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3 years ago

Multiply and simplify.

Mathematics

1 answer:

Alexus [3.1K]3 years ago

8 0

Answer:

<h3>Answer A is correct</h3>

${x}^{3} - 27$

Step-by-step explanation:

$(x - 3)( {x}^{2} + 3x + 9) \\ x( {x}^{2} + 3x + 9) - 3( {x}^{2} + 3x + 9) \\ {x}^{3} + 3 {x}^{2} + 9x - 3 {x}^{2} - 9x - 27 \\ {x}^{3} - 27$

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The explicit formula for a sequence is

Alexandra [31]

Answer:

Step-by-step explanation:

Let n = 21, and evaluate the expression.

$a_n = -2 + \dfrac{3}{2}(n - 1)$

$a_{21} = -2 + \dfrac{3}{2}(21 - 1)$

$a_{21} = -2 + \dfrac{3}{2}(20)$

$a_{21} = -2 + \dfrac{3}{1}(10)$

$a_{21} = -2 + 30$

$a_{21} = 28$

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3 years ago

For each trip they charge on intail fee of 100 in additoin to a constant fee for each vertical letter climbed for instance the p

Helga [31]

Answer:

f = 100 + 0.133d

Step-by-step explanation:

For each trip, they charge an initial fee of 100 in addition to a constant fee for each vertical meter climbed.

For example, for 3000 meters of climbing, they charged the additional constant fee of 400.

Therefore, per meter climbing they charges $\frac{400}{3000} = 0.133$ .

Therefore, if f represents the fee in dollars of a trip they climbed d vertical meters then we can model the situation as

f = 100 + 0.133d (Answer)

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3 years ago

Determine the next three terms of 180,360,540,720

ella [17]

Answer:

900, 1080, 1260

Step-by-step explanation:

Just used a pattern solving calculator

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2 years ago

In the upcoming election for governor, the most recent poll, based on 900 respondents, predicts that the incumbent will be reele

lions [1.4K]

<h2>405 people</h2>

Step-by-step explanation:

It is given that there are a total of $900$ people.

It is given that $55$ % of the people will reelect.

So,it can be found that $100-55=45$ % of the people may not reelect or may not make their decision yet.

So,number of people that may not reelect or may not make their decision yet is $\frac{45}{100}\times 900=405$ .

So, $405$ people haven't made their decision yet or not reelect.

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4 years ago

Which situation represented by 25/9 ?

faltersainse [42]

Answer:

the answer is 2.7777

Step-by-step explanation:

You just divide!

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3 years ago