hey guys, I need help with this question asap

The Frisbee following a parabolic path will take  8.5 seconds to hit the ground.

Given that:

h(t) = â€" 0.07t2 - 0.007t - 5

The given equation is the parabolic equation showing the path traced by the frisbee. from the equation

h = height from ground

t = time consumed in seconds

time it takes to hit the ground will be at h = 0.  we therefore solve as follows:

h(t) = â€" 0.07t2 - 0.007t - 5

0 = 0.07t2 + 0.007t + 5

\(=\frac{-0.007+or-\sqrt{0.007^{2}-4*0.07*-5 } }{2*0.07}\)

\(=\frac{-0.007+or-\sqrt{0.0049+1.4 } }{0.14}\)

\(=\frac{-0.007+or-\sqrt{1.3951 } }{0.14}\)

=8.5 or -8.5 seconds

≅ 8.5 seconds

We choose the positive which is 8.5 seconds and can therefore say that the first option is the correct option.

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The maximum likelihood estimate of σ² is given by:

σ² = 10/(x₁² + x₂² + x₃² + x₄² + x₅²)

plugging in the given data points, we have:

σ² = 10/(2² + 3² + 1² + 1² + 2²)    = 10/19

hence, the maximum likelihood estimate of σ² is 10/19.

to find the maximum likelihood estimate (mle) of σ², we need to maximize the likelihood function based on the observed data.

given that the resulting x-displacement and y-displacement are zero-mean gaussian distributions with the same variance σ², the absolute distance from the origin follows a rayleigh distribution. the probability density function (pdf) of the rayleigh distribution is given by:

f(x; σ) = (x/σ²) * exp(-x²/(2σ²)), for x ≥ 0

to find the likelihood function, we multiply the pdf for each observed data point. since the observations are independent, the likelihood function is the product of the individual pdfs:

l(σ²) = f(x₁; σ) * f(x₂; σ) * f(x₃; σ) * f(x₄; σ) * f(x₅; σ)

taking the logarithm of the likelihood function (log-likelihood) simplifies the calculations and does not affect the location of the maximum:

ln(l(σ²)) = ln(f(x₁; σ)) + ln(f(x₂; σ)) + ln(f(x₃; σ)) + ln(f(x₄; σ)) + ln(f(x₅; σ))

substituting the pdf of the rayleigh distribution and simplifying further:

ln(l(σ²)) = -5ln(σ) - (1/σ²)(x₁² + x₂² + x₃² + x₄² + x₅²)/2 + constant

to find the maximum likelihood estimate, we differentiate the log-likelihood function with respect to σ² and set it equal to zero:

d/d(σ²) [ln(l(σ²))] = -5/σ² + (x₁² + x₂² + x₃² + x₄² + x₅²)/(2σ⁴) = 0

solving for σ²:

5/σ² = (x₁² + x₂² + x₃² + x₄² + x₅²)/(2σ⁴)

σ⁴ = 10/(x₁² + x₂² + x₃² + x₄² + x₅²)

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Question:

Two red and two blue blocks....

Answer:

\(P(Not\ Blue) = \frac{1}{2}\)

Step-by-step explanation:

Given

\(Red = 2\)

\(Blue = 2\)

Required

Probability of not selecting blue

First, we calculate the probability of selecting blue

\(P(Blue) = \frac{Blue}{Total}\)

\(P(Blue) = \frac{2}{2+2}\)

\(P(Blue) = \frac{2}{4}\)

\(P(Blue) = \frac{1}{2}\)

In probability:

Opposite probabilities sum up to 1 i.e.

\(P(Blue) + P(Not\ Blue) = 1\)

This gives

\(\frac{1}{2} + P(Not\ Blue) = 1\)

\(P(Not\ Blue) = 1 - \frac{1}{2}\)

\(P(Not\ Blue) = \frac{2-1}{2}\)

\(P(Not\ Blue) = \frac{1}{2}\)

Answer:

the answer would be 1/2 .,

A model of a dinosaur skeleton was made using a scale of 1 ft : 10 ft in a museum. If the size of the dinosaur's tail in the model is 4 ft, then find its actual length. 1 ft : 10 ft 4 ft : x x = 4ft x 10ft / 1 ft = 40 ft2 / ft = 40 ft ∴ The dinosaur's tail is actually 40 ft long. 8.

Answer:

it cannot be determined not enough info

Answer:

\(10^7\)

Step-by-step explanation:

There are \(7\) zeroes in the number \(10,000,000\). Therefore, \(10,000,000\) can be written as \(\fbox{$10^7$}\).

*Any number written as \(10^n\) will be equal to \(1\) followed by \(n\) zeroes.

Answer:10^7

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

(40/5)-7+2

PEMDAS says parentheses first, so divide inside the parentheses

(8)-7+2

Then add and subtract from left to right

1 +2

3

Answer:

3

Step-by-step explanation:

Using PEMDAS:

(40/5)-7+2

- > 40/5 - 8

8 - 7 + 2

1 + 2

3

Hope this helps you.

6-65)

6-66)
a) To represent Eduardo's age, we can write - Eduardo's age = X - 4

b) To represent the number of butterflies Eduardo has, we can write B = 2x + 12

6-67)

a) When x = 0: 3x-2 < 4x+4

b) When x = -6: 3x-2 = 4x+4

c) When x = 5: 3x-2 < 4x+4
d) When x = -2: 3x-2 < 4x+4

6-68)

a. "When you double my number and subtract 9, you get my original number. Victor's number is 9.

b. "When you double my number and add 5, you get 17. Victor's number is 6.

6-65)

a.

Substituting x = -5 into the equation 5x + 8 = 3x - 2, we get:

5(-5) + 8 = 3(-5) - 2

-17 = -17

The equation holds true, which means that x = -5 is a correct solution to the equation.

b.

Substituting x = 4 into the equation 2(x+1) + 6 = 20 - 3x, we get:

2(4+1) + 6 = 20 - 3(4)

16 = 8

The equation does not hold true, which means that x = 4 is an incorrect solution to the equation.


6-66)
To represent Eduardo's age, let's use the variable "E". Since Andy is 4 years older than Eduardo, we can write:

Andy's age = X

Eduardo's age = X - 4

To represent the number of butterflies Eduardo has, let's use the variable "B", and the number of moths as "x". Since the number of butterflies is 12 more than twice the number of moths, we can write:

B = 2x + 12

6-67)
To evaluate the expressions 3x-2 and 4x + 4 for different values of x, we substitute the value of x into the expression and simplify. Then, we compare the two resulting values using <, >, or =.

When x = 0:

3x-2 = 3(0)-2 = -2

4x+4 = 4(0)+4 = 4

-2 < 4, so 3x-2 < 4x+4

When x = -6:

3x-2 = 3(-6)-2 = -20

4x+4 = 4(-6)+4 = -20

-20 = -20, so 3x-2 = 4x+4

When x = 5:

3x-2 = 3(5)-2 = 13

4x+4 = 4(5)+4 = 24

13 < 24, so 3x-2 < 4x+4

When x = -2:

3x-2 = 3(-2)-2 = -8

4x+4 = 4(-2)+4 = -4

-8 < -4, so 3x-2 < 4x+4



6-68)

a. Let's use the variable "x" to represent Victor's number. From the clue, we know that:

2x - 9 = x

Solving for x, we add 9 to both sides and get:

2x = x + 9

Subtracting x from both sides, we get:

x = 9

Therefore, Victor's number is 9.

b. Let's again use the variable "x" to represent Victor's number. From the clue, we know that:

2x + 5 = 17

Solving for x, we subtract 5 from both sides and get:

2x = 12

Dividing both sides by 2, we get:

x = 6

Therefore, Victor's number is 6.

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The factored form of the quadratic equation 2x² + 25x + 50 is (2x + 5)(x + 10)

Factoring quadratics is a method of expressing the quadratic equation ax² + bx + c = 0 as a product of its linear factors as (x - k)(x - h), where h, k are the roots of the quadratic equation ax² + bx + c = 0.

Therefore, let's factor the equation 2x² + 25x + 50.

2x² + 25x + 50

The two numbers one can multiply and add to get 100 and 25 respectively are 20 and 5.

Therefore,

2x² + 20x + 5x + 50

2x(x + 10)+ 5(x + 10)

Therefore,

(2x + 5)(x + 10)

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9 cm cm cm cm cm cm cm cm cm cm cm cm cm

Answer:

\(x = \sqrt{11}\)

Step-by-step explanation:

\(a^{2} +b^{2} =c^{2} \\\\\sqrt{6} ^{2} +\sqrt{5} ^{2} =c^{2} \\\\6 + 5 = c^{2} \\\\11 = c^{2} \\\\\sqrt{11} = c\)

Answer:

A.15.21

Step-by-step explanation:

In rounding of numbers when the next number is greater than 5 u round it on next number by adding one

Answer:

Step-by-step explanation:

A squiggly line can refer to a variety of different shapes or patterns. To create an equation using cosine that resembles a squiggly line, you can use a combination of sine and cosine functions with different frequencies and amplitudes. Here's an example equation that produces a squiggly pattern:

y = A * cos(B * x) + C * sin(D * x)

In this equation, A, B, C, and D are constants that you can adjust to modify the shape and characteristics of the squiggly line. By experimenting with different values for these constants, you can create various squiggly patterns. Keep in mind that the specific equation may vary depending on the exact shape and features you have in mind for the squiggly line.

Answer:

$25

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

7 1/2 = 7.5

3/4 = 0.75

7.5 ÷ 0.75 = 10

Check work:

0.75 x 10 = 7.5

The probability of no leaks in a 2,500-meter section of pipe using the Poisson approximation to the binomial is 0.857.

The probability of no leaks in a 2,500-meter section of pipe using the Poisson approximation to the binomial is 0.857.

1. Calculate the expected value (μ) for the Poisson Distribution:

μ = λ × t = (1 leak per 1,000 meters) × (2,500 meters) = 2.5

2. Calculate the probability of no leaks using the Poisson Distribution:

P(X=0) = e-μ × (μ^0/0!) = e-2.5 × (2.5^0/0!) = 0.857

The probability of no leaks in a 2,500-meter section of pipe using the Poisson approximation to the binomial is 0.857.

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The simplified results of the following fractions are;a. 2/7 + 3/7 = 5/7b. 1/3 + 1/6 = 1/2c. 4/3 + 2/7 = 34/21

Given are the following fractions;

a. 2/7 + 3/7

b. 1/3 + 1/6

c. 4/3 + 2/7

To add these fractions, we need to find the LCD of the denominators. In this case, the LCD is 7. Therefore,2/7 + 3/7 = 5/7b. 1/3 + 1/6. To add these fractions, we need to find the LCD of the denominators. In this case, the LCD is 6.

Therefore, 1/3 + 1/6 = 2/6 + 1/6 = 3/6 = 1/2c. 4/3 + 2/7

To add these fractions, we need to find the LCD of the denominators. In this case, the LCD is 21. Therefore, 4/3 + 2/7 = 28/21 + 6/21 = 34/21.

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The hypotheses for the test are H₀: σ₁² = σ₂² and H₁: σ₁² ≠ σ₂². This is a two-tailed test to assess if there is a difference in the standard deviations of sound levels between the areas designated as "casualty doors" and operating theaters. The claim being investigated is whether or not there is a difference in the standard deviations.

The hypotheses for the test are:

H₀: σ₁² = σ₂² (There is no difference in the standard deviations of the sound levels between the areas designated as "casualty doors" and operating theaters.)

H₁: σ₁² ≠ σ₂² (There is a difference in the standard deviations of the sound levels between the areas designated as "casualty doors" and operating theaters.)

This hypothesis test is a two-tailed test because the alternative hypothesis is not specifying a direction of difference.

To substantiate the claim that there is a difference in the standard deviations, we will conduct a two-sample F-test at a significance level of 0.10, comparing the variances of the two groups.

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Answer:

Answer:

No, because not everyone has the same opportunity to answer.

Step-by-step explanation:

Answer:

C is the correct answer

Step-by-step explanation:

I just took the quiz on edge 2023

Answer:

I'm pretty sure the answer is 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

In triangle LON, <O = 90°

According to Pythagoras' Theorem

(Hyp)² = (Base)² + (Perp)²

m² = 4² + 8²

m² = 16 + 64

m² = 80

Taking square roots on both sides

√m² = √80

m = 8.94

In triangle LMN, <N = 90°

According to Pythagoras' Theorem

(Hyp)² = (Base)² + (Perp)²

(8 + k)² = l² + 4²

Answer:

44ft

Step-by-step explanation:

The formula for circumference is 2 * π * radius and in this case we want to use 3.14 for π and so we do 2 x 3.14 x 7 because the radius is half of the diameter (14) and once you do that you end up getting 43.96 and once you round you get 44ft so you are correct.

ok, let's say Omar invested at 7.5% and Madeline invested at 7.25%, and let's assume a year has 365 days, so daily compounding will have 365 periods in a year.

\(~~~~~~ \stackrel{ \textit{\LARGE Omar} }{\textit{Compound Interest Earned Amount}} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$68000\\ r=rate\to 7.5\%\to \frac{7.5}{100}\dotfill &0.075\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &8 \end{cases}\)

\(A = 68000\left(1+\frac{0.075}{1}\right)^{1\cdot 8} \implies \boxed{A \approx 121276.49} \\\\[-0.35em] ~\dotfill\)

\(~~~~~~ \stackrel{ \textit{\LARGE Madeline} }{\textit{Compound Interest Earned Amount}} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$68000\\ r=rate\to 7.25\%\to \frac{7.25}{100}\dotfill &0.0725\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{daily, thus 365} \end{array}\dotfill &365\\ t=years\dotfill &8 \end{cases}\)

\(A = 68000\left(1+\frac{0.0725}{365}\right)^{365\cdot 8} \implies \boxed{A \approx 121443.62} \\\\[-0.35em] ~\dotfill\\\\ 121443.62~~ - ~~121276.49 ~~ \approx ~~ \text{\LARGE 167}\)

Answer:

Step-by-step explanation:

         Omar: first find 7 1/2 in decimal form .then multiply the decimal 7.5  by the amount invested 68,000. then multiply amount a year in interest 510 by number of years 8 then you get 4,080.

         Madeline: first find 7 1/4 as decimal .then multiply the decimal 7.25 by the amount invested 68,000. then multiply amount a year in interest

Answer:

Step-by-step explanation:

x2 - x - 12

x2 - 4x + 3x - 12

x(x - 4) + 3(x - 4)

(x - 4) (x+ 3)

-4 + 3 will make -1 for -1x

-4 x 3 will make -12

Thus, the factored form will be (x-4)(x+3)

Researchers try to gain insight into the characteristics of a sample population by examining a sample of the population.

A sample is a subset of individuals or units taken from a larger population. Researchers use sampling methods to select a representative group of individuals from the population they are interested in studying. By studying the sample, researchers can make inferences and draw conclusions about the characteristics, behaviors, or trends that may exist within the entire population.

The goal of sampling is to obtain a sample that accurately represents the population in terms of its relevant characteristics. Researchers carefully select their samples to ensure that they are representative and minimize bias. This allows them to generalize the findings from the sample to the larger population with a certain level of confidence.

By examining a sample, researchers can collect data, analyze patterns, and draw conclusions about the population as a whole. This approach is more feasible and practical than attempting to study the entire population, especially when the population is large or geographically dispersed.

Therefore, researchers use samples to gain insight into the characteristics of a population, making option d. "Sample" the correct answer.

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The domain of sin^-1(x) and cos^-1(x) are different while the domain of sin(x) and cos(x) are the same is due to the inverse properties and the range of their respective functions.

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This pyramid has the same base as the prism and its height is three times the height of the prism. What is the ratio of the volume of the

pyramid to the volume of the prism?

1

A} volume of Pyramid

volume of priam

B} volume of pyramid

volume of priuam

C} volume of pyramid

volume of priim

D} Volume of pyramid

volume of

prime

____________________________________________

volume of the prism

The quadratic function is the parent function that best models the given data set. A. quadratic

To determine the parent function, we can use the finite differences method, which involves calculating the differences between consecutive terms in the data set.

We can then repeat this process until we reach a constant difference, indicating a linear relationship, or a constant second difference, indicating a quadratic relationship.

Quantity               Profit

First differences:

225.00-115.50=109.50

395.50-225.00=170.50

627.00-395.50=231.50

919.50-627.00=292.50

Second differences:

170.50-109.50=61

231.50-170.50=61

292.50-231.50=61

The second differences are constant, indicating a quadratic relationship between the quantity and profit. Therefore, the answer is A. quadratic.

The finite differences method involves calculating the differences between consecutive terms in the data set.

In this case, we calculated the first differences by subtracting each profit value from the previous one, and then calculated the second differences by subtracting each first difference from the previous one.

If the second differences are constant, then the relationship between the two variables is quadratic.

Therefore, we can conclude that a quadratic function is the parent function that best models the given data set.

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The probability that 11 or more of these consumers have called an 800 or 900 telephone number for information about some product is approximately 0.326.

The number of successes in a certain number of independent trials that all have the same probability of success are described by the discrete probability distribution known as the binomial probability distribution. The probability of success is constant during all trials, and it is used in statistics to describe situations where there are two alternative outcomes (success or failure).

The binomial probability distribution is given as:

P(X ≥ k) = 1 - P(X < k)

Here, p = 0.60, and the sample size is n = 20.

Thus,

P(X ≥ 11) = 1 - P(X < 11)

= 1 - ∑(20 choose x) (0.6)ˣ (0.4)⁽²⁰⁻ˣ⁾ for x from 0 to 10

P(X ≥ 11) = 0.326

Hence, the probability that 11 or more of these consumers have called an 800 or 900 telephone number for information about some product is approximately 0.326.

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The complete question is:

Answer:

1. 1

2. 5

3. lost 0.8 pounds

Step-by-step explanation:

The least value (or the most she lost) is in week 1

The greatest value (or the most she gained) is in week 5

When you add all the values together, you get:

-4.1 (lost)

3.3 (gained)

3.3 - 4.1 = -0.8

She lost a total of 0.8 pounds

These are your answers

Hope this helps!