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3 years ago

If h(x) = −3x − 10, find h(−3). (1 point)

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

8 0

Answer:

h(- 3) = - 1

Step-by-step explanation:

Substitute x = - 3 into h(x) , that is

h(- 3) = - 3(- 3) - 10 = 9 - 10 = - 1

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7. algebra sara allen is interested in buying a notebook

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A percentage is a way to describe a part of a whole. The regular selling price of the computer notebook will be $937.5.

<h3>What are Percentages?</h3>

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Let the selling price of the computer notebook be represented by x.

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Also, the saving she made by buying this week will be $150, therefore, we can write,

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2 years ago

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jok3333 [9.3K]

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The sample mean for a set of n data is given by:

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In other words, the sample mean of the times for 71 times of the first round measured in seconds is:

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The sample standard deviation for a set of n data is given by:

$S = \sqrt{\frac{1}{n-1}\sum{(x_i - \bar x)^2}}$

In other words, the sample standard deviation of the times for 71 times of the first round measured in seconds is:

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3 years ago

Find the unit vector in the direction of v=(7,-3).<br> (enter exact answers with square roots)

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Answer:

$\binom{ \frac{7 \sqrt{58} }{58} }{ \frac{ - 3 \sqrt{58} }{58} }$

Step-by-step explanation:

First, find the magnitude of the vector:

$|v| = \sqrt{( {(7)}^{2} + {( - 3)}^{2}) } \\ = \sqrt{(49 + 9)} \\ = \sqrt{58}$

Then, divide each component of the vector by the magnitude to get the unit vector and rationalise:

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3 years ago