for the equation, state the value of tge discriminant and the number of real solutions. 3x²-5x+8=0​

The best first step in calculating an inferential statistic for the given scenario would be to calculate the mean for older siblings.

To compare the motivation to succeed between older and younger siblings, the first step is to compute descriptive statistics for each group separately. In this case, we are interested in determining if older siblings have greater motivation.

Calculating the mean for older siblings will provide an initial understanding of the central tendency of their motivation scores. By taking the average of their responses on the 1-7 scale, we can obtain a measure of their typical motivation level.

Further statistical analysis, such as hypothesis testing or calculating effect sizes, can be performed using the mean values of both older and younger siblings. However, the initial step is to calculate the mean for older siblings to establish a baseline understanding of their motivation level.

In the given scenario, the best first step in calculating an inferential statistic is to calculate the mean for older siblings. This provides a starting point to compare their motivation to succeed with that of their younger siblings.

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complete question- When should you calculate and use a "weighted average" for pooled variance in an inferential t-test? When sample sizes are equal. When sample sizes are unequal: When data is invalid. When data is unreliable: Question 17 1 pts A researcher wants to know if older siblings have greater motivation to succeed than their younger siblings. The researcher asks a group of 50 sibling pairs how motivated they are to succeed on a scale of 1-7. As discussed in lecture, what would be the best first step in calculating an inferential statistic? Calculate the standard deviation for older siblings. Calculate the mean for younger siblings. Calculate the mean for older siblings. Subtract the motivation of younger sibling from the other (older sibling).

Answer: 88 kg

Step-by-step explanation:

ARE YOU READY FOR THIS SWAG EXPLANATION? prepare yourself.

\(110*0.8\)

why are we doing this?

because 110 is his weight and 0.8, when multiplied by 110, will give us 80 PERCENT OF HIS WEIGHT.

slam that equation into a calculator like putting an apple pie in the oven and you get

88 kg

Based on the information illustrated, the analysis implies the following:

a. nonstatistical.

b. statistical.

c. nonstatistical

d. statistical

A statistical question is one that can be answered by collecting varying amounts of data. A statistical question is one that does not have a single answer. Instead, you should expect a range of responses.

Identifying a statistical question necessitates knowledge of statistics. Statistics is a mathematical study that involves the collection, analysis, and interpretation of changing data. A statistical question will ask a question with a variable answer; data must be collected and analyzed, and the answer will provide an explanation of the information.

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statistical or nonstatistical  What's the difference? is that statistical is of or pertaining to statistics while nonstatistical is not statistical.

Statistical sampling is more objective and uses probability to determine the appropriate sample size. While it is does not eliminate sampling risk, statistical sampling allows the auditor to measure sampling risk and take steps to control it. Nonstatistical sampling relies more on the auditor's judgment.

Thus, the correct answer is nonstatistical statistical nonstatistical statistical

Answer:

D

Step-by-step explanation:

Answer:

1) y=1/8x+2

2) y=1/35x+100

Step-by-step explanation:

Answer: 2x-8

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Given

S = \(\frac{C-\frac{1}{4}I }{C+I}\) ( multiply both sides by C + I )

S(C + I) = C - \(\frac{1}{4}\) I ← distribute left side

SC + SI = C - \(\frac{1}{4}\) I ( multiply through by 4 to clear the fraction )

4SC + 4SI = 4C - I ( add I to both sides )

4SC + 4SI + I = 4C ( subtract 4SC from both sides )

4SI + I = 4C - 4SC ← factor out I from each term on the left side

I(4S + 1) = 4C - 4SC ← factor out 4C from each term on the right side

I(4S + 1) = 4C(1 - 4S) ← divide both sides by (4S + 1)

I = \(\frac{4C(1-4S)}{4S+1}\)

Answer:

Step-by-step explanation:

andrea lb: 164.5cm

andrea ub: 165.5 cm

joel lb: 165

joel ub: 175

Answer:

3x² - 12x - 7

Step-by-step explanation:

Subtract the numberS

-2x²+4+5x²-11 - 12x

-2x²-7+5x² - 12x

Combine like terms

-2x²-7+5x² - 12x

3x²-7-12x

Rearrange terms

3x²-7-12x

3x²-12x-7

Solution

3x² - 12x - 7

Answer:

3x² - 12x - 7

Step-by-step explanation:

Answer:

Weekend is the best answer

Answer: weekend best answer

Step-by-step explanation:

The least number of pieces that she needs to tie together to make a length of at least 12 yards long is 8 pieces.

Staci has 13 pieces of rope, each piece is 5 feet long. Therefore, the  least number of pieces that she needs to tie together to make a length that is at least 12 yards long can be calculated as follows:

Therefore,

1 piece = 5 feet

13 piece = ?

Therefore,

13 piece = 65 feet

Hence,

1 yard = 3 feet

12 yards = ?

cross multiply

number of feet = 36 feet

Number of pieces to get at least 12 yards(36 feet) = 36 / 5

Number of pieces to get at least 12 yards = 8 pieces

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The equation would be -x+10.2-\(\frac{1}{2}\)x+y

The equation contains:

-decimals

-variables

-negatives

-fractions

-like-terms

Answer:

The algebraic expression has one constant, 10.2, which is a number by itself. The variables, which are letters that stand for unknown values, are x and y. The coefficients, which are numbers that are multiplied to the variables, are

-1, -1/2, and 1. The terms that have an x are like terms.

Step-by-step explanation:

The equation y = 3x +a / 2x - 5 can be expressed in terms of a and y as x = (a - 5y) / (2y-3)

Given equation y = 3x + a / 2x - 5

= y(2x - 5) = 3x + a

= 2xy - 5y = 3x + a

= 2xy - 3x = a - 5y

= x(2y-3) = a - 5y

Hence, x = (a - 5y) / (2y - 3)

First, we will move the denominator 2x-5 and multiply it by y giving us 2xy-5y. Next, we will move all the terms which contain only a and y to one side and the rest remaining to another side, giving us 2xy - 3x = a - 5y. Since we need to express the equation in terms of x we take it as common from left-hand side of the equation and the remaining part we move to the right-hand side as the denominator. Hence we get our equation in terms of a and y as x = (a - 5y) / (2y - 3).

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Answer:

The next day they will both run on the path is July 27th.

We can find this by making columns writing every date and seeing when they intersect.

4                    5

8                   10

12                  15

16                 20

20

We can then add this to the current date to find the date they will next run together.

Step-by-step explanation:

hope this helps. . . <3

good luck!      UwU

The accurate way to describe a vector field F on R3 is (c) A function F from R3 to R3.

Vector field is a set of vectors that exist at different points of a vector space. A vector field is denoted by F. The vector field of a vector function F in R3 is a vector field.

A vector field F can be defined as a function from R3 to R3 (choice (c)) where F(x, y, z) = ⟨f1(x, y, z), f2(x, y, z), f3(x, y, z)⟩ is a vector at each point (x, y, z) of the space in R3.If f(x, y) is a scalar function of two variables, the accurate choice is (b) Vf(x, y) is a vector field on R2. A vector field of a vector function F in R2 is a vector field.

The vector field F can be defined as a function from R2 to R2 where F(x, y) = ⟨f1(x, y), f2(x, y)⟩ is a vector at each point (x, y) of the plane in R2.

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The probability that a randomly selected woman will be 60 inches or less is approximately 0.0139, or 1.39%.

To find the probability that a randomly selected woman will be 60 inches or less, we need to calculate the area under the normal distribution curve up to 60 inches.

First, we need to standardize the height using the z-score formula:

z = (x - μ) / σ

where:

x = 60 inches (the value we want to find the probability for)

μ = mean height = 65.5 inches

σ = standard deviation = 2.5 inches

Substituting the values into the formula, we get:

z = (60 - 65.5) / 2.5

z = -2.2

Next, we need to find the cumulative probability up to the z-score of -2.2. We can look up this value in the standard normal distribution table or use statistical software.

Using a standard normal distribution table, we find that the cumulative probability corresponding to a z-score of -2.2 is approximately 0.0139.

Therefore, the probability that a randomly selected woman will be 60 inches or less is approximately 0.0139, or 1.39%.

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The thickness of the clay layer, which drains only from the upper surface, can be determined based on the consolidation settlement observations. With 50% of consolidation settlement occurring in 1 hour for a 25 mm thick specimen, and a total primary consolidation settlement of 35 mm occurring over many years, the thickness of the clay layer is approximately 87.5 mm.

The consolidation settlement of a clay specimen can be used to estimate the thickness of a clay layer that drains only from the upper surface. In this case, the observed settlement data provides valuable information.

Firstly, we know that 50% of the consolidation settlement occurs in 1 hour for a 25 mm thick clay specimen. This is an important parameter for calculating the coefficient of consolidation (Cv) using Terzaghi's theory. From the Cv value, we can estimate the time required for full consolidation settlement.

Secondly, we are given that the same clay settles 10 mm over 10 years and eventually settles a total of 35 mm over a longer period. This long-term settlement is known as the total primary consolidation settlement. By comparing this settlement value with the settlement data from the oedometer test, we can determine the thickness of the clay layer.

To calculate the thickness, we can use the concept of the consolidation settlement ratio. The ratio of the total primary consolidation settlement to the consolidation settlement at 50% completion is equal to the ratio of the total thickness to the thickness at 50% completion. Applying this ratio, we can determine that the thickness of the clay layer, which drains only from the upper surface, is approximately 87.5 mm.

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Explanation:

The notation \(a_1 = 10\) says that the first term is 10.

The notation \(a_n = a_{n-1}+3\) is the recursive rule that says "to find the nth term, we add 3 to the previous term". So we add 3 to each term to get the next one.

This sequence is arithmetic due to the common difference d = 3.

Answer:

Step-by-step explanation:

a1=10

a_{n}=a_{n-1}+3

n=2

\(a_{2}=a_{1}+3=10+3=13\\n=3\\a_{3}=a_{2}+3=13+3=16\\n=4\\a_{4}=a_{3}+3=16+3=19\\first~four~terms~are\\10,13,16,19\)

To find the value of the function f(x) = \(2x^3 - 5x + 7\) at x = -4, we substitute -4 into the function and simplify. The value of the function at

x = -4 is -101.

To calculate the value of the function \(f(x) = 2x^3 - 5x + 7\)at x = -4, we substitute -4 for x in the equation:

\(f(-4) = 2(-4)^3 - 5(-4) + 7\)

Simplifying the expression, we have:

f(-4) = 2(-64) + 20 + 7

f(-4) = -128 + 20 + 7

f(-4) = -101

Therefore, when x = -4, the value of the function \(f(x) = 2x^3 - 5x + 7\)is -101. This means that if we substitute -4 into the function, we get a result of -101.

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Answer:

C. x2+x-2

Step-by-step explanation:

Answer:

The equation has no solution. It has no roots. Therefore the second option no roots is correct.

Step-by-step explanation:

Suppose there is a real number y that satisfies the equation.

Squaring both sides, we get:

2y-5 = 2y+6

Subtracting 2y from both the sides, we get:

-5=6

-5 can't be equal to 6, this is a contradiction.

Therefore, there is no real number y that satisfies the equation. Hence there are no roots for this equation.

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200 is the mean absolute deviation. Therefore, choice three (200) is the right one.

The absolute difference between the predicted and actual values must be determined, added together, and divided by the total number of periods.

Forecasted values are as follows: 1,500 and 1,400

Values in actuality: 1,200 and 1,500

Absolute differences:

|1,500 - 1,200| = 300

|1,400 - 1,500| = 100

Now, we calculate the MAD:

MAD = (300 + 100) / 2 = 400 / 2 = 200

Therefore, 200 is the mean absolute deviation. Therefore, choice three (200) is the right one.

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In general, different refrigerants should not be mixed or recovered into the same cylinder.

Different refrigerants have unique chemical compositions and properties that make them incompatible with one another. Mixing different refrigerants can lead to unpredictable reactions, loss of refrigerant performance, and potential safety hazards. Therefore, it is generally recommended to avoid recovering different refrigerants into the same cylinder.

When recovering refrigerants, it is important to use separate recovery cylinders or tanks for each specific refrigerant type. This ensures that the refrigerants can be properly identified, stored, and recycled or disposed of in accordance with regulations and environmental guidelines.

The refrigerant recovery process involves capturing and removing refrigerant from a system, storing it temporarily in dedicated containers, and then transferring it to a proper recovery or recycling facility. Proper identification and segregation of refrigerants during the recovery process help maintain the integrity of each refrigerant type and prevent contamination or cross-contamination.

To maintain the integrity and safety of different refrigerants, it is best practice to recover each refrigerant into separate cylinders. Mixing different refrigerants in the same cylinder can lead to complications and should be avoided. Following proper refrigerant recovery procedures and guidelines helps ensure the efficient and environmentally responsible management of refrigerants.

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The number of different refrigerants that may be recovered into the same cylinder is zero.

When it comes to refrigerants, it is important to understand that different refrigerants should not be mixed together. Each refrigerant has its own unique properties and should be handled and stored separately. mixing refrigerants can lead to chemical reactions and potential safety hazards.

The recovery process involves removing refrigerants from a system and storing them in a cylinder for proper disposal or reuse. During the recovery process, it is crucial to ensure that only one type of refrigerant is being recovered into a cylinder to avoid contamination or mixing.

Therefore, the number of different refrigerants that may be recovered into the same cylinder is zero. It is essential to keep different refrigerants separate to maintain their integrity and prevent any adverse reactions.

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Answer:

x =6    y = 5

Step-by-step explanation:

3y = 15

3/3     15/3

y= 5

-2x + 6(5) = 18

-2x + 30 = 18

        -30    -30

-2x = -12

-2/-2    -12/-2

x = 6

Answer:

360 nickles

Step-by-step explanation:

you had the equation in front of you so just dived those numbers and 360 should be your answers and to check it multiply 360 by 0.05

Answer:

The maximum pizza quantity would be with the pizza of 18 inch

Step-by-step explanation:

The size of the pizza in inches depicts its diameter.

Thus, 12 inch pizza means diameter of the pizza = 12 inch and 18 inch pizza means diameter = 18 inch

In case of either the CURCUMFERENCE OR AREA, the pizza with larger diameter will have larger CURCUMFERENCE and AREA as compared to the pizza with smaller diameter.

For instance

Area of 18 inch pizza

\(\pi * (18/2)^2\\= 254.34\)Square inch

Area of 12 inch pizza

\(\pi * (12/2)^2\\= 113.04\)Square inch

Circumference of 18 inch pizza

\(2*3.14*9 = 56.52\)

Circumference of 12 inch pizza

\(2*3.14*6 = 37.68\)

Answer:

A ) $1.75 x  ≤ $25

Step-by-step explanation:

the cost of x boxes of crayons = 1.75x dollars

If there is a budget of only $ 25,

So, the cost of x boxes of crayons ≤ $25

Answer:

Since his budget is 25, it's less than or equal to ( ≤ 25). That means your answer would be A  $1.75x ≤ $25 because 1.75 times the amount of crayons can't go over the $25 budget.

Step-by-step explanation:

Aight, so the same intercept

\( - 2y = - 4 - x = = = > \\ y = \frac{1}{2} x + 2\)

m=½

\(y = \frac{1}{2} x + b = = = > \\ now \: let \: us \: replace \: the \: point \\ 1 = \frac{1}{2} ( - 3) + b = = = > \\ \frac{5}{2} = b\)

soooo

\(y = \frac{1}{2} x + \frac{5}{2} \)

The number 55 represents the speed of the car in miles per hour.

In the expression 245 - 55T, the number 55 represents the speed of the car in miles per hour.

To see why, consider the formula for distance, which is:

distance = speed x time

In this case, the distance is given by 245 - 55T, where T is the time in hours that the family has been driving. We can rearrange this formula to get:

speed = distance / time

Substituting the expression for distance, we get:

speed = (245 - 55T) / T

Simplifying this expression, we get:

speed = 245/T - 55

This shows that the speed of the car is given by 245 divided by the time in hours plus a constant of -55. Therefore, the number 55 represents the speed of the car in miles per hour.

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Answer:

285.214 cubic meters

Step-by-step explanation:

So I use this equation V=πr2h

All because this equation have a radius and so I put it in this form

V= π5.5^2 x 3

V=285

(I hope this help and if it’s wrong I am truly sorry)

The required volume of the given cylinder is 285.214 cubic meters. Option A is correct.

For a cylinder,
Height  = 3m
Radius = 5.5m
Volume = ?

Volume is defined as the ratio of the mass of an object to its density.

Here,
The volume of the cylinder is given as,
Volume = πr²h
Substitute the value in the equation,
Volume = 3.14×5.5²×3
volume = 285.214 cubic meters.

Thus, the required volume of the given cylinder is 285.214 cubic meters. Option A is correct.

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