Can someone actually help me with this and not just answer to get points plz im really need help with this

Answer:

8

Step-by-step explanation:

The average rate of change for this quadratic function for the interval from x = 0 to x = 2 is -2

A relation is a function if it has only One y-value for each x-value.

The average rate of a function f(x)  from x=a to x=b is given as:

= f(b)-f(a)/b-a

Clearly we are asked to find the average rate of change from x=0 to x=2.

i.e. a=0 and b=2

Also, from the graph it could be observed that:

f(0)=1

and f(2)=-3

=f(2)-f(0)/2-0

=-3-1/2

=-4/2

=-2

Hence, the average rate of change for this quadratic function for the interval from x = 0 to x = 2 is -2

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Median is better than mean as it is not affected by extremely high or low values in the same way that the mean is

The median is a measure of central tendency, like the mean, but it is not affected by extremely high or low values in the same way that the mean is. Because of this, the median is often a better measure of central tendency when there are outliers in the data, or when the data is skewed (not normally distributed). For example, consider the following set of numbers: 1, 2, 3, 100. The mean of these numbers is 26, but the median is 3, which is a better representation of the "typical" value in this set.

However, the mean is still a useful measure and has its own advantages. For example, the mean is sensitive to every value in the data set, so it can provide a more comprehensive summary of the data. Additionally, the mean is easier to work with mathematically than the median, so it is often used in statistical tests and calculations.

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Answer:

is it a rational number

Step-by-step explanation:

if wrong pls forgive me

Answer: The answer is x-y = -2

Answer:

The bridge is about 193.52 ft above the river and the length of the bridge above the arch is about 1250.51 ft

Step-by-step explanation:

  The arch is represented by the equation

y = -  .000495 x² + .619 x where x and y are in ft .

We can write this equation in the form

y = - a x² + bx

The vertex is on the line

x = b / 2a

= .619 / 2 x  .000495

= 625.25

Putting the value in the equation above

y =  -  .000495 ( 625.25)²

= 193.51 ft

This value will give us the depth of river .

To know the width of bridge we shall have to solve the quadratic equation

-  .000495 x² + .619 x = 0

x = [- .619 ± √ ( .619)² - 0] / 2 x .000495

= - .619 + 625.25 and

x = - .619 - 625.25

Difference = 625.25 x 2 = 1250 .51 ft.

So the width of the bridge will be 1250 .51 ft .

Naty used an average of 39.72 gallons of water per day over 2.3 days.

To find the average amount of water Naty used per day, we divide the total amount of water used (91.36 gallons) by the total number of days (2.3 days). In this case, Naty used 91.36 gallons of water over 2.3 days. Plugging these values into the formula, we get: 91.36 gallons / 2.3 days = 39.72 gallons/day. The average is a measure of central tendency that represents the typical value in a set of data. It is calculated by adding up all the values in the data set and dividing by the number of values. This means that Naty used an average of 39.72 gallons of water per day.

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The 90% confidence interval is: (2.51, 3.22)

It is a boundary of values which is eventually to comprise a population value with a certain degree of confidence. It is usually shown as a percentage whereby a population means lies within the upper and lower limit of the provided confidence interval.

We have the following information :

The level of significance is calculated as:

\(\alpha =1-c\\\\\alpha =1-0.90\\\\\alpha =0.10\)

The degrees of freedom for the case is:

df = n - 1

df = 15 - 1

df = 14

The 90% confidence interval is calculated as:

=x(bar) ±\(t_\frac{\alpha }{2}\), df \(\frac{s}{\sqrt{n} }\)

= 2.86 ±\(t_\frac{0.10 }{2}\), 14 \(\frac{0.78}{\sqrt{15} }\)

= 2.86 ± 1.761 × \(\frac{0.78}{\sqrt{15} }\)

= 2.86 ± 0.3547

= (2.51, 3.22)

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Answer:

First, you have to find the unit price for each brand by dividing the pack price by the number of pencils in each pack.

Brand A: $3.29/12= $0.27

Brand B: $8.99/28= $0.32

With this information, you can say that the brand that is the better buy based on the unit price is Brand A because it has a cheaper price per unit.

Answer:

y= 9x-7

Step-by-step explanation:

Equation of a straight line:

y = mx + b ------(i)

Step by Step Solution:

Step 1:

y = 2, x = 1

By putting above values in equation (i)

2 = 9 (1) + b

2 = 9 + b

-7 = b

b = -7

y = 9x - 7

Answer:

-2x+11

Step-by-step explanation:

:)))

Answer:

-2x+11

Step-by-step explanation:

The highest score obtained in this group of 12 scores is 19

What is the distribution in statistics?

In statistics, a distribution refers to the way in which a variable is spread out or distributed across different values. A distribution describes the probability of different outcomes for a variable, and can be visualized using graphs such as histograms, box plots, and probability density functions.

The distribution in Table 2-3 shows frequency (f) for different score ranges (x). Without knowing the exact scoring system, we can't say for certain what the highest score obtained in this group of 12 scores is. However, we can determine the upper limit of the highest score range by multiplying the upper limit of the range by its frequency:

Upper limit of 20-24 range = 24

Frequency of 20-24 range = 2

Upper limit of 15-19 range = 19

Frequency of 15-19 range = 5

Upper limit of 10-14 range = 14

Frequency of 10-14 range = 4

Upper limit of 5-9 range = 9

Frequency of 5-9 range = 1

To find the highest score, we need to determine the upper limit of the score range that has the highest frequency. In this case, the highest frequency is 5, which corresponds to the range 15-19.

Hence, the highest score range is 15-19, and the highest score within that range is the upper limit of that range, which is 19. So, the highest score obtained in this group of 12 scores is 19 (assuming the scoring system is such that higher scores correspond to higher ranges).

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Answer:

P = 98 feet

Step-by-step explanation:

need to find the hypotenuse so we can use the Pythagorean Theorem:

24² + 7² = c²

c² = 576 + 49

c = \(\sqrt{625}\)

c = 25

P = 2(25) + 48

P = 50 + 48

Answer:

254 cm² (to 3 s.f.)

Step-by-step explanation:

Area of shaded region

= area of large circle -area of smaller circle

\(\boxed{area \: of \: circle = \pi {r}^{2} }\)

Radius of large circle= 15cm

Radius of smaller circle= 12cm

Area of shaded region

= π(15²) -π(12²)

= 225π -144π

= 81π

= 81(3.14)

= 254.34

= 254 cm² (3 s.f.)

Part A: It can be written as y = sin(x - c), where c represents the amount of phase shift. Part B: We can use the equation y = sin(x - a), where a represents the amount of rightward shift. Part C: The period is the distance between corresponding points on the graph, such as two peaks or two troughs. Part D: There are infinitely many equations that can be written to map the parent sine function onto itself.

1. Part A: To introduce a phase shift to the parent sine function y = sin(x), we subtract a constant value c from the input variable x. The equation y = sin(x - c) has an identical graph to the parent sine function, but it is shifted horizontally by an amount of c units to the right or left. The value of c determines the amount of phase shift, where a positive value shifts the graph to the right, and a negative value shifts it to the left.

2. Part B: To map the parent sine function onto itself by shifting it to the right, we can use the equation y = sin(x - a), where a represents the amount of rightward shift. By subtracting a constant value a from the input variable x, the graph is shifted a units to the right while maintaining the same shape.

3. Part C: The equations in parts A and B indicate that the period of the sine function remains the same. The period of the sine function is the distance between corresponding points on the graph, such as two peaks or two troughs. Introducing a phase shift or rightward shift does not alter the period; it only changes the starting point or position of the graph.

4. Part D: There are infinitely many equations that can be written to map the parent sine function onto itself. By combining different values of phase shifts and rightward shifts, we can obtain various equations. The sine function is periodic, meaning it repeats itself indefinitely. Any combination of phase shift and rightward shift will result in the same graph repeating after a specific interval, which is the period of the sine function. Therefore, there is no limit to the number of equations that can be written to achieve this mapping.

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The majority rule of voting states that the number of votes needed for a majority is one more than the total number of votes.

The total number of votes in this problem is given as follows:

8 + 5 + 3 + 1 + 2 = 19.

Hence the number of votes needed for the majority is given as follows:

0.5 x 19 = 9.5 -> add one to the integer part = 10.

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Yes, the tangent constraint can be applied between a line and an arc in many CAD (Computer-Aided Design) software programs.

In CAD, a tangent constraint is a geometric constraint that forces two entities (lines, arcs, circles, etc.) to share a common tangent at their point of contact. When you apply a tangent constraint between a line and an arc, the software will ensure that the line and the arc are always tangent to each other at their point of intersection.

This constraint is useful for designing mechanical components, such as gears or cams, where you need to ensure that the contact between two parts is smooth and continuous. It is also commonly used in architecture, where a building's curved surfaces may need to be tangent to adjacent straight lines or walls.

In short, the tangent constraint can be applied between a line and an arc, and it is a useful tool in many different fields of design.

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The approximated area of the pentagon that has side lengths of 14.1 cm and an apothem of 12 cm is 342 square centimeters

The given parameters are:

Length, l = 14.1 cm

Apothem, a = 12 cm

The area of the pentagon is calculated using:

\(A= 0.25 * \sqrt{5 * (5 + 2\sqrt 5)} * l^2\)

So, we have:

\(A= 0.25 * \sqrt{5 * (5 + 2\sqrt 5)} * 14.1^2\)

Evaluate

A = 342

Hence, the approximated area of the pentagon is 342 square centimeters

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Answer:

342 cm2  B)

Step-by-step explanation:

edg2022

Answer:

rhombus has all angles=90 degress

Hey there! I'm happy to help!

First, let's see how many times 6 minutes fits into 20 minutes.

20/6=3 1/3

So, we are traveling 10 miles 3 1/3 times!

10×3 1/3=33 1/3

This train will travel 33 1/3 miles in 20 minutes.

Have a wonderful day! :D

m∠B = 10 and m∠Q = 10. Since ΔABC ≅ ΔPQR, the corresponding angles are congruent. Therefore, we can set up the following equation:

m∠B = m∠Q

Given that m∠B = 3v + 4 and m∠Q = 8v - 6, we can equate these expressions:

3v + 4 = 8v - 6

To solve for v, we can start by isolating the variable terms on one side of the equation and the constant terms on the other side:

4 + 6 = 8v - 3v

10 = 5v

Dividing both sides by 5:

v = 2

Now that we have the value of v, we can substitute it back into the expressions for m∠B and m∠Q:

m∠B = 3(2) + 4 = 10

m∠Q = 8(2) - 6 = 10

Therefore, m∠B = 10 and m∠Q = 10.

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Answer:

C. m^2+n^2=p^2

Step-by-step explanation:

The Pythagorean Theorem is a^2+b^2=c^2, so C is correct. This can be proven by using a triangle with the sides 3,4, and 5.

Shifting​ data, by adding a constant to each data​ value, does not change the​: Range and Interquartile Range

Basically what happens to our measures of central tendency and spread when we make changes to our data set is that:

No matter what value we add to the set, the mean, median, and mode will shift by that amount but the range and the IQR will remain the same. The same will be true if we subtract an amount from every data point in the set: the mean, median, and mode will shift to the left but the range and IQR will stay the same.

Finally, we conclude that whether we add a constant to each data point or subtract a constant from each data point, the mean, median, and mode will change by the same amount, but the range and IQR will stay the same.

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Answer:

half eaten pizza has greater circumference

Step-by-step explanation:

full eaten pizza's circumference = 2πr

= 2 * 3.14 * 7 = 43.96 inches

half eaten pizza's circumference = πd

= 3.14 * 20

=62.8 inches

On a surface analysis chart, the solid lines that depict sea level pressure patterns are called isobars.

Isobars are lines connecting points of equal atmospheric pressure at sea level. They provide a visual representation of pressure variations across a geographical area.

Isobars are typically displayed on weather maps to illustrate high and low pressure systems, as well as the strength and location of pressure gradients. High-pressure systems are indicated by circular isobars, while low-pressure systems are depicted by oval or elongated isobars.

By examining the spacing and configuration of isobars, meteorologists can interpret weather patterns and make predictions.

Areas with tightly packed isobars indicate strong pressure gradients, which signify strong winds and potentially severe weather conditions. On the other hand, widely spaced isobars suggest weaker pressure gradients and calmer weather.

Overall, isobars on a surface analysis chart are crucial in understanding and analyzing atmospheric pressure patterns and their implications on weather conditions.

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,

A bottle of apple juice in store b is $1.48 higher than store a. You can find it by comparing the price between shop a and shop b.

As per given expression y = 0.96x where y is price in dollar for x bottle in store A. Since Landon buy 14 bottle than:

y = 0.96x

y = 0.96 (14)

Y = 13.44

Then calculate the price difference for a bottle in store b and a as follow

Bottle price difference = $34.16 - $13.44

Bottle price difference = $20.72

Because of the result still for 14 bottle difference, we divide the result with 14 to find out how much more a bottle of apple juice in store b than a as follow

Per bottle price difference = $20.72 : 14

Per bottle price difference = $1.48

Hence, A bottle of apple juice in store b is $1.48 higher than store a.

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Answer:

x = -17, x = 3, and you should add 100

Step-by-step explanation:

When completing the square, I like to follow a specific method.

First, I take the b-value and divide it by 2. This gives us to, in this situation, 7.

This means that the inside value in the (x-h)^2 area will be (x+7)^2

Now we find the square of that number, so 7^2 = 49. Now we have to find the distance between the number squared and the number on the outside. So we have to find the total distance between 49 and -51. To do this, we simply add 49 to 51, and we get 100, and then we set it as a negative.

We end up with (x+7)^2 - 100. On both sides, you should add 100.

Using the quadratic formula, the solutions are also x = -17, and x =3

From the figure , and by using congruent complements theorem, the angle that is congruent to angle4 is (a) angle1  .

The "Congruent Complements Theorem" states that if two angles are complementary to same angle, then they are congruent. In other words, if two angles add up to 90 degrees, and they both complement the same third angle, then they are equal in measure.

The ∠4 and ∠5 are the complements and ∠1 and ∠5 are complements.

Which proves that :  ∠1 and ∠4 are complimentary to the same angle that is ∠5.

Therefore, the ∠ 1 is congruent to angle 4 .

The given question is incomplete , the complete question is

From the figure below , the angle 4 and angle 5 are complements and angle 1 and angle 5 are complements , By using the congruent complements theorem, which angle is congruent to angle4 ?

(a) angle1

(b) angle2

(c) angle3

(d) angle5

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The living expenses are life insurance, mortgage and clothing. Thus option (B), (C) and (D) are correct.

The expenditure or the cost associated with maintaining a bare-bones standard of living and good health Along with housing, food, clothes, healthcare, and transportation, these are the basic human needs are referred to as Living Expenses.

The living expenses such as rent, mortgage payments, utilities, maintenance, food, clothing, insurance (life, health, and accident), taxes, installment payments, medical costs, support costs when the individual is legally responsible, and other miscellaneous costs are considered an individual's "ordinary and necessary living expenses."

Therefore, it can be concluded that living expenses and cost are  life insurance, mortgage and clothing. Thus option  (B), (C) and (D) are correct.

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