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2 years ago

Use the distributive property to solve 7 (x-2a-9) WILL GIVE BRAINLIST TEEHEE!

Mathematics

2 answers:

koban [17]2 years ago

8 0

Answer:

7x-14a-63

............

Vitek1552 [10]2 years ago

7 0

7x-14a-63
Hope this helps

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If you pay $3.36 in tax, what was the original price at an 8% sales tax

yanalaym [24]

Answer:

Step-by-step explanation:

<u>Given</u>

8% = $3.36
100% = x

<u>Cross multiply and solve for x:</u>

x = $3.36*100/8 = $42

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2 years ago

Identify whether the following equation has a unique solution, no solution, or infinitely many solutions.

fredd [130]

Answer:

no solution

Step-by-step explanation:

4( − 11) = 15 − 4

-44 = 11

Since this iS FALSE, it means that the equation given has no solution

7 0

2 years ago

Divide 48 in the ratio 3 : 6:7

Marina CMI [18]

Answer:

$48 \times \frac{3}{16} \\ 9$

$48 \times \frac{6}{16} \\ 18$

$48 \times \frac{7}{16} \\ 21$

9:18:21

7 0

2 years ago

Read 2 more answers

Find the standard deviation of 21, 31, 26, 24, 28, 26

Vesnalui [34]

Given the dataset

$x = \{21,\ 31,\ 26,\ 24,\ 28,\ 26\}$

We start by computing the average:

$\overline{x} = \dfrac{21+31+26+24+28+26}{6}=\dfrac{156}{6}=26$

We compute the difference bewteen each element and the average:

$x-\overline{x} = \{-6,\ 5,\ 0,\ -2,\ 2,\ 0\}$

We square those differences:

$(x-\overline{x})^2 = \{36,\ 25,\ 0,\ 4,\ 4,\ 0\}$

And take the average of those squared differences: we sum them

$\displaystyle \sum_{i=1}^n (x-\overline{x})^2=36+25+4+4+0+0=69$

And we divide by the number of elements:

$\displaystyle \sigma^2=\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n} = \dfrac{69}{6} = 11.5$

Finally, we take the square root of this quantity and we have the standard deviation:

$\displaystyle\sigma = \sqrt{\dfrac{\sum_{i=1}^n (x-\overline{x})^2}{n}} = \sqrt{11.5}\approx 3.39$

8 0

2 years ago

Direct Variation - Item 2845

Brums [2.3K]

The equation of direct proportion is y = 62x

<h3>Direct variation</h3>

Two quantities are said to vary directly proportional to each other when an increase in one leads to an increase in the other or a decrease in one leads to a decrease in the other.

Direct variation is given by:

y = kx

where y, x are the variables and k is the constant of proportionality.

The equation of direct proportion is y = 62x

Find out more on Direct variation at: brainly.com/question/6499629

3 0

2 years ago