u>

  1. Substitute in <em>x</em>:                    8 - 2
  2. Subtract:                              6
5 0
3 years ago
Read 2 more answers
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