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Readme [11.4K]
2 years ago
15

Ericka is also in Mr. Whittaker’s science class and she recorded the variation in water level at a different part of the river.

She observed that the water level there fell 2.2 millimeters per year over a period of 6.2 years
This data is compared to the average annual trend, which shows the water level rising 1.8 mm/year.
Mathematics
1 answer:
Anton [14]2 years ago
3 0

Answer:

first one is 2.2mm/year and second is 6.2years and -2.2mm/year

Step-by-step explanation:

Just trust me im right

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PLEASE HELP 20 POINTS IM CRYING SO HARD RN WILL GIVE BRAINLIEST :(((( ITS IMPOSSIBLE 10TH GRADE
tatiyna

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Step-by-step explanation:

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3 years ago
O A PQR is reflected over the x-axis. What are the<br> coordinates of O'?
topjm [15]

Answer:

(8,-2)

Step-by-step explanation:

When reflecting something across the X axis the y axis coordinate is the one that will change to put the position further up or down.  In this case we are moving it down to the same amount below the axis that it is now above it.  That means that since it is currently 2 above the X axis it would then be 2 below the X axis making it at -2 so the coordinates would be (8,-2)

I hope this helps and please don't hesitate to ask if there is anything still unclear!

7 0
3 years ago
Read 2 more answers
Which is the equation of the parabola?
mestny [16]

Answer:

  • y = -1/20(x + 3)²

Step-by-step explanation:

<u>Consider the parent function:</u>

  • y = x²

The graph of the function open up and the vertex is at the origin, the point (0, 0)

Now, if it opens down, it means it is a reflection of the parent function over x axis, hence it has a negative coefficient, the function becomes:

  • y = -x²

The vertex is shifted to the point (-3, 0). It means the function also translated left by 3 units, the function becomes:

  • y = -(x + 3)²

<u>Since all the options have 1/20 as a coefficient, our function is:</u>

  • y = -1/20(x + 3)²

This is option B

6 0
3 years ago
The length of a rectangle is 8cm and the height is 16cm find the answer of the above figures using this formular...
notsponge [240]
  • Length=8cm
  • Breadth=16cm(Height)

<h3>Perimeter:-</h3>

\\ \sf\longmapsto Perimeter=2(L+B)

\\ \sf\longmapsto Perimeter=2(16+8)

\\ \sf\longmapsto Perimeter=2(24)

\\ \sf\longmapsto Perimeter=48cm

Area:-

\\ \sf\longmapsto Area=Length\times Breadth

\\ \sf\longmapsto Area=8(16)

\\ \sf\longmapsto Area=128cm^2

3 0
3 years ago
What’s the piremeter of a polygon
Burka [1]

Answer:

the length of all sides added together

6 0
3 years ago
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