Math hw for me pls help

Answer:

TAN is a mathematical function in trigonometry that stands for tangent. It is used to calculate the tangent of an angle in a right triangle, which is defined as the ratio of the length of the opposite side to the length of the adjacent side.

In equations, you can use TAN to find the value of the tangent of an angle. For example, if you have an angle of 30 degrees in a right triangle and you want to find the value of the tangent of that angle, you can use the TAN function in your calculator or programming language.

The syntax of the TAN function is usually "tan(x)", where x is the angle in radians. If your calculator or programming language uses degrees instead of radians, you may need to convert the angle to radians first using the conversion formula: radians = degrees * (pi/180).

For example, to find the value of the tangent of 30 degrees, you can use the TAN function as follows:

In degrees mode: TAN(30) = 0.57735027

In radians mode: TAN(30*pi/180) = 0.57735027

TAN can be used in various trigonometric equations and identities to solve for unknown sides or angles of a right triangle.

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

The parabola minimum is 3

The top quadratic minimum is 2 so

g(x) minimum is greater

Answer:

3r^6

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

The area of the surface generated by revolving the curve y = -2√6, where -√6 ≤ x ≤ 0, about the x-axis is -24π.

To find the area of the surface generated by revolving the curve y = -2√6, where -√6 ≤ x ≤ 0, about the x-axis, we can use the formula for the surface area of a revolution.

The formula for the surface area of a surface generated by revolving a curve y = f(x) about the x-axis over an interval [a, b] is given by the integral:

A = 2π ∫[a,b] y √(1 + (f'(x))²) dx

In this case, the curve is y = -2√6 and the interval is -√6 ≤ x ≤ 0. Let's first calculate f'(x), which is the derivative of -2√6:

f'(x) = 0

Now, we can substitute the values into the surface area formula:

A = 2π ∫[-√6,0] -2√6 √(1 + 0²) dx

Simplifying further:

A = 2π ∫[-√6,0] -2√6 dx

Integrating:

A = -4π √6 [x]_[-√6,0]

Evaluating the limits:

A = -4π √6 (0 - (-√6))

A = -4π √6 (√6)

Finally, simplifying:

A = -4π(6)

A = -24π

Therefore, the area of the surface generated by revolving the curve y = -2√6, where -√6 ≤ x ≤ 0, about the x-axis is -24π.

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Answer:

Follow me please

Mark brainliest

Answer:

50.26 in

Step-by-step explanation:

First you need the circumference of half of a circle.

Circumference = diameter x pi. The radius is 9, so the diameter is 18. 18 * 3.14 = 56.52. But you need half of that, so 56.52 / 2 = 28.26

Then add the other 3 sides

28.26 + 5 + 12 + 5 = 50.26

You would need to wait approximately 51.33 years from now to grow your initial investment of $39,000 to $174,000 at an interest rate of 10% per year.

To calculate the number of periods (years) required to grow an initial investment to a desired future value, we can use the formula for compound interest:

FV = PV * \((1 + r)^n\)

Where:

FV is the future value

PV is the present value (initial investment)

r is the interest rate per period

n is the number of periods

In this case:

PV = $39,000

FV = $174,000

r = 10% per year

Let's calculate the number of periods (years):

FV = PV * \((1 + r)^n\)

174,000 = 39,000 * \((1 + 0.10)^n\)

Divide both sides by 39,000:

4.4615 = \((1.10)^n\)

Take the logarithm of both sides to solve for n:

log(4.4615) = n * log(1.10)

n ≈ log(4.4615) / log(1.10)

n ≈ 2.1270 / 0.0414

n ≈ 51.33 (rounded to two decimal places)

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So the answer here is approximately 95% of housing prices are between a low price of  $143000 and a high price of $171000.

The empirical rule, also known as the three-sigma rule or 68-95-99.7 rule, is a statistical principle that asserts that, with a normal distribution, virtually all observed data will lie within three standard deviations (denoted by ) of the mean or average (denoted by ).

The empirical rule specifically states that 68% of observations will fall inside the first standard deviation, 95% will fall within the first two standard deviations, and 99.7% will fall within the first three standard deviations.

The Empirical Rule indicates that 99.7% of data that are seen to have a normal distribution fall within 3 standard deviations of the mean.

According to this criteria, 68% of the data falls within one standard deviation, 95% within two standard deviations, and 99.7% within  three standard deviations of the mean.

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Answer:

-x² + 5x - 1

Step-by-step explanation:

separate the x², the x, and the constants (numbers without any x).

3x² - 4x² = -x²

2x - -3x = 2x + 3x = 5x

-5 - -4 = -5 + 4 = -1.

we have -x² + 5x - 1

Answer:

7.1242, 8.1, 8.106, 8.16

Step-by-step explanation:

Answer: Jahnay makes 4 cakes bc 120g butter u times by 4 and gets u 360g and u get 4 cakes

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

The correct answer is option A. The assumption that is made so that the pooled variance estimate can be substituted for the population variances within the standard error of the differences formula is that the population variances are homogeneous.

This implies that the variances of the two populations under comparison should be comparable.

For many statistical tests, including the t-test and ANOVA, homogeneity of variance is a crucial presumption. The pooled variance estimate is not a reliable substitute for population variances if the variances of the two populations are not equal.

Consequently, in order to apply the pooled variance estimate in the standard error of the differences formula, the homogeneity of variance assumption is required.

Complete Question:

What  assumption is made so that the pooled variance estimate can be substituted for the population variances within the standard error of the differences formula?

A. The population variances are homogeneous

B. The population variances are heterogeneous

C. The sample sizes are equal

D. The sample sizes are large

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Answer:

1 term-38. ,2nd term-36. ,3rd tern is34

Answer: click point (-4,4)

Step-by-step explanation:

here is the answer for the x and y axis

when in brackets x always comes first and y second

in this case x is -4 and y is 4

x axis goes like this----

y axis goes like this |

Answer:

128°

Step-by-step explanation:

x + 154° + 78° = 360° {being complete turn}

x + 232° = 360°

x = 360° - 232°

x = 128°

someone report this so it will get taken down

Answer:

1.2x + 0.8y = 2.4

x = 5/3

y = 0.5

(please give brain if this helps or is correct)

Step-by-step explanation:

to solve an equation with 2 missing variable we must simplify then solve the equation

step 1: simplify the equation

ex: 1.2x + 0.8y = 2.4   (0.8y = -1.2x + 2.4)

step 2: divide all numbers by 0.8

ex: 0.8y/0.8 = -1.2x/0.8 + 2.4/0.8   (y = -1.5x + 3)

step 3: subtract 3 from both sides of the equation

ex: y - 3 = -1.5x + 3 - 3   (-3y = -1.5x)

step 4: divide both sides of the equation by -3

ex: -3y/-3 = -1.5x/-3   (y = 0.5)

step 5: plug in 0.5 into y then solve the original equation to find x

ex: 1.2x + 0.8(0.5) = 2.4

step 6: multiply 0.8 by 0.5

ex: 1.2x + 0.8(0.5) = 2.4   (1.2x + 0.4 = 2.4)

step 7: subtract 0.4 from each side of the equation

ex: 1.2x + 0.4 - 0.4 = 2.4 - 0.4   (1.2x = 2.0) or (1.2x = 2)

step 8: divide 1.2 from each side of the equation

ex: 1.2x/1.2 = 2/1.2   (x = 5/3)

step 9: input 5/3 into x and keep 0.5 as y then solve to check your answer

ex: 1.2(5/3) + 0.8(0.5) = 2.4

2 + 0.4 = 2.4

2.4 = 2.4 (if both sides of the equation have the same answer like 2.4 = 2.4 then you answer is true)

Answer:

A). Yes

B). Yes

C). No

D). Yes

Step-by-step explanation:

Coordinates of the midpoint of a segment joining two points \((x_1, y_1)\) and \((x_2,y_2)\) are given by \((\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})\).

A). If the points are A(1, 2) and B(3, 4)

    Coordinates of the midpoint M → \((\frac{1+3}{2},\frac{2+4}{2})\)

    M → (2, 3)

    Yes.

B). Extreme points of segment AB are A(0, 8) and B(10, -1)

    Coordinates of the midpoint will be,

    M → \((\frac{0+10}{2}, \frac{8-1}{2})\)

    M → (5, 3.5)

    Yes

C). Extreme points of segment AB are A(-7, -5) and B(6, 4)

    Coordinates of the midpoint will be,

     M → \((\frac{-7+6}{2}, \frac{-5+4}{2})\)

     M → (-0.5, -0.5)

     NO

D). Extreme points of segment AB are A(4, -2) and B(6, -8)

     Coordinates of the midpoint will be,

     M → \((\frac{4+6}{2}, \frac{-2-8}{2})\)

     M → (5, -5)

     Yes

The balance after 12 years with an interest rate of 8.4% compounded monthly on $6500 is $7,046

The Amount after compound interest is calculated by

\(A=P(1+\frac{r}{n})^t\)

where A is the Amount

P is the Principal

r is the Interest rate (in decimals)

n is the frequency at which the interest is compounded per year

t is the Time duration

According to the question,

Principal = $6500

interest rate = 8.4% compound monthly

Since interest is compounded monthly, n = 12

Time duration = 12 years

Therefore, A = \(6500(1+\frac{0.084}{12})^{12}\)

= 6500 (1.007\()^{12\)

= 6500 * 1.084

= $7,046

Hence, the balance is $7,046.

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Answer: 24y+46

Step-by-step explanation:

6(4y+8)-2

=24y+48-2

=24y+46

= 2(12y+23)

Answer: 24y+46

Step-by-step explanation:

multiply 6 by 4y = 24y

multiply 6 by 8 = 48

you have left 24y + 48 - 2
subtract 2 from 48 and get 46

Answer:

Exponential

Step-by-step explanation:

Any function which has a term aˣ where a is a constant is considered an exponential functionhere

A linear function will have a form such as y = mx + b where m and b are constants.

A quadratic function will have the form y = ax² + bx + c where a, b and c are constants

An exponential function will have the form \(y = ka^{mx}\). It may have a constant as the multiplying factor. But \(a\) has to be a constant greater than 0. k and m are also constants

Examples are

y = \(e^x\)  which is the natural exponential function. Value of e is 2.71828....

y = 2ˣ

y = \(5 (3^{2x})\)

The function you provided is of the form \(y = k(a^x)\) with k = 3 and a = 3.5

The positive coefficient of x² in the quadratic equation and the the vertex form of the equation obtained by completing the square indicates that the minimum point is; (-15/16, -353/384)

A quadratic equation is an equation that can be written in the form f(x) = a·x² + b·x + c, where; a ≠ 0, and a, b, and c have constant values.

The quadratic equation can be presented as follows;

y = (2/3)·x² + (5/4)·x - (1/3)

The coefficient of x² is positive, therefore, the parabola has a minimum point.

The quadratic equation can be evaluated using the completing the square method by expressing the equation in the vertex form as follows;

The vertex form is; y = a·(x - h)² + k

Factoring the coefficient of x², we get;

y = (2/3)·(x² + (15/8)·x) - (1/3)

Adding and subtracting (15/16)² inside the bracket to complete the square, we get;

y = (2/3)·(x² + (15/8)·x + (15/16)² - (15/16)²) - (1/3)

y = (2/3)·((x + (15/16))² - (15/16)²) - (1/3)

y = (2/3)·((x + (15/16))² - (2/3)×(15/16)² - (1/3)

y = (2/3)·((x + (15/16))² - 353/384

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Answer:

ok first they give us the equation that is needed to solve the problem

the only thing we need to find is the radius which would be the 4 but that's the whole thing the radius would be 4 and now we plug in our numbers

Step-by-step explanation:

\(\pi\) x \(2^{2}\) x 7≈88

now we apply that same concept to the bottom

\(\pi\) x \(4^{2}\) x 1 ≈ 50

and now we add our 2 totals which is 138

Based on the fact that in the simple random variable, 5 is the sample mean, then it is a d. point estimate.

A point estimate refers to a specific value in a random group of variables that tell us more about the variables.

The mean is therefore a point estimate as it tells us the average value amounts the random sample of 31 observations.

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To access the first element of an array of integers called "numbers," you can use the expression:
numbers[0]`
This expression uses the array name "numbers" and the index "0" to access the first element.

To access the last element of "numbers," assuming it contains 10 elements, use the expression:

`numbers[9]`

Here, we use the index "9" since arrays are zero-indexed, meaning the last element in a 10-element array has an index of 9.
To access the first element of the array called numbers, we would use the expression "numbers[0]."

To access the last element of the array, assuming it contains 10 elements, we would use the expression "numbers [9]" since arrays are zero-indexed in most programming languages.

To access the last element of the array regardless of its length, we can use the expression "numbers [numbers.length-1]," which subtracts 1 from the length of the array to access the last element.
To access the last element, regardless of its length, use the expression:

'numbers [numbers. length - 1]'

This expression uses the "length" property of the array to find the total number of elements and subtracts 1 to get the correct index for the last element.

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The option that is not characteristic of the t-test is "The Student t distribution has mean of t = 0 and a standard deviation of 5 = 1". The correct answer is option A.

The t-test is a statistical test that uses the Student t-distribution. The Student t-distribution has a mean of 0, but its standard deviation is not equal to 1. The standard deviation of the t-distribution varies depending on the degrees of freedom, which is determined by the sample size. Therefore, the statement in option A is not true. The correct answer is option A.

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A. The number of red balls he had was 8  at the beginning.

Duke's starting red ball total can be found by setting up a system of equations. First, let x represent the number of red balls and y represent the number of blue balls.

After 5 days, the equation is x-15=y+10. This equation states that after 5 days, the number of red balls (x) minus 15 will equal the number of blue balls (y) plus 10. After 9 days, the equation is x-27=2y+20.

This equation states that after 9 days, the number of red balls (x) minus 27 will equal twice the number of blue balls (y) plus 20. To solve for x, both equations can be set equal to each other and solved. This results in x=8. Therefore, Duke had 8 red balls at the beginning.

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The probability that all four songs are liked will be 0.03418 and the probability of not liking the next four songs will be 0.99658.

The probability of an event occurring is defined by probability.

Probability is also called chance because if you flip a coin then the probability of coming head and tail is nothing but chances that either head will appear or not.

As per the given,

Total songs = 53

Like songs = 14

Probability of selecting and liking the first song = 14/53

Now since repetition is not allowed and one like the song has been chosen out of 14 thus, the remaining songs = 13, and total songs = 43 - 1 = 52

Probability of selecting liking the second song = 13/52

Probability of selecting liking the third song = 12/51

Probability of selecting liking the fourth song = 11/50

a)

The probability of liking all songs will be 14/53 x 13/52 x 12/51 x 11/50 = 0.03418.

b)

The probability of not liking the next four songs =1 - The probability of liking all songs

The probability of not liking the next four songs = 1 - 0.03418 = 0.96582.

Hence "The probability that all four songs are liked will be 0.03418 and the probability of not liking the next four songs will be 0.99658".

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A. N, B ≥ 0 (non-negativity constraint)

B. The recommended investment portfolio (in dollars) for this client can be found by reading the values in cells A1 and B1.

C.  You can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.

D. You can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.

(a)

The linear programming model to find the best investment strategy for this client can be formulated as follows:

Maximize: 0.09N + 0.08B

Subject to:

N + B ≤ 85 (maximum investment of $85,000)

N ≤ 55 (maximum investment of $55,000 in the internet fund)

6N + 4B ≤ 410 (maximum risk rating of 410 for a moderate investor)

N, B ≥ 0 (non-negativity constraint)

(b)

To solve the problem using Excel Solver, you can set up the following spreadsheet model:

Cell A1: N (amount invested in the internet fund)

Cell B1: B (amount invested in the Blue Chip fund)

Cell C1: =0.09A1 + 0.08B1 (annual return for the portfolio)

Constraints:

Cell A2: ≤ 85

Cell B2: ≤ 85

Cell C2: ≤ 55

Cell D2: ≤ 410

The objective is to maximize the value in cell C1 by changing the values in cells A1 and B1, subject to the constraints.

Using Excel Solver, set the objective to maximize the value in cell C1 by changing the values in cells A1 and B1, subject to the constraints in cells A2, B2, C2, and D2.

The recommended investment portfolio (in dollars) for this client can be found by reading the values in cells A1 and B1.

(b)

For the aggressive investor with a maximum portfolio risk rating of 450, the linear programming model remains the same, except for the constraint on the maximum risk rating.

The new constraint would be: 6N + 4B ≤ 450

Using the same spreadsheet model as before, with the updated constraint, you can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.

(d)

For the conservative investor with a maximum portfolio risk rating of 320, the linear programming model remains the same, except for the constraint on the maximum risk rating.

The new constraint would be: 6N + 4B ≤ 320

Using the same spreadsheet model as before, with the updated constraint, you can solve for the recommended investment portfolio (in dollars) by reading the values in cells A1 and B1.

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Answer:

I am pretty sure you meant 1 hour so the answer is

2

Step-by-step explanation:

Since we want one hour we can multiply 1/4 by 4 to get 1 since we multiplied 1.4 by 4 we need to multiply 1/2 by 4, so we get 2

160.55 is  the difference. i underlined each number i added on each line.

What is an linear equation in math?

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included.

The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."

The two numbers are 15.75 and 176.3

First we will compare the numbers.

1. A=176.3

2. B=15.75

one's place of A is greater than once place of B.

tens place of A is greater than tens place of B.

Hundred place of A is greater than hundred place of B.

So, A>B

So  we will subtract 15.75 from 176.3.

176.30 -15.75=

176.30     ----A

- 1 5.75     ----B

Hundreths place of A - Hundreths place of B =  0-5=10-5=5

Tenth place of A  - Tenth place of B =12-7=5

ones place of A - ones place of B=5-5=0

Tens place of A - Tens place of B =7-1=6

So the solution is 160.55

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