Mariah has a spinner that has 10 equal sections, each containing a different number from 1 to 10. Mariah determines about how many times the spinner will land on a number that is greater than 7 in 250 spins, and her work is shown below.

P (number greater than 7) = StartFraction Number greater than 7 over Total number of sections EndFraction times number of spins = StartFraction 4 over 10 EndFraction (250) = 100.

What mistake did Mariah make, if any?
Mariah has the formula reversed; it should be the total number of sections over the numbers greater than 7.
Mariah should have used a 3 in the numerator because there are 3 numbers greater than 7.
Mariah should multiply by the number of sections in the spinner rather than the total number of spins.
Mariah calculated the prediction correctly and did not make any mistakes.

Answer:

please make me brainalist and keep smiling dude I hope you will be satisfied with my answer is updated

Step-by-step explanation:

Answer: X

Step-by-step explanation:

Option B is correct, Vincent will be able to buy the sneakers, while David will not be able to.

Because the shoe cost after including sales tax is

6% of 86$ is 5.16$

so, 86 + sales tax (which is 5.16) = 91.16$

David only has 90$ so he can't afford the sneakers. They are 1.16$ over his budget.

While for Vincent,

9% of 86$ is 7.74$

so, 86 + sales tax (which in this case is 7.74) = 93.74

Vincent has 95$ to spend so he can afford the shoes.

A sales tax is a tax paid to a governing body for the income of certain items and services. Typically, legal guidelines permit the seller to gather funds for the tax from the customer at the factor of purchase. While a tax on goods or services is paid to a governing body immediately by means of a patron, it also includes called a use tax. frequently legal guidelines offer for the exemption of positive goods or services from income and use tax, which includes food, schooling, and medicines. A fee-introduced tax (VAT) collected on goods and services is associated with a sales tax. See the contrast with income tax for key variations.

Traditional or retail income tax is levied at the sale of an amazing to its very last quit person and is charged whenever that item is sold retail. sales to corporations that later resell the products aren't charged the tax. A patron who isn't always an end-user is generally issued a "resale certificate" by way of the taxing authority and required to provide the certificate (or its identification variety) to a seller on the point of buy, at the side of an assertion that the object is for resale. The tax is otherwise charged on each item sold to clients without any such certificate and who are underneath the jurisdiction of the taxing authority.

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The integral of \(cx^{2}zds\) over the line segment c from (0,-2,-4) to (-6,-5,-6) is -9.

To evaluate the line integral of the given vector field over the given curve, we can parametrize the curve and then substitute into the vector field to get a scalar function. Then we can integrate that scalar function over the parameter range.

The parametric equations of the line segment from (0,-2,-4) to (-6,-5,-6) are:

x = 6t

y = -2-3t

z = -4-2t

where t ranges from 0 to 1.

Substituting these parametric equations into the integrand, we get:

\(x^{2}z = (6t)^{2}(-4-2t) = -72t^{3} - 144t^{2}\)

Then, we can calculate the differential element ds as:

\(ds = \sqrt((dx/dt)^{2} + (dy/dt)^{2} + (dz/dt)^{2}) dt\)

\(ds = \sqrt(9t^{2} + 4) dt\)

So the line integral becomes:

\(\int {c x^{2}z} \, ds = \int0^{1} (-72t^{3} - 144t^{2}) \sqrt(9t^{2} + 4) dt\)

This integral can be evaluated using u-substitution with u = \(9t^{2} + 4, du/dt = 18t dt\)

\(\int {c x^{2}z} \, ds = (-1/36) \int13^{13}/4 (u - 4)^{(3/2)} du\)

\(= (-1/54) [(u - 4)^{(5/2)}]13^{13}/4\\ = (-1/54) [(13 - 4)^{(5/2)} - (4 - 4)^{(5/2)}]\\ = (-1/54) (9^{(5/2)} - 0)\\ = -243/54\\ = -9\)

Therefore, the line integral of the given vector field over the line segment from (0,-2,-4) to (-6,-5,-6) is -9.

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Answer:

Step-by-step explanation:

|2i+3j|=√(2²+3²)=√(4+9)=√13

Answer:

Step-by-step explanation: d

Answer:

7.625597485 DFNFNFJFKJFKF

The test statistic (-2600) is much smaller than the critical value (1.645), we can reject the null hypothesis. Therefore, based on the given sample, the Republican candidate has a chance to win the election.

To determine if the Republican candidate has a chance to win, we can conduct a hypothesis test using the given information.

Let's set up the hypotheses:

Null Hypothesis (H0): The proportion of voters planning to vote for the Republican candidate is equal to or less than the proportion of registered Democrats.

Alternative Hypothesis (Ha): The proportion of voters planning to vote for the Republican candidate is greater than the proportion of registered Democrats.

Now, we can calculate the test statistic and compare it to the critical value.

First, we need to calculate the standard error of the proportion:

SE = sqrt(p * (1 - p) / n)

where p is the proportion of registered Democrats and n is the sample size.

p = 0.55 (given)

n = 1200 (sample size)

SE = sqrt(0.55 * (1 - 0.55) / 1200)

SE = sqrt(0.55 * 0.45 / 1200)

SE = sqrt(0.022275 / 1200)

SE ≈ 0.015

Next, we calculate the test statistic:

z = (x - μ) / SE

where x is the number of voters planning to vote for the Republican candidate and μ is the expected number of voters based on the proportion of registered Democrats.

μ = p * n

μ = 0.55 * 1200

μ = 660

z = (621 - 660) / 0.015

z = -39 / 0.015

z ≈ -2600

Finally, we compare the test statistic to the critical value at a significance level of α = 0.05.

Since the alternative hypothesis is that the proportion of voters planning to vote for the Republican candidate is greater than the proportion of registered Democrats, we will perform a one-tailed test.

Using a standard normal distribution table or software, the critical value for a one-tailed test at α = 0.05 is approximately 1.645.

Since the test statistic (-2600) is much smaller than the critical value (1.645), we can reject the null hypothesis.

Therefore, based on the given sample, the Republican candidate has a chance to win the election.

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Answer:

-249/28

Step-by-step explanation:

Answer:

-2²   - (-8)  + 1

Step-by-step explanation:

The values given are:

             w = -2 and v = -8

Expression given:

             w² - v + 1

When we substitute, we put a certain value in place of another. In an equation, variables are used as placeholders.

 For this problem:

     w = -2

      v  = -8

So;

            -2²   - (-8)  + 1

Answer:

Given that w=-2 and v=-8

The expression is w²-v+1

Now putting the value of w=-2 and v=+8 in the given expression, we get

(-2)²-(-8)+1

Hence, (-2)²-(-8)+1 is the right answer.

Answer:

the ratio is 12:5

Step-by-step explanation:

48:20 divided in half 24:10 divided in half 12:5

Answer:

A = 2(7) + (1/2)(4)(4 + 9) = 14 + 26 = 40 m²

Answer:

4(x + 12) = 4x + 48

Step-by-step explanation:

Answer:

2(2x + 6)

Step-by-step explanation:

The Measure of angle A is 120°, Measure of angle C = 120° and the Measure of angle D is 60°

In a parallelogram, opposite angles are congruent. Therefore, if the measure of angle A is 120°, then the measure of angle C is also 120°.

Since angle A and angle C are opposite angles, their adjacent angles are also congruent. This means that the measure of angle B is equal to the measure of angle Z.

Now, let's consider angle D. In a parallelogram, the sum of the measures of adjacent angles is always 180°. Since angle C is 120°, the adjacent angle D must be:

180° - 120°

= 60°.

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Answer:

c

Step-by-step explanation:

x=1 g(x)=-10

x=2 g(x)=-12

x=3 g(x)=-14

f(x)=x+4

=＞ g(x)=-2·(x+4)

In the special case of two degrees of freedom, the chi-squared distribution does not coincide with the exponential distribution. The chi-squared distribution is a continuous probability distribution that arises in statistics and is used in hypothesis testing and confidence interval construction. It is defined by its degrees of freedom parameter, which determines its shape.

On the other hand, the exponential distribution is also a continuous probability distribution commonly used to model the time between events in a Poisson process. It is characterized by a single parameter, the rate parameter, which determines the distribution's shape.

While both distributions are continuous and frequently used in statistical analysis, they have distinct properties and do not coincide, even in the case of two degrees of freedom. The chi-squared distribution is skewed to the right and can take on non-negative values, while the exponential distribution is skewed to the right and only takes on positive values.

The chi-squared distribution is typically used in contexts such as goodness-of-fit tests, while the exponential distribution is used to model waiting times or durations until an event occurs. It is important to understand the specific characteristics and applications of each distribution to appropriately utilize them in statistical analyses.

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ANSWER:

STEP-BY-STEP EXPLANATION:

We have the following information.

We can calculate the adjacent leg by means of Pythagoras' theorem, just like this:

We determine that the angle is in the third quadrant

To do content analysis on the characteristics people seek in a partner by examining the personals section of three newspapers the unit of analysis will be objective of the section.

Given that we are interested in doing content analysis on the characteristis people seek in a partner by examining the personals section of three newspaper.

Content analysis is basically a research tool used to determine the presence of certain words, themes,or concepts within some given qualitative data. Using content analysis, a researchers can quantify and analye the presence meanings and relationships of such certain words, themes and concepts.

When we are required to do content analysis by examining the personals section of three newspapers, its units can be objective of section. Some part is related to matrimonials, some are for rent,etc.and some are for commercial advertisements.

Hence the unit of analysis is objective of the section.

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Point (5,19/3), which divides segment AB in a 2:1 ratio, is the point. The act of dividing anything enormous into two or more separate portions is what causes it to be divided into these sections.

When point C internally divides the line segment in the ratio m: n and is located between the line segment's coordinates, we can utilize this formula. Internal Division is another name for it.

calculation

Let's say that point divides segment AB in a ratio of 2:1. (x,y)

\(x = \frac{m1x1 + m2x2}{m1 + m2}\)

\(y = \frac{m1y1 + m2y2}{m1 + m2}\)

the line segment's ends are (x1,y1) and (x2,y2), respectively.

Points A's coordinates (1,3)

Points B's coordinates (7,8)

\(x = \frac{2*7 + 1 *1}{1 + 2}\) = x = 5

Similarly, y = 19/3

So (x, y)≡(5,19/3)

Point (5,19/3), which divides segment AB in a 2:1 ratio, is the point. The act of dividing anything enormous into two or more separate portions is what causes it to be divided into these sections.

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Answer:

50%

Step-by-step explanation:

Since 900 is half of 1800, that means half of the people surveyed were satisfied.

As a percent, half is represented by 50%

So, 50% of the people surveyed were satisfied with the car

Answer:

I think it's 56 is the answer

Answer:

4. d = 4

5. d = 8.8

6. d = 6

7. d = 10

8. d = 3

9. d = 1

Step-by-step explanation:

4. (-5, 2), (-5, 6)

    (x₁, y₁)  (x₂, y₂)

d = √(x₂ - x₁)² + (y₂ - y₁)²

d = √(-5 - (-5))² + (6 - 2)²

d = √(-5 + 5)² + (4)²

d = √(4)²

d = √16

d = 4

5. (4.5, -3.3), (4.5, 5.5)

       (x₁, y₁)      (x₂, y₂)

d = √(x₂ - x₁)² + (y₂ - y₁)²

d = √(4.5 - 4.5)² + (5.5 - (-3.3)²

d = √(0)² + (5.5 + 3.3)²

d = √(8.8)²

d = √77.44

d = 8.8

6. ((5(1/2), (-7(1/2)) and ((5(1/2), (-1(1/2))

         (x₁,     y₁)                   (x₂,     y₂)

d = √(x₂ - x₁)² + (y₂ - y₁)²

d = √(11/2) - (11/2)² + (-3/2) - (-15/2))²

d = √(d)² + ((-3/2) + (15/2)²

d = √(6)²

d = √36

d = 6

7. (-2(1/4)), -8) and (7(3/4), -8)

        (x₁,   y₁)               (x₂, y₂)

d = √(x₂ - x₁)² + (y₂ - y₁)²

d = √(31/4) - (-9/4))² + (-8 - (-8))²

d = √(31/4) + (9/4))² + (-8 + 8)²

d = √(10)²

d = √100

d = 10

8. (5(1/4)), (-3(1/4) and ((5(1/4), (-6(1/4))

         (x₁,     y₁)                    (x₂, y₂)

d = √(x₂ - x₁)² + (y₂ - y₁)²

d = √(21/4) - (21/4))² + (-25/4) - (-13/4))²

d = √(-25/4) + (13/4))²

d = √(-3)²

d = √9

d = 3

9. (-1(1/2)), (-6(1/2) and ((-2(1/2), (-6(1/2))

          (x₁, y₁)                        (x₂, y₂)

d = √(x₂ - x₁)² + (y₂ - y₁)²

d = √(-5/2) - (-3/2))² + (-13/2) - (-13/2))²

d = √(-5/2) + (3/2))²

d = √(-1)²

d = √1

d = 1

I hope this helps!

The table to show the number of candles each person sold after each day is as given in the table below.

We are told that Lilit and Sergio sold candles for a class trip. Now, on the first day of sales, we are told that Lilit sold 8 candles and Sergio sold 10 candles.

For the next 3 days both sold an additional 3 candles daily.

Thus;

Number of candles sold by Lilit on day 2 = 8 + 3 = 11 candles

Number of candles sold by Lilit on day 3 = 11 + 3 = 14 candles

Number of candles sold by Sergio on day 2 = 10 + 3 = 13 candles

Number of candles sold by Sergio on day 3 = 13 + 3 = 16 candles

Therefore, the table to show the number of candles each person sold after each day is;

Number of days                    Lilit                         Sergio    

day 1                                       8                               10

day 2                                      11                               13

day 3                                      14                              16

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Answer:

ok

Step-by-step explanation:

Answer:

I have small cranium. small brain

7.77% of first graders will need developmentally appropriate math and English lessons.

Probability calculations assuming that freshmen entering a private institution have a 61% chance of not needing a math development course or an English development course, compared to 21% and 37%, respectively.

Therefore, the probability is equal to 0.21 x 0.

37, representing 7.77%.

We now know that there is a 7.77% probability that new students will need developmental mathematics and English studies courses.

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Answer:

-12x+28

Step-by-step explanation:

if correct plz mark as brainliest

thank you

19NBoli

Answer:

-12x - 7.

Step-by-step explanation:

Hope this helps!

Answer: 25

Step-by-step explanation:

they are corresponding angles