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RUDIKE [14]
2 years ago
14

The Air Quality Index, or AQI, measures how polluted the air is in your city and assigns a number based on the quality of the ai

r. Over 100 is "Unhealthy". The following quadratic regression equation, models the AQI over time, where n represents the number of days the AQI exceeded 100, and t represents the number of years since 1990.
Mathematics
1 answer:
tatuchka [14]2 years ago
3 0

Answer:

it is actually c.135 days on edge just took the test

Step-by-step explanation:

took the test

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10.4 sweets cost 28p altogether,<br> how much much do 7 sweets cost
Serjik [45]
28/10.4=2.69
2.69*7=18.83
7 0
3 years ago
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Cuanto es 32256 dividido para 25 con proceso
nika2105 [10]

Answer:

1290.24

Step-by-step explanation:

This has to do with simple division

Cuanto es 32256 dividido para 25 con process translation was translated In English language. I translated the question to mean 32256 divided by 25

Step one

32256 divided by 25

32256/25 = 1290.24

The answer is 1290.24

7 0
3 years ago
Solve the equation using square roots.x2-14=-10
ElenaW [278]

Answer:

x=2

Step-by-step explanation:

x^{2} -14=-10\\

Add 14 to both sides

x^{2}=4

Square root it

x=2

8 0
3 years ago
4x-16=-20 solve for the x
Vadim26 [7]

Answer:

x=-1

Step-by-step explanation:

4x-16=-20

Get x to one side by subtracting it.

-16=-20-4x

Add the 20 on both sides.

-16+20=-4x

Simplify

4=-4x

4/-4=-4x/-4

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x=-1

4 0
3 years ago
Read 2 more answers
Help me plss need help with theses three
fiasKO [112]
interior angle of a regular 18-gon.
It is easier to calculate the exterior angle of a regular polygon of n-sides (n-gon) by the relation
exterior angle = 360/n
For a 18-gon, n=18, so exterior angle = 360/18=20 &deg;
The value of each interior angle is therefore the supplement, or
Interior angle = 180-20=160 degrees.

Naming of a 9-gon
A polygon with 9 vertices is called a nonagon (in English) or enneagon (French ennéagone, but the English version is sometimes used)
You had a good start with the correct answer.

Exterior angle of a 15-gon
The exterior angle of a 15-gon can be calculated using the relation given in the first paragraph, namely
Exterior angle = 360/15=24 degrees
4 0
2 years ago
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