Which expressions represent “the sum of 3 and n”?

Select all that apply

The total number of monotonous positive integers either a strictly increasing or a strictly decreasing sequence is equal to 90.

Let us consider the cases of monotonous numbers with increasing digits and monotonous numbers with decreasing digits separately.

For a monotonous number with increasing digits, we can start with any digit from 1 to 9, and for each subsequent digit.

Choose any number from the set of remaining digits.

For example, if we start with 1, we have 8 choices for the second digit, 7 choices for the third digit, and so on.

Until we have only one choice left for the last digit.

There are a total of 9 + 8 + 7 + ... + 1 = 45 monotonous numbers with increasing digits.

For a monotonous number with decreasing digits, we can start with any digit from 9 to 1, and for each subsequent digit.

Choose any number from the set of remaining digits that is smaller than the previous digit.

For example, if we start with 9, we have only one choice for the second digit 8, one choice for the third digit 7, and so on.

Until we have only one choice left for the last digit.

There are a total of 9 + 8 + 7 + ... + 1 = 45 monotonous numbers with decreasing digits.

The number 0 cannot be the first digit of a monotonous number with increasing digits, because it is not a positive integer.

No need to consider this case separately.

Therefore, the total number of monotonous positive integers is 45 + 45 = 90.

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Answer:

m = 4

Y-intercept: 2

Step-by-step explanation:

8x + 4 = 2y

We rewrite the equation in slope-intercept form y = mx + b

m = the slope

b = y-intercept

8x + 4 = 2y

-2y + 8x + 4 = 0

-2y = -8x - 4

y = 4x + 2

m = 4

Y-intercept: 2

Rewriting the equation in slope-intercept form (y = mx + b) makes it easier to tell the slope and y-intercept. The rewritten form is y = 4x + 2. Since 'm' represents the slope, the slope of the equation is 4. 'b' represents the y-intercept, so the y-intercept is 2.

The probability that the weight of a randomly selected newborn baby boy born at the local hospital will be greater than 2620 grams is 0.9099 (rounded to four decimal places).

The probability can be calculated using the standard normal distribution as follows:

P(Z > (2620 - 3245) / 625) = P(Z > -1.335)

Using a standard normal distribution table, we find that the probability of Z being greater than -1.335 is 0.9099.

We use the standard normal distribution because we know the mean and standard deviation of the population of newborn baby boys' weights. We convert the raw score of 2620 grams to a z-score, which tells us how many standard deviations the raw score is away from the mean.

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If p is a prime number and a is a positive integer, then pa has (a+1) distinct positive divisors.

A prime number is a positive integer greater than 1, which is divisible only by 1 and itself. Divisors are the numbers that evenly divide a given number.

For a prime number p raised to the power of a (p^a), the number of distinct positive divisors can be found using the following formula:

Number of divisors = (a + 1)

This is because each power of p from 0 to a can divide p^a without any remainder, giving us a total of a + 1 distinct divisors. These divisors are:

1, p, p^2, p^3, ..., p^(a-1), p^a

For example, if p = 2 (a prime number) and a = 3 (a positive integer), then the number of distinct positive divisors for 2^3 (which is 8) would be:

Number of divisors = (3 + 1) = 4

The divisors for 2^3 (8) are 1, 2, 4, and 8.

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The required width of the flower garden is 6 feet.

The area of a rectangular flower garden is 132 square feet.

Let us assume the length of the flower garden is l and its width is w (in feet).

The length of the flower is 10 feet more than twice the width of the garden.

That is, l = (10 + 2w ) feet

Thus the area of the flower garden is ,

length * width = 132 sq ft

⇒ (10+ 2w) w = 132

⇒2w^2 + 10w -132 = 0

⇒ w^2 + 5w - 66 = 0

⇒ w^2 + 11w - 6w - 66 = 0

⇒ w( w+ 11) - 6( w + 11) = 0

⇒ (w - 6)(w + 11) = 0

⇒ w = 6 and = -11

Since length or width of any garden can not be in negative, hence ignoring the negative value of w.

Thus, width of the flower garden is w=6  feet.

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There are 120 different ways to award the gold, silver, and bronze medals to the 10 women in the 100 meters race.

The number of ways that the gold, silver, and bronze medals can be awarded to 10 women is a combination problem.

We can use the formula for combinations to determine the number of ways to choose 3 women out of 10 for the medals:

[tex]nCr = n! / (r! * (n - r)!)[/tex]

Where n is the total number of women (10) and r is the number of medals (3).

So, the number of ways to award the gold, silver, and bronze medals to the 10 women is:

[tex]10C3 = 10! / (3! * (10 - 3)!) = 120[/tex]

Therefore, there are 120 different ways to award the gold, silver, and bronze medals to the 10 women in the 100 meters race.

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The tent with the assumed parameters is tall enough for the sisters to stand up inside.

Assuming a reasonable height for a typical tent, which is around 6 feet, it should be tall enough for both sisters to stand up inside if they are both over 5 feet tall.

In this case, we can imagine the tent as a triangular prism, with the sloping sides forming a right triangle.

Let's call the height of the tent "h," the length of the base "b," and the length of the sloping side "s."

Using the Pythagorean theorem, we can write:

s^2 = h^2 + (b/2)^2

Since we know that each sister is over 5 feet tall, we can set h = 5 feet. We also know that the base of the tent is usually wider than it is tall, so we can assume a reasonable value for b, such as 8 feet.

Substituting these values into the equation above, we get:

s^2 = 5^2 + (8/2)^2

s^2 = 25 + 16

s^2 = 41

Taking the square root of both sides, we get:

s ≈ 6.4 feet

Since this is greater than the height of both sisters (which is 5 feet), we can conclude that the tent is tall enough for them to stand up inside.

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If the area of the base is 19. 6 ft^2 and the height of the pyramid is 11. 6 ft, the volume of the pyramid is approximately 79.1 cubic feet.

The formula for the volume of a pyramid is given by:

V = (1/3) × base area × height

In this case, we are given that the pyramid has a square base, so the base area is simply the area of a square with side length s:

base area = s^2 = 19.6 ft^2

We are also given the height of the pyramid:

height = 11.6 ft

Substituting these values into the formula for the volume of a pyramid, we get:

V = (1/3) × base area × height

= (1/3) × 19.6 ft^2 × 11.6 ft

≈ 79.1 ft^3 (rounded to the nearest tenth)

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The greatest number of 27-inch pieces that she can cut from three pieces of ribbon is found to be 19. So, option B is the correct answer choice.

Each yard is equal to 36 inches, so 5 yards are equal to 180 inches. Therefore, each piece of ribbon is 180 inches long.

To find out how many 27-inch pieces Lucia can cut from each piece of ribbon, we divide 180 by 27.

180/27 = 6.67

Since Lucia can only cut whole pieces, she can cut 6 pieces of ribbon from each piece of ribbon.

Therefore, she can cut a total of 6 x 3 = 18 pieces of ribbon from the three separate pieces of ribbon.

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The balance of the account after all the deposits is given as follows:

B = 800.25 + x + y + b.

The balance of an account refers to the amount of money that is currently in the account, taking into account all the transactions that have been made on the account, that is, adding all the money that has been deposited on the account.

Considering the initial balance of the account of b dollars, plus all the deposits listed on the problem, the expression is given as follows:

B = 750.25 + x + y + 100 + b

B = 800.25 + x + y + b.

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Answer:

Step-by-step explanation:

6 greater than a number is 24.

This means adding 6 to a number, x, will equal 24.

6 + x = 24

subtract 6 from both sides of the equation, and you are left with x=18

18 is your answer!!

Answer: the 90% confidence interval for the mean number of tongue flicks per 20 minutes for all juvenile common lizards is (369.4, 588.6).

Step-by-step explanation:

In a haplodiploid system, the relatedness of a son to a maternal aunt is 75%.

In a haplodiploid system, males develop from unfertilized eggs and are haploid, while females develop from fertilized eggs and are diploid. This means that sons inherit all of their genetic material from their mother, including her alleles from both her haploid sets of chromosomes. Maternal aunts, on the other hand, share one set of haploid chromosomes with their nephew (the son), as they are the sister of his mother. Therefore, the relatedness between a son and his maternal aunt in a haplodiploid system is 0.75 or 75%.

In a haplodiploid system, the relatedness of a son to a maternal aunt can be calculated using the following steps:

1. Determine the relatedness of the son to his mother: In haplodiploid systems, sons are haploid and inherit their single set of chromosomes from their mother. This means that they are 100% related to their mother, as they share all her genes.

2. Determine the relatedness of the maternal aunt to the son's mother: The maternal aunt is a sister of the son's mother. In haplodiploid systems, sisters share 75% of their genes, as they get half of their genes from their mother and the other half from their father (who, as a haploid male, gives all his genes to his daughters).

3. Calculate the relatedness of the son to his maternal aunt: To determine the relatedness of the son to his maternal aunt, multiply the son's relatedness to his mother (100%) by the maternal aunt's relatedness to the son's mother (75%).

Relatedness of son to maternal aunt = (1.0) * (0.75) = 0.75 or 75%

So, in a haplodiploid system, the relatedness of a son to a maternal aunt is 75%.

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There are 67,108,863 outcomes in which at least one head occurs if a fair coin is tossed 26 times.

The probability of getting tails on any given toss is 1/2, so the probability of getting tails on all 26 tosses is (1/2)^26. Therefore, the probability of getting at least one head is

1 - (1/2)^26 ≈ 0.999999999996

So there are almost 100% chance of getting at least one head in 26 coin tosses. To find the number of outcomes that satisfy this condition, we can use the formula for combinations

ⁿCₓ = n! / (x! * (n-x)!)

where n is the total number of trials (26 in this case), x is the number of successes (at least 1 head), and ! denotes the factorial function (e.g., 5! = 54321).

Using this formula, we get

26C1 + 26C2 + ... + 26C26

which simplifies to

2^26 - 1 = 67,108,863

So there are 67,108,863 outcomes in which at least one head occurs in 26 coin tosses.

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a. the simplified expression in standard form is -40p² + 6200p - 153000.

b.  the monthly profit is $87250.

What is profit?

The revenue generated from selling a good is referred to as the profit, and it must exceed the cost of the good. In other terms, a gain from any business activity constitutes a profit.

Here, we have

Given: The relationship between monthly profit P, monthly sales n, and unit price p is P = n(p−U)−F. For an online business advice service, the unit cost is $30 per hour-long session and the monthly fixed cost is $3000.

a.

P = n(p−U) − F.....(1)

n = 5000−40p, U = 30, F = $3000

We substitute the all values in equation(1) and we get

P = (5000−40p)(p-30) - 3000

P = 5000p - 150000 - 40p² + 1200p - 3000

P = -40p² + 6200p - 153000

Hence, the simplified expression in standard form is -40p² + 6200p - 153000.

b. When unit price, p, is $77.50.

= -40(77.5)² + 6200(77.5) - 153000

= -240250 + 480500 - 153000

= 87250

Hence, the monthly profit is $87250.

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The expression that is equal to (7b)c is option D, 7(bc).

The expression (7b)c means that 7b is being multiplied by c.

So, the expression that is equal to (7b)c is option D, 7(bc).

In the expression (7b)c, 7b is being multiplied by c.

To simplify this expression, we can use the associative property of multiplication, which states that the way we group the factors does not affect the result of the multiplication.

Therefore, we can write (7b)c as 7(bc), which shows that 7 is being multiplied by the product of b and c.

This is represented by option D, 7(bc). The other options do not represent the correct multiplication of 7b and c.

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The property used to simplify the expression is the Commutative Property of Addition, which states that changing the order of addends does not change the sum.

The Commutative Property is a property of operations that states that the order in which two numbers are added or multiplied does not affect the result. In other words, the property says that changing the order of the terms being added or multiplied will not change the final answer.

The property that was used to simplify the expression is the Commutative Property of Addition. This property states that the order in which we add two numbers does not affect the result. In other words, if we have two numbers a and b, then a + b is equal to b + a.

In the given expression, we have two terms, 3c and 4c, that are being added together. By applying the Commutative Property of Addition, we can rearrange the terms to get 4c + 3c. This gives us the simplified expression 7c + 9.

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The volume of the given rectangular prism is 27.6 cubic cm.

Length of the prism = 4⅗ cm

Width of the prism = 3 cm

Height of the prism = 2 cm

Volume of the rectangular prism = length × width × height

= 4⅗ × 3 × 2

= 23/5 × 6

= 138/5

= 27.6 cm³

In conclusion, the rectangular prism has the volume 27.6 cm³

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The area of the sector with angle 50 degrees is determined as 9.15 cm².

The radius of the circle is calculated as follows;

Area of sector = θ/360 x πr²

where;

Area of sector = θ/360 x πr²

56.87 =  310⁰/360  x  πr²

56.87 = 2.71r²

r² = 56.87/2.71

r² = 20.985

r = √(20.985)

r = 4.58 cm

The area of the minor arc is calculated as follows;

A = 50/360 x π(4.58)²

A = 9.15 cm²

Thus, the area of the minor arc is determined as 9.15 cm².

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Step-by-step explanation:

24 times, as there are no orange marbles in the set.

so, every pull will produce a marble that is not orange with 100% certainty.

in general, we have 12 marbles.

let's change the problem description into picking a marbles that is not blue.

we have 6 blue marbles.

the chance to pick a blue marble is therefore 6/12 = 1/2.

and the probability to not pick a blue marbles is 1 - 1/2 = 1/2.

so, in 24 pulls, we expect 24× 1/2 = 12 times to get a marble that is not blue.

or change it to "not green" marbles.

5 green marbles.

the probability to pick a green marble is 5/12.

the probabilty to not pick a green marble = 1 - 5/12 = 7/12.

in 24 pulls we expect 24 × 7/12 = 14 times to get a marble that is not green.

it change it to "not purple" marbles.

1 purple marble.

the probability to pick a purple marble is 1/12.

the probabilty to not pick a purple marble = 1 - 1/12 = 11/12.

in 24 pulls we expect 24 × 11/12 = 22 times to get a marble that is not purple.

The total areas of each composite shape are:

1) 121 in²

2) 150m²

3) 14.03 ft²

4) 538.36 cm²

1) Formula for area of a rectangle is:

Area = Length * width

Thus:

Area of composite shape = (9 * 8) + (7 * 7)

= 121 in²

2) Formula for area of rectangle is:

Area = Length * width

Area = 12 * 5 = 60 m²

Area of triangle = ¹/₂ * base * height

Area = ¹/₂ * 12 * 15

Area = 90 m²

Area of composite shape = 60 + 90 = 150m²

3) Area of triangle = ¹/₂ * 3 * 7 = 10.5 ft²

Area of semi circle = ¹/₂ * πr²

= ¹/₂ * π * 1.5²

= 3.53 ft²

Total composite area = 10.5 ft² + 3.53 ft²

Total composite area = 14.03 ft²

4) Total composite area = (¹/₂ * π * 7.5²) + (30 * 15)

= 538.36 cm²

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There are 26,000 distinct license plates that can be issued consisting of one letter followed by a three-digit number.

To find the number of distinct license plates that can be issued consisting of one letter followed by a three-digit number, we need to consider the number of possibilities for each element of the license plate.

For the first element, there are 26 possible letters in the alphabet (assuming only English letters are used).

For the second element, there are 10 possible digits (0 to 9) that can be used.

For the third element, there are also 10 possible digits that can be used.

For the fourth element, there are again 10 possible digits that can be used.

Therefore, to find the total number of distinct license plates, we need to multiply the number of possibilities for each element:

26 × 10 × 10 × 10 = 26,000

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The pair of required complementary angles are 26.2° and 63.8° respectively.

Two angles are said to be supplementary angles because they combine to generate a linear angle when their sum is 180 degrees.

When two angles add up to 90 degrees, however, they are said to be complimentary angles and together they make a right angle.

If the total of two angles is 90o (ninety degrees), then the angles are complementary.

A 30-angle and a 60-angle, for instance, are two complementary angles.

So, to find the 2 angles which are complementary:

x + x + 37.6 = 90

Now, solve it as follows:

x + x + 37.6 = 90

2x = 90 - 37.6

2x = 52.4

x = 52.4/2

x = 26.2

Now, x = 26.2 and the second angle x + 37.6 is = 26.2 + 37.6 = 63.8°.

Therefore, the pair of required complementary angles are 26.2° and 63.8° respectively.

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Ruben House is approximately 5.32 Km far than the Bank.

From the relation of the triangle we get,

c² = a² + b² - 2ab*cos(C)

where a, b, c are the side lengths opposite to the angles A, B and C respectively.

The diagram of the route of Ruben will be -

In figure A represents the Ruben's house and B represents the Bank and C represents the Store.

So here the distance from the Ruben house to store is (AC) = 37.5 km (given)

The distance of the store to the bank is (BC) = 34.5 Km

The angle ACB will be = 7 degree

We have to find the distance between the Ruben House and the Bank that is the value of AB.  

So,

AB² = AC² + BC² - 2*AC*BC*cos(angle ACB)

AB² = (37.5)² + (34.5)² - 2*37.5*34.5*cos(7)

AB² = 28.29

AB = [tex]\sqrt{28.29}\approx[/tex] 5.32 (Rounding up to two decimal places)

Hence the distance between Ruben's House and the Bank is approximately 5.32 Km.

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The question in English will be -

"Rubén leaves his house in his car and arrives at the store that is 37.5 km away. But remember that first you have to go to the bank to withdraw money, so turn 7th. If the bank located 34.5 km. Of the store. How far in km is Rubén's house from the bank?"

To calculate the probability of selecting a boy or a red-haired person as a homeroom representative to student council, we need to find the probability of each event and then use the formula P(A or B) = P(A) + P(B) - P(A and B).

There are 31 students in total (16 girls + 15 boys). The probability of selecting a boy is 15/31.

There are 5 red-haired students (3 girls + 2 boys). The probability of selecting a red-haired person is 5/31.

However, we need to account for the overlap between boys and red-haired students. There are 2 red-haired boys, so the probability of selecting a red-haired boy is 2/31.

Now we can use the formula: P(boy or red-haired) = P(boy) + P(red-haired) - P(boy and red-haired) = (15/31) + (5/31) - (2/31) = 18/31.

So, the probability of selecting a boy or a red-haired person as a homeroom representative to student council is 18/31.

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A line graph would be an appropriate data display to show the average height of all the plants during the month and how the heights vary.

A line graph is a visual representation that displays the relationship between two variables, in this case, the weekly heights of the sunflowers and the time in weeks. The x-axis would represent the weeks, and the y-axis would represent the height in inches. The line graph would show the trend in the data over time, and it would be easy to see how the heights of the sunflowers change over the weeks. Additionally, it would be possible to calculate the average height of all the plants during the month by adding up the heights of all the plants at each time point and dividing by the total number of plants. This average could then be represented on the graph as a horizontal line, showing how it compares to the actual heights of the sunflowers. Furthermore, the line graph could also be used to show the variability in the data by plotting error bars around the average line or displaying individual data points as dots or small lines. This would allow viewers to see how much the heights vary between plants and how consistent the growth is over time.

Here,

In summary, a line graph would be an appropriate data display to show the average height of all the plants during the month and how the heights vary. It would allow viewers to easily see the trends in the data over time, and how much the heights vary between plants, making it a useful tool for visualizing the growth of sunflowers.

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In the given equation r = 2/5 t "r" is the dependent variable.

In mathematics, a variable is a symbol that represents a quantity that can take on different values. In many cases, variables can be divided into two types: dependent variables and independent variables.

An independent variable is a variable that can be changed freely, and its value is not dependent on any other variable in the equation.

A dependent variable is a variable whose value depends on the value of one or more other variables in the equation

Here we have

Lin notices that the number of cups of red paint is always  2/5 of the total number of cups.

She writes the equation r = 2/5 t to describe the relationship.

In the equation, r = 2/5 t, "t" represents the total number of cups, while "r" represents the number of cups of red paint.

Here "t" is the independent variable because it represents the total number of cups, which can be changed arbitrarily.

The value of "r" depends on the value of "t" because the number of cups of red paint is always 2/5 of the total number of cups.

Therefore,

In the given equation r = 2/5 t "r" is the dependent variable.

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Complete Question:

Lin notices that the number of cups of red paint is always  2/5 of the total number of cups. She writes the equation r = 2/5 t to describe the relationship. Which is the independent variable? Which is the dependent variable? Explain how you know.

The square meters in square feet is 1026 square feet

To convert square meters to square feet, we need to multiply the number of square meters by the conversion factor of 10.8 square feet per square meter.

So, the number of square feet in 95 square meters can be calculated as:

95 square meters x 10.8 square feet per square meter = 1026 square feet

Therefore, 95 square meters of carpeting is equivalent to 1026 square feet of carpeting.

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