someone help me I'LL GIVE BRAINLIESTTT!! THIS NEEDS TO BE DONE IN 30 MINS​

Answer:

2000*1.75 makes 3500 tickets sold Saturday.

Step-by-step explanation:

2000*1.75 makes 3500 tickets sold Saturday.

Answer:

700 tickets sold on Saturday

Step-by-step explanation:

Find 175% of 400:

175 * 400 / 100 = 700

the probability that at least seven customers arrive in three minutes, given that exactly two arrive in the first minute, is approximately 0.081 or 8.1%.

How to solve?

To solve this problem, we can use the Poisson distribution, which models the probability of a certain number of events occurring in a fixed interval of time or space, given the expected rate of occurrence.

Let lambda be the expected rate of customer arrivals per minute. If exactly two customers arrive in the first minute, then the expected number of customers to arrive in three minutes is lambda ×3. We can use this expected value to calculate the probability of at least seven customers arriving in three minutes:

P(X ≥ 7 | X ~ ∝(λ×3))

= 1 - P(X ≤ 6 | X ~ ∝(λ×3))

= 1 - ∑[k=0 to 6] (e²(-λ3) ×(lλ3)²k / k!)

where e is the mathematical constant approximately equal to 2.71828, and k! denotes the factorial of k.

To find lambda, we can use the fact that exactly two customers arrive in the first minute. The Poisson distribution assumes that the number of events in a fixed interval of time or space follows a Poisson distribution with parameter lambda, which represents the expected rate of occurrence. Therefore, lambda is equal to the number of customers arriving per minute, which is 2.

Substituting lambda = 2 into the formula, we get:

P(X ≥ 7 | X ~ ∝(2×3))

= 1 - P(X ≤ 6 | X ~ ∝(6))

= 1 - ∑[k=0 to 6] (e²(-6) ×6²k / k!)

Using a calculator or computer software, we can evaluate this expression to get:

P(X ≥ 7 | X ~ ∝(6)) ≈ 0.081

Therefore, the probability that at least seven customers arrive in three minutes, given that exactly two arrive in the first minute, is approximately 0.081 or 8.1%.

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Answer:

the image because the pre image would be before the image

Answer:

20 12cost and the the rest 16

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

week 1: $56.92

week 2:-$16.54

-16.54-56.92=-73.46

The probability that at least one of the randomly selected 5 people without a high school degree smokes cigarettes daily is approximately 0.67232 or 67.232%.

To find the probability that at least one of the randomly selected 5 people who do not have a high school degree smokes cigarettes daily, we can calculate the probability of the complement event (none of them smoke daily) and subtract it from 1.

Let's denote the event "at least one of them smokes daily" as A. The complement event "none of them smoke daily" is denoted as A'.

The probability that an individual without a high school degree smokes daily is 19%. Therefore, the probability that an individual does not smoke daily is 100% - 19% = 81%.

Assuming independence among individuals, the probability that none of the 5 randomly selected people smokes daily is:

P(A') = (0.81)^5

Thus, the probability that at least one of them smokes daily (P(A)) is:

P(A) = 1 - P(A')

= 1 - (0.81)^5

Calculating this expression:

P(A) ≈ 1 - 0.32768

≈ 0.67232

Therefore, the probability that at least one of the randomly selected 5 people without a high school degree smokes cigarettes daily is approximately 0.67232 or 67.232%.

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Answer:

1 mile

Step-by-step explanation:

Jamal's Distance = 3 miles

Since Brendan lives 2 miles closer than Jamal, you do 3 - 2 = 1

Since Jamal lives 1 mile closer than Aisha, you do 3 - 1 = 2

Then, you do 2 - 1

Answer: 1

Answer:

a = 16

Step-by-step explanation:

The median is the middle value of the data arranged in ascending order.

If there is no exact middle then the median is the average of the 2 values either side of the middle

a + 1 , 2a - 1 ,  a + 7 ,  3a + 4

                   ↑ middle

Then

\(\frac{2a-1+a+7}{2}\) = 27 ( multiply both sides by 2 to clear the fraction )

3a + 6 = 54 ( subtract 6 from both sides )

3a = 48 ( divide both sides by 3 )

a = 16

Given data:

The amount Rosa earned per hour is 12.25$.

The expression for the given statement is,

Multiply the above expression by 19 1/2 on both sides.

Thus, the amount earned by Rosa in 19 1/2 hours is $238.87.

Answer: 96 cups

Step-by-step explanation: A gallon  holds 128 ounces there were 6 gallons used to make the punch. 128x6= 768 ounces

A cup holds 8 ounces so you would do 768/8 and that would give you 96 cups

the system of autonomous first-order differential equations in vector field format is: du/dt = F_1(u, v) = u + v^2 + u - e^(2t), dv/dt = F_2(u, v) = lj + j + 2u - 1

To obtain a system of autonomous first-order differential equations in vector field format, we can rewrite the given equations as follows:

Equation 1: x + y^2 + x = e^(2t)

Equation 2: lj + j + 2x = 1

Let's denote the variables as x = x(t) and y = y(t). Now, we can rewrite the equations in vector field format by introducing two new variables, u = x and v = y:

Equation 1: u + v^2 + u = e^(2t)

Equation 2: lj + j + 2u = 1

Now, we can express the system of equations as a vector field:

Let F(u, v) be the vector field defined as F(u, v) = (F_1(u, v), F_2(u, v))

F_1(u, v) = u + v^2 + u - e^(2t)

F_2(u, v) = lj + j + 2u - 1

Therefore, the system of autonomous first-order differential equations in vector field format is:

du/dt = F_1(u, v) = u + v^2 + u - e^(2t)

dv/dt = F_2(u, v) = lj + j + 2u - 1

Note: The values of l and j were not provided, so I have kept them as variables in the equations. Please substitute the appropriate values for l and j to obtain the specific system of equations.

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The probability of obtaining exactly three of the same result when flipping a fair coin four times in a row is 0.25.

Let's calculate the probability of getting the same outcome when flipping a fair coin n times in a row.

Meaning of a fair coin:

A coin is known as a fair coin if it has two sides and there is an equal probability of both sides appearing.

In other words, the probability of each side appearing is 0.5, implying that there is a 50 percent chance of it appearing.

The total number of outcomes that can be obtained when a fair coin is flipped n times in a row is 2n.

The total number of possible outcomes in this scenario is 2n.

Let's look at the likelihood of obtaining the same result when flipping a fair coin n times in a row.

The probability of obtaining the same result when flipping a fair coin n times in a row is:

P(H) = probability of getting a head P(T) = probability of getting a tail.

The probability of obtaining the same outcome when flipping a fair coin n times in a row is : P(HH...H) + P(TT...T) = (0.5)n + (0.5)n

= 2(0.5)n

= 2n-1.

For n = 4, P(HH...H) + P(TT...T)

= (0.5)4 + (0.5)4

= 0.0625 + 0.0625

= 0.125, or 1/8.

Exactly k outcomes are expected to occur with a probability of (n choose k) x (1/2)k x (1/2)n-k.

The probability of obtaining exactly k results when flipping a fair coin n times in a row is calculated using this formula.

Let's look at the probability of obtaining exactly k outcomes when flipping a fair coin n times in a row.

This is the binomial distribution formula.

P(X=k) = \((nCk)*(p^k)*((1-p)^(n-k)),\) here p=0.5 as it's a fair coin.
Where, n = the number of coin flips
p = probability of getting the same result in each flip (0.5 for a fair coin)
k = number of times the same result is obtained

For k=3, the probability is : \(P(X=3) = (nCk)*(p^k)*((1-p)^(n-k))P(X=3)\)

\(= (4C3)*((0.5)^3)*((1-0.5)^(4-3))=4*0.125*0.5=0.25\)

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Answer:

610° and 970°

Step-by-step explanation:

to find coterminal angle add/ subtract 360° to the terminal angle.

in this case 2 positive measures are required to add 360°, that is

250° + 360° = 610° ( add 360° to this value )

610° + 360° = 970°

the next 2 positive coterminal angles are 610° and 970°

If the value of n equals \(-\frac{1}{10}\), then the given equation would be true.

_________________________________________________

Isolate the variable by dividing each side by factors that do not contain the variable. This being said and dealt with, n = \(-\frac{1}{10}\)

Now, in order to determine if the value of n truly does make the equation true, we put \(-\frac{1}{10}\) in replacement of the n values of the equation. In this situation, the left side 9.8 is equal to the right side 9.8 after \(-\frac{1}{10}\) is inserted. This means that the given statement is always true with \(n = -\frac{1}{10}\).

Hope this helps!

Answer:

88.8 km/h

Step-by-step explanation:

Answer:

x = 29.5

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

cos x = adj side/ hypotenuse

cos x = 67/77

Taking the inverse cos of each side

cos^-1( cos x) = cos^-1 (67/77)

x = 29.52626525

To the nearest tenth

x = 29.5

Answer:

- 4(4z + 3)

Step-by-step explanation:

- 16z - 12 ← factor out - 4 from each term

= - 4(4z + 3)

Answer:

Step-by-step explanation:

32

Answer:

x=8 and y= -9

Step-by-step explanation:

(-5x-7y=23)x3

(3x+4y=-12)x5

-15x-21y=69

15x+20y=-60

-y=9

y=-9

x=8

Store #1 has the better price amount , as the price per dozen eggs is $1.44, whereas Store #2 is $1.29 per dozen eggs.

Store #1 has the better price, as the price per dozen eggs is $1.44, whereas Store #2 is $1.29 per dozen eggs. To compare the prices, we need to calculate the cost per dozen eggs for each store. To do this, we divide the cost by the number of eggs. For Store #1, the cost per dozen eggs is $1.44 divided by 12, which is $0.12. For Store #2, the cost per dozen eggs is $4.68 divided by 36, which is $0.13. Therefore, Store #1 has the better price, as it is cheaper than Store #2. By comparing prices, we can find the best deal for our money. It is important to compare prices to get the best value for our money, as it can help us save money in the long run. Additionally, by comparing prices, we can make sure we are getting the highest quality product at the best price.

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Answer:

C. Because (-3)^2 is NOT equal to -9

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

√-9 is   3i.

Since there is a negative in the root, you can't have a regular number as the answer.

It askes why -3 is not the answer. Because -3 squared is 9, not -9.  

The value of h(20) is 46 and the meaning in the context of the situation is that the balloon is at 46 feet after 20 seconds

The equation of the function is given as

h(t) = 2t + 6

For h(20), it means that t = 20

So, we have

h(20) = 2 * 20 + 6

Evaluate

h(20) = 46

Hence, the value of h(20) is 46 and the meaning in the context of the situation is that the balloon is at 46 feet after 20 seconds

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The snapshot graph of the wave at t=0s is a graph of the displacement of the wave along the x-axis at time t=0s.

It is a graph of the wave's initial position, which is usually a sinusoidal graph with a maximum value at the center and decreasing values as x increases. This is because the wave is traveling from left to right and its amplitude decreases as it moves further from its source. To explain in more detail, a sinusoidal wave is a wave that oscillates up and down in a regular pattern.

The snapshot graph at t=0s will show the wave at its highest point, which is the amplitude of the wave. As the wave moves along the x-axis, its amplitude will decrease as it moves further from its source. The graph will also show the wave's wavelength, which is the distance between two successive crests or troughs.

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The statement "A necessary condition for an integer to be divisible by 6 is that it be divisible by 3" is true.

To determine the correctness of the given statement, we need to analyze the conditions and provide supporting evidence. In this case, the statement states that for an integer to be divisible by 6, it must also be divisible by 3. By examining the provided sentences, we can arrange them in the correct order to construct a logical argument.

The first sentence presents a proof by supposing that n is any integer divisible by 6. It states that n can be expressed as n = 6r for some integer, and since 2r is a product of integers, it is also an integer. Consequently, n can be represented as n = 3(2r), demonstrating that n is divisible by 3.

The second sentence concludes that the above proof shows the truth of the statement. It establishes the validity of the necessary condition for an integer to be divisible by 6, which is being divisible by 3.

Lastly, the third sentence introduces a counterexample where n is set to 15. This counterexample demonstrates a situation where n is divisible by 3 but not divisible by 6, thus refuting the statement.

By organizing the sentences in this order, we can see that the statement is false, as evidenced by the counterexample.

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Answer:

29 adults went to the zoo

158 children went to the zoo

Explanation:

Let x represent the number of adults that went to the zoo

Let y represent the number of children that went to the zoo

From the question, we can go ahead and set up the below system of equations;

We'll go ahead and solve the above system of equations simultaneously following the below steps;

Step 1: Express y in terms of x in Equation 1;

Step 2: Substitute y in Equation 2 with (187 - x) and solve for x;

So 29 adults went to the zoo

Step 3: Substitute x in Equation 3 with 29 and solve for y;

So 158 children went to the zoo

Answer:

Step-by-step explanation:

area formula is

π\(r^{2}\)

plug in values:

9π

which equals

28.2743339

or you can write 9π im not sure what your teacher prefers

circumference formula is

2πr

which equals

6π

or

18.8495559

Answer:

A lower price and quantity would result.

Answer:

8*2(16*2)=32  hours

Step-by-step explanation: