Pls help me on this problem I’m confused

The table is an illustration of a quadratic regression model

The function that best models the data is y = -60.4x^2 +348.1x -334.2

To determine the function that models the data, we make use of a graphing calculator.

Using the graphing calculator, we have the following calculation summary

a = -60.4

b = 348.1

c = -334.2

A quadratic regression model is represented as:

y = ax^2 + bx + c

So, we have:

y = -60.4x^2 +348.1x -334.2

Hence, the function that best models the data is y = -60.4x^2 +348.1x -334.2

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Answer: Correct answers are B, D,E

Step-by-step explanation:

Answer:

First choice

Step-by-step explanation:

Check if a relation is a function by looking at the x's.

No repeated x's? Then it's a function.

Repeated x's but the y is the same y both times? It's a function.

Repeated x's and different y's? NOT A FUNCTION.

see image

Answer:

C. 108

Step-by-step explanation: This is the correct answer on Edge 2021, just took the quiz and made a 100%. Hope this helps ^-^.

The value of 'x' is 108° . Option C

From the illustration,

Angle RQS is at Q = x degrees

Angles KLM is at L = x - 36 degrees

Note that they are corresponding angles

Corresponding angles sum up to 180°

Then equate both angles to 180 degrees

x + x - 36 = 180°

Collect like terms

2x = 180 + 36

2x = 216

Make 'x' subject of formula

x = 216 / 2

x = 108°

Therefore, the value of 'x' is 108° . Option C

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Answer:

x = - 12, y = 9

Step-by-step explanation:

Given the 2 equations

3x + 6y = 18 → (1)

x + 3y = 15 → (2)

Multiplying (2) by - 3 and adding to (1) eliminates the term in x

- 3x - 9y = - 45 → (3)

Add (1) and (3) term by term to eliminate x

- 3y = - 27 ( divide both sides by - 3 )

y = 9

Substitute y = 9 into either of the 2 equations and evaluate for x

Substituting into (2)

x + 3(9) = 15

x + 27 = 15 ( subtract 27 from both sides )

x = - 12

Solution is (- 12, 9 )

Answer:

The length of the ladder is 10:44 meters.

Step-by-step explanation:

Base of the ladder is 3 meters away from the house. So base =3 m

one side 10 meters and base is 3 meters

Answer:

90

Step-by-step explanation:

Step 1:

2/5x + 10 = 30      Equation

Step 2:

2/5x = 20      Subtract 10 on both sides

Step 3:

x = 20 ÷ 2/5     Divide

Step 4:

x = 20 × 5/2     Multiply

Answer:

x = 90

Hope This Helps :)

Answer:

Step-by-step explanation:

f(-5) = -(-5) + 1

        = 5 +1

        = 6

Answer:

f(-5) = -(-5) + 1

       = 5 +1

       = 6

Step-by-step explanation:

can i maybe get branlyest i only have 1 one rn it would help

9514 1404 393

Answer:

  1 solution

Step-by-step explanation:

The coefficients of x are different on each side of the equal sign, so this equation has one solution.

_____

Additional comment

If the x-coefficients are the same on each side of the equal sign, then you need to look at the constants. If they are the same, there are an infinite number of solutions; if they are different, no solutions.

This equation simplifies to ...

  3x -3 = 2x +9

  x = 12 . . . . . . . . add 3-2x to both sides

The solution of expression by applying distributive property and combining like terms,

⇒ x = 12

Given that,

The mathematical expression is,

⇒ 3(x - 1) = 2x + 9

Now, simplify the expression by applying distributive property and combining like terms,

⇒ 3(x - 1) = 2x + 9

Apply distributive property,

⇒ 3x - 3 = 2x + 9

Combine like terms,

⇒ 3x - 2x = 9 + 3

Therefore, the solution of expression is,

⇒ x = 12

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Answer:

12

Step-by-step explanation:

84-54=30

30/2.5=12

Answer:

$39.75

Step-by-step explanation:

0.2 X 30 = 6

45.75 - 6 = 39.75

Answer:

Step-by-step explanation:

1- Distribute

2-Combine like terms

3. divide on both sides

4- subtract from both sides

Since a regular polygon has equal interior angles, then the measure of the angle marked x is: 132°.

A regular polygon is any n-sided polygon that has equal interior angles and equal sides.

Thus:

Therefore:

x = 360 - 120 - 108

x = 132°

Thus, since a regular polygon has equal interior angles, then the measure of the angle marked x is: 132°.

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Answer: After 5 years it’ll cost  $90.767.

Step-by-step explanation:

Answer:

5x+6

Step-by-step explanation:

Im not sure if its 3*2 (like multiplying) or 3x times 2?

Answer:

hello

they are

1 - 3 - 5 and  15

Step-by-step explanation:

Answer:

Step-by-step explanation:

The best way to check a question like this one is to graph it. I've done that for you. The red line is the parent function; the blue line is parent shifted 4 units left.

Yes, you are right.

Answer:

112.50

Step-by-step explanation:

10% added 7.50 is 75

5% added to 7.50 is is 37.50

75+37.50= 112.50

Find the circumference and area of a circle with a radius of 11 inches.

Answer:

69.12

Answer:

Step-by-step explanation:

focus of the parabola is (2,0) and directrix is x=-2. Here,a=2.So, Equation becomes, y2=4∗2x⇒y2=8x, which is the required equation of parabola.

The equation of a parabola with the given focus and directrix is x²-10x+74=14y.

A parabola refers to an equation of a curve, such that a point on the curve is equidistant from a fixed point, and a fixed line

Given that, a parabola has focus (5,7) and directrix y=0.

When the focus (h, k) of a parabola and the equation of the directrix y = c are given, the equation of the parabola is given by (x-h)²+k²-c²=2(k-c)y

Here, y=c=0

Now, (x-5)²+7²-0²=2(7-0)y

x²-10x+25+49=14y

x²-10x+74=14y

Therefore, the equation of a parabola is x²-10x+74=14y.

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Answer:

i am so srry but i dont know but good luck

Step-by-step explanation:

Answer:

your answer would be B

Step-by-step explanation:

every item is 9 dollars divide the cost by the number of items it is always 9 meaning 9 is the constant. hope this helps.

Answer:

18  

To verify the constant you only have to verify every option by adding those options by itself and the one that matches your information is the correct answer

Answer:

The answer is 12.

Answer:

12

Step-by-step explanation:

To Find Median;

Solve;

Least to Greatest:

5, 5, 9, 12, 18, 22, 25

5, 5, 9, 12, 18, 22, 25

5, 5, 9, 12, 18, 22, 25

5, 5, 9, 12, 18, 22, 25

Hence Median = 12.

[RevyBreeze]

Answer: 98 Degrees

Step-by-step explanation: A straight line is 180 degrees so, Take 180 minus 82 : 180 - 82 = 98 Degrees

well, from 800 to 600 is 200 bucks.

if we take 800 to be the 100%, what is 200 off of it in percentage?

[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} 800 & 100\\ 200& x \end{array} \implies \cfrac{800}{200}=\cfrac{100}{x}\implies 4=\cfrac{100}{x} \\\\\\ 4x=100\implies x=\cfrac{100}{4}\implies x=25[/tex]

Answer:

(b) What is the probability that exactly two of the three friends will sit next

to each other?

7E-10 You and two of your friends are in a group of 10 people. The group is

randomly split up into two groups of 5 people each. Specify an appropriate

sample space and determine the probability that you and your two friends

are in the same group.

7E-11 You are dealt a hand of four cards from a well-shuffled deck of 52

cards. Specify an appropriate sample space and determine the probability

that you receive the four cards J, Q, K, A in any order, with suit irrelevant.

7E-12 You draw at random five cards from a standard deck of 52 cards.

What is the probability that there is an ace among the five cards and a king

or queen?

7E-13 Three balls are randomly dropped into three boxes, where any ball is

equally likely to fall into each box. Specify an appropriate sample space and

determine the probability that exactly one box will be empty.

7E-14 An electronic system has four components labeled as 1, 2, 3, and 4.

The system has to be used during a given time period. The probability

that component i will fail during that time period is fi

for i = 1, . . . , 4.

Failures of the components are physically independent of each other. A

system failure occurs if component 1 fails or if at least two of the other

components fail. Specify an appropriate sample space and determine the

probability of a system failure.

7E-15 The Manhattan distance of a point (x, y) in the plane to the origin

(0, 0) is defined as |x| + |y|. You choose at random a point in the unit square

{(x, y) : 0 ≤ x, y ≤ 1}. What is the probability that the Manhattan distance

of this point to the point (0, 0) is no more than a for 0 ≤ a ≤ 2?

7E-16 You choose at random a point inside a rectangle whose sides have the

lengths 2 and 3. What is the probability that the distance of the point to the

closest side of the rectangle is no more than a given value a with 0 < a < 1?

7E-17 Pete tosses n + 1 fair coins and John tosses n fair coins. What is the

probability that Pete gets more heads than John? Answer this question first

for the cases n = 1 and n = 2 before solving the general case.

7E-18 Bill and Mark take turns picking a ball at random from a bag con-

taining four red balls and seven white balls. The balls are drawn out of the

bag without replacement and Mark is the first person to start. What is the

probability that Bill is the first person to pick a red ball?

3

Answer:

its not b

Step-by-step explanation:

its c 27160 we went over this with my teacher