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3 years ago

Find the distance AB between the points A (8, 2) and B(3,9). Round your answer to the nearest

Mathematics

1 answer:

LenKa [72]3 years ago

6 0

Answer:

Step-by-step explanation:

$A (8, 2) = (x_1 ,y_1)\\ B(3,9) = (x_2,y_2)\\\\d = \sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}\\\\d =\sqrt{\left(3-8\right)^2+\left(9-2\right)^2}\\\\d=\sqrt{(5)^2+(7)^2}\\\\d=\sqrt{25+49}\\\\d=\sqrt{74}\\\\d = 8.6023\\\\d = 8.6$

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At the gym, Tika spends twice as much time doing aerobics than weight training. She stretches for one fifth of the time she spen

Dafna1 [17]

Answer:

Her total workout is $2w+w+\frac{w}{5}$ .

Step-by-step explanation:

Consider the provided information.

Let w be the amount of time Tika spends on weight training.

Tika spends twice as much time doing aerobics than weight training.

It means she spends $2w$ time doing aerobics.

She stretches for one-fifth of the time she spends on weight training.

It means she spends $\frac{w}{5}$ time for stretches.

The total workout time is:

$2w+w+\frac{w}{5}$

Hence, her total workout is $2w+w+\frac{w}{5}$ .

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3 years ago

Square root of 81 minus square root of negative 48 answer in a + bi form

galina1969 [7]

Answer:

9-6.92820323i Nothing else can be done.

Step-by-step explanation:

-48 is not a perfect square but 81 is a square. When you try to square -48 it comes to be 6.92820323i.

4 0

3 years ago

A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The pr

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It would be D. 5/20 because the other 2 you would add then subtract and then you would just put the answer yo get from subtracting it over 20.

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3 years ago

If 3x - 8= -2, find the value of x - 6.

siniylev [52]

Answer:

x-6 = -4

Step-by-step explanation:

3x - 8= -2

Add 8 to each side

3x - 8+8= -2+8

3x = 6

Divide by 3

3x/3 = 6/2

x =2

We want to find x-6

2-6 = -4

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3 years ago

Read 2 more answers

Please help i will give brainly :

Lubov Fominskaja [6]

1) The x-axis represents the energy ( $E$ ), in joules. The y-axis represents the amplitude ( $x$ ), in milimeters.

2) The curve depicts an <em>monotonous decrecent</em> rate of change.

3) The amplitude is directly proportional to the root square of the energy.

<h3>How to analyze a graph relationship between two variables</h3>

In this question we have a relationship between two variables, in which we must apply principles of <em>functional</em> analysis to respond three questions presented in the statement.

Now we proceed to answer the three questions below:

<em>What is on the x-axis? The y-axis?</em> R/ The x-axis represents the energy ( $E$ ), in joules. The y-axis represents the amplitude ( $x$ ), in milimeters.
<em>How would you describe the rate of change of the line?</em> R/ The curve depicts an <em>monotonous decrecent</em> rate of change, that is, the slope converges to zero when the energy tends to infinite.
<em>What does this tell you about the relationship between amplitude and energy?</em> R/ The curve show a strong similarity with a function of the form $x = A\cdot \sqrt{E}$ . Hence, the amplitude is directly proportional to the root square of the energy.

To learn more on functions, we kindly invite to check this verified question: brainly.com/question/12431044

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2 years ago