One year, the population of a city was 312,000. Several years later it was 274,560. Find the percent decrease.

The perimeter and the area of the triangle are given as follows:

The perimeter of the triangle is given by the sum of the lengths of the outer edges of the triangle.

From the image given at the end of the answer, these lengths are of:

Hence the perimeter of the triangle is of:

P = 4 + 8 + 8.83 = 21 cm.

(rounded to the nearest cm, as each unit represents 1 cm).

The triangle in this problem is a right triangle, hence the area is obtained by half the multiplication of the sides, as follows:

A = 0.5 x 4 x 8 = 16 cm².

The problem is incomplete, hence a similar problem was given and solved, by the triangle in the image at the end of the answer.

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The Python program to print the value of the input string is as follows:N= int(input("Enter a integer variable N (0 <= N <= 100): ")), W = input("Enter the word W (length of 1 <= L <= 50): "), for n in range(N):, print(W)

In a mathematical problem or experiment, a variable is a quantity that can change. To represent a variable, we typically use a single letter. Generic symbols used frequently for variables include the letters x, y, and z.

Program -

N= int(input("Enter a value of integer N (0 <= N <= 100): "))

W = input("Enter the word W (length of 1 <= L <= 50): ")

for n in range(N):

print(W)

Here,

defining the integer variable "N" that accepts a user-supplied integer value.

The user-end string value is input using another variable "W" that is declared in the next step.

A for loop using the range method and an integer variable is declared after all input values have been entered. This loop prints the string value.

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The two given fractions  [tex]\frac{20}{8}[/tex] and [tex]\frac{28}{9}[/tex] do not form a proportion.

How to find fractions that are in the same proportion?

Proportion shows that two fractions are equivalent or equal.

The given fractions are  [tex]\frac{20}{8}[/tex] and [tex]\frac{28}{9}[/tex]

Proportions are expressed in the form a:b::c:d

Where a and b represent antecedent and consequent respectively

This implies that a:b::c:d ⇒ [tex]\frac{20}{8}[/tex] : [tex]\frac{28}{9}[/tex]

The values  [tex]\frac{20}{8}[/tex] = [tex]\frac{28}{9}[/tex]

Since (20x9) is not equal to (8x28)

Multiplying the two sides to get

180=224.  This is a wrong representation.

Therefore the two fractions do not show a proportion

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Answer:

The total profit for the grain merchant selling 600 quintals of rice is Rs 12800. To calculate this, we first need to calculate the profit on one quintal. The profit percentage is 7%, so if a quintal costs Rs 250 the profit is 7% of 250 which is Rs 17.5. Now we multiply this with the number of quintals sold, which is 600, to get Rs 10500 as the profit. We then add in the overhead charges of Rs 1000 to get a total profit of Rs 12800. The selling price of 600 quintals of rice is therefore Rs 12800 plus Rs 250 times 600, which equals Rs 180000.

Answer:

I believe the answer is A because one is a reflection and another is a translation.

The greatest common factor of 30+42 according to the distributive property is 6×12.

The distributive law, which states that equality is always true in elementary algebra, is generalized by the distributive principle of binary operations in mathematics.

For instance, addition is said to be more evenly distributed than multiplication in elementary mathematics.

So, here we wish to calculate the largest common factor between the numbers 30 and 42, which equals the total of 30 and 42.

Going one for one, the biggest divisor of 30 is 15, and since 42 cannot be divided by 15, this means that there isn't a frequent divisor of 30 and 42.

Since 10 is not a divisor of 42 and is the second largest divisor of 30 (10*3 = 30), it is not a common divisor of both 30 and 42.

6, which is also a divisor of 42 (6*7 = 42), is the third-largest divisor of 30 (6*5 = 30).

Then both 30 and 42 have 6 in common the most.

We may factor the total now by:

30 + 42 = 6*5 + 6*7 = 6*(5 + 7) = 6*12

Therefore, the greatest common factor of 30+42 according to the distributive property is 6×12.

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Correct question:
Apply the distributive property to factor out the greatest common factor. 30+42

The number of different possible ways in which the gifts can be given to 3 out of 23 women is 10626.

Each gift can be considered a position given to one of 23 women. The number of ways in which gift can be given to them is :

First gift : 23 possibilities

Second gift: 22 possibilities

Third gift: 21 possibilities

So, the gifts may be given in

23 * 22* 21

= 10626

We could encounter several patterns and number kinds in mathematics. Sequences are included in one of the number patterns.

Repetition is permitted and order is important in the sequence, which is a predetermined group of objects. Formally, a sequence is a function that connects the elements at each point to natural numbers. It has members, which are known as elements or words, just like a set.

The length of the sequence is determined by the number of items. In contrast to a set, the same items might appear more than once in a sequence at various points, and the order does important.

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If you pay $25 per month for your cell phone and an additional $5 for each picture you send then y=25x+5 is the equation  to represent the cost of your phone.

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

Given that you pay $25 per month for your cell phone

An additional $5 for each picture you send

We have to find the equation which represent the cost of your phone

Let x be the number of months.

The equation should be in the form of y=mx+b

in the given equation m is the slope and b is the y intercept or the additional fee.

y=25x+5 is the required equation

Hence, if you pay $25 per month for your cell phone and an additional $5 for each picture you send then y=25x+5 is the equation  to represent the cost of your phone.

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We will see that the given equation is false for all values of z, thus, the equation has no solutions.

Here we have the absolute value equation:

3*|2z + 9| + 12 = 10

To solve this we first need to isolate the absolute value part, so let's do that:

3*|2z + 9| + 12 = 10

3*|2z + 9| = 10 - 12 = -2

|2z + 9| = -2/3

Now, remember that the absolute value is always a positive quantity, then the above equation is false, an absolute value never can be equal to a negative number.

Then our equation has no solutions.

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Total number of different chords of the circle passing through point P with integer lengths is equal to 7.

As given in the question,

Radius of the circle = 15units

Longest chord of the circle 'diameter' = 2 × 15

                                                               = 30units

Point 'P' is 9 units away from the circle.

Consider shortest distance( perpendicular) of point P for shortest chord.

Half length of the chord , shortest distance and radius form right triangle.

(1/2) length of the chord = √15² - 9²

                                        = √225 - 81

                                        = 12units

Length of the chord = 2(12)

                                 = 24 units

Different Chords with integer length = 24, 25, 26, 27, 28 , 29 , 30

Total number of different chords = 7

total number of chords = 6 original + 6 mirror image + 1 longest chord

                                       = 13

Therefore, total chords with different integer length passing through the point P of the circle is 7.

The complete question is :

A point P is at the 9 unit distance from the center of a circle of radius 15 unit. How many total number of different chord of the circle passing through the point P and have the integer lengths?

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Answer:

Look at the solution to your other similar question and see if you can figure this one out now.

Step-by-step explanation:

Answer= The number 6138 is called the numerator or dividend, and the number 2 is called the denominator or divisor.

The quotient of 6138 and 2, the ratio of 6138 and 2, as well as the fraction of 6138 and 2 all mean (almost) the same:

6138 divided by 2, often written as 6138/2.

Read on to find the result of 6138 divided by 2 in decimal notation, along with its properties.

Answer:

$160 for 10 books is the BEST buy.

Step-by-step explanation:

To find which one is the best buy, we need to find the unit rate for the books (which is how much each book is worth). We do this by simply dividing the two numbers in each buy:

160 ÷ 10 = 16

114 ÷ 6 = 19

Since the first one is a smaller price, the first one is our answer.

May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I only need 3 more brainliest to become a genius! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!

It would be $160 for 10 books

Among the 3000 students, at least 5 students will turn in the exact same answers for the quiz questions.

What does at least mean in probability?

"At least" means as follows: equivalent to or less than. The bare minimum that should happen once a random event occurs is called the least mean in probability.

It will be the complement of the event never occurring to determine the likelihood of an event occurring at least once. In other words, there is a 100% chance that the event will occur regardless of its likelihood of never happening or happening at least once.

Solution Explained:

The quiz has 54=625 different possible outcomes. Given that 625 divided by four equals 2600 and 625 multiplied by five equals 3125, we deduce that 5 students will submit the same set of answers. This is due to the fact that there would be a maximum of 2600 students if only 4 students submitted each answer sheet.

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Answer:

Deci (símbolo d) es un prefijo del Sistema Internacional que indica un factor de 10−1 (1/10) o una décima parte.

The number of times that the base unit contains the corresponding prefix deci is 10.

Base units are the units which are used in measurements as the basic ones from which the other units of measurements has been derived.

Some of the common base units are second, meter, kilogram, etc.

We have to find the number of times the base unit contains the corresponding unit with prefix deci.

This means that how many times 1 meter contains decimeter.

This goes for each base units.

We know that,

1 meter = 10 decimeters

Any of the base units is 10 times the corresponding unit with prefix deci.

Hence the number of times that a base unit contains the corresponding unit with prefix deci is 10.

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The question in English is,

How many times does the base unit contain the corresponding prefix deci?

Answer:

x = -96/7 or -13.714285

Step-by-step explanation:

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Answer: $36

Step-by-step explanation: 6 times 2 is 12

12 times 3 is 36

a)

There are 3268760 different ways for the company to place the lunch order for the 10 lunches

b)

There are 11861676288000 ways for the company to place the lunch order if the 10 lunches purchased are all different

What is permutation and combination?

The process of placing all the components of a set into a certain sequence or order is known as permutation in mathematics. In other terms, the process of permuting is the reordering of the components of a set if the set is already ordered. Nearly all areas of mathematics include permutations in some form or another. They frequently appear when various orderings on certain finite sets are taken into account.

Contrary to permutations, the order of selection is irrelevant when choosing elements from a collection using the combination method. The number of combinations may be counted in simpler situatiThe combinationation is the taking together of n items, k at a time, without repetition. The terms k-selection or k-combination with repetition are frequently used to describe combinations where repetition is permitted.

a) total different ways are [tex]C^{25} _{10}[/tex]

= 25!/(25-10)!10!

= 25!/15! * 10!

= 3268760

b) total different ways are [tex]P^{25} _{10}[/tex]

= 25!/(25-10)!

= 25!/15!

= 11861676288000

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When an object is to be generated, classes are utilized as templates, whereas methods are functions that are called or invoked.

A class is a template specification of the method(s) and variable(s) of a certain sort of object in object-oriented programming. As a result, an object is a particular instance of a class; instead of variables, it holds real values. One of the fundamental concepts of object-oriented programming is the class.

A class outlines the information included in the objects that are a part of it, including the actions and a collection of data fields known as instance variables (called methods). An object is an element (or instance) of a class, and objects exhibit the behaviors of the classes in which they belong.

We use the self keyword to declare the attribute purchase price (type int), initializing the value to 0.

Therefore, the purchase price attribute declaration is as follows:

self.purchase price equals zero

We just need to invoke the model year and purchase price variables to define the print info() function.

The print info() function is therefore defined as follows:

   def print_info(self):

   print("Car's information:")

   print(" Model year:", self.model_year)

   print("Purchase price:", self.purchase_price)

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Answer: r=2

Step-by-step explanation:

do .5/.25=2

Answer:7

Step-by-step explanation:

Can write it as

10t -15 - 7.5t = 6 - 0.5t

2.5t -15 = 6 - 0.5

3t - 15= 6

3t = 21

t= 7

The graph that shows the function Y=⌊x⌋+3 is given by the image shown at the end of the answer.

The function in this problem is defined as follows:

Y=⌊x⌋+3.

The term ⌊x⌋ is the floor function of x, giving the greatest integer that assumes a value less than x.

The intervals to the function are given as follows:

Then the translation is given as follows:

Y = y + 3.

Meaning that the function was shifted three units up.

Thus the correct graph is the bottom right graph, given by the image shown at the end of the answer, because:

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Answer:

Negative one-half (negative 2) (x + 3) = negative 10 (negative one-half

The measure of the smallest angle A of the triangle is 29°, whose second angle is 6 degrees larger than the smallest angle and the third angle is 4 times as big as the smallest one.

we know that the Sum of the measure of all the angles in the triangle is 180 degrees.

Let,  ∠ A = smallest angle

  ∠ B = A+6

 ∠ C = 4 (∠A)

So, we can write that,

∠ A + ∠ B +  ∠ C = 180°

∠A + (∠A+6) + 4∠A = 180°

6 +  ∠A + ∠ A + 4∠A = 180°

6 + 6 ∠A = 180°

6∠A = 180° - 6

6 ∠A = 174

∠A = 174/6

∠A = 29°

Hence, the smallest angle A is 29°

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a) Four-digit strings with 10⁴ characters are available.

b) A string that finishes in an odd number has 10 options for the first three digits and 5 options for the last digit.

c) The fourth digit has nine alternatives.

Given,

We have to find the number of strings of four decimal digits for the following conditions;

a) Do not use the same numeral more than once.

There are 10⁴ strings with four decimal digits.

We have 10 options for the first digit, 9 options for the second digit, 8 options for the third digit, and 7 options for the fourth digit when creating a string with 4 different digits. We deduce from the product rule that there are 10 9 8 7 = 5040 four decimal digits with no duplicate digits.

b) End with an odd digit

There are 10 choices (ranging from 0 to 1, 2,..., 9) for the first three digits of a string that ends in an odd number, and 5 possibilities (ranging from 1, 3, 5, 7,.., 9) for the last digit. According to the product rule, there are 5000 strings that terminate in an even number, or 10 × 10 × 10 × 5.

c) Have exactly three digits that are 8

There is one non-8 digit in the 4-decimal string, which includes exactly 3 digits that are 8. Therefore, there are 9 options for the fourth digit (ranging from 0 through 1, 2, 3, 4, 5, 6, and 9). The non-digit may appear in the string at positions 1, 2, 3, or 4. The sum rule leads us to the conclusion that there are 36 four decimal digits with exactly three 8s, which equals 9 + 9 + 9 + 9 = 36.

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Question is incomplete. Completed question is given below;

How many strings of four decimal digits

a) Do not contain the same digit twice

b) End with an odd digit?

c) Have exactly three digits that are 8

Answer: 12

Step-by-step explanation: First turn 75% into its decimal form 0.75

Then multiply this by 48.

0.75 x 48 = 36

36 is 75% of 48

Then subtract 36 from 48. This will get you 12.

The angle of elevation of the femur is 71°.

The angle of elevation:

The angle is formed by the line of sight and the horizontal plane for an object above the horizontal.

Here we have to find the angle of elevation of the femur.

Data given:

length of femur = 18 inches

elevated = 6.2 inches

Formula to calculate the angle of elevation:

Tangent of the angle of elevation = height of the object/distance from the object

tan Ф = 18/ 6.2

tan Ф = 2.903

Ф = [tex]tan^{-1}[/tex]( 2.903)

   = 71°

Therefore the angle of elevation is 71°.

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By using the concept of subtraction and multiplication, it can be calculated that

Ashley should buy 5 balls

What is subtraction and division?

To find how big or small one number is from the other, then the operation used is called subtraction

Division is the process by which value of single unit can be calculated from the value of multiple unit.

The number to be divided is known as dividend, the number by which the dividend is divided is the divisor, the result obtained is the quotient and the remaining part is the remainder.

There is a well known formula for division

Divisor x Quotient + Remainder = Dividend.

This is a word problem on subtraction and division

Total length of Wool Ashley required = 900 [tex]\times[/tex] 3 = 2700 ft

Length of wool Ashley has = 200 ft

Length of wool Ashley still needed = 2700 - 200 = 2500 ft

Length of wool in each ball = 500

So Number of balls required = 2500 [tex]\div[/tex] 5 = 5

Ashley should buy 5 balls

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Commission rate = 6%

Sales = $43,000

Commission = 6% of 43,000

= 0.06 × 43,000

= $2,580

Suppose sales would double. What would be true about the​ commission?

If sales doubles, that is,

Sales = $86,000

Then, commission also doubles

Commission = $5,160

Check:

Sales = $86,000

Commission rate = 6%

Commission = 6% of $86,000

= 0.06 × 86,000

= $5,160

The correct answer is 'Do not reject the null hypothesis as there is not sufficient evidence that the true diameter differs from 0.5 in.'

When the sample size is large and the standard deviation is known, the z-test is typically used.

The T-test is more flexible than the Z-test since the Z-test frequently needs particular circumstances in order to be reliable.

The t test is applied if the population standard deviation is unknown.

Test statistic for one sample t-test is, t = (X‾ - μ0) / (s / √n)
The formula of degrees of freedom for test is, df = n-1 here, n is sample size.

Decision rule:

1. If the P-value is less than the level of significance, the null hypothesis should be rejected; otherwise, it should not be.

2.The null hypothesis is rejected if the t-test statistic value is greater than the t tabulated value; otherwise, the null hypothesis is not rejected.

(a) From the given information, n=15, t=1.66, α =0.05 we can derive

degrees of freedom = df= n-1 which is 15-1 = 14

Thus, the critical value is, 2.145.

Now, since the test statistic value is less than the critical value, do not reject the null hypothesis.

Here, the test statistic value do not lie in the critical region. The null hypothesis cannot be rejected. There is insufficient evidence that the true diameter differs from 0.5 in.

(b) From the given information, n=15, t = -1.66, α =0.05 we can derive

degrees of freedom = df= n-1 which is 15-1 = 14

Thus, the critical value is, -2.145.
Now, since the test statistic value does not lie in the rejection region, do not reject the null hypothesis.
Here, the test statistic value does not lie in the critical region. The null hypothesis cannot be rejected. There is insufficient evidence that the true diameter differs from 0.5 in.

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