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2 years ago

=

Mathematics

1 answer:

irina [24]2 years ago

5 0

Answer:

A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.

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What is the justification for the first step in proving the formula for factoring the sum of cubes?

Anna11 [10]

Explanation:

The formula isnt correctly written, it should state:

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

You have to start from $(a+b)(a^2-ab+b^2)$ and end in a³+b³. On your first step, you need to use the distributive property.

$(a+b)(a^2-ab+b^2) = a*(a^2-ab+b^2) + b*(a^2-ab+b^2)$

This is equal to

$a*a^2-a*(ab) + a*b^2 + b*a^2-b*(ab) + b*b^2 = a^3 - a^2b + ab^2 +ba^2 -b^2a +b^3$

Note that the second term, -a²b, is cancelled by the fourth term, ba², and the third term, ab², is cancelled by the fifht term, -b²a. Therefore, the final result is a³+b³, as we wanted to.

5 0

3 years ago

cattie started with 12 ounces of water when she began her walk when she finished walking she had 2 1/4 ounces of water left how

Blizzard [7]

It is 9 3/4 because 12- 2 1/4 is 9 /14

6 0

3 years ago

# of yeast cells double every 4 hours how long will it take for 6billion cells

VLD [36.1K]

Answer:

Step-by-step explanation:

0.25

2×5

0.25×10

=2.5

;4×6

=24

:2.5×24

=60

6 0

2 years ago

Someone plz help me :(

LiRa [457]

Hey there ;-)

It will be -13,

as the other numbers can also be there in the inner circle.

By Benjemin ☺️

6 0

2 years ago

Please help would be appreciated

yKpoI14uk [10]

Answer:

The total volume of the whole figure is 576m³.

Step-by-step explanation:

First find the volume for the first figure.

Volume of a Rectangular Prism (formula): L•W•H

V = (15m)(12m)(2m)

V = 360m³

Now, find the volume for the second figure.

V = (6m)(12m)(3m)

V = 216m³

Finally, just add both volumes to find the total volume of the entire figure.

Vt = 216m³ + 360m³

Vt = 576m³

5 0

2 years ago