PLS HELP ME I'M SO CONFUSED!!!!!!

Answer:

36 m 32 s

Step-by-step explanation:

67 /110 = 0.609 hour

0.609 × 60 minutes = 36.54 minutes

36 minutes + 0.54×60 second

= 36 minutes 32 seconds

Answer:

36 mins 32 secs

Step-by-step explanation:

Part (c) is the correct option i.e. The total dealer's cost is $16588.36.

What is Percentage ?

Percentage, which is a relative figure used to denote hundredths of any quantity. Since one percent (symbolised as 1%) is equal to one hundredth of something, 100 percent stands for everything, and 200 percent refers to twice the amount specified.

Given, Cost paid for car's options = 82 % $3,098 = $2540.36

           Cost paid for base price = 85 % $15,480 = $13158.

           Destination charge = $890

∴ The total dealer's cost will be :

 = Cost paid for car's options +  Cost paid for base price +  Destination charge

=  $2540.36 + $13158 + $890

= $16588.36.

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Answer:

the answer is 1/50

Step-by-step explanation:

A random number generator is used to select an integer from 1 to 50. Since random number generator generates any number randomly, all the numbers from 1 to 50

The output of this code will be a signal that starts at zero and gradually increases to three. After five seconds, the signal starts decreasing to zero, with an exponential decay rate. The output plot will look like a ramp that rises linearly and falls exponentially after five seconds.

The term "son of a mention" is not familiar in mathematics. The correct term might be "son of a gun" or "son of a function."A differential equation used to model your specific engineering course is called an engineering differential equation. Such equations are used to predict, control, and monitor various physical processes, ranging from the dynamics of mechanical systems to the motion of fluids and gases, and electrical and electronic circuits. It's essential to know the form of the differential equations, the initial and boundary conditions, and the physical meaning of the parameters to use them effectively in modeling physical systems.

The following MATLAB code represents a simple for loop with a nested if-else statement and a plotting command. The code generates a signal with two segments: a rising ramp from zero to three and a falling ramp from three to zero. The signal has a total duration of 10 seconds, a sampling interval of 0.05 seconds, and a plotting delay of 0.002 seconds.

01 t=0 02 while t<10 03

if

(t<5) 04 y=3*(1-exp(-t)); 05 else if

(t>=5) 06 y=3*exp(-t+5); 07 ends 08 end 09

t = t + 0.05 10 pauses (0.002)

The output of this code will be a signal that starts at zero and gradually increases to three. After five seconds, the signal starts decreasing to zero, with an exponential decay rate. The output plot will look like a ramp that rises linearly and falls exponentially after five seconds.

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Answer:

r² = (9 - 4)² + (6 - 4)² = 5² + 2² = 25 + 4 = 29

So the equation of this circle is

(x - 4)² + (y - 4)² = 29

Answer:

3  and 1/3

Step-by-step explanation:

It is 3 and 1/3 because there are 3 fully shaded circles (3) then one of the three parts for one circle (1/3)

If it was wrong there is something wrong with the test lol.

The response variable in this experiment is the scores on the midterm exam. The response variable is the one that is measured or observed to determine whether it has been affected by the explanatory variable.

The alphabetic character that expresses a numerical value or a number is known as a variable in mathematics. A variable is used to represent an unknown quantity in algebraic equations.

The explanatory variable in this experiment is the type of music played in the background during the exam. The explanatory variable is the one that is deliberately manipulated or changed by the researcher in order to observe its effect on the response variable. In this case, the researcher wanted to investigate whether the type of music played during the exam would have an effect on the students' performance, so they manipulated the type of music and observed its effect on the exam scores.

The response variable in this experiment is the scores on the midterm exam. The response variable is the one that is measured or observed to determine whether it has been affected by the explanatory variable. In this case, the researcher measured the exam scores of the two groups to see if there was a difference between the group that listened to Dave Matthews Band and the group that listened to Death Cab for Cutie.

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The equation that could represent a linear combination of the system 2/3x + 5/2y = 15 and 4x + 15y = 12 is 0 = 26

Linear equations are equations that have constant average rates of change, slope or gradient

A system of linear equations is a collection of at least two linear equations.

In this case, the system of equations is given as

2/3x + 5/2y = 15

4x + 15y = 12

Multiply the first equation by 6, to eliminate the fractions.

6 * (2/3x + 5/2y = 15)

This gives

4x + 15y = 90

Subtract the equation 4x + 15y = 90 from 4x + 15y = 12

4x - 4x + 15y - 15y = 12 - 90

Evaluate the difference

0 + 0 = -78

Evaluate the sum

0 = -78

The above equation is the same equation as option (b) 0 = 26

This is so because they both represent that the system of equations have no solution

Hence, the equation that could represent a linear combination of the system is 0 = 26

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Complete question

The system of equations below has no solution.

2/3x + 5/2y = 15

4x + 15y = 12

Which equation could represent a linear combination of the system?

Solutions for the system of equations  2x −5y =1  , 4x −10y =3 has no solution as ( 2 /4 ) = (-5/-10) ≠ (1/3) .

Simplify the system of equations to get the solution of the system :

2x - 5y = 1

⇒ 2x = 1 + 5y

⇒ x = ( 1+ 5y ) / 2  __(1)

4x -10y = 3

⇒ 2 ( 2x - 5y ) = 3

⇒2x - 5y = 3/2  ___(2)

Standard form of the system of equations are :

a₁x + b₁y + c₁ = 0

a₂x + b₂y + c₂ = 0

Substitute the value of x from (1) into (2) we get,

2 ( 1 + 5y )/2  - 5y = 3/2

⇒1 + 5y -5y = 3/2

⇒1 = 3/2

⇒2 = 3 which is not true.

System of the equation has no solution.

Here, ( a₁ /a₂ ) = (b₁ /b₂) ≠ (c₁ /c₂ ) that is ( 2 /4 ) = (-5/-10) ≠ (1/3) .

Therefore, the system of equations has no solution.

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a) Number of elements in sample size is 11.

b) Probability P(E) is 0.45.

a) The sample space is the set of all possible outcomes when drawing a single card from the deck. Since there are 11 cards in total, the sample space has 11 elements.

b) We want to find the probability of drawing an even-numbered card, which includes the red cards numbered 2, 4, and 6, and the black cards numbered 2 and 4. There are five such cards in total, so the probability of drawing an even-numbered card is:

P(E) = number of even-numbered cards / total number of cards

P(E) = 5 / 11

P(E) = 0.4545 or approximately 0.45

Therefore, the probability of drawing an even-numbered card from the deck is about 0.45.

Correct Question:

A special deck of cards has 6 red cards, and 5 black cards. The red cards are numbered 1, 2, 3, 4, 5, and 6. The black cards are numbered 1, 2, 3, 4 and 5. The cards are well shuffled and you randomly draw one card.

R = card drawn is Red

E = card drawn is even-numbered

a) How many elements are there in the sample space.

b) What is the probability P(E).

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This alternative hypothesis is either greater than or less than 0.87, but not exactly equal to it.

The alternative hypothesis (H1) is the hypothesis that is tested when the null hypothesis (H0) is rejected.

The null hypothesis is that the population proportion using the new drug that have a quick recovery is 0.87.

The alternative hypothesis would be that the population proportion using the new drug that have a quick recovery is different from 0.87.

This can be expressed as:

H1: p ≠ 0.87

The alternative hypothesis in this scenario would be that the new drug being tested is effective in increasing the chance of a quick recovery in people who have come down with the flu in the past week.

The alternative hypothesis would state that the population proportion of those who use the new drug and experience a quick recovery is greater than 0.87.
The alternative hypothesis is necessary because it allows us to determine whether the results of the study are statistically significant.

If the null hypothesis is accepted, it means that there is no significant difference between the rate of quick recovery with or without the new drug.

The alternative hypothesis is accepted, it means that the new drug has a significant effect on increasing the rate of quick recovery.
To test this hypothesis, a statistical analysis will need to be performed using the data collected from the study.

This analysis will allow us to determine whether the results are statistically significant and whether we can reject the null hypothesis in favor of the alternative hypothesis.

Ultimately, this will provide valuable information on the effectiveness of the new drug and whether it should be recommended for use in treating the flu.

The "≠" symbol means "not equal to".

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Answer:

For a polynomial of the form ax2+bx+c a x 2 + b x + c , rewrite the middle term as a sum of two terms whose product is a⋅c=4⋅−25=−100 a ⋅ c = 4 ⋅ - 25 ...

Step-by-step explanation:

Answer:

La altura de la catedral es de 15119,97 m.

Step-by-step explanation:

Para una respuesta única, la pregunta se formula de la siguiente manera:

Una catedral se encuentra en la cima de una colina. Cuando se ve la parte superior de su torre desde la parte inferior de la colina, el ángulo de elevación es de 48 °. Cuando se ve desde un punto a 6096 m del pie del promontorio, el ángulo de elevación es de 41 °, la pendiente de la colina forma un ángulo de 32 ° Se aproxima a la altura de la catedral

Deje que la base de la colina = C

El punto 6096 m de la base = A

La cima de la catedral = B

∴ ∠A = 41 °

∠C = 180-48 = 132 °

∠B = 180 - (41 + 132) = 7 °

\(\dfrac{6096}{sin7} = \dfrac{CB}{sin41}\)

∴ CB = 32816.59 m.

Punto E = Base de la catedral.

Punto D = Punto debajo de la base de la catedral al nivel del pie de la colina

Por lo tanto, la altura de la catedral = BE

 ∡ABE = 90-41 = 49 °

∡CED = 90-32 = 58 °

∴ ∡CEB = 180 - 58 ° = 122 °

De la regla seno tenemos;

\(\dfrac{CB}{sin(\angle CEB)} = \dfrac{BE}{sin(\angle ECB)}\)

∠EBA = 90 - 48 = 42°

∠EBC = 42 - 7 = 35°

∠ECB = 180 - 35 - 122 = 23°

\(\therefore \dfrac{32816.59 }{sin(122)} = \dfrac{BE}{sin(23)}\)

\(BE = \dfrac{32816.59 }{sin(122)} \times sin(23) = 15119.97 \ m\)

La altura de la catedral = 15119,97 m.

Answer:

2+b<18

Step-by-step explanation:

(a) The probability that a randomly selected customer spends less than 65 minutes at the gym is 0.4013. (b) The expected value and standard deviation (standard error) of the sample mean of the time spent at the gym is 2.857 minutes

a) The probability that a randomly selected customer spends less than 65 minutes at the gym is calculated using the standard normal distribution formula.

z = (x - μ) / σ

where,μ = 70 minutes, σ = 20 minutes, x = 65 minutes

Substituting the given values, we get

z = (65 - 70) / 20

z = -0.25

Using a standard normal table or calculator, the probability that a randomly selected customer spends less than 65 minutes at the gym is 0.4013.

b) The standard deviation (standard error) of the sample mean can be calculated using the formula:

SE = σ/√n

where,σ = 20 minutes, n = 49

Substituting the given values, we get

SE = 20/√49

SE = 2.857 minutes

Therefore, the expected value and standard deviation (standard error) of the sample mean of the time spent at the gym is 2.857 minutes, respectively.

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Answer:3x4=x

Step-by-step explanation:

Some alkenes have geometric cis-trans isomers because of the presence of a double bond between two carbon atoms. In a carbon-carbon double bond, the carbon atoms are connected to two different groups of atoms, which can be oriented differently in space. In the cis configuration, the two substituent groups on each carbon atom are on the same side of the double bond, while in the trans configuration, the two substituent groups on each carbon atom are on opposite sides of the double bond.

The cis-trans isomerism arises due to the restricted rotation around the carbon-carbon double bond. In the case of cis isomers, the substituent groups are too bulky to rotate around the double bond, and they remain on the same side of the double bond. In contrast, in the trans isomers, the substituent groups are oriented on opposite sides of the double bond, which allows them to rotate freely around the bond.

The presence of cis-trans isomers has important consequences for the physical and chemical properties of alkenes, including their reactivity, solubility, and melting points. The two isomers can have different properties and can exhibit different biological activities, making them important targets for drug design and synthesis.

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There were 13.9 chocolate chips on average in each cookie, with a standard deviation of 2.9. Based on this sample, it is estimated that there are between 13.3 and 14.5 chocolate chips per cookie within the 80% confidence interval.

To calculate the 80% confidence interval for the number of chocolate chips per cookie, we can use the formula:

Confidence Interval = Mean ± (Z * (Standard Deviation / √( SampleSize))) First, we need to find the critical value (Z) for an 80% confidence level.

The Z-value corresponds to the desired confidence level and can be obtained from a standard normal distribution table or calculated using a statistical software. For an 80% confidence level, the Z-value is approximately 1.282.

Confidence Interval = 13.9 ± (1.282 * (2.9 / √43))

Calculating the expression inside the parentheses:

Confidence Interval = 13.9 ± (1.282 * 0.442)

Calculating the final confidence interval:

Confidence Interval ≈ 13.9 ± 0.567

Therefore, the 80% confidence interval for the number of chocolate chips per cookie for big chip cookies is approximately (13.3, 14.5).

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Answer:

The population of town A is greater than B. Town A is 206 times greater than town B.

Step-by-step explanation:

Population of town B is 0.505 times greater than the population of town B.

The population of Town A is:

= 4 x 104

= 416 people

The population of Town B is:

= 2 x 105

= 210 people

In relation to town A, the population of town B is:

= Town B population / Town A population

= 210 / 416

= 0.505 times greater

In conclusion, the population of town A is more than that of town B so town B is only 0.505 times greater than town A to show that it is smaller than town A.

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The equation of the lime in R^2 through distinct points (x1,x2) and (x2,y2) can be written as det as 0

Let (x1,y1) and (x2,y2) be two distinct points in R^2.

The equation of a line passing through two points in the plane can be written in the form y = mx + b, where m is the slope of the line and b is the y-intercept.

We can find the slope of the line by:

m = (y2 - y1)/(x2 - x1)

We can rewrite this equation in the form:

y - y1 = m(x - x1)

Expanding this equation, we get:

y - y1 = (y2 - y1)/(x2 - x1) (x - x1)

Multiplying both sides by (x2 - x1), we get:

(x2 - x1)(y - y1) = (y2 - y1)(x - x1)

Simplifying, we get:

x(y2 - y1) - y(x2 - x1) + x2y1 - x1y2 = 0

This equation can be written as:

\begin{vmatrix}

1 & x & y\

1 & x1 & y1\

1 & x2 & y2

\end{vmatrix} = 0

which is the same as the determinant expression given in the problem statement.

Therefore, we have shown that the equation of the line passing through two distinct points (x1,y1) and (x2,y2) can be written as det = 0.

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Answer:

9h

Step-by-step explanation:

Given data

Sofia earns $9 per hour mowing lawns

Let the total amount earned be t

and let the time worked be h

Hence

t= 9*h

t= 9h

The expression is 9h

Answer: m = -1

Step-by-step explanation:

m = slope

The slope is 1/-1 which is just -1.

Hope this helps!

Answer:

10.5

Step-by-step explanation:

The length of the segment HD will be 5.5.

One of the first areas of mathematics is geometry, along with arithmetic. It is concerned with spatial characteristics like the separation, shape, size, and relative placement of objects.

Given that triangle, F E D is cut by line segment H G. Line segment H G goes from side F D to side E D. The length of E G is 6 and the length of F H is 8.

The length of the segment HD will be calculated as,

EG / GD = FH / HD

4 / 11 = 2 / HD

HD = 22 / 4

HD = 5.5

The missing image is attached with the answer below.

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Answer:208

Step-by-step explanation:

Answer:

1. A

2. B

3. D

The square root of 28 is equivalent to 2 x the square root of 7

the square root of 252 is equivalent to 6 x the square root of 7

the square root of 36 is 6

Answer:

The answer is 0 X=1

1. x10-1

(1)10-1

1-1

=0

2. x11-1

(1)11-1

1-1

=0

Step-by-step explanation:

Answer-

B) Plane and line

The pair which is undefined terms are used to define the term parallel lines is B. plane and line

Parallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect.

Properties of Parallel Lines

Corresponding angles are equal. Vertical angles/ Vertically opposite angles are equal. Alternate interior angles are equal. Alternate exterior angles are equal.

My dog not only likes to play fetch but also chase cars. Parallel: My dog not only likes to play fetch, but he also likes to chase cars. My dog likes not only to play fetch but also to chase cars. When you connect two clauses or phrases with a word of comparison, such as than or as, use parallel structure.

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The number of required tiles including the breakage and cut-offs are 37.

Firstly we will calculate the number of required tiles based on below mentioned formula-

Number of tiles required to cover the floor = Area covered by one tile × Total area to be tiled

Number of required tiles = 33.984

Rounding off the number

Number of required tiles = 34

Number of extra tiles required for breakage and cut-offs = 34 + 10% × 34

Number of extra tiles = 34 + 10/100×34

Performing multiplication, division, addition along with cancelling common zeroes of the number

Number of extra tiles = 34 + 3.4

Adding the values

Number of extra tiles = 37.4

Again rounding off the number

Number of extra tiles = 37

Hence, the total required number of tiles are 37 according to stated percentage of waste.

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The new value of the sample mean is approximately 16. The mean of the combined samples is 8.

To find the new value of the sample mean after removing a score, we need to calculate the mean of the remaining scores.

Given that the original sample had n = 8 scores with a mean of M = 14, we can calculate the sum of the scores (ΣX) using the formula ΣX = M * n.

ΣX = 14 * 8 = 112

Since one person with a score of 0 is removed, we subtract this score from the sum of the scores:

New ΣX = ΣX - 0 = 112 - 0 = 112

Now, we need to calculate the new sample mean by dividing the new sum of the scores by the new sample size (n - 1).

New Mean = New ΣX / (n - 1) = 112 / (8 - 1) = 112 / 7 ≈ 16

Therefore, the new value of the sample mean is approximately 16.

For the second question regarding the mean of the combined samples, we can find the overall mean by calculating the weighted average of the individual means, weighted by their respective sample sizes.

Given that the first sample has n1 = 4 scores with a mean of M1 = 7, and the second sample has n2 = 4 scores with a mean of M2 = 9, the overall mean (M_combined) can be calculated as:

M_combined = (n1 * M1 + n2 * M2) / (n1 + n2)

= (4 * 7 + 4 * 9) / (4 + 4)

= (28 + 36) / 8

= 64 / 8

= 8

Therefore, the mean of the combined samples is 8.

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