Use quadratic regression to find a
function that fits the following
points.
(7,11), (10,-16), (0,4)
y = [ ? ]x2 + [ ]x + [ ]

9514 1404 393

Answer:

  A

Step-by-step explanation:

It is generally useful to look at the answer choices. Here, we observe that all of them have y with a positive coefficient on the left side of the inequality. This makes it relatively easy to choose the set of inequalities that matches the graph.

The shading is below the solid line and above the two dashed lines. This means we are looking for a set of inequalities that looks like ...

  ay + ( ) ≤ ( ) . . . . . shading below a solid line

  y + ( ) > ( ) . . . . . . shading above a dashed line

  y + ( ) > ( )

The only set of inequalities with these relationships is choice A.

Answer:

1) answer 3)88 students for 4 classes

10)answer=285parts

The Revenue function for the number of jerseys x sold is ; R(x) = 90x

The profit function from the sale of x jerseys is ; P(x) = - 0.2x² + 80x - 1500

The number of Jerseys to manufacture in other to make profit = 20

The revenue made is the total amount made from the sale of the hickey jerseys :

Sales price per jersey = $90

Hence, the revenue made, R(x) = 90x

The Cost function, C(x) = C(x) = 1500 + 10x + 0.2x²

Recall :

Profit = Revenue - Cost

Hence,

P(x) = R(x) - C(x)

P(x) = 90 - (0.2x² + 10x + 1500)

P(x) = 90 - 0.2x² - 10x - 1500

P(x) = - 0.2x² + 80x - 1500

To make profit, equate P(x) to 0 ;

0.2x² - 80x + 1500 = 0

Using a quadratic calculator :

x = 380.22 or x = 19.72

Hence, to make a profit, the number of jerseys that must be sold is 20.

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Answer:

5z

Step-by-step explanation:

Product means multiply

5z

Answer:

26

Step-by-step explanation:

a triangle messures 180

you already have one angleso allyou do is subtract

180-128= 52

the since you are missing two angles all you do is divide that by 2

52/2=26  

Answer:

C.

Step-by-step explanation:

Answer:

[tex] - \frac{5}{7} [/tex]

Step-by-step explanation:

[tex] - \frac{2}{7} - \frac{3}{7} [/tex]

[tex] \frac{ - 2 - 3}{7} [/tex]

[tex] = \frac{ - 5}{7} [/tex]

Answer:

The time passed between 8:15 to 2:30 is 6 hours 15 minutes.

Answer:

11

Step-by-step explanation:

area of square is side length squared so [tex]\sqrt{120}[/tex] =10.95 or approximatly 11

Answer:

1)4

2)28

3)18.3

4)38.5

5)22.5

6)19.25

7)25.5

8)69.666

9)6.5

10)22.666

Step-by-step explanation:

1)8/5*5/2=4

2)21/5*20/3=7*4

                  =28

3)33/4*20/9=11*5/3

                   =55/3

                   =18.33...

                   =18.3

4)35/6*33/5=7*11/2

                   =77/2

                   =38.5

5)22/8*90/11=45/2

                    =22.5

6)11/3*21/4=11*7/4

                 =77/4

                 =19.25

7)34/5*15/4=34*3/4

                  =25.5

8)22/3*57/6=11*19/3

                   =209/3

                   =69.666

9)39/8*4/3=13/2

                 =6.5

10)17/2*8/3=17*4/3

                 =68/3

                 =22.666

Hope you got this

If you have any doubt please ask me

If you need this in fraction form just check the attachment

Explanation/answer

Explanation: Because the mound builders built cities and traded far and wide throughout the midwestern region. Which Native American groups built cities? Answer Expert Verified The varying cultures collectively called Mound Builders were inhabitants of North America who, during a 5,000-year period, constructed various styles of earthen mounds for religious and ceremonial, burial, and elite residential purposes. DONT FORGET TO GIVE BRAINILEST

Answer:

mound builders

Step-by-step explanation:

Because the mound builders built cities and traded far and wide throughout the Midwestern region

Answer:

108 cm²

Step-by-step explanation:

Area of a rectangle, A = length, l × width, w

Perimeter of a rectangle = (2 × length) + (2 × width)

42 cm = 2l + 2w

but length = w + 3cm

42 cm = 2(w + 3cm) + 2w

42 cm = 2w + 6cm + 2w

42 cm = 6cm + 4w

4w = (42 - 6) cm

4w = 36 cm

》w = 9cm

》l = w + 3cm = 9cm + 3cm

l = 12 cm

Area = 12 × 9 = 108 cm²

Answer:

37 kg

Step-by-step explanation:

Put the numbers in order from least to greatest

30, 32, 35, 37, 40, 42, 45

cross numbers out until you get to the middle number

30, 32, 35, 37, 40, 42, 45

32, 35, 37, 40, 42

35, 37, 40

37 kg

Explanation :

We know that, the median of an ungrouped data is the number in the middle of sequence when it is arranged ascending or depending and the number of terms is odd.

therfore , the sequence will be :

30kg , 32kg , 35kg , 37kg , 40kg , 42kg , 45kg

Here, 37 kg is the middle value i.e median of the given data .

hope it helps !!

Answer:

the first one is -1 and the second one is -48

Answer:

According to Answers.com the answer is 7.04 1012

And according to AnswerGuru its 7.04 trillion = 7.04 x 10¹²

Answer:

ok

Step-by-step explanation:

Answer:

none of the above the 7^8/8 is equivalent to

Answer:

Mean: 87.5

Mode: NO mode

Median: 88

Hope this helps!!!!! :)

mean is 86 , median is 85 and mode is 93 , range is 10

Answer:

36 over 6

Step-by-step explanation:

36 ÷ 6=12÷2

a= 9/11 and b=7/10

now,

ab = (9/11)×(7/10)

=63/110.......

the value of ab is 63/110 when a = 9/11 and b = 7/10

Simplifying procedures is one way to achieve uniformity in job efforts, expenses, and time. It reduces diversity and variation that is pointless, harmful, or unneeded. Parenthesis, exponents, multiplication, division, addition, and subtraction are all referred to as PEMDAS. The order of the letters in PEMDAS informs you what to calculate first, second, third, and so on, until the computation is finished, given two or more operations in a single statement.

Given, the values of a and b are 9/11 and 7/10 respectively

thus,

ab = 9/11 * 7/10

simplifying it

ab = 63/110

Therefore, the value of ab is 63/110 when a = 9/11 and b = 7/10

Learn more about Simplification here:

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Answer: The answer is y = 2x + 2

The answer would be 10 I believe.

Step-by-step explanation:

t coefficient = 1

+ 8t coefficient = 8

-t coefficient =( -1)

Answer:

[tex]f(x) = 5 \tan(x + \frac{\pi}{2} )[/tex] (third option)

Step-by-step explanation:

attached

Answer:

The opposite of 50 feet below sea level is 50 feet above the sea level.

Step-by-step explanation:

Below is negative 50 and above is positive 50 so its +50 the opposite of -50.