The earliest vascular plants were seedless, reproducing with _____ instead of seeds. a. cones b. flowers c. spores d. pollen

The earliest vascular plants were seedless, reproducing with SPORES instead of seeds.

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Asked 9/24/2012 8:37:11 AM

Updated 2/20/2018 10:57:42 AM

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Edited by jeifunk [2/20/2018 10:57:42 AM]

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The earliest vascular plants were seedless, reproducing with SPORES instead of seeds.

Added 2/20/2018 10:57:39 AM

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y^3 - 27 **Weegy:** 7 3/4 - 3/8 = 31/4 - 3/8; =62/8 - 3/8; = 59/8, as a mixed number 7 3/8 **User:** x^3y^3 + z^3 **Weegy:** The answer is "(xy + z) (x^2y^2 - xyz + z^2)." (More)

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Updated 105 days ago|6/18/2023 5:48:53 AM

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Solution:

a^3 - b^3 = (a - b)(a^2 + ab + b^2)

y^3 - 27 = (y - 3)(y^2 + 3y + 9)

So, the factored form of y^3 - 27 is (y - 3)(y^2 + 3y + 9).

a^3 - b^3 = (a - b)(a^2 + ab + b^2)

y^3 - 27 = (y - 3)(y^2 + 3y + 9)

So, the factored form of y^3 - 27 is (y - 3)(y^2 + 3y + 9).

Added 105 days ago|6/18/2023 5:48:01 AM

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The expression you provided, x^3y^3 + z^3, cannot be factored further using simple algebraic techniques. It is a sum of cubes, but there is no straightforward factorization formula for the sum of cubes like there is for the difference of cubes.

Therefore, x^3y^3 + z^3 remains as it is and cannot be simplified further.

Therefore, x^3y^3 + z^3 remains as it is and cannot be simplified further.

Added 105 days ago|6/18/2023 5:48:53 AM

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(12x2 + 7y3)(4x2 + 7y3)

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Updated 6/23/2014 3:57:21 PM

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(12x^2 + 7y^3)(4x^2 + 7y^3)

= 48x^4 + 84x^2y^3 + 28x^2y^3 + 49y^6

= 48x^4 + 112x^2y^3 + 49y^6

= 48x^4 + 84x^2y^3 + 28x^2y^3 + 49y^6

= 48x^4 + 112x^2y^3 + 49y^6

Added 6/23/2014 3:57:21 PM

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Female gametangia are called (archegonia,antheridia) while male gametangia are called (antheridia,archegonia )

Female gametangia are called ARCHEGONIA while male gametangia are called ANTHERIDIA.

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Updated 12/25/2014 3:19:01 PM

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Female gametangia are called ARCHEGONIA while male gametangia are called ANTHERIDIA.

Added 12/25/2014 3:19:01 PM

This answer has been confirmed as correct and helpful.

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