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nekit [7.7K]
3 years ago
13

I need help with these 2 questions.

Mathematics
1 answer:
Natalka [10]3 years ago
7 0
I only see one questio but the answer to this one is a^2/b
You might be interested in
Distribute and simplify the radicals below (√12+6)(-√8-√2)
Hatshy [7]

For this case we have the following expression:

(\sqrt {12} +6) (- \sqrt {8} - \sqrt {2})

We apply distributive property:

(\sqrt {12} * - \sqrt {8}) + (\sqrt {12} * - \sqrt {2}) + (6 * - \sqrt {8}) + (6 * - \sqrt {2} ) =\\- \sqrt {96} - \sqrt {24} -6 \sqrt {8} -6 \sqrt {2} =

We rewrite in equivalent form:

- \sqrt {4 ^ 2 * 6} - \sqrt {2 ^ 2 * 6} -6 \sqrt {2 ^ 2 * 2} -6 \sqrt {2} =\\-4 \sqrt {6} -2 \sqrt {6} -6 * 2 \sqrt {2} -6 \sqrt {2} =

-4 \sqrt {6} -2 \sqrt {6} -12 \sqrt {2} -6 \sqrt {2} =\\-6 \sqrt {6} -18 \sqrt {2}

Answer:

-6 \sqrt {6} -18 \sqrt {2}

8 0
3 years ago
Read 2 more answers
Work out an estimate for 31 times 9.87 over 0.509
Ganezh [65]

Answer:

620

Step-by-step explanation:

9.87 is about 10 and 0.509 is about 0.5

(31 * 10) / 0.5 = about 620

5 0
3 years ago
6x + 7 - 4x + 8 – x
grandymaker [24]

Answer:

x + 15 or 1x + 15

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The diagram represents 6x2 – 7x 2 with a factor of 2x – 1. A 2-column table with 2 rows. First column is labeled 2 x with entrie
a_sh-v [17]

Factors of a polynomial can divide it without leaving remainder. The other factor of 6x^2 - 7x + 2 is given by Option D :  3x + 2

<h3>How to factorize a polynomial?</h3>

Let the  polynomial A(x) has one factor f(x).

Then, it means, we have:

\dfrac{A(x)}{f(x)} = g(x)

Thus, A(x) can be written as A(x) = f(x) \times g(x)

Thus, the other factor of that polynomial is

g(x) = \dfrac{A(x)}{f(x)}

For given case, the polynomial A(x) is

A(x) = 6x^2 - 7x + 2

Its one factor f(x) is given f(x) = 2x - 1

Thus, its second factor is obtained as:

g(x) = \dfrac{A(x)}{f(x)} = \dfrac{6x^2 - 7x + 2}{(2x - 1)}  = \dfrac{6x^2 -4x -3x - 2}{2x - 1}\\\\g(x) = \dfrac{2x(3x + 2) - 1(3x + 2)}{2x - 1} = \dfrac{(2x - 1)(3x + 2)}{2x - 1}\\\\g(x) = (3x + 2)

Thus, the second factor of the given polynomial is

Option D :  3x + 2

Learn more about factors of polynomials here:

brainly.com/question/16078564

4 0
2 years ago
Choose the statement that is true. WILL MARK BRAINLIEST
Margarita [4]

Answer:

option A is correct

hope it helps :)

Step-by-step explanation:

The Standard Deviation Rule states that for a normal distribution, nearly all of the data will fall within three standard deviations of the mean. It states that

68% of data falls within the first standard deviation from the mean.

95% fall within two standard deviations.

99.7% fall within three standard deviations.

Therefore, looking at the options, the true statement id

A) For a normal distribution, 99.7% of the distribution is within 3 standard deviations.

5 0
3 years ago
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