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3 years ago

Determine which expressions are polynomials. Explain your reasoning.

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

Answer:

Step-by-step explanation:

A polynomial is an expression containing two or more algebraic terms. They are often the sum of several terms containing different powers (exponents) of variables and never contains square roots or division by a variable.

In your case, option A contains square root, thus this expression is not a polynomial. Option C contains division by a variable, thus this is not a polynomial too.

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PLSSS HELP FOR BRAINLIEST

Taya2010 [7]

Answer:

the answer is 12 gallons

Step-by-step explanation:

make fractions improper:

9/8 and 25/2

make them have a common denominator:

9/8 and 100/8

to make a whole gallon but what you do to one side you do to the other:

9/8-1/8=8/8

100/8-1/8=99/8

divide 99/8:

12.375

round down:

7 0

3 years ago

Where is this from?

Umnica [9.8K]

Answer: jojoooooooooooooooooooooooooooooo wat?

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3 years ago

Figure out this number pattern:<br>1,5,14,30,55

Amanda [17]

5 - 1 = 4 = 2^2

14 - 5 = 9 = 3^2

30 - 14 = 16 = 4^2

55 - 30 = 25 = 5^2

Start with 1, then add 2^2, 3^3, 4^2, 5^2, 6^2, etc.

5 0

4 years ago

Which expression can you use to find 16÷4/5?

Archy [21]

16÷4/5 is 0.8

Step-by-step explanation:

i did it in a computer

5 0

4 years ago

The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:

blsea [12.9K]

Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

The formula to compute the standard deviation is:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

The data provided is:

X = {19, 19, 21, 25, 25, 28, 29, 30, 31, 32, 40}

Compute the mean of the data as follows:

$\bar x=\frac{1}{n}\sum\limits^{n}_{i=1}{x_{i}}$

$=\frac{1}{11}\times [19+19+21+...+40]\\\\=\frac{299}{11}\\\\=27.182$

Compute the standard deviation as follows:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

$=\sqrt{\frac{1}{11-1}\times [(19-27.182)^{2}+(19-27.182)^{2}+...+(40-27.182)^{2}]}}\\\\=\sqrt{\frac{395.6364}{10}}\\\\=6.28996\\\\\approx 6.2899$

Thus, the standard deviation of the age distribution is 6.2899 years.

7 0

3 years ago