Two angles are called complementary when their measures add to 90 degrees. Two angles are called supplementary when their measures add up to 180 degrees.

the null hypothesis for the given t-test\(`[h, p, 0] = ttest(morningsections, eveningsection)`\)

In the t-test formula for hypothesis testing, the null hypothesis states that there is no difference between the two groups being tested. Therefore, for the given t-test below:

`[h, p, 0] = ttest(morningsections, eveningsection)`,

the null hypothesis is that there is no significant difference between the average bedtimes of students in morning sections versus evening sections.

To explain further, a t-test is a type of statistical test used to determine if there is a significant difference between the means of two groups. The formula for a t-test takes into account the sample size, means, and standard deviations of the two groups being tested. It then calculates a t-score, which is compared to a critical value in order to determine if the difference between the two groups is statistically significant.

In this case, the two groups being tested are morning sections and evening sections, and the variable being measured is the average bedtime of students in each group. The null hypothesis assumes that there is no significant difference between the two groups, meaning that the average bedtime of students in morning sections is not significantly different from the average bedtime of students in evening sections.

The alternative hypothesis, in this case, would be that there is a significant difference between the two groups, meaning that the average bedtime of students in morning sections is significantly different from the average bedtime of students in evening sections. This would be reflected in the t-score obtained from the t-test, which would be compared to the critical value to determine if the null hypothesis can be rejected or not.

In conclusion, the null hypothesis for the given t-test\(`[h, p, 0] = ttest(morningsections, eveningsection)`\) is that there is no significant difference between the average bedtimes of students in morning sections versus evening sections.

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After using proportion method 325 calories will she get if she drinks the larger 20 oz. size.

What is proportion?

 Ratio and fractions are the main bases on which proportion is explained. Two ratios are equal when they are expressed as a fraction in the form of a/b, ratio a:b, and then a proportion. In this case, a and b can be any two integers. The ratio and proportion are important building blocks for understanding the numerous ideas in science and mathematics. Numerous challenges in daily life can be solved with proportion, including those in business when handling transactions or in the kitchen, among other situations. It creates a relationship between two or more quantities and aids in comparing them.

Here 16 oz medium size has 260 calories.

Then

=> \(\frac{size of coffee}{ calories}\)

=>\(\frac{16}{260}=\frac{20}{x}\)

=>x=\(\frac{20*260}{16}\)

=> x = 325

Hence 325 calories will she get if she drinks the larger 20 oz. size.

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Answer:

The last answer BD and BC

Step-by-step explanation:

A ray starts with the end point that does not continue.  Both rays would need to begin with B.  

The geometric mean of 3√5/4 and 5√5/4 is 5√3/4.

Geometric mean, like arithmetic mean, is a kind of average and a measure of central tendency.

To solve for the geometric mean, we multiply the numbers together and then take a square root (for two numbers), cube root (for three numbers) etc. In other words, geometric mean is the nth root of the product of n values.

The formula for the geometric mean is given by:

GM = n√x1 x2 . . . xn

Solving for the geometric mean between 3√5/4 and 5√5/4 using the formula:

GM = n√x1 x2 . . . xn

where n = 2, x1 = 3√5/4, and x2 = 5√5/4

GM = √(3√5/4)(5√5/4)

GM = √(75/16)

GM = 5√3/4

Hence, the geometric mean of 3√5/4 and 5√5/4 is 5√3/4.

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5 more than a number is greater or equal to 27

The "number" can be represented as x.

\(\boxed{x+5\geq 27}\)

╭⋟───────────────

\(\huge\boxed{\boxed{\underline{\textsf{\textbf{Answer}}}}}\)

Given,

< BAG = 2x°

< BAC = 90° [ < EAF = 90° (vertically opposite angles are equal to each other)]

< CAD = x°

____________________

Value of x = ?

____________________

From the figure we can see that,

< BAG + < BAC + < CAD = 180° (supplementary angles)

____________________

So to solve,

\( < BAG + < BAC + < CAD = 180 \\ 2x + 90 + x = 180 \\ 2x + x + 90 = 180 \\ 3x + 90 = 180 \\ 3x = 180 - 90 \\ 3x = 90 \\ x = \frac{90}{3} \\ x = 30\)

⏩ The value of x is \(\boxed{30}\)

____________________

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

\(RainbowSalt2^{2}2^{2}\) ღ

───────────────⋞╯

The algebraic expression to represent the total number of hours she will do chores will be f(x) = 8 + 2x

An algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations.

Let the number of hours she will do chores be x

Arlene did chores at her house for 8 hours last week and she plans to do 2 hours of chores per week, then the algebraic expression to represent the total number of hours she will do chores will be;

f(x) = 8 + 2x

where f(x) is the required total hour

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The other three measures are:

This, I assume, refers to two lines that cross and create four angles.

The same applies to angles 2 and 4 since angles 1 and 3 are vertical angles.

Since vertical angles are congruent in measure, it is simple to determine their measurements.

Hence, the three measures are:

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Answer:

m^8

Step-by-step explanation:

The number of tiles on the wall is m^(8)

What is Algebraic expression ?

Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.

Here, it is given that :

number of rows = m³

number of columns = m^(5)

Now, we have to find the number of tiles in a wall

= rows *  column

=  m³ *  m^(5)

= m^(3+5)

= m^(8)

hence, the number of tiles in a wall is m^(8)

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Answer:

7.20

Step-by-step explanation:

I took 18/5 and got 3,60 and then multiplied that by 2.

Answer:

y = −4x^2 + 4x − 3

Step-by-step explanation:

1. There will be $102, 826 in the account in 25 years.

2. The total amount of money you will put into the account is $60, 000

3. The total interest that you would have earned is $42,826.

For us to calculate the future value of the account in 25 years, we shoud use the formula; FV = P x (((1 + r)^nt - 1) / r)

When we insert the values, it will be

FV = 200 x (((1 + 0.04/12)^(12 x 25) - 1) / (0.04/12))

= 102, 825. 9. If we round this up, we should get

$102, 826

For us to calculate the total amount of money you put into the account, we should us the formula;

Total Deposits = Monthly Deposit x Number of Months

If we insert the values it wil be

200 x (25 x 12)

60,000

Lasty, if we are to find the total interest earned:

Total Interest = Future Value - Total Deposits

$102, 826 - 60,000

=  $42,826

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Answer: i think its D because X < -2 hopefully i helped

Step-by-step explanation:

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

The sides marked on the triangle are adjacent to and opposite the given angle. The mnemonic SOH CAH TOA is intended to remind you which trig functions relate which sides. The one applicable here is TOA:

  Tan = Opposite/Adjacent

Using the values on the diagram, we have ...

  tan(65°) = 18/y

Multiplying by y/tan(65°) gives ...

  y = 18/tan(65°)

  y ≈ 8.3935 ≈ 8.4

The probability that a randomly selected passenger has a waiting time greater than 4.25 minutes is 0.5278

The uniform distributed between a and b minutes.

The probability of finding a value above x is:

P(X > x) = \(\frac{b-x}{b-a}\)

The time is evenly distributed between 0 and 9 minutes.

This implies that a=0 , b=9

Determine the likelihood that a randomly selected passenger will have to wait longer than 4.25 minutes.

p(X > 4.25) = \(\frac{9-4.25}{9-0}\)

                 = 0.5278

There is a 52.78% chance that a randomly selected passenger will have to wait longer than 4.25 minutes.

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Answer: f(x) = 3x2−12x + 13

Answer:

Step-by-step explanation:

IJ ≈ JK ≈ KL ≈ LI: This indicates that all sides of the polygon are congruent.

m/I = 90°, m/J = 90°, m/K = 90°, and m/L = 90°: This indicates that all angles of the polygon are right angles.

With these conditions, we can conclude that the polygon IJKL satisfies the properties of a rectangle, a rhombus, and a square.

Therefore, the correct answers are:

Rectangle

Rhombus

Square

The optimal dimensions for the two adjacent rectangular corrals are: length = 80 feet, width = 20 feet.

Let's call the dimensions of the two adjacent rectangular corrals "width" and "length," and represent them by the variables w and l, respectively. The total length of fencing available is 160 feet, so the total amount of fencing used is:

P = 2w + 3l

The factor of 3l in this equation is due to the fact that there are three sides of length l: two of them are shared by the two corrals, and the other one is the outer side of one of the corrals.

The enclosed area of the two corrals is:

A = 2wl

To find the dimensions that maximize the enclosed area, we need to express A in terms of a single variable, either w or l. To do this, we can solve the equation P = 160 for one of the variables:

2w + 3l = 160

2w = 160 - 3l

w = 80 - (3/2)l

Substituting this expression for w into the equation for A, we get:

A = 2(80 - (3/2)l)l

Simplifying and expanding, we get:

A = 160l - (3/2)l^2

This is a quadratic function of l, with a maximum at the vertex of the parabola. The x-coordinate of the vertex is given by:

l = -b / (2a)

where a = -(3/2) and b = 160. Substituting these values, we get:

l = -160 / (2 * -(3/2)) = 80

Therefore, the optimal length of the two corrals is 80 feet. To find the corresponding width, we can use the equation we derived earlier:

w = 80 - (3/2)l = 80 - (3/2)(80) = 20

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Among the four given functions, function IV, f(x) = 25x¹⁰(4-x¹), is an even function. An even function is a function that satisfies the property f(x) = f(-x) for all x in its domain.

In other words, the function is symmetric with respect to the y-axis. To determine if a function is even, we need to check if f(x) is equal to f(-x) for all values of x in the domain of the function. Examining the given functions, we find that function IV, f(x) = 25x¹⁰(4-x¹), satisfies the property of an even function. By substituting -x into the function, we have f(-x) = 25(-x)¹⁰(4-(-x)¹) = 25(-x)¹⁰(4+x¹). Simplifying further, we get f(-x) = 25(-x¹⁰)(4+x¹). Comparing f(x) and f(-x), we observe that they are identical. Therefore, function IV, f(x) = 25x¹⁰(4-x¹), is an even function as it satisfies f(x) = f(-x) for all values of x in its domain.

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Answer:

96

Step-by-step explanation:

Answer:

What is the sum of the measures of the interior anles of a convex 13-gon? There is a formula... the sum of the measures of the interior angles of a convex n-gon is (n-2)180 degrees. For a triangle, n=3, so it's (1)180=180 degrees.

Step-by-step explanation:

180(n-2)

n=number of sides

from question, number of sides=13

substitute 13 into the equation given above

180(13-2)

180(11)

1980 is the answer

Answer:

Option 3

Step-by-step explanation:

The number on the inside is the dividend and the number on the outside is the divisor. So we just have to place the dividend on the top and the divisor on the bottom.

The solution of the expression ( 9y² - 4x )( 9y ² + 4x) will be 81y⁴ - 16x².

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given expression ( 9y² - 4x )( 9y ² + 4x) will be solved as below:-

Use the formula:- ( a + b ) ( a - b ) = a² - b²

a = 9y²

b = 4x

( 9y² - 4x )( 9y ² + 4x ) = ( 9y² )² - ( 4x )²

Therefore, solution of the expression ( 9y² - 4x )( 9y ² + 4x) will be 81y⁴ - 16x².

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The advancements in technology according to Brynjolfsson and McAfee is low job growth in the United States. The correct option is A.

Given a passage that is shown in the attached images.

Option A is the best answer. In the first paragraph of the passage, Brynjolfsson and McAfee clearly state that technological advances since the year 2000 have led to low job growth in the United States: Computer technology, from improved industrial robots to machine translation services, is largely responsible for weak job growth over the past 10 to 15 years.

Alternative B is incorrect because although Brynjolfsson and McAfee claim that some "changes" have occurred in the workplace due to advances in technology, they only make the tentative guess that These changes may reflect globally. Option C is incorrect because the passage records a decrease, not an increase of, in skilled workers. Option D is incorrect because the paragraph does not address new job creation globally, even speculating that employment could be negatively affected in countries with advanced technology.

Hence, according to Brynjolfsson and McAfee, advancements in technology since approximately the year 2000 have resulted from the given passage is low job growth in the United States.

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