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Anarel [89]
3 years ago
9

Factor completely: 16x2 − 81 A. (4x + 9) (4x − 9) B. 16x2 − 81 C. (4x + 9) (4x + 9) D. (4x2 + 9) (4x2 − 9)

Mathematics
1 answer:
ch4aika [34]3 years ago
6 0

Answer:

A. (4x + 9) (4x − 9) is the correct answer.


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Can you help me solve this please​
Lostsunrise [7]

9514 1404 393

Answer:

  180 days

Step-by-step explanation:

The formulas for the volume of a cone and a cylinder are ...

  V = πr²h . . . . . volume of a cone

  V = (1/3)πr²h . . . . . volume of a cylinder

Comparing these formulas, you can see that the 6' high cone at the top will have the same volume as a cylinder of the same radius that is 2' high. So, we can simplify the problem to finding the volume of a cylinder that is 66+2 = 68' high.

  V = π(12 ft)²(68 ft) = 9792π ft³ ≈ 30752.5 ft³

When the corn is used at the rate of 170 ft³/day, it will last ...

  (30752.5 ft³)/(170 ft³/day) ≈ 180.96 days

The corn will last 180 days.

_____

<em>Additional comment</em>

In scenarios like this, it is inappropriate to round up. There will be about 162 ft³ of corn left after 180 days, which is not enough for an additional day.

7 0
2 years ago
How are the functions y = x and y = x+ 5 related? How are their graphs related?
sesenic [268]

Answer:

b

Step-by-step explanation:

the graph gets translated 5 units above its parent graph of y = x

6 0
2 years ago
2. What is the slope of the line that<br> passes through the points shown in<br> the table?
Nata [24]
The slope is 2. slope is change in the y values divided by change in x values
8 0
2 years ago
Translate this phrase into an algebraic expression.
Daniel [21]

Answer:

16 + 2n

Step-by-step explanation:

n + n is twice of a number, but 2n is simplified. "16 increased by" just represent addition

8 0
3 years ago
PLS HELP WILL MARK U BRAINLIEST!! NO FAKE ANSWERS
erica [24]

Answer:

\huge\boxed{\sf 3(n + 5) \leq  100}

Step-by-step explanation:

  • The sum of a number n and 5 => n + 5
  • Thrice the sum of a number n and 5 => 3(n + 5)
  • At most means "less than or equal to", the sign of which is "≤"

<u>So, the inequality will be:</u>

3(n + 5) ≤ 100

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>

6 0
2 years ago
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