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Vlada [557]
4 years ago
10

After a rainstorm, a rainbow appears across the sky in the shape of a parabola. The equation of the parabolic rainbow is y = −x 

2 + 100, where 2x is the width and y is the height. How wide is the rainbow 25 miles above the ground?
Mathematics
1 answer:
Charra [1.4K]4 years ago
8 0
X=37.5
so 2x=75
.............
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Please help with this problem, I don't understand how to work it out.
balandron [24]
The way to work it is to make a table in Excel (or equivalent program) with the data of budget for every year.

This is how it should look:

<span><span><span>year      budget </span> <span>
     0     265.1 </span> <span>
     1     277.5 </span> <span>
     2     288.9 </span> <span>
     3     303.0
  </span> <span>    4     311.3
</span><span>     5    320.4
</span><span>     6    334.5
</span><span>     7    351.2
  </span> <span>    8    368.2 </span> <span>
     9    381.7

Select both columns and inser a scatter plot graph (menu, insert, graph, scatterplot).

Now change the design of the graph to include the model. In this case I got y = 12.724 x + 262.92

x represents the number of year after 1990 and y represents the budget.

Now you can use the model to calcualte the budget when you know the year and to calculate the year when you know the budget.

For year 2001, x = 11 and y = 12.724 (11) + 262. 92 = 402.88 (which is 402,880)

 This is the same year for which the budget exceeds 400,000. </span></span></span>
6 0
4 years ago
[(8 + 12) divided by 4] + 5 • (6-3)<br> Answer here!
denis-greek [22]

Answer:

30

Step-by-step explanation:

8 plus 12 is 20

20 divided my 4 is 5

5 plus 5 is 10

6 minus 3 is 3

10(from the first half) times 3(from the second half) is 30

8 0
4 years ago
What’s the result of adding these two equations? Please help
Nutka1998 [239]

Answer:

u should subract those not add

7 0
2 years ago
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SpyIntel [72]

Answer:

2.36 * 10^13 miles

Step-by-step explanation:

Given that :

Proxima centauri is at a distance of 4.24 light years away from the sun.

Distance in miles of Proxima centauri from the sun ;

1 light year = 5.9 * 10^12 miles

Number of light years from the sun * 5.9 * 10^12

= 4 * (5.9 * 10^12)

= 23.6 * 10^12 miles

= 2.36 * 10^13 miles

3 0
3 years ago
a point -2, 6 is rotated clockwise about the origin by 90° and this image is reflected in the x-axis is Define set point is labe
Helen [10]

Answer:wow

Step-by-step explanation:

4 0
3 years ago
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