2 years ago

Jan's flower garden has only daffodils and tulips

Mathematics

1 answer:

VMariaS [17]2 years ago

3 0

12/27 tulips to total flowers

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Divide the number 20 into two parts (not necessarily integers) in a way that makes the product of one part with the square of th

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Answer:

13 1/3 and 6 2/3.

Step-by-step explanation:

Let the 2 parts be x and (20 - x).

So x^2(20 - x) must be a maximum.

y = x^2(20 - x)

y = 20x^2 - x^3

Finding the derivative):

y' = 40x - 3x^2 = 0 for maxm/minm value.

x( 40 - 3x) = 0

40 - 3x = 0

3x = 40

x = 40/3.

This is a maximum because the second derivative y" = 40 - 6x = 40 - 6(40/3)) is negative.

So the 2 numbers are 13 1/3 and 6 2/3.

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2 years ago

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frez [133]

Answer:

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Step-by-step explanation:

x is always = to 1

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What is the answer to the equation 3(x+4.5)=36?

kozerog [31]

Answer:

$x = 7.5$

Step-by-step explanation:

$3(x + 4.5) = 36$

$3x + 13.5 = 36$

$3x = 36 - 13.5$

$3x = 22.5$

$x = \frac{22.5}{3}$

$x = 7.5$

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Rational numbers are numbers that can be turned into fractions. So A, C, D, E, F, G, H, and I are rational numbers

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