Are 2 congruent triangles always similar?

The probability of the result is 11/21.

A combination is a selection of all or a portion of a group of items, regardless of the sequence in which the items are chosen.

Ray has 4 even numbered cards and 5 odd numbered card.

Ray takes at random three of these cards.

Let, all the three cards are even numbered card.

So, the sum of even numbers is even.

Suppose, two cards are odd numbered and one card is even numbered.

And the combination of 2 odd numbered card and one even numbered card is even.

Now, the possible outcomes;

= {C³₄ + C¹₄C²₅} / C³₄

In order to solve the combination:

Simplify,

{C³₄ + C¹₄C²₅} / C³₄

= [ 3! / {4! x (4-3)!} + 1!/{4! x (4-1)!} x 2!/{5! x (5-2)!} ] / [3! / 4!x (4-3)!]

= 11/21

Therefore, the probability is 11/21.

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The method to find the domain and range of the line graph is shown below .

In the question ,

we have to explain how we can find the domain and range of a line graph that is linear function .

we know that ,

Domain is the set of all possible input values , which produce a valid output from a particular function. It is set of all values for which the function is mathematically defined.

For Example ,

let the linear function be ⇒ f(x) = 2x + 1 ,

for the function every real number is a possible input .

thus ,  function's domain is all real numbers .

A line graph (shown below) , will extend forever in either y direction.

The range of linear function is all real numbers .

Therefore , the method to find the domain and range is explained above .

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The mass of an object on the moon will be same that is 20 Kg when it's mass on the Earth is 20 Kg .

In the question ,

it is given that ,

the mass of the object on the Earth is 20 Kg .

we have to find the mass of the same object on the moon ,

We know that Mass is defined as the numerical measure of its inertia ,

and weight is calculated as

weight = mass × gravity ,

and mass is a constant quantity ,

So , the mass remain unchanged that is 20Kg .

Therefore , the mass of the object on the moon will be same as of Earth that is 20 Kg .

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The information is provided below using a random sampling from a healthy population. a 90% confidence interval for . 114 is the lower bound of the confidence interval.

To find the lower bound of the 90% confidence interval, we need to calculate the 5th percentile of the data. To do this, use the formula that goes like this:

5th percentile = 114 + (0.90 * (512 - 114))

= 114 + (0.90 * 398)

= 114 + 358.2

= 472.2

Therefore, the lower bound of the 90% confidence interval is 472 (rounded to the nearest integer).

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Answer: A :)

Step-by-step explanation:

The best and most correct answer is 2x greater then zero which satisfy the condition.

The absolute value function is defined by the following piecewise rule, depending on the input of the function:

If x ≥ 0, then we need to find x+|x|

Since {x | x < 0} and {x | x > 0} there is no number that is less than zero and greater than zero at the same time.

WE need to add here;

x+|x|  = 2x

Therefore, we can see that 2x is greater then zero which satisfy the condition.

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The length of a rectangle is found to be 18 cm.

An enclosed 2-D shape plane called a rectangle has four sides, four corners, and four right angles (90°). It has equal and parallel opposite sides. Because a rectangle is a two-dimensional form, it has length and width as its two dimensions. The length of a rectangle is considered as its longer side; its breadth is considered as its shorter side.

The perimeter of the rectangle is given as 54 cm. Let's consider the length of the rectangle as x and the width as y.

The formula to calculate the perimeter is 2(x+y).

The length is given as 2y.

Then, the perimeter is,

[tex]\begin{aligned}\text{Perimeter}&=2(2y+y)\\&=4y+2y\\&=6y\\54&=6y\\y&=\frac{54}{6}\\&=9\end{aligned}[/tex]

Then, the length is 2y=2×9=18.

The answer is 18 cm. Therefore, the correct option is option a.

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Answer:

Step-by-step explanation:

IS =K

The required amount that Ethan have to pay is $32.

A sales discount is a marked down cost presented by a business on an item or administration. Figure out how to remember limits for solicitations. A deals rebate, likewise usually known as only a 'markdown' furnishes clients of a business with a diminished rate on at least one of the items or administrations being advertised.

We have,

Selling price = $39.99

Discount = 20%

20% of $39.99 = 20×$39.99/100

⇒ $7.99

So the payable amount for video game = $39.99 - $7.99

⇒ $32

Thus, required price is $32.

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The relationship between the points on the line and solutions to the linear equation is, the equation has a solution at each point along the line.

In the given question, we have to find the relationship between the points on the line and solutions to the linear equation.

The equation has a solution at each point along the line. This simply means that it is easy to tell whether an ordered pair is a solution to an equation. The ordered pair is a solution to the equation if it lies on the line drawn by the linear equation.

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So, bottling process is in control thus .0124 portion is fall outside the limit.

In statistics, the standard deviation measures how widely distributed or how much a set of values might vary. While a high standard deviation denotes that values are scattered throughout a wider range, a low standard deviation suggests that values are normally close to the set's mean.

Here,

A sample consisting of a single bottle contain between 350 and 360 milliliters of product is taken

Since ,

bottles contain an average of 355 milliliters, has Standard deviation = 4 milliliters

using fomula

Sd= 4 milimeters

upper bound 360

an lower bound = 350

So, bottling process is in control thus .0124 portion is fall outside the limit.

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The length of segment FG is 26 feet.

A straight line is an endless one-dimensional figure that has no width. It is a combination of endless points joined on both sides of a point.

Given that line CE  bisects line FG.

DG= DE,

The length of segment CE is forty two feet.

CE=42 feet.

The length of segment CD is Twenty nine feet.

CD=29 feet.

We need to find the length of FG.

Firstly let us find the length of DE.

CE-CD=DE

42-29=13 feet.

As DG=DE then the length of DG is 13 feet.

DG=DF=13

FG=DG+DF

=13+13=26 feet.

Hence, if line CE bisects line FG, DG= DE, CE= 42 feet and CD= 29 feet then FG is 26 feet.

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Therefore , a)different orders can the spider put on its socks and shoes is  [tex]\frac{16!}{(2!)^{8} }[/tex]  and b)the total no of ways for people to discharge from lift is 14112 ways.

Selections are another name for combinations. Combinations represent the choosing of items from a predetermined group of items. We're not trying to arrange anything here. We're going to pick them. We write n C r to represent the number of distinct r-selections or combinations among a set of n objects. Compared to arrangements or permutations, combinations are different.

Here,

Each dressing sequence may be uniquely characterized by a series of two 1s, two 2s,..., and two 8s; the spider is said to put the sock on leg x in the first instance, and the shoe on leg x in the second instance.

The solution would be 16! if each number were unique.

However, because 8 words appear twice, the solution is

=>  [tex]\frac{16!}{(2!)^{8} }[/tex]

Thus different orders can the spider put on its socks and shoes is  [tex]\frac{16!}{(2!)^{8} }[/tex]

Thus,

Part A: When the elevator operator can't tell who is who.

Currently, there are 6 floors and 10 persons, and each floor loses one.

so 8+6-1=13

applying combination

=>[tex]C^{13} _{5}[/tex] =  1287 ways.

Part 2: When the elevator attendant separates males from ladies.

There are 3 females and 5 males.

The formula for choosing five men is (5 + 6)-1= (10).

Applying combination  

=> .[tex]C^{10} _{5}[/tex]= 252 ways

techniques to choose ladies = 3+6-1=8

Applying combination  

=> [tex]C^{8} _{5}[/tex] = 56 ways

Total no. of ways

=>  252*56 = 14112 ways.

Therefore , the total no of ways for people to discharge from lift is 14112 ways.

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Answer: 40%

Step-by-step explanation:

Take 170 divided by 425, then times 100% = 40%

So 40% of the guests ordered food!

Answer:

If a shirt is on sale for 25% off and the original price was $120, then the sale price is $90. This is because 25% of $120 is $30, and when we subtract this amount from the original price, we get $120 - $30 = $90.

In general, if an item is on sale for x% off and the original price was y dollars, then the sale price is y - (x/100) * y dollars. For example, if the discount is 25% and the original price is $120, then the sale price would be $120 - (25/100) * $120 = $90.

Step-by-step explanation:

Answer:

The sale price is $90

Step-by-step explanation:

Now,

(120 × 25) ÷ 100 = $30

Here, we get 25% of $120 is $30

So,

$120 - $30 = $90

Thus, The sale price is $90

Answer:

84%

Step-by-step explanation:

To find the mean, you use a formula.

You add up all the numbers, then divide that by how many numbers you have:

80 + 92 + 80 + 84

336 / 4 = 84

thus 84 is the answer

Yes a sound argument has true conclusion this statement is true.

1. A valid argument must have a true conclusion.

This statement(1) is false. A valid argument must have a true conclusion only if all of the premises are true.  So it is possible for a valid argument to have a false conclusion as long as at least one premise is false.

2.A sound argument must have a true conclusion.

This Statement(2) is true.

If an argument is sound, then it is valid and has all true premises.  Since it is valid, the argument is such that if all the premises are true, then the conclusion must be true.  A sound argument really does have all true premises so it does actually follow that its conclusion must be true.

3. If a valid argument has a false conclusion, then at least one premise must be false.

this statement(3) is true

A valid argument cannot have all true premises and a false conclusion.  So if a valid argument does have a false conclusion, it cannot have all true premises.  Thus at least one premise must be false.

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4. Definition of midpoint

5. Definition of an equilateral triangle

6. SSS

Answer:

Butane Gas

Step-by-step explanation:

When you add butane gas to soapy water, it reacts with a lighter/fire and will burst into flames. An example video should show up if you search for burning hand fire experiment online.

The condition under which someone becomes more rational is when someone provided probability information.

Probability gives information about the likelihood that something will occur. For instance, weather patterns are used by meteorologists to predict the possibility of rain. Probability theory is utilized in epidemiology to comprehend the connection between exposures and the risk of health outcomes.

Everyday existence heavily relies on probability. In the analysis of political strategies, the determination of blood types, sports and gaming strategies, purchasing or selling insurance, online shopping, and online games.

Thus, having knowledge about probability makes someone more rational.

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The corresponding angle to angle 4 is angle 8.

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the 165 different committees are possible in combination.

What is combination?

If the order of the selections is unimportant, a combination is a mathematical choice made from a collection of various elements (unlike permutations). An apple and a pear are just one of three conceivable combinations if three fruits, such as an orange, an apple, and a pear, are provided. A k-combination of a set S is, technically speaking, a subset of the k distinctive elements of S. Alternatively said, two combinations are identical if and only if they have the same members. (How each set's members are ordered is not crucial.) the number of k-combinations given a set of n elements

That would be equal to the Combinations of 11 items taken 3 at a time.

C(n , k) = n!/[k!(n - k)!]

= 11!/[3!*(11 - 3)!]

= 11!/(3!*8!)

= 11*10*9/3*2

= 15*11

=165

Hence the 165 different committees are possible in combination.

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Total cost , C become 30 + 10m

What do you mean by algebraic expression?

The concept of algebraic expressions is the use of letters or alphabets to represent numbers without providing their precise values. We learned how to express an unknown value using letters like x, y, and z in the fundamentals of algebra. Here, we refer to these letters as variables. Variables and constants can both be used in an algebraic expression. A coefficient is any value that is added before a variable and then multiplied by it.

It is given that the registration fees is $30 and monthly fees be $10

Let the number of months be represented by m

Total cost, C = 30 + 10m

Therefore, Total cost , C become 30 + 10m

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The slope percentage of the given ratio i.e. 1:12 is 83.33%.

You can determine the slope percentage by dividing the elevation change by the horizontal distance covered (sometimes called "the rise divided by the run") and multiplying the result by 100. The "run" assumes a flat surface - it doesn't account for elevation change when factoring in the actual distance traveled.

Example: let’s assume a mountaineer climbs 1,000 feet in altitude (the rise) and the horizontal distance measured on the map is 2,000 feet (the run).

thus, 1,000/2,000 = 0.5

Multiply 0.5 by 100 to derive the percent of the slope, which is 50%.

Hence, the slope percentage of 1:12 is = (1/12) x 100

                                                                  = 8.33 x 100

                                                                = 83.33 %.

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The complete question is -

What is the slope percentage of 1:12?

There are 4 ways are there to color the five squares

Given that

Reds cannot be placed close to one another per the regulations, so the three reds must be placed in squares 1, 3, and 5.

We can use either yellow or blue in Square 2. There is only one color remaining for square 4 after each of those decisions.

There are 4 ways.  

Red  Yellow  Red  Blue  Red  

Red  Blue  Red  Yellow  Red  

Red  Yellow  Red  Yellow  Red  

Red  Blue  Red  Blue  Red  

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The slope of the line that passes through the points (-5, 6) and (-9, -6) is 3

What is slope ?

A line's steepness is determined by its slope. In mathematics, slope is determined by "rise over run" (change in y divided by change in x).

Let the given points as shown:

(x1,y1)= (-5, 6) and (x2,y2)= (-9, -6)

Slope = m = (y2-y1) /( x2-x1)

                 = (-6-6) /(-9-(-5))

                 = -12/-4

                 = 3

So, the slope of the line that passes through the points (-5, 6) and (-9, -6) is 3

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