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iren [92.7K]
2 years ago
11

The dolphin dives 20 feet below the surface of the ocean. What is the dolphins elevation in feet?

Mathematics
1 answer:
bearhunter [10]2 years ago
6 0

Answer:

-20 Feet.

The dolphin went below its initial starting point, Zero

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Solve -9m-4+2m = -9-7m+5, and interpret the results.
Drupady [299]

Answer:

-9m - 4 + 2m = -9 - 7m + 5

-7m - 4 = -7m - 4

-7m + 7m = -4 + 4

0 = 0

This is an identity solution because the same number equals the same number. That means there's an infinite set of solutions.

5 0
3 years ago
What function is shown by the graph below?
Airida [17]

Answer:

The function f(x)=\sqrt{x+2}  is shown by the graph below ⇒ 2nd answer

Step-by-step explanation:

<em>To find the right function chose two points from the graph and substitute the x-coordinate of each point in the function to find the y-coordinate, if they are the same with the corresponding y-coordinates of the points, then the function is shown by the graph</em>

From the figure:

The curve passes through points (-2 , 0) and (2 , 2)

∵  f(x)=\sqrt{x-2}

∵ x = -2

- Substitute x by -2

∴ f(-2)=\sqrt{-2-2}

∴ f(-2)=\sqrt{-4} ⇒ it is impossible no square root for (-) number

∴ f(x)=\sqrt{x-2} is not the function shown by the graph

∵  f(x)=\sqrt{x+2}

∵ x = -2

- Substitute x by -2

∴ f(-2)=\sqrt{-2+2}

∴ f(-2)=\sqrt{0}

∴ f(-2) = 0 ⇒ same as the y-coordinate of x = -2

∵ x = 2

- Substitute x by 2

∴ f(2)=\sqrt{2+2}

∴ f(2)=\sqrt{4}

∴ f(2) = 2 ⇒ same as the y-coordinate of x = 2

∴ The function f(x)=\sqrt{x+2} is shown by the graph below

7 0
3 years ago
不是我要的<br>营养分,<br>一、加;<br>的<br>第一<br>年11<br>在公司<br>16<br>115<br>更多<br>11<br>(<br>-<br>日) 上海​
ludmilkaskok [199]

Answer:

您能再解釋一下嗎,謝謝

Step-by-step explanation:

3 0
3 years ago
Help please I get y=mx+b but I'm not sure how to do this
Fofino [41]

(3,4)  (9,7)

to find the slope

m = (y2-y1)/(x2-x1)

  = (7-4)/(9-3)

3/6

1/2

The slope is 1/2

point slope form

y-y1 = m(x-x1)

y-4 = 1/2(x-3)

distribute

y-4 = 1/2x -3/2

add 4 to each side

y = 1/2 x -3/2 + 4

y = 1/2 x -3/2 + 8/2

y = 1/2 x + 5/2

this is in slope intercept form

8 0
3 years ago
Read 2 more answers
2. Rob Incorrectly almplified the radioal expresalon. Find and correct his error.
Leona [35]

Answer:

I can't even find the rational expression

Step-by-step explanation:

Did you forget something?

3 0
2 years ago
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