Alessa had 50 in her account. she then received four $-25 charges to her account. what is the new balance of her account?

Hey there! :)

Answer:

16 minutes.

Step-by-step explanation:

Create an equation in the form y = mx + b to solve this problem. Begin by solving for the rate of change of the table using the slope formula:

\(m = \frac{\text{rise}}{\text{run}} = \frac{y_2 - y_1}{x_2 - x_1}\)

Plug in values from the table into the equation:

\(m = \frac{64 - 40}{9 - 5}\)

Simplify:

\(m = \frac{24}{4}\)

m = 6.

Plug in the slope and a point from the table into the equation

y = mx + b

40 = 6(5) + b

40 = 30 + b

40 - 30 = b

b = 10.

Rewrite the equation:

y = 6x + 10

To solve for how long it took her to ride 1 km, plug 1 into the equation:

y = 6(1) + 10

y = 6 + 10

y = 16 minutes.

fig 3 would take 18 triangle

fig 4 would take 30 small triangles

if its wrong i am sorry

Answer:

Answer:

The graph shows a steady declining plot as the aveage traffic volume increases. Since y axis is speed the correct answer is that as traffic volume increases the average vehicle speed decreases.

Step-by-step explanation:

The confidence interval for the given numbers, with a sample proportion of 0.88 and a confidence level of 0.94, is approximately (0.798, 0.962) when rounded to two decimal places.

To calculate the confidence interval for a random sample with a sample proportion of 0.88 and a confidence level of 0.94, we can use the formula:

\[ \text{Confidence Interval} = \text{Sample Proportion} \pm \text{Margin of Error} \]

The margin of error can be calculated using the formula:

\[ \text{Margin of Error} = \text{Critical Value} \times \text{Standard Error} \]

The critical value can be obtained from the Z-table or calculated using the inverse cumulative distribution function for the standard normal distribution.

Since the level of difficulty is set to 2, we can assume a two-tailed test. The critical value for a 94% confidence level with a two-tailed test is approximately 1.99.

The standard error can be calculated using the formula:

\[ \text{Standard Error} = \sqrt{\frac{\text{Sample Proportion} \times (1 - \text{Sample Proportion})}{\text{Sample Size}}} \]

Plugging in the values:

Sample Proportion (\( p \)): 0.88

Sample Size (\( n \)): 53

Confidence Level: 0.94

Critical Value (\( z \)): 1.99

We can calculate the standard error:

\[ \text{Standard Error} = \sqrt{\frac{0.88 \times (1 - 0.88)}{53}} \]

Now, we can calculate the margin of error:

\[ \text{Margin of Error} = 1.99 \times \text{Standard Error} \]

Finally, we can calculate the confidence interval:

\[ \text{Confidence Interval} = 0.88 \pm \text{Margin of Error} \]

Calculating the values:

Standard Error ≈ 0.041

Margin of Error ≈ 0.082

Confidence Interval ≈ (0.798, 0.962)

Therefore, the confidence interval for the given numbers, with a sample proportion of 0.88 and a confidence level of 0.94, is approximately (0.798, 0.962) when rounded to two decimal places.

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Answer:

Step-by-step explanation:

1.5 feet                   x

======        =     ======  

250 miles           450

Multiply both sides by 450

1.5 * 450                  x

======        =      

250 miles          

x = 2.7 feet

1 foot = 12 inches

0.7 foot = x

x = 12 * 0.7

x = 8.4 inches

Answer

Either 2.7 feet

or 2 feet 8 inches.

The sequence is a progression of fractions reducing to whole numbers.

A progression of fractions is a sequence of fractions where each fraction is related to the previous one in a specific way. The relationship can be determined by the numerators, denominators, or both.

For example, in a progression of fractions where each fraction is obtained by dividing the previous fraction's denominator by its numerator, the fractions form a sequence that moves towards a whole number. Another example of a progression of fractions could be where each fraction has a numerator that is the sum of the numerators of the previous two fractions, and a denominator that is the sum of the denominators of the previous two fractions. This would form a sequence of fractions that is called a "Fibonacci sequence of fractions."

Each fraction is being divided by the same number, which is the denominator of the previous fraction in the sequence. In other words, each fraction is being divided by its own denominator, which is becoming the numerator in the next fraction.

So, the sequence can be represented as:

3/49 -> 3/7 -> 3 -> 21.

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The complete question goes thus;

Identify the sequence of 3/49,3/7,3,21

Answer:

A progression of fractions is a sequence of fractions where each fraction is related to the previous one in a specific way. The relationship can be determined by the numerators, denominators, or both.

Step-by-step explanation:

will you date me ecolwell

Answer:

  14

Step-by-step explanation:

First, you evaluate the absolute value expressions. The absolute value function changes the sign of its argument to positive, if it is not already.

  -3(2) +4(5)

Then perform the multiplication.

  -6 +20

Finally, do the addition.

  14

The argument presented is an example of a fallacy known as affirming the consequent, which incorrectly assumes that if the consequent of a conditional statement is true, then the antecedent must also be true. It fails to consider other possibilities and overlooks the fact that not all square shapes are cubes.

The argument presented is an example of a fallacy known as affirming the consequent, which is a formal logical fallacy. This fallacy occurs when one assumes that if the consequent (the "then" part) of a conditional statement is true, then the antecedent (the "if" part) must also be true.

In this case, the argument incorrectly assumes that because all cubes are square (if cube, then square) and a dice is a cube, then the dice must be square. However, this reasoning is flawed. While it is true that all cubes are square, not all square shapes are cubes. Therefore, even though a dice is a cube, it does not necessarily mean that it must be square.

The argument fails to consider other possibilities, such as the fact that cubes can have other shapes besides squares, like rectangular cubes. This logical error highlights the importance of careful reasoning and avoiding fallacies when making arguments.

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Step-by-step explanation:

\( \sf{ \longmapsto \: D.f(t)=20,000(1.08)t}\)

Answers:

Note: your teacher may want you to type in a positive value for r

=========================================================

Explanation:

The given equation y = 8(1-0.15)^t is in the form y = a(1+r)^t

We have a = 8 as the initial value, or what we start with.

r = -0.15 converts to -15%, so we have a decay of 15%

Plug in t = 3 to find the corresponding value of y

y = 8(1-0.15)^t

y = 8(1-0.15)^3

y = 8(0.85)^3

y = 8(0.614125)

y = 4.913

y = 4.9

Answer:

a = 8

r = 85%

y = 4.913

Step-by-step explanation:

For a, the exponential decay function is y=a*r^t. In order to find the initial amount, you are solving for when t = 0 or, y(0). Thus, t, or time, is 0. Solve the equation with time of 0.

y = 8(1-0.15)^0 = 8*1 (anything to the 0 power equals 1)

a = 8 is the initial amount

In order to solve for r, you need to solve (1 - 0.15) = 0.85. Now, multiply by 100 to get the percent 100 * 0.85 = 85%

Lastly, when t = 3 solve the equation filling in the exponent, t with 3 like below:

y = 8(1-0.15)^3 (PEMDAS; parenthesis and exponents first)

y = 8(0.85)^3 = 8*(0.614125)

y = 4.913

A dance portfolio for precaliberence in dance should feature a comprehensive resume, videos of performances, photographs, and any relevant awards or certifications. This combination of elements provides a well-rounded representation of a dancer's skills, accomplishments, and potential.

A dance portfolio is a collection of works that showcases an individual's skills, creativity, and versatility in the field of dance. It is a comprehensive representation of their training, experiences, and accomplishments. As a dancer, my portfolio would include various elements that highlight my precaliberence in dance.

Firstly, I would include a detailed resume outlining my dance education, including the styles I have studied, the instructors I have trained under, and any notable performances or competitions I have participated in. This provides a snapshot of my training and experience.

Next, I would include a compilation of videos showcasing my dance performances. These videos would demonstrate my technical proficiency, artistry, and ability to interpret different styles of dance. They may include solo performances, duets, or group routines, allowing the viewer to witness my versatility and adaptability as a dancer.

Additionally, I would include high-quality photographs capturing dynamic moments from my performances. These images would convey the emotions and expressions that I bring to my dance, as well as demonstrate my stage presence and physicality.

Lastly, I would incorporate any awards, scholarships, or certifications I have received throughout my dance journey. These achievements serve as evidence of my dedication, commitment, and recognition within the dance community.

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Answer:

25 girls and 50 boys

Step-by-step explanation:

let x be the number of boys

let x/2 be the number of girls

x + x/2 = 75

3x/2 = 75

3x = 150

x = 50

there are 50 boys and 50/2 = 25 girls.

check:

50 + 25 = 75

The length of the sides of the rhombus JKLM is 12 units.

A rhombus is one of parallelograms. The opposite sides of a rhombus are parallel, and the opposite angles are equal. Furthermore, all of the sides of a rhombus are the same length, and the diagonals intersect at right angles.

In the problem, the sides of rhombus JKLM are:

JK = 2x + 4

JM = 3x

Since the length all of the sides of a rhombus are the same, then:

JM = JK

3x = 2x + 4

Substract both sides by 2x:

3x - 2x = 2x + 4 - 2x

x = 4

To find the length of a side, substitute x = 4 into:

JM = 3x

JM = 3(4) = 12

Hence, the length of the sides of the given rhombus is 12.

The picture in your question is missing. Most likely it was like on the attached picture.

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Answer:

12

Step-by-step explanation:

JK = JM

2x + 4 = 3x

x = 4

JK = JM = 3 x 4 = 12

Answer: p=x2−6x+8

Step-by-step explanation:

hope this answer helps

Answer:     x(x-4)(x-2)

Step-by-step explanation:

Answer:

600

Step-by-step explanation:

+2  

2 5

2 4

---------

 First 5 x 4=20 which means add 2 to the equation 2 x 4

Second 4 x 2=8 + 2=10 do first 3 numbers are 100

third we put a 0 below the first 0 on first line.

fourth do 5 x 2=10 so we add 1 to 2 x 2

fifth 2 x 2 + 1= 5

sixth 100 + 500=600 and there's your answer

Hope this helps have a great afternoon:)

The probability of selecting a red marble and then selecting another red marble is: With replacement: 1/16Without replacement: 1/19

a. Compute the probability of selecting a red marble and then selecting another red marble.

Assume that this is done with replacement.

There are 20 marbles in a bag consisting of 8 orange, 3 green, 5 red, and 4 blue balls.

P(red ball) = 5/20 = 1/4P(2 red balls with replacement) = P(red ball) × P(red ball)

= (1/4) × (1/4)

= 1/16b.

Compute the probability of selecting a red marble and then selecting another red marble,

Assume that this is done without replacement.

There are 20 marbles in a bag consisting of 8 orange, 3 green, 5 red, and 4 blue balls.

P(red ball) = 5/20 = 1/4P(2 red balls without replacement)

= P(red ball) × P(red ball after the first red ball is drawn)

= (1/4) × (4/19)

= 4/76

= 1/19

Thus, the probability of selecting a red marble and then selecting another red marble is:With replacement: 1/16Without replacement: 1/19

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When one increases the confidence level (1-α) from 0.90 to 0.95, it means they are becoming more certain about the estimate of the population parameter.

In statistical inference, the confidence level indicates the probability of the true population parameter falling within the confidence interval calculated from the sample data. So, a higher confidence level implies a wider confidence interval.

For example, if a confidence interval for a mean is calculated at the 90% confidence level, then we can say that we are 90% confident that the true population mean falls within the interval. However, if we increase the confidence level to 95%, the interval becomes wider, but we can say that we are now 95% confident that the true population mean falls within this wider interval.

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Answer:

8

Step-by-step explanation:

y-7 when y=15

15-7=8

Answer:

Vertex : (-2,-121)

Roots : x=9,-13

Step-by-step explanation: Rewrite the vertex form and use this form to fine the vertex (h,k).

The roots (zeros) are the x values where the graph intersects the x-axis. To find the roots (zeros), replace y with zero and solve for x.

I hope this helps you out.

Answer:

Step-by-step explanation:

If x varies directly as y and inversely as z, then we can write:

x = k * (y / z)

where k is a constant of proportionality.

We can find the value of k by substituting the given values of x, y, and z:

3 = k * (4 / 8)

Simplifying the right-hand side:

3 = k * 0.5

k = 6

Now we can use this value of k to find x when y is 3 and z is 2:

x = 6 * (3 / 2)

x = 9

Therefore, when y is 3 and z is 2, x is equal to 9.

Answer:

12/20=3/5   5/20=1/4 so the answer would be 12/20 + 5/20

Hope this helped you!!

Equivalent fractions for \(\boldsymbol{\frac{3}{5},\frac{1}{4}}\) are \(\boldsymbol{\frac{12}{20},\frac{5}{20}}\) respectively.

A fraction is a portion of another or, more broadly, a set of equal pieces. Equivalent fractions are fractional that have the same value notwithstanding their appearance.

\(\boldsymbol{\frac{3}{5}=\frac{3\times 4}{5\times 4}}\)

  \(=\frac{12}{20}\)

\(\boldsymbol{\frac{1}{4}=\frac{1\times 5}{4\times 5}}\)

  \(=\frac{5}{20}\)

So, equivalent fractions for \(\boldsymbol{\frac{3}{5},\frac{1}{4}}\) are \(\boldsymbol{\frac{12}{20},\frac{5}{20}}\) respectively.

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The value of x from the given figure is 12 units.

Two triangles are similar if the angles are the same size or the corresponding sides are in the same ratio. Either of these conditions will prove two triangles are similar.

From the given figure,

Consider ΔADC and ΔABC,

∠C=∠C (Reflex property)

AC=AC (Reflex property)

∠BAC=∠CDA=90°

By AA similarity, ΔADC ~ ΔABC

So, AC/BC = DC/AC

x/36 = 4/x

x²=36×4

x²=144

x=12 units

Therefore, the value of x from the given figure is 12 units.

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Answer:

The answer is 17.

Step-by-step explanation:

Since it's a parallelogram, VY = WX.

Therefore, \(5x + 2 = 6x - 1\).

Solving for x we get: \(x = 3\)

To get the measure of segment WX, substitute \(x = 3\) back into the side \(6x - 1\). Therefore \(6x - 1 = 6(3) - 1 = 17\)

Answer: 77

Step-by-step explanation: 360 - 283

283 is the sum of all the other angles and 360 is the total

The critical value for the 0.05 level of significance is k = 21.

To find the critical value, we can use the binomial distribution. The binomial distribution models the number of successes in n independent Bernoulli trials, each with probability p of success. In this case, the number of successes is the number of dog owners who say Woof Chow is their regular brand, and the number of trials is n = 100. The null hypothesis is that the true market share of Woof Chow is 25%, and the alternative hypothesis is that it is not 25%.

We can use the binomial cumulative distribution function (CDF) to find the critical value. The CDF gives the probability of getting k or fewer successes in n trials, given a probability of success p. The critical value is the smallest value of k such that the CDF at k is greater than or equal to 1 - alpha, where alpha is the level of significance. In this case, alpha = 0.05.

So, we want to find the smallest k such that:

P(X <= k) >= 1 - 0.05

where X is a random variable representing the number of dog owners who say Woof Chow is their regular brand. We can use a binomial calculator or a software package to calculate the binomial CDF, or we can use a table of critical values for the binomial distribution.

The critical value for the 0.05 level of significance is k = 21. This means that if the true market share of Woof Chow is 25%, then the probability of getting 23 or more dog owners who say Woof Chow is their regular brand is less than 0.05. Since the observed number of dog owners who say Woof Chow is their regular brand is 23, which is greater than 21, we can reject the null hypothesis that the true market share is 25%.

This means that based on the survey results, we cannot conclude that Woof Chow has a market share of 25%. The survey results suggest that Woof Chow may have a market share that is greater than 25%.

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The minute hand of a clock turns through 240 degrees from 6:20 am to 7:00 am on the same day.

To determine the number of degrees the minute hand of a clock turns from 6:20 am to 7:00 am on the same day, we need to calculate the elapsed time in minutes and convert it to degrees.

From 6:20 am to 7:00 am, there are 40 minutes elapsed.

In a clock, the minute hand completes a full revolution (360 degrees) in 60 minutes. Therefore, in one minute, the minute hand turns 360 degrees / 60 minutes = 6 degrees.

Now, we can calculate the degrees the minute hand turns from 6:20 am to 7:00 am:

Degrees = Minutes × Degrees per minute

Degrees = 40 minutes × 6 degrees per minute

Degrees = 240 degrees

So, the minute hand of a clock turns through 240 degrees from 6:20 am to 7:00 am on the same day.

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Answer: 5/14 ^^

Step-by-step explanation:

Answer:

Step-by-step explanation:

wow,  they really try to make these probablity questions difficult.  so they say 5 but really,  b/c the 1st one is heads ,  we are tossing the coin 4 more times, to find 3 heads b/c we already got one.    wow,  I'm mad at the teacher that asked this.  :P   Just say 4 flips for 3 heads.

P(H) = heads

P(H) =1/\(2^{4}\)   probability is 1/\(2^{4}\) because we have two outcomes and four tries.

P(H) = 1/16

P(H>=3)  3 * 1/16

P(H>=3) = 3/16

if there is an argument that you have to take 1/\(2^{5}\) into account by the teacher tell them that it was already resolved ,  the first flip is not a "probablity" any longer.  It's heads,  100%  ,  it doesn't affect the next tosses b/c this is a "fair" coin and it's going to land on heads  50% of the time, for every toss.   Just my rant.  :P  

Answer:

T(3, 8)

Step-by-step explanation:

Yes, it can.

Use the midpoint formula with points S and Z, and solve for point T.

M( (x_1 + x_2)/2 , (y_1 + y_2)/2 )

Z(3, 5) = ( (3 + x)/2 , (2 + y)/2 )

(3 + x)/2 = 3

3 + x = 6

x = 3

(2 + y)/2 = 5

2 + y = 10

y = 8

T(3, 8)

Answer:

5/4

Step-by-step explanation: