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Harlamova29_29 [7]
3 years ago
6

Can you please help me?

Mathematics
1 answer:
garri49 [273]3 years ago
4 0

Answer:

6.2

Step-by-step explanation:

\frac{10.3}{sin(90)} = \frac{x}{sin(37)}                 *Cross multiply*

10.3(sin(37)) = x(sin(90))   *Divide by sin(90) to isolate x*

x = \frac{10.3(sin(37))}{sin(90)}                  *Solve*

x = 6.19 ≈ 6.2

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A. y = 1/2 x

Step-by-step explanation:

A proportional relationship between two quantities is a collection of equivalent ratios, related to each other by a constant of proportionality. In other words, if each point on the line can be put as a fraction and reduced to the same fraction, the relationship is proportional.

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Which expression is equivalent to 10k+17-7j-18-11k?
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Answer:

B. -7j-k-1

Step-by-step explanation:

Simplify:

1. IDENTIFY LIKE TERMS

<em>10k</em>+17-7j-18-<em>11k</em>

  • <em>10k and -11k are like terms since they have the same variable.</em>
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2. COMBINE LIKE TERMS

-7j-<em>k</em>-1

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

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We start by computing the average:

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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:

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44

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A number decreased by 5 is 50
Vinil7 [7]

Answer:

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Step-by-step explanation:

Let x represent the missing number.

When you hear the words decrease, minus, that tells you to subtract.

Before we subtract, if there is a variable, we must do the opposite of subtraction, we need to add.

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