-8(4+7)=-88 SIMPLIFY __=-88 PLEASE HELP

The number of degrees of freedom is 28, the critical values x are approximately ±1.310, and the critical value x2 is approximately 37.652. The confidence interval estimate of σ can be calculated using the given sample size and standard deviation.

To find the number of degrees of freedom, critical values x and x2, and the confidence interval estimate of σ (standard deviation), we have the following information: sample size (n) = 29, sample standard deviation (s) = 65.7, and confidence level = 80%. Since it is mentioned that a simple random sample has been selected from a population with a normal distribution, we can use the t-distribution and the formula for confidence interval estimate of σ to calculate the required values.

The number of degrees of freedom (df) for this problem is equal to the sample size minus 1, which gives us df = 29 - 1 = 28.

To determine the critical values x, we need to find the t-value corresponding to an 80% confidence level with 28 degrees of freedom. Looking up the t-distribution table or using statistical software, we find that the critical values for a two-tailed test at this confidence level are approximately ±1.310.

The critical value x2 represents the chi-square value for a 80% confidence level with 28 degrees of freedom. Referring to the chi-square distribution table, we find that the critical value for a chi-square distribution with 28 degrees of freedom and an 80% confidence level is approximately 37.652.

Finally, to calculate the confidence interval estimate of σ (standard deviation), we use the formula:

CI = (s * √(n - 1)) / √(χ2α/2, n - 1)

Substituting the given values, we have:

CI = (65.7 * √(29 - 1)) / √(37.652/2, 29 - 1)

Evaluating this expression, we can calculate the confidence interval estimate of σ.

In summary, the number of degrees of freedom is 28, the critical values x are approximately ±1.310, and the critical value x2 is approximately 37.652. The confidence interval estimate of σ can be calculated using the given sample size and standard deviation.

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Answer:

a.) tanL= 0.533

b.) sinN= 0.882

c.) cosN= 0.471

Step-by-step explanation:

Triangle ABC is similar to Triangle LMN, which means that their corresponding angles are congruents.

Using SOH-CAH-TOA we have,

tanL~tanA= 8/15 = 0.533

sinN~sinC= 15/17 = 0.882

cosN~cosC= 8/17 = 0.471

In math, protractors are essential tools for measuring and determining vertical and adjacent angles.

In the study of geometry, angles play a fundamental role, and accurately measuring them is crucial for solving various mathematical problems. When it comes to vertical and adjacent angles, a key tool used by both students and professionals is the protractor. A protractor is a DIY (do-it-yourself) tool that allows for precise angle measurement and identification.

With a protractor, one can easily determine the size of vertical angles, which are formed by intersecting lines or rays that share the same vertex but point in opposite directions. These angles have equal measures. Similarly, adjacent angles are formed when two angles share a common side and a common vertex but do not overlap. By using a protractor, one can measure the individual angles and determine their relationship to each other.

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As per the addition formula, the value of the trigonometric function is -0.809.

In statistics, function is defined as a relationship between inputs where each input is related to exactly one output.

Here we have to find the value of the trigonometric function cos(13/15)cos(-/5)-sin(13/15)sin(-/5)  by using the addition and subtraction formula.

Here we have the following trigonometric function:

=> cos(13/15)cos(-/5)-sin(13/15)sin(-/5)

Now, we have to use the trigonometric addition formula,

=> Cos (A+B) = Cos A Cos B - Sin A Sin B

To solve the given function,

Here let us rewrite the given function based on the addition formula, then we get,

=> Cos ( 13π/15 + (-π/5) )

=> Cos( 12π/5)

=> Cos(144°)

=> -0.809

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A blue token is worth 15 points and a yellow token is worth 5 points.

Two or more expressions with an Equal sign is called as Equation.

Let b  represent the point value of a blue token and

y represent the point value of a yellow token.

We can set up two equations:

4b + 7y = 95 (Jillian's score)

4b + 3y = 75 (Jacob's score)

Subtracting the second equation from the first, we get:

4b + 7y - (4b + 3y) = 95 - 75

Simplifying this, we get:

4y = 20

Dividing both sides by 4, we get:

y = 5

So a yellow token is worth 5 points.

Now we can substitute this value of "y" into one of the original equations and solve for "b".

4b + 7y = 95

4b + 7(5) = 95

4b + 35 = 95

4b = 60

b = 15

So a blue token is worth 15 points.

Therefore, a blue token is worth 15 points and a yellow token is worth 5 points.

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Answer: 257

257 in delta math

Step-by-step explanation:

After 7 years, Riley would $441.5 more have in her account than Ryan.

Compound interest is the interest calculated on the principal and the interest accumulated over the previous period.

Given that Riley invested $5,100 in an account paying an interest rate of \(7\tfrac{3}{4}\)% compounded quarterly. Ryan invested $5,100 in an account paying an interest rate of \(7\tfrac{1}{4}\) % compounded daily, we need to find that after 7 years how much more money would Riley have in her account than Ryan,

\(A = P(1+r/n)^{nt\)

Where A = amount

P = principal

r = rate

n = number of times the amount is compounded and t = time

Riley = compounded quarterly,

\(A = P (1 + r / 4)^{4t\)

\(A = 5100(1+0.019375)^{4(7)}\\\\A = 5100(1.019375)^{28}\\\\\\\)

\(A = 8728.13\)

Therefore, in 7 years Riley has $8728.13.

Ryan = compounded daily,

\(A = P (1 + r / 365)^{365t\)

\(A = 5100(1 + 0.00019)^{356(7)}\\\\A = 5100(1.00019)^{2555}\\\\A = 8286.64\)

Therefore, in 7 years Ryan has $8286.64.

Riley will have $441.5 more.

Hence after 7 years, Riley would $441.5 more have in her account than Ryan.

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Answer:

16A. 42 cm

16B. 7 cm  

Step-by-step explanation:

Answer:

true

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

The value of function f (x) at x = 3 is,

⇒ f (3) = 4

A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

Given that;

The function is,

⇒ f (x) = 1  ; x < 1

          = x + 1 ; x > 1

Hence, The value of function at x = 3 is defined as;

⇒ f (x) = x + 1 ; x > 1

Put x = 3;

⇒ f (3) = 3 + 1

⇒ f (3) = 4

Thus, The value of function f (x) at x = 3 is,

⇒ f (3) = 4

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Answer:

169.2 is 132.1875% of 128

Step-by-step explanation:

Answer:

Lauren's percent error = 13.95% Approx

Step-by-step explanation:

Given:

Number of photos predict = 129

Number of photos actual = 111

Find:

Lauren's percent error

Computation:

Lauren's percent error = [(Number of photos predict - Number of photos actual)/(Number of photos predict)]100

Lauren's percent error = [(129 - 111)/129]100

Lauren's percent error = [(129 - 111)/129]100

Lauren's percent error = [(18)/129]100

Lauren's percent error = 13.95% Approx

The standard form of the equation of the hyperbola with foci at (±5, 0) and asymptotes y = ±4/3x is (x^2 / 9) - (y^2 / 16) = 1.

To find the standard form of the equation of a hyperbola, we need to determine the distances and slopes associated with its foci and asymptotes.

The foci of the hyperbola are given as (±5, 0). The distance between the center (origin) and each focus is denoted by c. In this case, c = 5.

The asymptotes of the hyperbola are represented by the equations y = ±(a / b)x, where a and b are the lengths of the transverse and conjugate axes, respectively. The slopes of the asymptotes are given as ±4/3.

From the given information, we can determine the values of a and b. The distance between the center and each vertex is a, and since the transverse axis is horizontal, a = 5.

Using the relationship a^2 + b^2 = c^2, we can find b: (5^2) + b^2 = (5^2) + (4/3)^2. Solving this equation gives b = 4.

Finally, we can write the standard form of the equation of the hyperbola as (x^2 / a^2) - (y^2 / b^2) = 1. Substituting the values of a and b, we obtain (x^2 / 9) - (y^2 / 16) = 1.

Therefore, the standard form of the equation of the hyperbola is (x^2 / 9) - (y^2 / 16) = 1.

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The percentage that each expense has out of the total budgeted amount of $45,000  have been computed, where insurance has 8.00%, Utilities 7.00% and so on.

What is a percentage?

In this case, percentage refers to proportion of each expense from the total budgeted expense of $45,000, which means that in order to total budgeted expense of $45,000, which means that in order to compute the percentage of total budgeted for each expense category, we divide the expense by the total budgeted expense

Insurance=$3600/$45,000=8.00%

Utilities=$3150/$45,000=7.00%

Clothing=$2700/$45000=6.00%

Transportation=$1350/$45000=3.00%

Entertainment=$5400/$45000=12.00%

Savings=$4050/$45000=9.00%

Taxes=$7200/$45000=16.00%

Food=$7650/$45000=17.00%

Housing=$9900/$45000=22.00%

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Answer:

Your answer will be 15 I think

The coordinates of V' in (T <3, -2> · D5) (TUV) if T(-1, -1), U(-1, 2), and V (2, 1) is <2, -3>.

Given that T(-1, -1), U(-1, 2), and V(2, 1) and we are asked to find the coordinates of V' in (T <3, -2> · D5) (TUV).

Solution:

Given that T(-1, -1), U(-1, 2), and V(2, 1)

As we know the formula of projection of a vector V on vector U is given by the formula,

Projection of V on U = [(V. U) / (U. U)] U

Let's calculate U vector as:

U = U - TU = (-1, 2) - (-1, -1)

U = (-1, 2) + (1, 1)

U = (0, 3)

Now let's calculate V'V' = (T <3, -2> · D5) (TUV)

V' = (-1, -1) <3, -2> · (2, 1) * (0, 3) + (-1, 2) <3, -2> · (2, 1) * (2, 1) + (2, 1) <3, -2> · (-1, -1)

V' = (-1, -1) <3 * 2 + (-2 * 1), 3 * 1 + (-2 * 2)> * (0, 3) + (-1, 2) <3 * 2 + (-2 * 1), 3 * 1 + (-2 * 2)> * (2, 1) + (2, 1) <3 * (-1) + (-2 * (-1)), 3 * (-1) + (-2 * (-1))>

V' = (-1, -1) <4, -3> * (0, 3) + (-1, 2) <4, -3> * (2, 1) + (2, 1) <1, -1>

V' = (-1, -1) <12, -9> + (-1, 2) <5, -6> + (2, 1) <1, -1>

V' = (-1, -1) <0, 3> + (-5, 6) + (2, 1) <-1, -1>

V' = <(-1*0) + (-1*-1) + (-1*-1), (-1*3) + (-1*1) + (-1*-1)>

V' = <2, -3>

Therefore the coordinates of V' in (T <3, -2> · D5) (TUV) if T(-1, -1), U(-1, 2), and V (2, 1) is <2, -3>.

Hence, the required answer is <2, -3>.

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Step-by-step explanation:

so the shape gonna be soo long that I wasted yo ur time

Answer:

\(\frac{17}{25}\)

Step-by-step explanation:

So because it is a repeating decimal we have to round it off first. We can round it to the nearest hundredth making it 0.68. This then becomes \(\frac{68}{100}\) as a fraction which can be reduced to its lowest terms by dividing both the numerator and denominator by 4 and then it becomes \(\frac{17}{25}\).

HOPE THIS HELPED

Answer:

1 9/10 = 1.9

Step-by-step explanation:

= 2 3/8 = 19/8

= 1 1/4 = 5/4

So

=19/8/5/4

=19/8 x 4/5

By simplification

=19/10=1 9/10=1.9

Answer:

Domain is all real numbers, x ≠ -5

Range is all real numbers, y ≠ 0

Step-by-step explanation:

the integrals.

1.6 (7) dx x+1 R 2. cos3x cos cos3x cos4x dx 3. f- 4xvx²-16 ,The value of the integral is 43/2.2.

to evaluate the given integrals, let's go through each one step by step:

1. ∫[6,7] (x+1) dx   applying the power rule of integration, we have:

  ∫[6,7] (x+1) dx = [(x²)/2 + x] |[6,7]   evaluating the integral at the limits:

  = [(7²)/2 + 7] - [(6²)/2 + 6]   = (49/2 + 7) - (36/2 + 6)

  = 67/2 - 24/2   = 43/2 ∫ cos³(x) * cos(cos³(x)) * cos(4x) dx   unfortunately, this integral does not have a simple closed-form solution. it involves the composition of trigonometric functions, which makes it challenging to evaluate analytically. numerical integration methods, such as numerical approximation techniques or computer algorithms, can be used to estimate the value of this integral.

3. ∫(f⁻¹(4x)) * (v(x²-16)) dx

  it seems that there is some missing information or clarification needed regarding this integral. the notation f- likely indicates the inverse of a function f, but without knowing the specific function or the context of the problem, it is not possible to evaluate this integral. if you can provide more information or clarify the expression, i would be happy to assist you further.

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Answer:

12

Step-by-step explanation:

because you can see that in the first column, the y value is 4 times the x value

and in the third column, the y value is still 4 times greater than the x value

meaning that you need to find a number that is 4 times the value of 3 (because that is the x value)

3 times 4 is 12

The figure's area is calculated by subtracting the entire rectangle from the empty rectangle.

The area of a rectangle in a two-dimensional plane is the space that it occupies. A rectangle is a quadrilateral, a kind of two-dimensional object with four sides and four vertices. The rectangle's four sides are all right angles or exactly 90 degrees. The rectangle's opposing edges are equal and parallel to one another. It should be observed that a parallelogram also has equal and parallel opposite sides, but the angles are not exactly 90 degrees.

The following is the solution for the figure's area:

9 (x+3) - 6x.

The entire figure's area has been described as 9 (x+3).

where 9 is the length of the rectangle and (x+3) = (x+1.5+1.5) is the width of the rectangle.

Currently, the empty space between has been assigned the value 6x.

where the rectangle's edges are 6 and x.

Therefore, the size of the figure is the entire rectangle less the empty rectangle.

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The complete question is:

Look at the figure at the right. Explain one thing that representing the area of the figure as 9(X+3)-6x tells you about the situation. Then write an equivalent expression for the area. Explain what information is in your expression that is not in 9(x+3)-6x.

Answer:

42.395

Step-by-step explanation:

Since each trait is inherited independently, we can multiply the probabilities together. The probability of obtaining A/a; B/b; C/c; D/d offspring is (1/2) * (1/2) * (1/2) * (1/2) = 1/16.

The probability of obtaining A/a; B/b; C/c; D/d offspring can be calculated by multiplying the probabilities of each individual trait. Since each trait is inherited independently, we can multiply the probabilities together.

The probability of obtaining A/a offspring is 1/2 (A is dominant and a is recessive).

The probability of obtaining B/b offspring is 1/2 (B is dominant and b is recessive).

The probability of obtaining C/c offspring is 1/2 (C is dominant and c is recessive).

The probability of obtaining D/d offspring is 1/2 (D is dominant and d is recessive).

Therefore, the probability of obtaining A/a; B/b; C/c; D/d offspring is (1/2) * (1/2) * (1/2) * (1/2) = 1/16.

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Answer:

use cymath.

Step-by-step explanation:

Answer:

$235

Step-by-step explanation:

3525/15 is the exchange rate which equals $235

"f " is continuous at x = 0.

a) To determine if f is continuous from the left at x = 0, we need to evaluate the limit of f(x) as x approaches 0 from the left. This means we need to use the first piece of the function, x + sin x, since this is the piece that applies when x < 0:

lim(x->0-) f(x) = lim(x->0-) (x + sin x) = 0 + sin 0 = 0

Since the limit exists and is equal to the value of the function at x = 0 (which is 2), f is continuous from the left at x = 0.

b) To determine if f is continuous from the right at x = 0, we need to evaluate the limit of f(x) as x approaches 0 from the right. This means we need to use the third piece of the function, 2/(1+x^2), since this is the piece that applies when x > 0:

lim(x->0+) f(x) = lim(x->0+) (2/(1+x^2)) = 2/(1+0^2) = 2

Since the limit exists and is equal to the value of the function at x = 0 (which is 2), f is continuous from the right at x = 0.

c) To determine if f is continuous at x = 0, we need to make sure that the limits from the left and right both exist and are equal to each other and to the value of the function at x = 0. We already found that the limits from the left and right are both equal to 2, which is also the value of the function at x = 0. Therefore, f is continuous at x = 0.

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The cardinality of the cartesian product of A and B is 18.

Cartesian Product of two sets A and B is defined as the set of all ordered pairs (a,b) where a∈A & b∈B.

Cardinality of a set is defined as the number of elements in that particular set.

For example,  for a set A={2,6,4} , the cardinality is 3.

Given set A= { x | x is a prime number less than 7}

A={2,3,5}

set B =  { y | y is perfect square of an integer and y is less than 29}

B={0,1,4,9,16,25}

The cartesian product of A and B denoted by AxB will be

AxB={(2,0),(2,1),(2,4),(2,9),(2,16),(2,25),(3,0),(3,1),(3,4),(3,9),(3,16),(3,25),(5,0),(5,1),(5,4),(5,9),(5,16),(5,25)}

The number of elements in AxB is 18.

Therefore , the cardinality of the cartesian product of A and B is 18.

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Answer:

Substitute (–5, 0.5) into x – 4y = –7 to get  

✔ –5 – 4(0.5) = –7

.

Substitute (–5, 0.5) into 0.2x + 2y = 0 to get  

✔ 0.2(–5) + 2(0.5) = 0

.

Simplify the above equations to get  

✔ –7 = –7 is true and 0 = 0 is true; a solution.

Step-by-step explanation:

(–5, 0.5) a solution of the system of equations.

A system of equations is a set or collection of equations that you deal with all together at once.

Given are the equations, x – 4y = –7 and 0.2x + 2y = 0;

Substitute (–5, 0.5) into x – 4y = –7 to get  

–5 – 4(0.5) = –7

Substitute (–5, 0.5) into 0.2x + 2y = 0 to get  

0.2(–5) + 2(0.5) = 0

Simplify the above equations to get  

–7 = –7 and 0 = 0 is true

Hence, (–5, 0.5) a solution of the system of equations.

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Answer:

3g+2

$26