a cycle shop gave away 5000 miniature cycles and bumper stickers. the cycles cost 0.62 each and the bumper stickers cost 0.52 each. the cycle shop spent $2798 on the gifts. how many of each gift did they buy>

Gender and ethnicity are categorical variables and therefore, the standard deviation cannot be calculated for variables.

The standard deviation is a measure of the spread or dispersion of the data around the mean. In other words, it tells us how far each data point in a set is from the average of the set.

When we analyze data, it's important to understand how much variation there is in the data, and the standard deviation is one way to do this.

When it comes to the three dependent variables in the data set (gender, age, and ethnicity), it is important to understand that the standard deviation is only calculated for numerical data.

However, age is a numerical variable, and the standard deviation can be calculated for it.

To find the standard deviation of the ages, we need to first find the mean of the ages and then subtract each age value from the mean and square the result.

Next, we add up all the squared deviations and divide by the number of ages minus one. Finally, we take the square root of the result, and that gives us the standard deviation of the ages in the data set.

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Answer:

positive

Step-by-step explanation:

3/5 + 3/5 = 6/5   positive

Cost of 1 shirt=$7.5 and 1 pant cost=$18.5

A linear equation is an equation where the optimal strength of the variables is usually unity. 1 Diploma Also known as the equation. The trend form of a single-variable linear equation is of the form Ax + B = 0. where x is a variable, A is a coefficient, and B is a constant. The trendy form of linear equations in variables is of the form Ax + By = C. where x and y are variables, A and B are coefficients, and C is a constant. 

Now for the given Question:

Let the cost of shirt and pant be x and y respectively.

Then the linear equations will be;

3x+5y=115          (1)

4x+3y=85.5        (2)

Now we will balance the coefficient of x in both the equation so

multiplying equation 1 and 2 with 4 and 3 respectively then the equations become,

12x+20y=460          (3)

12x+9y=256.5          (4)

subtracting equation 4 from 3 we get

11y=203.5

y=203.5/11

y= $18.5

substituting above value of y in equation 1 we get

4x+5*18.5=85.5

4x+55.5=85.5

4x=85.5-55.5

4x=30

x=30/4

x=$7.5

Hence cost of shirt and pant are $7.5 and $18.5 respectively.

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The system of equations has unique solution (4, -17).

A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.

The given system of equations are y=-6x+7--------(I) and 4x+3y=-35 --------(II).

Substitute equation (I) in equation (II0, we get

4x+3(-6x+7)=-35

4x-18x+21=-35

-14x=-56

x=4

Substitute x=4 in equation (I), we get

y=-6(4)+7

y=-24+7

y=-17

So, solution is (4, -17)

Here, a₁=6, b₁=1, c₁=-7

a₂=4, b₂=3 and c₂=35

Now, 6/4 = 1/3

3/2≠1/3

Equations has unique solution (Intersecting lines)

Therefore, the system of equations has unique solution (4, -17).

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If the area of the circular base of a cone is 9π cm².  lateral area of the cone is 36π cm² and the  the total surface area painted black is approximately 43.2π square feet.

1. Let's call the radius of the circular base "r". The area of the circular base is 9π, so:

r² = 9

r = 3

Since the slant height is four times the radius, the slant height is 4 * 3 = 12.

The lateral area of a cone can be calculated using the formula:

A = π * r * l

Where:

r = radius

l = slant height

Plugging in the values, we get:

A = π * 3 * 12

A = 36π

2. Let's call the radius of each cone "r" and the circumference of the base of each cone is 8π, so:

2 * π * r = 8π

r = 4

The lateral surface area of a cone can be calculated using the formula:

A = π * r * l

Where:

r = radius

l =slant height

Plugging in the values, we get:

A = π * 4 * 12

A = 48π

Since 70% of the lateral surface area is painted red, 30% is painted black. So, the total surface area painted black for each cone is:

0.3 * 48π

= 14.4π

And the total surface area painted black for all three cones is:

3 * 14.4π

= 43.2π

Therefore   the approximate lateral area of the cone is 36π cm² and the total surface area painted black is approximately 43.2π square feet.

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13.2% of 200 would be 26.4

A percentage is a figure or ratio stated as a fraction of 100 in mathematics. It is frequently represented by the percent sign, "%".

A percentage is a dimensionless number; it has no unit of measurement

13.2% of 200 would be:

13.2% is represented as:

13.2/100

Thus, 13/100 * 200 would be 26.4

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13.2% of 200 = ?

What is 13.2 percent of the number 200

The number of votes received by Candidate B is given as follows:

56 votes.

A proportional relationship is defined as follows:

y = kx.

In which k is the constant of proportionality.

The input and output variables for this problem are given as follows:

Hence the constant of the relationship is given as follows:

k = 35/20

k = 1.75.

Meaning that the equation is given as follows:

y = 1.75x.

If Candidate A received 32 votes, the number of votes received by Candidate B is given as follows:

y = 1.75 x 32

y = 56 votes.

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Answer:

56

Step-by-step explanation:

took test

Volume of figure A is 1375 cu ft

A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size.

Given,

Figure A ~ Figure B

In Figure A R = 5.

In Figure B R = 2.

Scale factor between Figure A and Figure B = 5/2

Volume of B = 88 cu ft

πR²h = 88

π2²h = 88

h = 88/4π

h = 22/π

Height of figure A = 5/2×height of figure B

Volume of figure A

= πR²h

= π5²×5/2×22/π

= 125 × 11

= 1375 cu ft

Hence, 1375 cu ft is volume of figure A.

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Answer: $1,393.00

Step-by-step explanation:

Using Compound Interest, The population of bears would be 1851 after 8 years with 2% increase every next year.

Compound interest is defined.

Savings interest that is calculated on both the principal and the interest accrued over the course of prior periods is called compound interest. The monthly compound interest formula is used to get the compound interest every month. The formula for compound interest is as follows: CI = P(1 + (r/12)). 12t - P, where t is the passing of time, P is the total amount of the principal, and r is the interest rate in decimal form.

Formula: Amount = P(1+r/100)ⁿ

where, P is principle

r is rate of increase in the given time period

n is time in years

Given that,

P = 1580

r = 2%

n = 8 years

∴ Population of bear  = 1580(1 + 2/100)⁸

                                 = 1580(1+0.02)⁸

                                 = 1580(1.02)⁸

                                 = 1580(1.171)

                                 = 1851

Thus, the population of bears would be 1851 after 8 years.

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The probability of getting a specific poker hand, consisting of five cards, dealt from a well-shuffled standard deck (no joker cards) can be found by using combinations and permutations.

The number of ways to choose five cards from a deck of 52 is given by the combination formula :

C(52,5) = 2,598,960

To find the number of ways to get a specific hand, we need to consider the number of ways to arrange the cards in that hand, which is given by the permutation formula :

P(5,5) = 5!.

For example, to find the probability of getting a straight flush, which is five cards of the same suit in numerical order, there are 4 possible suits, and 10 possible ways to get a straight (A, 2, 3, 4, 5; 2, 3, 4, 5, 6; ...; 9, 10, J, Q, K).

Therefore, the probability of getting a straight flush is:

4 * 10 / C(52,5) = 0.00139.

To find the probability of other hands, such as a flush, a full house, etc., we need to follow a similar process of counting the number of ways to get that hand and divide it by the total number of possible hands.

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Answer:

x=-91

Step-by-step explanation:

So to solve, 42= -x/7+29 we first have to simplify both sides:

42= -1/7x+29

Then we have to flip the equation:

-1/7x+29=42

Okay so now we subtract 29 from both sides:

-1/7x=13

Now we Multiply both sides by 7/(-1)

And your final answer is = -91

To check input x:

42=-91/7+29

and you end up with 42

42=42

so its correct

Answer: -735

Step-by-step explanation:

735 feet below sea level is just 735 below 0, so -735 :)

well, the change is just 14.99 - 9.99 = 5 bucks.

now, the change in relation to the original price, that is 14.99(origin amount) which is the 100%, what is 5 off of it in percentage?

[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} 14.99 & 100\\ 5& x \end{array} \implies \cfrac{14.99}{5}~~=~~\cfrac{100}{x} \\\\\\ 14.99x=500\implies x=\cfrac{500}{14.99}\implies x\approx 33.36[/tex]

The line created is a good representation of a line of best fit

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

The graph

On the graph, we can see that the line divides the points on the line evenly

A good line of best fit would have approximately equal number of points on either sides

Hence, the line is a good representation

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The number 125 is a 41st term of the sequence defined by the explicit rule f(n) = 3n + 2.

A series of integers called an arithmetic progression or arithmetic sequence (AP) has a constant difference between the terms.

Given:

The sequence defined by the explicit rule,

f(n) = 3n + 2.

The number 125 is a term of the sequence.

To find the term,

125 = 3n + 2

3n = 123

n = 41

Therefore, the term is 41.

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Answer:

angle 4 is 44°

Step-by-step explanation:

180-93=87 (straight line)

180-49-84=44 (triangle)

Juwan travelled distance of 36 miles from his home before his tire went flat.

Distance is inversely correlated with time.

Distance = rate*time

d = rt

into town: d = 6t

back home: d = 3(18-t)

As the distance equal to d.

6t = 3(18-t)

6t = 54 - 3t

6t + 3t = 54

9t = 54

t = 6 hours.

So, the distance;

d = 6*6 = 36 miles

Thus, Juwan travelled 36 miles from his home before his tire went flat.

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In conclusion, the length and structure of the human ear canal affect hearing by amplifying specific frequencies of sound and shielding the inner ear from strong sounds.

The measurement or expanse of something from end to end is defined as length. In other terms, it is the greater of the two or the highest of three geometrical forms or objects' dimensions. A rectangle, for example, has length and width dimensions.

Here,

The human ear canal is 2.5 cm long on average, and its form and length are crucial in hearing. Sound waves enter the ear canal and are directed towards the eardrum, which vibrates. These vibrations are subsequently conveyed to the middle ear bones, which enhance and transport the sound to the inner ear. The length and structure of the ear canal aid in the amplification of some frequencies of sound over others, a phenomenon called as resonance. This resonance improves the ear's capacity to detect particular sounds, such as speech, and makes them easier to hear.

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The roots of the quadratic equation, x²+4x+1=0, are x = -2+√3 or -2-√3

The quadratic formula is a formula that provides the solution(s) to a quadratic equation.

Quadratic formula :-

x = -b±√b²-4ac / 2a

Given that, a quadratic equation, x²+4x+1=0, we need to solve it by using quadratic formula,

Quadratic formula :-

x = -b±√b²-4ac / 2a

Here, a = 1, b = 4 and c = 1

Therefore,

x = -4±√4²-4×1×1 / 2

x = -4±√16-4 / 2

x = -4±√12 / 2

x = -4±2√3 / 2

x = -2±√3

Therefore, x = -2+√3 or -2-√3

Hence, the roots of the quadratic equation, x²+4x+1=0, are x = -2+√3 or -2-√3

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The question was incomplete, so I solved for,

Solve the following quadratic equation by using quadratic formula method: x²+4x+1=0

Answer:

C

Step-by-step explanation:

test taking strategy:

1.25 is bigger than 50p

so any fractions with top smaller than bottom is wrong

so eliminate A and D

B & C remaining

B = 4

4*50p = 2 pounds, so it's wrong

C is right.

double check:

1.25 / 50 = 2.5 = 5/2 correct

Answer:

y = -0.916 * (1 - 0.140)^t

Step-by-step explanation:

f(t) = 0.4 * (1.16)^(t - 1)

To rewrite the equation in the form y = a(1 + r)^prime or y = a(1 - r)^prime, we can take the natural logarithm of both sides:

ln(f(t)) = ln(0.4) + (t - 1)ln(1.16)

ln(f(t)) = ln(0.4) + tln(1.16) - ln(1.16)

So,

y = ln(0.4) + tln(1.16)

Now we can rewrite this in the desired form by letting a = ln(0.4) and r = ln(1.16):

y = a + t * r

a = ln(0.4) = -0.916

r = ln(1.16) = 0.140

So,

y = -0.916 + 0.140 * t

y = -0.916 * (1 - 0.140)^t

This form of the equation shows that the function f(t) represents exponential decay. The value of "a" represents the initial value of f(t) and "r" represents the decay rate. Since r is negative, the function decreases over time, which means that the function represents exponential decay.

Answer:

1. angle BAC and angle CAD are a linear pair. This means they both angle measures add up to 180 degrees.

2. 180= x + 132

3. 132+48 = 180

4. Angle BAC= 48 degrees.

Step-by-step explanation:

2. To solve for x, subtract 132 from both sides.

The mean is the least appropriate measure of central tendency for data sets that contain outliers.

The correct option is a.

The average of a group of variables is referred to as the mean in mathematics and statistics. There are several methods for calculating the mean, including simple arithmetic means (adding the numbers together and dividing the result by the number of observations), geometric means, and harmonic means.

Given:

These numbers, which were determined from the ranking data, are not affected by outliers.

In contrast, the mean is determined by utilizing all the data.

Additionally, mean is sensitive to outliers.

Therefore, if the data set contains outliers, the mean is the least suitable measure of central tendency.

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The 24% of the calories in one slice of pizza come from fat.

To find the percentage of calories from fat in one slice of pizza, we use the formula:

(Calories One gram of fat provides 9 calories, so 8 grams of fat provide 8 x 9 = 72 calories.

Therefore, the percentage of calories from fat in one slice of pizza is:

(72 / 300) x 100 = 24%

Calories are units of energy that a food or drink produce. we can normally find calorie numbers listed on food items, and wearables like the best fitness trackers allow you monitor how many calories you are burning by doing different activities.

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The required probability of the son with normal vision is 0.50 and for the normal  blood clotting is 0.

Parent phenotype                                         Carrier woman

Affected man (Hemophilic)                           (colorblindness)

Parents X^h Y                                                    XX^C

Gametes X^h, Y X, X^C

Progeny                      X X^h       X^C X^h        X^C Y,       XY

Total outcome = 100

Favourable outcomes for a son with normal vision is= 50

Probability of a son with normal vision = 50/100

                                                                = 0.50

probability of a son with normal blood clotting = 0 / 100

                                                                             = 0

Therefore, the probability of the son with normal vision and normal blood clotting is 0.50 and 0 respectively.

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