find the critical value(s) and rejection region(s) for a right-tailed chi-square test with a sample size and level of significance .

It is possible to construct a triangle whose sides are 4.5 cm 6 cm and 7.5 cm because the sum of two sides are greater than third sides.

In the given question, we have to check that it is possible to construct a triangle whose sides are 4.5 cm 6 cm and 7.5 cm.

To check whether the given sides can make a triangle or not, we have to check that the sum of two sides always grater than the third side.

To check this we firstly add the 4.5 and 6

4.5 + 6 > 7.5

10.5 > 7.5

Now we add 6 and 7.5

6 + 7.5 > 4.5

13.5 > 4.5

Now we add 4.5 and 7.5

7.5 + 4.5 > 6

12 > 6

It is possible to construct a triangle whose sides are 4.5 cm 6 cm and 7.5 cm because the sum of two sides are greater than third sides.

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Answer:

follow me if this helped

Step-by-step explanation:

A kite is a four-sided figure that has two acute angles and two obtuse angles. The angles are formed by the intersection of the diagonals, which are not parallel.

[asy]

size(5cm);

draw((0,0)--(1,1.5)--(3,1)--(2,-0.5)--cycle);

draw((1,1.5)--(2,-0.5));

label("$A$",(0,0),SW);

label("$B$",(1,1.5),NE);

label("$C$",(3,1),SE);

label("$D$",(2,-0.5),NW);

[/asy]

A bow tie shape is another four-sided figure that has two acute angles and two obtuse angles. The angles are formed by the intersection of the diagonals, which are not parallel.

[asy]

size(5cm);

draw((0,0)--(1,1.5)--(2,0)--(1,-1.5)--cycle);

draw((1,1.5)--(1,-1.5));

label("$A$",(0,0),SW);

label("$B$",(1,1.5),NE);

label("$C$",(2,0),SE);

label("$D$",(1,-1.5),NW);

[/asy]

The solution of the equation is x = [tex]\frac{\sqrt{3} }{2}[/tex] and - [tex]\frac{\sqrt{3} }{2}[/tex].

Now, According to the question:

What is Quadratic Equation?

The polynomial equation whose highest degree is two is called a quadratic equation or sometimes just quadratics. It is expressed in the form of:

ax² + bx + c = 0

where x is the unknown variable and a, b and c are the constant terms.

The given equation is :

40x² = 30

40x² - 30 =0

Common factor:

10(4x²- 3) = 0

Divide both sides by the same factor

10(4x²- 3) = 0

4x²- 3 = 0

Use the quadratic formula:

x = -b±[tex]\sqrt{b^2-4ac}[/tex]/ 2a

Once in standard form, identify a, b and c from the original equation and plug them into the quadratic formula:

4x²- 3 = 0

a = 4

b = 0

c = -3

x =  -0±[tex]\sqrt{0^2-4(4)(-3)}[/tex]/ 2(4)

By simplify:

x = ±[tex]\frac{4\sqrt{3} }{8}[/tex]

To solve for the unknown variable, separate into two equations: one with a plus and the other with a minus.

x = [tex]\frac{4\sqrt{3} }{8}[/tex]

x = -[tex]\frac{4\sqrt{3} }{8}[/tex]

Rearrange and isolate the variable to find each solution

x = [tex]\frac{\sqrt{3} }{2}[/tex] and - [tex]\frac{\sqrt{3} }{2}[/tex]

Hence, The solution of the equation is x = [tex]\frac{\sqrt{3} }{2}[/tex] and - [tex]\frac{\sqrt{3} }{2}[/tex].

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The interquartile range (IQR) of this dataset is 8.25, it means that half of the observations fall between 53 and 61.25, while half of the observations fall outside of that range.

IQR stands for Interquartile Range, which is a measure of the variability of a dataset. It is defined as the difference between the third quartile (Q3) and the first quartile (Q1). To calculate the IQR, you first need to order the data set and find the median (middle value) of the dataset, and the Q1 and Q3.

Here is the dataset you provided, in order:

53 53 53 54 55 56 59 60 61 62 63 88

The median of the dataset is: (56+59)/2 = 57.5

Q1 is the median of the lower half of the dataset: (53+53+54)/3 = 53

Q3 is the median of the upper half of the dataset: (60+61+62+63)/4 = 61.25

Now you can calculate the IQR:

IQR = Q3 - Q1 = 61.25 - 53 = 8.25

So the interquartile range of this dataset is 8.25, it means that half of the observations fall between 53 and 61.25, while half of the observations fall outside of that range.

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The correct question should be:

"Find the interquartile range (IQR) of the following dataset

53 53 53 54 55 56 59 60 61 62 63 88"

Answer:

I believe B, E, and F is the answer

The given statement as an expression is 6x + 15 = 6x - 41

From the question, we have the following parameters that can be used in our computation:

A mathematical statement

The mathematical statement is given as

6 times a number plus 15 is equal to 6 times a number minus 41

Represent the number with x

So, we have the following representation

6 times x plus 15 is equal to 6 times x minus 41

is equal to implies =

So, we have:

6 times x plus 15 = 6 times x minus 41

Plus implies +, minus implies - and times *

This gives

6x + 15 = 6x - 41

The question does not require that we solve the expression

So, we leave it at 6x + 15 = 6x - 41

Hence, the required expression is 6x + 15 = 6x - 41

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An example of a pattern rule is "add 3" which means that to find the next term in a sequence, you add 3 to the previous term.

A pattern rule is a mathematical relationship used to find the value of each term in a sequence. To describe certain sequences, a pattern rule can be established. This is an algebraic equation that enables you to quickly find the value of a term in a sequence using its rank.

To write a rule for a sequence, you need to identify the pattern. This involves looking at the differences between the numbers and seeing if there is a pattern of increasing or decreasing numbers. Once you have identified the pattern, you can then write a rule that expresses that pattern.

Examples of pattern sequences include the Fibonacci sequence (1,1,2,3,5,8,13,21,34, etc.), the even numbers (2,4,6,8,10, etc.), and the multiples of 3 (3,6,9,12,15, etc.).

To describe the pattern of a sequence, you need to look at the differences between the numbers and the pattern of increases or decreases. For example, in the Fibonacci sequence, the pattern is that each number is the sum of the two numbers before it so 1+1=2, 1+2=3, 2+3=5, etc.

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One common trick for memorizing the 8 times table is to pair it with the 4 times table.

For example, 8 x 4 = 32, so 8 x 5 = 40 because 5 is one more than 4. Similarly, 8 x 6 = 48 because 6 is two more than 4, and so on. Another trick is to think of it as 8 x 10 = 80 and then subtract 8. For example, 8 x 7 = 80 - 8 = 72.

The eight times table trick states that when you multiply eight by a number between one and five, the result always begins with a digit one lower than the number from one to five. The answer begins with a digit that is two less than the number from 6 to 10 when multiplying 8 by a number between 6 and 10.

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The scale factor is greater than 1.

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So on solving the provided question we can say  that factors 8 = 1,2,4,8 factor 20 = 1,2,4,5,10,20

Any natural number other than 1 with just itself and the number 1 as its divisors is considered a prime factor. Actually, 2, 3, 5, 7, 11, and so on are some of the first prime numbers. an amount that has been multiplied to produce another amount. By dividing 15 by 3 and 5, for instance, we get 3 5 = 15. main elements: Prime factors include all factors that are prime but are not composite. A few prime factors of 30 are 2, 3, and 5. Only 2 and 3 are prime factors of 12, so listing 2 twice as 2 2 3 (or 22 3) is necessary to factorize 12. The sum of 2 + 3 is not 12.

here,

factors 8 = 1,2,4,8

factor 20 = 1,2,4,5,10,20

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Total cost of dinner including tip = $861.40

In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

Given

Cost of the dinner = $730

Amount tipped to the caterers = 18% of 730

                                                   = 18/100 × 730

                                                   = $131.40

Total cost of dinner = 730 + 131.40

Total cost of dinner = $861.40

Hence, $861.40 is the total cost of the dinner including tip.

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Answer:

y = f(x) = a + bx

Step-by-step explanation:

Step-by-step explanation: A linear function is a function of the form f(x) = ax + b, where a and b are real numbers. Here, a represents the gradient of the line, and b represents the y-axis intercept (which is sometimes called the vertical intercept).

As a result, the graph illustrating how one face's side width and diameter are linearly associated is the resolution to the given linear equation problem.

One degree is the highest number of levels that can be employed in a linear model. Nonlinearity is the property of any equation having a theoretical extent of at least two. On a map, there is a horizontal line with a straightforward equation. The graph shows the curve that a nonlinear equation produces.

Here,

the side lengths and perimeter of one face are linearly connected.

formula for lines

A regular model is described by the equation y = mx + b.

If b is in fact the y intercept and m is the changing rate, then y and x are variable.

One face's length and perimeter have a linear relationship, as seen by the graph.

As a result, the graph illustrating how one face's edge length or perimeter are linearly associated is the answer to the given linear equation problem.

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The value of the multiplication of the given fractions  [tex](\frac{1}{2} - \frac{2}{5}) * (- \frac{5}{7} + \frac{1}{14} )[/tex] is -9/ 140.

In mathematics, a fraction is used to denote a portion or component of the whole. It stands for the proportionate pieces of the whole. Numerator and denominator are the two components that make up a fraction.

A fraction multiplied by another fraction, an integer, or a set of variables is referred to as a fraction. The steps for multiplying fractions are as follows:

Add the numerator to the numerator to multiply. Add the denominator to the denominator and multiply. If necessary, simplify the fractions.

The multiplication of the given numbers is:

[tex](\frac{1}{2} - \frac{2}{5}) * (- \frac{5}{7} + \frac{1}{14} ) \\\\(\frac{5-4}{10} ) * (\frac{-10 + 1}{14} )\\\\\frac{1}{10} * \frac{- 9}{14} \\\\\frac{-9}{140}[/tex]

Hence, value of the multiplication of the given fractions [tex](\frac{1}{2} - \frac{2}{5}) * (- \frac{5}{7} + \frac{1}{14} )[/tex] is -9/ 140.

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Answer:

Last option: 5/8

Step-by-step explanation:

sin(angle) = opposite / hypotenuse

So, sin(B) = 4/6.4 = 20/32 = 10/16 = 5/8

Hope this helps!

A U B= { If x is a factor of 6 and y is a prime number}, then The collection of elements that belong to either set A or set B, or to both sets A and B, is the union of the two sets A and B.

[tex]$A=\{x \leq 5 ; x \in N\}$[/tex]

[tex]$: \mathrm{A}=\{1,2,3,4,5\}$\\$\therefore \mathrm{A} \mid=5$[/tex]

The following sets have been entered by you:

A = {(x: If x is a factor, then 6)}

B ={ ( y, where y is a prime number ) }.

A and B are combined to form:

[tex]$A \cup B$[/tex] = { If x is a factor of 6 and y is a prime number}, then

The collection of elements that belong to either set A or set B, or to both sets A and B, is the union of the two sets A and B. We discover togetherness in two steps: STEP 1: Compile a list of each component from each set.

[tex]$$\{(x: \text { xisafactorof } 6), y: \text { yisaprimenumber }\}$$[/tex]

Remove any components that are duplicates in step 2 to obtain:

[tex]$$A \cup B=\{(x: \text { xisafactorof } 6), y: \text { yisaprimenumber }\}$$[/tex]

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Answer: -c^12+9c^4

Step-by-step explanation:

Answer: 81 c^4 - c^12

Step-by-step explanation:

(9c^2+c^6)(9c^2-c^6)

Step-by-step explanation: (9c^2+c^6)(9c^2-c^6)

This is the difference of squares

(a+b) (a-b) = a^2 - b^2

(9c^2) ^2 - ( c^6)^2

81 c^4 - c^12

Answer:

B 4 times

Step-by-step explanation:

since the area is

side length × side length,

any doubling of the side length is included twice in this multiplication.

2×2 = 4

and so, answer B is correct. the new area will be 4 times the old one.

The true statements about the function and its graph are:

The graph of the function is a parabola.

The graph of the function opens up.

The graph contains the point (0, 12)

What is the quadratic function?

A quadratic function is a type of polynomial function of degree 2. It is defined as a function of form f(x) = ax² + bx + c, where a, b, and c are constants and a is not equal to 0. The graph of a quadratic function is a parabola, which is a U-shaped curve that opens up or down, depending on the value of the coefficient a.

The value of f(–10) = x² - 5x + 12 = (-10)² - 5(-10) + 12 = 100 - (-50) + 12 = 62, not 82.

The graph of the function is a parabola.

The graph of the function opens up.

The graph of the quadratic function is a parabola that opens up or down, which depends on the coefficient of x². If the coefficient of x² is positive, the parabola opens up, if it is negative, the parabola opens down. In this case, the coefficient of x² is positive, so the parabola opens up.

The graph contains the point (0, 12)

The graph does not contain the point (20, -8) since the x-coordinate is outside the domain of the function.

Hence,  The true statements about the function and its graph are:

The graph of the function is a parabola.

The graph of the function opens up.

The graph contains the point (0, 12)

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A 2 3 aspect ratio is an image size format that refers to the proportion of width to height.

Ratio is a comparison between two or more quantities expressed as a fraction, or a set of relative quantities. It is used to compare the size of one number to another, or to compare changes over time. Ratios can be expressed in words, as fractions, or as decimals. Ratios are an important concept in mathematics, used to analyze data and solve problems.

It is commonly used in photography and video and is expressed as two numbers separated by a colon. The first number represents the width and the second number represents the height. For example, a 2 3 aspect ratio would be expressed as 2:3, meaning that the width is twice as wide as the height. This aspect ratio is also known as the "Golden Ratio" and is often used for print and digital media.

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Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

cos (61 degrees) = c/19

plug in cos(61) degrees into your calculator to get .484

484 = c/19

Multiply both sides by 19 to isolate c by itself.

9.20 = c

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Sequences can start at either 0 or 1, depending on the specific sequence and the conventions used.

In mathematics, there are two main ways to number the elements of a sequence: zero-indexing and one-indexing. In zero-indexing, the first element of a sequence is assigned the index 0, the second element is assigned the index 1, and so on. This is the standard convention used in computer science and programming.

On the other hand, in one-indexing, the first element of a sequence is assigned the index 1, the second element is assigned the index 2, and so on. This is the standard convention used in mathematics and many other fields.

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Answer:

40

Step-by-step explanation:

total: 56+80+40+24 = 200

(80x100)/200

Answer:

What you first want to do is see what all of the numver of students add up to:

80 + 40 = 120

120 + 24 = 144

144 + 56 = 200

So there are a total of 200 votes. 40 of the 200 vote mystery, so you need to find how many times 40 will go into 200. To find this you can just divide.

200/40 = 5

5% prefer mystery books!

Step-by-step explanation:

Hope it helps! =D

I think I did the math wrong, but just by looking Im pretty sure its 5%

The price of one orange is £0.45 and one cauliflower is £1.1.

An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation. This math operation can be addition, subtraction, multiplication, or division. For example, the phrase “6 added to some number” can be written as the expression x + 6, where the variable x represents the unknown number.

Let's consider the price of one orange be x and price of one cauliflower is y.

so, from given conditions,

2x + y = 2

y = 2 - 2x         - ( 1 )

4x + y = 2.90   - ( 2 )

substitute equation (1) in equation (2),

4x + 2 - 2x = 2.90

4x - 2x = 2.90 - 2

2x = 0.90

x = 0.90 / 2

x = 0.45

now, put the value of x in equation ( 1 ),

y = 2 - 2 × 0.45

y = 2 - 0.9

y = 1.1

Therefore, the price of one orange is £0.45 and one cauliflower is £1.1.

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Answer:

x = -5

Step-by-step explanation:

Now we have to,

→ find the required value of x.

The equation is,

→ |10x + 50| = 0

Then the value of x will be,

→ |10x + 50| = 0

→ 10x + 50 = 0

→ 10x = 0 - 50

→ 10x = -50

→ x = -50/10

→ [ x = -5 ]

Hence, the value of x is -5.

Answer:

168 deg

Step-by-step explanation:

Assuming the increase in temperature in constant during the 3 weeks, we do the following calculations-

8 deg * 7 = 56 deg / week (Since there are 7 days in a week)

56 * 3 = 168 deg in 3 weeks.

The value of x for the given expression is found as 2189/3.

The stated expression is-

3x − 2 = 3^7

Obtain the value of 3^7 by solving its power.

3x − 2 = 2187

(3x − 2) + 2  = 2187 + 2

3x − 2 + 2  = 2189

3x  = 2189

3x / 3  = 2189 / 3

x = 2189/3

Thus, the value of x for the given expression is found as 2189/3.

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The correct question is-

Solve 3x − 2 = 3^7 and find the value of x.

Therefore ,the solution to the given problem of linear equation comes out to be m =1,b =24, z = 21 and r =-7.

A function is said to be linear if it can be written algebraically as y=mx+b. The y-intercept is m, and the slope is B. Because y and x are both elements in the previous sentence, it is widely termed to as a 2 different equation system. Linear equations featuring two variables are known as bivariate equations. Two examples of the many applications of linear equations are x + z = 2 , 3z - y + z = 3. If a mathematical equation has the form y=mx+b, where m stands for the slope and b for the y-intercept, it is said to be linear. The equation is represented as Y=mx+b, where m denotes the elevation and b the y-intercept.

Here,

Given :

=> 6m =6

=> m =1

2)

=>b/-8 =-3

=> b =24

3)

=>3/7 * z  =9

=> z = 9 * 7 /3

=> z = 21

4)

=> -5/7 *r = 5

=> r =-7

Therefore ,the solution to the given problem of linear equation comes out to be m =1,b =24, z = 21 and r =-7.

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Answer:

35

Step-by-step explanation:

a=adult c=children

7a:4c

?a:20c

20 is 5 times more than 4 which I found by doing 20/4

So now we multiply 7 by 5 to get 35

35a:20c

There are 35 adults