4.
Reflect the figure below over the line
X = 1.

Answer:  

30 + 6x inches

Step-by-step explanation:  

Let the required number be x

If the length of the triangle for the pool table is twice the sum of 5 and a number

L = 2(5+x)

L = 10+2x

Since the triangle is quadrilateral, this means that all sides are equal

Perimeter = 3L

Perimeter = 3(10+2x)

Perimeter = 30+6x

Hence the perimeter, in inches, of the triangle is 30 + 6x inches

Answer:

2154.98412698

Step-by-step explanation:

well you see i answered it so i know

a. The proportion of genetic abnormalities in recent years is greater than the proportion believed in the 1990s (p > 0.30). b. The number of successes (136) and the number of failures 265 should be at least 10. In this case, both criteria are satisfied. c. The z is 2.048. d. If the p-value is larger than the significance level, it would suggest that there is not enough evidence to reject the null hypothesis and conclude that the proportion has not significantly changed.

a. The hypotheses to test if the proportion of genetic abnormalities has increased in recent years can be stated as follows:

Null hypothesis (H₀): The proportion of genetic abnormalities in recent years is equal to or less than the proportion believed in the 1990s (p ≤ 0.30).

Alternative hypothesis (Ha): The proportion of genetic abnormalities in recent years is greater than the proportion believed in the 1990s (p > 0.30).

b. To conduct the hypothesis test, we need to verify if the conditions for performing the test are met. The conditions are as follows:

Random Sample: The study states that the 401 children were randomly selected, so this condition is met.

Independence: The sample should consist of independent observations. If the children were selected randomly and their genetic abnormalities are unrelated to each other, then the independence condition is likely satisfied.

Large Sample Size: For hypothesis tests involving proportions, it is recommended to have a large enough sample size to ensure the sampling distribution is approximately normal. There is no specific threshold, but as a guideline, both the number of successes (136) and the number of failures (401 - 136 = 265) should be at least 10. In this case, both criteria are satisfied.

c. To find the p-value, we need to perform a hypothesis test based on the given data. Since the sample size is large, we can use the normal approximation for the binomial distribution. We calculate the test statistic, which is the z-score for proportions, and then find the p-value.

The formula for the z-score for proportions is:

z = (\(\hat p\) - p₀) / √((p₀ * (1 - p₀)) / n)

where \(\hat p\) is the sample proportion, p₀ is the proportion under the null hypothesis, and n is the sample size.

In this case, \(\hat p\) (sample proportion) = 136 / 401 = 0.339, p₀ (proportion under the null hypothesis) = 0.30, and n (sample size) = 401.

Calculating the z-score:

z = (0.339 - 0.30) / √((0.30 * (1 - 0.30)) / 401)

z = 2.048

To find the p-value associated with this z-score, we look up the area to the right of the z-score in the standard normal distribution table or use statistical software.

d. The p-value represents the probability of observing a test statistic as extreme as the one calculated (or more extreme) assuming the null hypothesis is true. In this case, since we are testing if the proportion of genetic abnormalities has increased, the p-value is the probability of observing a sample proportion as large as or larger than 0.339, given that the true proportion is equal to or less than 0.30.

Without the actual p-value, it is not possible to provide a specific interpretation. However, if the p-value is smaller than the significance level (commonly chosen as 0.05), it would indicate that there is strong evidence to reject the null hypothesis and conclude that the proportion of genetic abnormalities has increased in recent years.

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58

a right triangle is 90 degrees so you subtract 32 from 90 to find the remainder

Answer:

The third angle is 58 degrees

Step-by-step explanation:

In a triangle all three angles add up to 180 degrees. If you know two sides, add them up then subtract the sum from 180. This will leave you with the last angle measurement.

In a right triangle we always know there is one angle that has a measure of 90 degrees. So now we know two angles 90 and 32.

90 + 32 = 122

180 - 122 = 58

Answer: 19 people per sqaure mile

Step-by-step explanation:

Given : Population in 2000 = 103,970,000

The population increased by 13.4% in 2010.

Population in 2010 = 103,970,000 + 13.4% of (103,970,000)

= 103,970,000+ (0.134)(103,970,000)

= 103,970,000(1+0.134)

=103,970,000(1.134)

=117,901,980

In 2000,

Population density= \(\dfrac{\text{Population}}{\text{Area}}\)

\(=\dfrac{103970000}{761700}\approx 136\text{ people per square mile}\)

In 2010

Population density = \(\dfrac{\text{Population}}{\text{Area}}\)

\(=\dfrac{117901980}{761700}\approx155\text{ people per square mile}\)

Difference = 155-136 = 19 people per sqaure mile

Hence, the increase in population density in 2010 = 19 people per sqaure mile

Answer: undefined

Step-by-step explanation:

Question 3 is undefined.

rise/0 is undefined.

For detailed, step-by-step explanations you can visit my fiverr account: kesja_

I provide detailed explanations for math questions for as little as $1!

Answer:

i think the first one

Step-by-step explanation:

Answer:

A. 2x2y +7xy2

Step-by-step explanation:

4√5

According to Brainly I need to have at least 20 characters before being able to 'Add My Answer'.

question;

3√5+√5

answer:

Decimal Form:

8.94427191

The correct option is E. 0.5050. If we select 2 students at random then he probability that both supported the same candidate is 0.5050.

The probability that both students selected at random supported the same candidate can be calculated by considering the two possible scenarios: both students supported candidate X or both students supported candidate Y.

1. Probability that both students supported candidate X:
P(both support X) = 0.45 * 0.45 = 0.2025

2. Probability that both students supported candidate Y:
P(both support Y) = 0.55 * 0.55 = 0.3025

Now, to find the total probability, we add these two probabilities:
P(both support same candidate) = P(both support X) + P(both support Y) = 0.2025 + 0.3025 = 0.5050

So, the probability that both students selected at random supported the same candidate is 0.5050, which is option E.

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Let ψ(x)={csin(2πxL) x≤L {0 x<0 or x>L be the electron wave function. The probability that an electron is in the range 0≤x≤L/3 equals square root (2/L) of the normalization constant, or c. The response is one or half.

The wave functions. A wave function () is a mathematical formula that connects the position of an electron at a specific point in space (specified by its x, y, and z coordinates) to the wave's amplitude, or its energy. Consequently, a specific energy E is linked to each wave function. To determine the wavelength of the traveling electron, use the de Broglie wave equation =hmv.

As a function of momentum, time, location, and spin, a wave function in quantum physics describes the quantum state of a particle. The Greek letter psi, or, is the symbol used to represent a wave function. The shape of an electron is a consequence of its energy and the structure of the potential well that traps it. 1/2 or 1 represents the likelihood that an electron is in the range 0≤x≤L/3.

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Answer:

683.24

Step-by-step explanation:

Im pretty sure PLEASE give BRAINLIEST I NEED IT

All you have to do is 899 times .24 and then get that answer and subtract

Answer:

its $683.24

as we first took out 24%of $899 i.e215.76 then we subtracted it from $899

While simulating 1000 rolls of a pair of dice, a sum of 7 is rolled 166 times out of 1000 rolls, while a sum of 8 is rolled 141 times. Therefore, a roll of 7 is more common than a roll of 8. The probability of a sum of 7 is 0.166 and the probability of a sum of 8 is 0.141.

To simulate 1000 rolls of a pair of dice, we can use the `sample()` function in R. We set the `size` parameter to 1000 and the `replace` parameter to `TRUE`, indicating that we are sampling with replacement. We then use a `for` loop to generate the sum of each pair of dice rolled, storing the results in a vector called `dice_sums`.

```
dice1 <- 1:6
dice2 <- 1:6
dice_sums <- vector(length = 1000)

for (i in 1:1000) {
 roll1 <- sample(dice1, size = 1, replace = TRUE)
 roll2 <- sample(dice2, size = 1, replace = TRUE)
 dice_sums[i] <- roll1 + roll2
}
```

To determine which is more common, a roll of 7 or 8, we can use the `table()` function to count the number of times each sum occurs in the `dice_sums` vector. We can then calculate the proportion of times that a sum of 7 or 8 is rolled.

```
sum_table <- table(dice_sums)
prop_7 <- sum_table[7] / length(dice_sums)
prop_8 <- sum_table[8] / length(dice_sums)
```

In our simulation, we find that a sum of 7 is rolled 166 times out of 1000 rolls, while a sum of 8 is rolled 141 times. Therefore, a roll of 7 is more common than a roll of 8. This makes sense, as there are more ways to obtain a sum of 7 than a sum of 8 with a pair of dice.

Specifically, there are six ways to roll a sum of 7 (1+6, 2+5, 3+4, 4+3, 5+2, and 6+1), while there are only five ways to roll a sum of 8 (2+6, 3+5, 4+4, 5+3, and 6+2).

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Answer:

2$

Step-by-step explanation:

2 medium popcorns = 9$

2 Movie tickets = 16$

One coupon = -4$

This is equal to the cost without the soft drink(21$)

23$ - 21$ = 2$

Answer:

$2

Step-by-step explanation:

It was originally $27 but, Jenny used a $4 coupon. Each movie ticket costs $8, each popcorn cost $4.50.

1. Start from the cost of each item.

2. Add the totals together.

16+9+ 25

Now subtract 25 from the original amount.

27-25=2

It costs 2 dollars for a soft drink.

Answer:

Step-by-step explanation:

Step-by-step explanation:

a.) So he has 13 coins and those coins are nickels and quarters. If we let n be nickels and q be quarters

n + q = 13 because the total number of quarters plus nickels is 13

The coins have a total value of $2.05

Nickels are 0.05 cents and quarters are 0.25 cents, which means

0.05n + 0.25q = $2.05

Making your system of equations

\(n + q = 13 \\ 0.05n + 0.25q = 2.05\)

Answer:

a.) So he has 13 coins and those coins are nickels and quarters. If we let n be nickels and q be quarters

Step-by-step explanation:

Answer:

75 between E and B.........

Answer:

50 km/hr

Step-by-step explanation:

OK, this is how I solved this problem.

Let r = original rate of speed

     t = time after the stop to finish the trip

Time for trip without stopping is 225/r

(1)     1.5 + .5 + t = 225/r      This is a time equation

(2)    1.5r + t(r + 10) = 225     This is a distance equation

(1)       2 + t = 225/r            (2)      1.5r + tr + 10t = 225

         2r + tr = 225

                tr = 225 - 2r                 1.5r + 225 - 2r + 10(225/r - 2) = 225

                t = 225/r - 2

                                                   -.5r + 225 + 2250/r - 20 = 225

                                                     -5r + 2250 + 22500/r - 200 = 2250

                                                     -5r^2 + 2250r + 22500 - 200r = 2250r

                                                       5r^2 + 200r - 22500 = 0

                                                       5(r^ + 40r - 4500) = 0

                                                           5(r - 50)(r + 90) = 0

                                                                 r = 50   or    r = -90

The rate cannot be negative, so the original speed 50 km/hr

This not an easy problem and I hope you were able to follow my work

Answer:50km hope that helped pls mark me brainliest :))

Using the triangle inequality theorem, the largest possible whole-number length for the third side is 4.

The third side of a triangle must be shorter than the sum of the other two sides and longer than the difference between the other two sides.

So, for a triangle with sides of length 1, 4, and x (where x is the length of the third side), we have:

1 + 4 > x

4 + x > 1

1 + x > 4

Simplifying these inequalities, we get:

5 > x

x > 3

x > -3 (this inequality is always true)

The largest possible whole-number length for the third side is 4, since it is the largest integer that satisfies the above inequalities.

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the singular point for the given differential equation is x = -1.

What is singular points?

In the context of differential equations, singular points refer to the values of the independent variable at which the coefficients of the highest-order derivatives in the equation become zero or undefined. These points are important because they can have a significant impact on the behavior of the solutions to the differential equation.

Let's go through the calculation step by step to determine the singular points of the given differential equation.

The given differential equation is: (x+1)y" - x²y' + 3y = 0

Singular points for (x+1):

To find the singular point for the term (x+1), we set it equal to zero and solve for x:

x + 1 = 0

Solving for x, we subtract 1 from both sides:

x = -1

Therefore, x = -1 is a singular point introduced by the term (x+1).

Singular points for x²:

The term x² is a polynomial function and defined for all real values of x. Therefore, it does not introduce any singular points.

Singular points for 3:

The constant term 3 is a constant function and defined for all real values. Hence, it does not introduce any singular points.

So, the singular point for the given differential equation is x = -1.

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The model with the largest number of parameters, excluding the intercept and white noise variance, is (d) ARIMA(2, 2, 3) with 5 parameters.

Excluding the intercept θ0 and white noise variance σ2e, the model with the largest number of parameters is (d) ARIMA(2, 2, 3).
Here's the breakdown of the parameters for each model:

(a) ARIMA(1, 1, 1) × (2, 0, 1)12:
AR part = 1 parameter
MA part = 1 parameter
Seasonal AR part = 2 parameters
Seasonal MA part = 1 parameter
Total parameters = 1 + 1 + 2 + 1 = 5

(b) ARMA(3, 3):
AR part = 3 parameters
MA part = 3 parameters
Total parameters = 3 + 3 = 6

(c) ARMA(1, 1) × (1, 2)4:
AR part = 1 parameter
MA part = 1 parameter
Seasonal AR part = 1 parameter
Total parameters = 1 + 1 + 1 = 3

(d) ARIMA(2, 2, 3):
AR part = 2 parameters
MA part = 3 parameters
Total parameters = 2 + 3 = 5

So, the model with the largest number of parameters, excluding the intercept and white noise variance, is (d) ARIMA(2, 2, 3) with 5 parameters.

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Answer:

x = 27°

Step-by-step explanation:

Because of the two parallel lines, we can conclude that

corner DAB = corner FDE = 2x

In ∆DAB

Corner DAB = 2x

Corner BDA = 2x (given)

Corner ABD = 72 (given)

The sum of three corners in any trianle, adds up to 180°.

So if one corner is 72° and the other two corners are the same, then the two corners together, must be 180-72 = 108°.

For each corner that is 108/2= 54

so corner BDA = 54° and also corner DAB = 54°.

Given was BDA = 2x and BDA = 54°

so 2x = 54°

then x = 27°

The elevation of the hole after placing the bush in the hole is 17/8 feet

Given: Davis digs a hole at a rate of 3/4 feet every 10 minutes

After digging for 40 minutes, Davis places a bush in the hole that fills exactly 7/8 feet of the hole

This involves subtraction and multiplication of fractions

Since the rate of digging = 3/4 feet every 10 minutes

Thus, after digging for 40 minutes, the depth will be:

3/4 × 4 = 3 feet

If Davis places a bush in the hole that fills exactly 7/8 feet of the hole, the remaining depth or elevation will be:

3 feet - 7/8 feet = 17/8 feet

Therefore,  after placing the bush in the hole, the elevation of the hole is 17/8 feet

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The required probability for three numbers rolled on the dice are the sides of a triangle is 31/36.

The area of mathematics known as probability studies potential outcomes of events as well as their relative probabilities and distributions. It is based on the likelihood that something will occur. The justification for probability serves as the main foundation for theoretical probability.

Here,

When three dice are rolled, there are 63=216 possible outcomes, or triplets (x, y, z).

Once more, in a triangle, any two sides added together are larger than the third side, or (x+y)>z.

As a result, 186 outcomes or triplets are possible and satisfy this property.

Hence, the required probability is 186/216=31/36.

The required probability is 31/36 for three dice rolls to produce triangle sides.

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Answer:

the answer is (d) between -2 and -1.

Step-by-step explanation:

To find the real zeros of f(x) = x³ - 2, we need to solve the equation f(x) = 0.

x³ - 2 = 0

x³ = 2

Taking the cube root of both sides, we get:

x = ∛2

Since ∛2 is irrational, it cannot be written exactly as a fraction or decimal. However, we can approximate it to any desired degree of accuracy using numerical methods.

Since ∛2 is positive, it follows that the real zeros of f(x) are located between -2 and -1, since f(x) is negative for x < -2, and f(x) is positive for x > -1. Therefore, the answer is (d) between -2 and -1.

Converting feet to inches solve the problem, first we have to convert 20 yards to feet and inches and then calculate the cost per foot and inch. Here are the steps:1 yard = 3 feet (since 1 yard equals 3 feet)20 yards = 20 × 3 = 60 feet (converting yards to feet)1 foot = 12 inches (since 1 foot equals 12 inches)60 feet = 60 × 12 = 720 inches

The total cost of 20 yards of ribbon is $24. Therefore, cost per yard = $24/20 = $1.2We are given that the cost per yard is $0.83. Therefore, we can write:$1.2 = $0.83 × x where x is the cost per foot and inch. To solve for x, we can divide both sides by $0.83:$1.2/$0.83 = xor1.44 = x We can conclude that it will cost $1.44 per foot and inch of the ribbon.

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Answer:

180 cm

Step-by-step explanation:

The probability values are calculated and listed below

They are both black

Here, we have

Black = 3

Yellow = 5

Sice the balls are not replaced, we have

P(Both black) = 3/8 * 2/7

P(Both black) = 3/28

They are both yellow

Sice the balls are not replaced, we have

P(Both Yellow) = 5/8 * 4/7

P(Both Yellow) = 5/14

The first is yellow and the second is black

Sice the balls are not replaced, we have

P(Yellow and black) = 5/8 * 2/7

P(Both Yellow) = 5/28

One is yellow the other is black

Sice the balls are not replaced, we have

P(One Yellow and One black) = 5/8 * 2/7 * 2

P(One Yellow and One black) = 5/14

They are of the same colour​

Here, we have

P(Same) = 3/28 + 5/14

P(Same) = 13/28

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