PLSSS HELP YA GIRL OUTTT , ( imma mark brainliest) (35 points)
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”.
The following quadratic regression equation gives us an estimate of n, which is the number of days the AQI exceeded 100 a particular year. We will use this equation to estimate the number of days the AQI was over 100 in the year 1995.
n = 1.76 t squared minus 13.32 t + 41.00
(Let t represent the number of years since 1990. Therefore, t = 0 corresponds to the year 1990. For the estimate of n, round to the nearest whole day.)
a. 18 days
b. 24 days
c. 182 days
d. 72 days

Answers

Answer 1

Answer:

its either B or C

Step-by-step explanation:

hope it helps

sorry if its wrong

Answer 2

Answer:

a

Step-by-step explanation:


Related Questions

Sultan measures the distance he drives to work each day using the odometer on his car, which measures distance in


miles, accurate to the nearest tenth of a mile. If the odometer reads 11.7 miles, what between what two quantities can


you be certain that the exact distance lies?


in two or more complete gfsentences, explain your reasoning,

Answers

Answer:

We can be sure that the actual distance lies between 11.65 and 11.74

Step-by-step explanation:

Here. we are told that the odometer measures to the nearest tenth.

The nearest tenth means to the nearest first digit after the decimal point

So the range of values we shall be writing will be the range that includes the smallest number that can be approximated to 11.7 and the largest number that can be approximated;

Thus, we have;

11.65 to 11.74

The reasoning is because the smallest number that can be approximated to 11.70 is 11.65 while the largest that can be approximated to 11.70 is 11.74. So the actual distance we need from the odometer is between 11.65 and 11.74

I will give the brainiest!
Choose the point on the terminal side of -45°
(-3,-3)
(4,-4)
(5,5)
(-2,2)

Answers

Answer:

the answer is b)(4,-4)

please mark as brainiliest.

Answer:

(-2,2)

Step-by-step explanation:

12/15 = 8/k k = ? Please helppp

Answers

Answer:

10

Step-by-step explanation:

you can cross multiply.

[tex]\frac{12}{15}=\frac{8}{k}[/tex]

after you cross multiply:

12k=120

k=10

74 ÷ 2072=
PLEASE HELPPPP

Answers

Answer:

0.0357142857142857

Use a calculator ok buddy

given the regular polygon, select all of the rotations and reflections that carry the figure onto itself.

Answers

Answer:

A. A rotation of 72º around the center, point D.

C. A reflection across line b through one vertex, the center d.

E. A reflection across line c, and the midpoint of the opposite side

Step-by-step explanation:

From Euclidean Geometry we get that sum of internal angles inside a polygon equals 360º and there is the following relationship in regular polygons:

[tex]\theta = \frac{360^{\circ}}{n}[/tex] (Eq. 1)

Where:

[tex]\theta[/tex] - Internal angle, measured in sexagesimal degrees.

[tex]n[/tex] - Number of sides, measured in centimeters.

If we know that [tex]n = 5[/tex], then internal angle of regular pentagon is:

[tex]\theta = \frac{360^{\circ}}{5}[/tex]

[tex]\theta = 72^{\circ}[/tex]

In consequence, rotating the regular pentagon 72º around the pentagon carries the figure onto itself due to angular symmetry. (Correct answer: A)

By adding any line passing the center of the regular pentagon (i.e. line cc', line bb'), which is collinear to any vertex and any point of the figure, we guarantee conditions of length symmetry so that reflection carries the figure onto itself. (Correct answers: C, E)

Answer:

Step-by-step explanation:

Thank you

Using f(x) = 3x - 3 and g(x) = -x, find g(f(0))

Answers

Answer:

g(-3)=3

Step-by-step explanation:

Give the domain and range.
القسم الا نیا
1
a. domain: {1, 2, 3}, range: {1, 0, 1}
b. domain: {-1, 0, 1), range: {1, 2, 3}
c. domain: {1, 0, 1), range: {1, 2, 3}
d. domain: 1, 2, 3), range:{-1, 0, 1}
ant ancur from the choices provided

Answers

I think it’s B but I am not sure

The middle 5 in 0.555is 10 times the value of the 5 to its

Answers

Right
Numbers increase in value as you go right to left

i will give 20 pts
plz halp-

Answers

Answer:

sorry

Step-by-step explanation:

Answer:

It's dez

Step-by-step explanation:

Ask me what's dez

-1.8 + (2.1) show ur work

Answers

Answer:

0.3

Step-by-step explanation:

Simplify: -1.8 + 2.1-1.8 + 2.1 = 0.3

I hope this helps!

Karen is trying to decide which home phone company to use. Phone Home was a monthly charge of
$45 and charges $0.01 per minute. CallMeMaybe has a monthly charge of $10 and charges $0.05 per
minute. Write an inequality to represent the number of minutes used in order for Phone Home to
have the better deal.

Answers

Answer:

Is this a joke?

Step-by-step explanation:

Find the value of y.
(12x + 9)
(8x + 11)º
(14y + 7)o

Answers

Answer:

y = 7

Step-by-step explanation:

First, find the value of x.

[tex] (12x + 9) + (8x + 11) = 180 [/tex] (linear pair)

Solve for x

[tex] 12x + 9 + 8x + 11 = 180 [/tex]

Collect like terms

[tex] 12x + 8x + 9 + 11 = 180 [/tex]

[tex] 20x + 20 = 180 [/tex]

Subtract 20 from both sides

[tex] 20x + 20 - 20 = 180 - 20 [/tex]

[tex] 20x = 160 [/tex]

Divide both sides by 20

[tex] \frac{20x}{20} = \frac{160}{20} [/tex]

[tex] x = 8 [/tex]

Thus,

[tex] (12x + 9) = (14y + 7) [/tex] (vertical angles)

Plug in the value of x, and solve for y

[tex] 12(8) + 9 = 14y + 7 [/tex]

[tex] 96 + 9 = 14y + 7 [/tex]

[tex] 105 = 14y + 7 [/tex]

Subtract 7 from each side

[tex] 105 - 7 = 14y + 7 - 7 [/tex]

[tex] 98 = 14y [/tex]

Divide both sides by 14

[tex] \frac{98}{14} = \frac{14y}{14} [/tex]

[tex] 7 = y [/tex]

Suppose b is an integer. If b mod 12 = 5, what is 8b mod 12? In other words, if division of b by 12 gives a remainder of 5, what is the remainder when 8b is divided by 12

Answers

Answer:

8 b mod 12 is equal to 4.

Step-by-step explanation:

Use Dividend = Divisor × Quotient + Remainder

As b mod 12 = 5 (that is division of b by 12 gives a remainder of 5)

[tex]b=12k+5[/tex]

Here, k is any integer.

Multiply both sides of [tex]b=12k+5[/tex] by 8

[tex]8b=8(12k+5)\\8b=8(12k)+40[/tex]

write 40 in terms of 12

[tex]40=36+4=12(3)+4[/tex]

[tex]8b=8(12k)+12(3)+4\\8b=12(8k+3)+4[/tex]

Therefore,

8 b mod 12 is equal to 4.

The oakville high school marching band band sold gift wrap to earn money for a band trip. Solid color gift wrap sells for $3.50 per roll.The band needs to earn $2500 for an upcoming competition. If the bad Sells 325 rolls of printed paper,write and solve a linear equation to find the number of solid paper they must sell

Answers

2500=1137.5+3.5(x)
x= 389.2857142857143 or 390

simplify

(x+4)−(x−1)

Answers

(x+4)−(x−1) simplified = 5

Answer:

5

Step-by-step explanation:

[tex](x+4)−(x−1)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=x+4-\left(x-1\right)\\\\-\left(x-1\right):\quad -x+1\\=x+4-x+1\\\\\mathrm{Simplify}\:x+4-x+1:\\\quad 5\\\\[/tex]

solve 3x+11=k for x

a. x=k-11
b. x= k+11/3
c. x= k-11/3
d. x= 3k-11

Answers

I think it’s C because but I’m not really sure because I got x=k/3-11/3

if 5x-7=13, what is the value of 10x-14

Answers

Answer:

10x-14=26

Step-by-step explanation:

x = 4

10 x 4 = 40

40 - 14 = 26

Answer:

26

Step-by-step explanation:

In order to answer this question, we must first find what x equals, so we need to solve for x in the equation 5x - 7 = 13:

5x - 7 = 13

     +7   +7

5x = 20

/5     /5

x = 4

Now, we plug in 4 for 'x' in the equation 10x - 14:

10(4) - 14 =

40 - 14 =

26

So, 10(4) - 14 = 26

Hope this helps :)

What are the features of the quadratic function f(x) = x^2 + 10x + 21?

A) Vertex = (-5,-4), y-intercept = (0,21), x-intercepts = (-7,0) and (-3,0), axis of
symmetry is x = -5

B)
Vertex = (5,4), y-intercept = (0,-21), x-intercepts = (-7,0) and (-3,0), axis of
symmetry is x = 5

C)
Vertex = (-4,-5), y-intercept = (0,21), x-intercepts = (-7,0) and (-3,0), axis of
symmetry is x = -4

D)
Vertex = (-5,-4), y-intercept = (21,0), x-intercepts = (3,0) and (7,0), axis of
symmetry is x= -5

Answers

The features of the quadratic function f(x) = x^2 + 10x + 21  are Vertex = (-5,-4), y-intercept = (0,21), x-intercepts = (-7,0) and (-3,0), axis of symmetry is x = -5 so option (A) will be correct.

What is a quadratic equation?

An algebraic equation of the second degree in x is a quadratic equation. The quadratic equation is written as ax2 + bx + c = 0, where x is the variable, and a must not be zero.

For example 3x² + 6x + 8 = 0 here x has highest term as 2 and coefficient of x² is not zero.

The standard form of a quadratic equation is ax² + bx + c

The x vertex is given -b/2a

So,

x-vertex = -10/2 = -5

So y = (-5)² + 10(-5) + 21 = -4

So vertex is (-5, -4)

The Y-intercept is given as (0,y)

So,

y = 21

Therefore

y-intercept = (0,21)

the x-intercept is given as (x,0)

So,

x = -7 , -3

Therefore

x-intercepts = (-7,0) and (-3,0)

The Axis of symmetry is given by -b/2a

So,

⇒ -10/2 = -5

Hence "Vertex = (-5,-4), y-intercept = (0,21), x-intercepts = (-7,0) and (-3,0), axis of symmetry is x = -5".

For more about the quadratic equation,

https://brainly.com/question/17177510

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The balance of an investment account is $308 more than the balance 4 years ago. The current balance of the account is $4708. What was the balance 4 years ago?

Answers

Answer:

$4,400

Step-by-step explanation:

Key: B stands for balance.

b+308=4708

b=4,708-308

b=$4,400

m
7=
2+3
Show some work

Answers

Answer:5?

Step-by-step explanation:2+3 is 5 unless your doing some other math?

You are multiplying as many as you want 5s and as many as you want 2s, at least one of each. What could the last digit of the product be?

Answers

Answer:

0

Step-by-step explanation:

It is always going to be 0 because there is always going to be a 2 and a 5 that multiply to make the units digit zero.

I hope this could help you.

Answer:

0

Step-by-step explanation:

any multiple of 5 ends in 5 or 0

it cant end in 5 as then it wouldn't be an even number

so its 0

22. Find the area of the figure pictured below.

Answers

Answer:

35

Step-by-step explanation:

The area of given figure is, 35 meter².

What is mean by Rectangle?

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

We have to given that;

The figure is shown in figure.

Now, We know that;

⇒ Area of rectangle = Length × Width

So, The area of figure is,

⇒ 9 × 3 + (7 - 3) × 2

⇒ 27 + 4 × 2

⇒ 27 + 8

⇒ 35 meter²

Learn more about the rectangle visit:

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I NEED HELP NOW
Geoffrey is evaluating the expression StartFraction (negative 3) cubed (2 Superscript 6 Baseline) Over (Negative 3) Superscript 5 Baseline (2 squared) EndFraction as shown below.
StartFraction (negative 3) cubed (2 Superscript 6 Baseline) Over (Negative 3) Superscript 5 Baseline (2 squared) EndFraction = StartFraction (2) Superscript a Baseline Over (negative 3) Superscript b Baseline EndFraction = StartFraction c Over d EndFraction

Answers

The mathematical expression does not seem clear but I have made an attempt to make sense of what is implied.

Answer:

a = 4, b = 2, c = 16, d = 9

Solving the first part of the question by indices,

Comparing the rightmost term with the second term in the question,

a = 4, b = 2

Solving on,

Comparing with the final term in the question,

c = 16 and d = 9

Therefore,

a = 4, b = 2, c = 16, d = 9

pls give brainest

Answer:

A - 4

B - 2

C - 16

D - 9

Step-by-step explanation:

Just took the test on edg 2020

Divide (3x^5-7x^3+5x^2+x-5)/(x^2-1)

Answers

67, the b and the c are yes

7. A group of 140 tourists are going on a tour. The tour guide rents
15 vans. Each van holds 9 tourists.
Part A
Write a division problem that can be used to find the number of
vans needed to carry the tourists. Then solve.

Answers

Answer:

16

Step-by-step explanation:

140 divided by 9 = 15.5

you need 16 vans to hold 140 tourists

anyone wanna bang? ​

Answers

Answer:

me

Step-by-step explanation:

Answer:

Yes pls

Step-by-step explanation:

im thirsty my guy

Find the distance between the two points rounding to the nearest tenth (if necessary),
(5,-4) and (0,8)

Answers

Answer:

13

Step-by-step explanation:

Answer: 13

Step-by-step explanation:

The distance formula between two points is:

[tex]c = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]

Our points are as follows -

[tex]x_2 = 0, x_1 = 5\\y_2 = 8, y_1 = -4[/tex]

If we plug them in:

[tex]c = \sqrt{(0 - 5)^2 + (8 - (-4))^2}[/tex]

All we need to do now is simplify

[tex]c = \sqrt{(-5)^2 + (12)^2}[/tex]

[tex]c = \sqrt{25 + 144}[/tex]

[tex]c = \sqrt{169} = 13[/tex]


[tex](789) \times 2575 - 58 )[/tex]

Answers

i got 2031617 but i used a calculator uhm how should i solve it
Solutions Solving Steps 789 (2575-58) Calculate 789 x 2517 Multiply Solution 1985913 Alternative Form 1.985913 x 10°

Change each percent to a decimal or a mixed decimal
43%
2 1/2%
13.6%
521%

Answers

43/100 = 0.43

21/2/100 = 0.105

13.6/100 = 0.136

521/100 = 5.21

What's the lateral area of the following cone?​

Answers

Answer:

Since the base of a cone is a circle, we substitute 2πr for p and πr2 for B where r is the radius of the base of the cylinder. So, the formula for the lateral surface area of a right cone is L. S. A=πrl , where l is the slant height of the cone .

Step-by-step explanation:

I tired??? sorry if it's wrong???

Other Questions
what is the greates common factor of 12 and 24 Help me pleaseee thank you In advance please explain to me too so i know what to do next time :) A box of baseball cards is $25.00 with %15 off. What is the sale price of the box of cards? In other words, how much is it aftertake the discount off) Is ExxonMobile a product or service company A sports car of mass 1.00x103 kg can accelerate from rest to 30.0 m/s in 7.00 s. What is the average forward force on the car? A graph of kinetic energy vs the mass of an object is ______________? What were the Olmecs? heres another one :) :) -0.5-(-.8)+0.8+(-.5) The Campbell Company is considering adding a robotic paint sprayer to its production line. The sprayer's base price is $880,000, and it would cost another $19,500 to install it. The machine falls into the MACRS 3-year class, and it would be sold after 3 years for $463,000. The MACRS rates for the first three years are 0.3333, 0.4445, and 0.1481. The machine would require an increase in net working capital (inventory) of $14,500. The sprayer would not change revenues, but it is expected to save the firm $330,000 per year in before-tax operating costs, mainly labor. Campbell's marginal tax rate is 25%. A. What is the Year 0 net cash flow?B. What are the net operating cash flows in Years 1, 2, and 3?C. What is the additional Year-3 cash flow (i.e., the after-tax salvage and the return of working capital)?D. Based on your IRR analysis, if the projects cost of capital is 12%, should the machine be purchased?. I will give the brainiest! Choose the point on the terminal side of -45(-3,-3)(4,-4)(5,5)(-2,2) 1) Consider the dissolution of CaCO3 compound in aqueous medium.a) Write down the equation of the chemical reaction that represents this dissolution.b) Write the expression of the equilibrium constant for this reaction.c) Explain how the addition of a certain amount of sodium carbonate towater would affect this balance2) The equilibrium constant for the reaction 2 SO2(g) + O2(g) 2 SO3(g) has a Kc value = 2.5x10^10 to 500 K. Find the kc value for each of the following reactions at the same temperature (a) SO2(g) +1/2 O2 SO3(g). (b) SO3(g) SO2(g)+1/2 O2(g)(c) 3SO3(g)+ 3/2 O2(g) 3SO3(g) 3) A reaction mixture consisting of 0.400 mol H 2 and 1.60 mol I 2 was prepared in a 3.00 L flask and heated. In balance, 60.0% of the hydrogen gas reacted. What is the equilibrium constant for the reaction H 2(g) + I 2(g) 2 HI(g) at this temperature? is copper metal mixed with water an: a) elementb) compoundc) heterogeneous mixtured) homogeneous mixture A baby weighs 3.91 kg and measures 51.4 cm. Convert the baby's weightto pounds and its length to inches 74 2072= PLEASE HELPPPP WILL GIVE YOU BRAINLISTAshley is putting together a square bulletin board for her new room. The area of the bulletin board is 196cm^2 . What is the length of each side of the bulletin board? shape is square Which of the following values are solutions to the inequality 61+3x? convert into negatif il se lve toujours 6h Karen is trying to decide which home phone company to use. Phone Home was a monthly charge of$45 and charges $0.01 per minute. CallMeMaybe has a monthly charge of $10 and charges $0.05 perminute. Write an inequality to represent the number of minutes used in order for Phone Home tohave the better deal. Just helping out anyone who might need this answer.Which are characteristics of Sportsmans Paradise? Check all that apply. The area is known for its excellent ocean fishing. There are many rolling hills, forests, and lakes. Many people who settled here were Anglo-Saxon or Celtic.The region is located in the southern part of the state. The region is known for its many recreational activities.The answers are: B, C and E