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3 years ago

Factor 81p² - 1 a. (3p+1) (9p-1) b. (9p+1) (p-1) c. (9p+1) (9p-9) d. (9p+1) (9p-1)

Mathematics

1 answer:

Alex73 [517]3 years ago

3 0

Answer:

Step-by-step explanation:

81p^2 - 1

9^2 p^2 - 1= (9p+1)(9p-1)

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Fill in the table and then round to the given place 4.3 hundredths tenths ones

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4.3
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3 years ago

A rectangular solid with a square base has a volume of 4096 cubic inches - determine the dimensions that yield the minimum surfa

Bumek [7]

Answer:

side of base, a = 10.1 inches, height, h = 40.1 inches

Step-by-step explanation:

Volume of rectangular solid, V = 4096 cubic inches

Let the side of base is a and the height is h.

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$S = 2a^2 + 4 ah \\\\S = 2a^2 + 4 \times a \times \frac{4096}{a^2} from (1)\\\S = 2a^2 + \frac{4096}{a}\\\\\frac{dS}{da}= 4 a - \frac{4096}{a^2}\\\\4 a - \frac{4096}{a^2} = 0 \\\\a^3 = 1024\\\\a =10.1 inches$

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3 years ago

How many terms are in the expression 4x -4 +3y?

horrorfan [7]

Answer:

three (3)

Step-by-step explanation:

4x is the first term

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3 years ago

What is the midpoint of the line segment (-8,-7) and (-7,-8)

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3 years ago

Is 3/10 greater than 5/10

storchak [24]

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That's true for cows, rocks, trees, fish, salt-shakers, and babies.
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Why wouldn't it be true for tenths ?

Let me say it another way:

No. 3/10 is less than 5/10 .

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3 years ago

Read 2 more answers