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1 year ago

Can someone pls help me with this !

Mathematics

1 answer:

Vadim26 [7]1 year ago

8 0

Using a line of best fit, the predicted tsunami speed for the following depths is given by:

a. 1151 km/h.

b. 572 km/h.

c. 130 km/h.

d. 122 km/h.

<h3>How to find the equation of linear regression using a calculator?</h3>

To find the equation, we need to insert the points (x,y) in the calculator.

For this problem, the points (depth, velocity) are given by:

(7000, 943), (4000, 713), (2000, 504), (200, 159), (50, 79), (10,36)

Inserting these points in the calculator, the velocity in function of the depth is:

v(d) = 0.12879d + 121.03448

Hence, the velocities are given as follows:

a. v(8000) = 0.12879 x 8000 + 121.03448 = 1151 km/h.

b. v(3500) = 0.12879 x 3500 + 121.03448 = 572 km/h.

c. v(70) = 0.12879 x 70 + 121.03448 = 130 km/h.

d. v(5) = 0.12879 x 5 + 121.03448 = 122 km/h.

More can be learned about a line of best fit at brainly.com/question/13203683

#SPJ1

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3 years ago

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<h3>Translation of shapes in the Cartesian plane</h3>

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2 years ago

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3 years ago

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galben [10]

For questions like these, what I like to do is plug in multiple points and see where they end up. I prefer simplicity, so I'll plug in a simple point -- x=3. If a or c was our graph, our y point would be at 3. As it is not, our options are left at b and d. For a square root, we know that 4 has a relatively simple square root, as its root is 2. To get 4 inside the square root box, x+3 must be equal to 4, so x=1. Plugging x=1 into both b and d, we get 2+3=5 and something else for d. Since y is not equal to 5 when x=1, b is incorrect and d is our answer. To ensure this, we could plug in a point for d. As we know that the cube root of 8 is 2, we could make sure that we have 8 inside the cube root box by making x equal to 5, and our y value would then be 2+3=5. As y=5 when x=5, these match up and d is our answer.

Feel free to ask further questions, and Happy Holidays!

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3 years ago

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