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 air. Over 100 is unhealthy. . . Given the following quadratic regression equation, estimate the number of days the AQI exceeded 100 in the year 1988. . . n = 1.76t^2 - 13.32t + 41.00. (let t represent the number of years since 1990. therefore, t = 0 corresponds the year 1990. round to the nearest whole day.). . A. 60 days. B. 75 days. C. 61 days. D. 21 days

Answers

Answer 1

Answer: There are several information's already given in the question. The answer to the question can be easily deduced using those given information's.

From the given question we come to know that
t = -2
Then
n = 1.76t^2 - 13.32t + 41.00
= [1.76 * (-2)^2] - [13.32 * (-2) + 41
= 7.04 - ( - 26.64) + 41
= 7.04 + 26.64 + 41
= 74.68
= 75
From the above deduction, we can conclude that the correct option among all the options that are given in the question is the second option or option "B".

Answer 2

Answer:

Answer:

b. 75 days

Step-by-step explanation:

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500mm x 600mm how many 25cm fit inside

Answers

Since 1 mm = 0.1 cm, then 500mm x 600mm = 300,000mm, or 30,000cm.

Now you need to divide 30,000 into 25.

30,000 / 25 = 1,200

Now lets check our answer.

1,200 x 25 = 30,000

So 1,200 25's can fit in 500mm x 600mm.

A car rental agency charges a weekly rate of $300 for a car and anadditional charge of 5 cents for each mile driven. How much miles can
you travel in a week for $500?
5,000 miles
3,000 miles
3,500 miles
5
4,000 miles
3
4,500 miles

Answers

Answer:

4,000

Step-by-step explanation:

C+2c+12=75
what is the value of c?

Answers

Simplify c+2c+12 to 3c+12
3c+12=75
Subtract 12 from both sides
3c=75−12
Simplify 75−12 to 63
3c=63
Divide both sides by 3
c=63/3
Simplify 63/3 to 21
c=21

c+2c+12=75
3c + 12 = 75
3c = 75 - 12
3c = 63
с = 63 : 3
с = 21
______________________

3 × 21 + 12 = 75
63 + 12 = 75
75 = 75

What is the volume of this rectangular prism?

Answers

Answer:

$(64)/(27) cm^3$

Step-by-step explanation:

V = L*W*H

V= (4/3)*(4/3)*(4/3)

Volume = $(64)/(27) cm^3$

The length of the shadow of a tree is 24 feet, the tan P = .7.
Write an equation involving a trigonometric ratio that can be used to find the height x of the tree. Explain why your equation is correct.

Find the height x of the tree by using your equation.

Answers

You do not included the picture. I can guess that p is the angle formed by the shadow and the hypotenuse of the right triangle.

The the trigonometric ratio is tan(p) = x/s

Where x is the height of the tree and s is the length of the shadow.

Then, x =s*tan(p) = 24 feet * 0.7 = 16.8 feet

Multiplying a trinomial by a trinomial follows the same steps as multiplying a binomial by a trinomial. Determine the degree and maximum possible number of terms for the product of these trinomials: (x2 + x + 2)(x2 – 2x + 3).HOW DO I Explain how it arrived at your answer?

Answers

The correct answer is:

The degree of the polynomial is 4 and the maximum number of terms is 9.

Explanation:

Multiplying the terms of each trinomial that have the largest degree, we are multiplying x²(x²); this gives us x⁴. This means the degree of the trinomial, the largest degree of all terms, is 4.

Without multiplying through, we know we will multiply each term of the first trinomial by each term of the second one. This means that, if no terms are like to combine, we could have 3(3) = 9 terms.

For this case we have the following trinomial product:
$(x ^ 2 + x + 2) (x ^ 2 - 2x + 3)$
By doing distributive property we have:
$(x ^ 4 - 2x ^ 3 + 3x ^ 2) + (x ^ 3 - 2x ^ 2 + 3x) + (2x ^ 2 - 4x + 6)$
Grouping similar terms we have:
$x ^ 4 + x ^ 3 (-2 + 1) + x ^ 2 (3-2 + 2) + x (3-4) + (6)$
Adding terms of the same exponent we have:
$x ^ 4 - x ^ 3 + 3x ^ 2 - x + 6$
Answer:
$x ^ 4 - x ^ 3 + 3x ^ 2 - x + 6$
The degree of polynomial is equal to 4
The maximum number of terms is equal to 5.

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