Hello I need some help with math

Answer:

Step-by-step explanation:

The common ratio that Yui should use in her recursive formula is 1.05. This is because each month's total is 5% greater than the previous month's total, which can be represented as 1 + (0.05) = 1.05.

Sarah's new total cost will be $1,685.73 including 15% gratuity.

To find the new total cost, we can first calculate the cost of shipping, which is 2% of the total cost of the computer repair.

Shipping = 2% * 1,444.50 = 28.89

We can then subtract the shipping cost from the original total cost to find the cost of the computer repair, excluding shipping.

Computer repair cost (excluding shipping) = 1,444.50 - 28.89 = 1,415.61

Now we can add the 15% gratuity to the cost of the computer repair, excluding shipping:

Gratuity = 15% * 1,415.61 = 212.34

Finally, we can add the gratuity and shipping cost back to the original cost of the computer repair to find the new total cost:

New total cost = 1,444.50 + 28.89 + 212.34 = $1,685.73

So, Sarah's new total cost will be $1,685.73 including 15% gratuity.

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Yes, the ordered pairs (child number, amount paid) represent a function.

A function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

Number of children = 20

Cost per children = $2

Now,

The ordered pairs are:

(1, 2), (2, 4), (3, 6), (4, 8), (5, 10), (6, 12), (7, 14), (8, 16), (9, 18), (10, 20),

(11, 22), (12, 24), (13, 26), (14, 28), (15, 30), (16, 32), (17, 34), (18, 36), (19, 38), (20, 40)

The ordered pairs are a function.

A function can be one-to-one or many-to-one but not one-to-many.

We see that the ordered pairs are one-to-one.

Thus,

The ordered pairs are functions.

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The first five terms of the sequence [tex]a_n = 3n/(n+4)[/tex] are:

3/5, 3/4, 9/7, 3/2, 15/9.

What is a sequence?

A sequence in A.P stands for "Arithmetic Progression" which is a sequence of numbers in which each term is the sum of the previous term and a constant called the common difference.

Now the given expression is

To find the first five terms of the sequence [tex]a_n = 3n/(n+4),[/tex] we need to substitute the values of n from 1 to 5 and solve for [tex]a_n[/tex].

a1 = 3*1/(1+4) = 3/5

a2 = 3*2/(2+4) = 3/4

a3 = 3*3/(3+4) = 9/7

a4 = 3*4/(4+4) = 12/8 = 3/2

a5 = 3*5/(5+4) = 15/9

Hence, the first five terms of the sequence [tex]a_n = 3n/(n+4)[/tex] are:

3/5, 3/4, 9/7, 3/2, 15/9.

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8 laps time 1/4 mile is 2 miles .

Average speed in miles per hour:

2 mi / 12.5 min * 60 min/hour = 9.6 mph

Average velocity is zero, since velocity is directional and the person jogged around a track. [I mention that in case this was set up as a trick question.]

But if we're really looking for average speed in m/s we can easily convert:

A mile is about 1.6 km, so it's about 1600 m.

(2 mi * 1600 m/mi) / (12.5 min * 60 s/min) = 1800 / 750 = 2.4 m/s

The directional speed of an item in motion, as measured by a specific unit of time and observed from a certain point of reference, is what is referred to as velocity.

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Answer:

Step-by-step explanation:

As DY is parallel to FS  which is  DJ/FD = JY/SY.

50/x  = 42/63.

1/x = 42/(50 × 63)

x = (50 × 63)/42

x = 3150/42

x = 75 units

Answer:

Step-by-step explanation:

Use proportion- 63/42 as x/50

Use cross multiplication  63 times 50 = 42 times x

3150 = 42x

3150 divided by 42 = 75

The answer is:  x= 75

The required number of tiles required is 100

as per detail stated above,

the length of the side of the square tile is (s) = 5m

the length of the side of the square pavement (S) is 50m

the area of square tile whose side length is 5 m is

area = side (s) times side (s)

area = 5 x 5

area = 25

now the second area

the area of the square pavement whose side length is 50m is

area = side (s) times side (s)

area = 50 x 50

area = 2500[tex]m^2[/tex]

now to find

the required number of tiles  = area of the square pavement by the area of the square tile

therefore

the required number of tiles are =

=> 2500/25

=> 100

therefore the required number of tiles are 100.

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The final function after transformations, is [tex]f(x +8) = \sqrt[3]{x+8} - 3[/tex]

The technique of altering an existing graph or graphed equation to create a different version of the following graph is known as graph transformation. The modification of algebraic equations is a typical form of algebraic problems. Sometimes graphs are translated, or moved about the xy-plane; sometimes they are stretched, rotated, inverted, or a combination of these transformations.

Now, there are 2 different transformations applied to the function here.

First Transformation:

[tex]f(x) = \sqrt[3]{x}[/tex] is translated 3 units in the negative y direction.

After transformation, the function is [tex]f(x) = \sqrt[3]{x} - 3[/tex].

Second Transformation:

The function [tex]f(x) = \sqrt[3]{x} - 3[/tex] is translated 8 units in the negative x direction.

After transformation, the function is [tex]f(x +8) = \sqrt[3]{x+8} - 3[/tex].

Therefore, the final function, after transformations, is [tex]f(x +8) = \sqrt[3]{x+8} - 3[/tex].

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Therefore , the solution of fraction problem is number of guests in the dinner were 72.

A fraction is referred to as the portion of a whole in mathematics. For instance, if a pizza is cut into four equal pieces, each one is represented by a quarter. Fractions make calculations quicker and easier by making it easier to distribute and judge numbers.

Here,

Given :

Let the number of guests be x,

2 persons shared a can of beer. 3 persons shared a jar of fruit punch. 4 persons shared a bottle of wine ++78

12+8x+6x 24

26x = 1872

x = 72

= 78

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This is an experimental study, as the researcher is manipulating the independent variable (caffeine consumption) to measure the dependent variable (activity level) in a controlled environment.

This is an experimental study, as the researcher is manipulating the independent variable (caffeine consumption) to measure the dependent variable (activity level) in a controlled environment. In an experimental study, the researcher has control over the independent variable and is able to measure the results of the manipulation on the dependent variable. In this study, the researcher is measuring the activity level of the children based on their caffeine consumption, which the researcher can control. The researcher is also measuring the activity level in a controlled environment, the playground, which provides a consistent setting for the experiment. This type of study is designed to test the researcher's hypothesis and determine whether there is a relationship between caffeine consumption and activity level.

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Answer: We can use the formula for the sum of an arithmetic series to find the number of pages in the Funny Book. The formula is:

S = n/2 (2a + (n-1)d)

Where S is the sum of the series, n is the number of terms, a is the first term, and d is the common difference.

In this case, the series is the page numbers, a = 1, d = 1, and we know that there is no page numbered "21" but the page numbered "20" is there.

The number of pages numbered 20 is 20, and the number of pages numbered 19 is 19. So n = 20 + 19 = 39

By substituting the values into the formula

S = 39/2 (2*1 + (39-1)1) = 3920 = 780

The greatest number of pages that the Funny Book can have if it contains a page numbered 20 but not any that are numbered 21 is 780.

Step-by-step explanation:

The function f(x) = 4x/(x-16) has vertical asymptotes at x = 16.

To see this, we can factor the denominator:

f(x) = 4x/(x-16) = 4x/x - 16

As x approaches 16 from the left or right, the denominator x-16 approaches 0, but the numerator 4x does not. This means that the function approaches infinity or negative infinity as x approaches 16, indicating a vertical asymptote at x = 16.

To find the end behavior of the function, we can look at the behavior of the function as x approaches positive or negative infinity. We can see that f(x) = 4x/(x-16)

As x increases without bound, x-16 increases without bound. This means that the denominator becomes larger and larger, making the function approach 0 as x approaches positive infinity.

As x decreases without bound, x-16 decreases without bound as well, this means that the denominator becomes smaller and smaller, making the function approach 0 as x approaches negative infinity.

Therefore, the function has a vertical asymptote at x = 16 and approaches 0 as x approaches positive and negative infinity.

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Answer:

f(x) =. 4x/(x-16)

4x= 0 =>x=

x-16= 0

=>x=16

Asymptotes(x) =16

Step-by-step explanation:

Therefore , the solution of the given problem of speed comes out to be the average distance travelled is  225 meters.

We can determine how fast that anything is traveling by looking at it from a distance. The amount of distance an object can go in a given length of time depends on its speed. Velocity is calculated using the formula velocity = distance/time. The three most used units of speed are meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph) (mph).

Here,

Given :

Time =  40 seconds.

To find the distance:

We use speed and time formula

=> distance = speed * time

=> distance = 15 * 30

=> distance =  225 meters.

Therefore , the solution of the given problem of speed comes out to be the average distance travelled is  225 meters.

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Unsurprisingly, the general rule can be applied more broadly than the specific rule, which is the difference between the two. The specific rule is only applicable to dependent events; it applies to both independent and dependent events.

What is the main rule for multiplying?

Multiplication Rule The likelihood that both events A and B will occur if events A and B originate from the same sample space is equal to the probability that A will occur times the probability that B will occur provided that A has already occurred.

What is the rule for multiplying independent events?

The multiplication rule for independent events is the sixth rule of probability. P(A and B) = P(A) * P if A and B are two INDEPENDENT events (B).

                              P(A and B) = P(A) * P(B) is a special multiplication rule that is only applicable when the two occurrences are independent of one another. To put it another way, it only functions if the probability of one occurrence does not change for the other.

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The absolute value inequality for the hearing range of each animal is mod(e - 6008) ≤ 5992 and mod(m - 46000) ≤ 45000, respectively.

An absolute value equation has no solution if the absolute value expression equals a negative number since an absolute value can never be negative. You can write an absolute value inequality as a compound inequality. This holds true for all absolute value inequalities. You can replace > above with ≥ and < with ≤.

To solve absolute-value inequalities, first, we must drop the absolute-value bars and restate the inequality in one of two ways, depending on the case.

According to the question,

The elephant can hear: 16 ≤ e ≤ 12000

The avg hearing = (12000 + 16)/2 = 6008

Tolerance = 12000 - 6008 = 5992

Therefore, the value absolute value inequality for the hearing of the elephant is mod(e - 6008) ≤ 5992.

Similarly,

The mouse can hear: 1000 ≤ e ≤ 91000

The avg hearing = (12000 + 91000)/2 = 46000

Tolerance = 46000 - 1000 = 45000

Hence, the value absolute value inequality for the hearing of the mouse is mod(m - 46000) ≤ 45000.

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a) Maths was the third most popular subject, according to the chart showing the results for the most popular subjects using their percentages.

b) About 10 percent of the students chose Maths.

The percentage is the ratio of one variable or value compared to another.

Percentages are proportional values.  They are obtained as the quotient of one value (the numerator) divided by another value (the denominator) before being multiplied by 100.

Subject   Percentage

Art                 30%

History          20%

Maths            10%

Thus, based on the percentage of popular subjects, 10% chose Maths as the third most popular subject.

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a. To prove the product property for logarithms using a base of 3 and solutions of 3, 9, 27, 81, and 243, we can start with the equation: log3(xy) = log3x + log3y

Let's say we want to find log3(81 * 27)
We know that log3(81) = 4, and log3(27) = 3
So, log3(81 * 27) = log3(81) + log3(27) = 4 + 3 = 7

We can verify this by using the fact that we know the solution of log3(81*27) is 243, and 3^7 = 243.

b. To prove the quotient property for logarithms using a base of 3 and solutions of 3, 9, 27, 81, and 243, we can start with the equation: log3(x/y) = log3x - log3y

Let's say we want to find log3(81 / 27)
We know that log3(81) = 4, and log3(27) = 3
So, log3(81 / 27) = log3(81) - log3(27) = 4 - 3 = 1

We can verify this by using the fact that we know the solution of log3(81/27) is 9, and 3^1 = 9.

c. To prove the power property for logarithms using a base of 3 and solutions of 3, 9, 27, 81, and 243, we can start with the equation: log3(x^n) = n*log3x

Let's say we want to find log3(81^3)
We know that log3(81) = 4
So, log3(81^3) = 3 * log3(81) = 3 * 4 = 12

We can verify this by using the fact that we know the solution of log3(81^3) is 243, and 3^12 = 243.

In all the above examples, we can see that the properties are upheld, and we can use the log3(y) values of 3, 9, 27, 81, and 243 to prove the Product, Quotient and Power property of logarithms with base 3.

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By taking a difference, we will see that you can save $4.70 if you buy the pack.

To find the savings, we need to take the difference between the cost of the  6 times the cost of 1 bookshelf, and the cost of the 6 bookshelves.

The cost of 1 bookshelf is $14.95, and the cost of 6 together is $85.00, then the savings is given by:

S = 6*$14.95 - $85.00

S = $89.70 - $85.00

S = $4.70

You save $4.70 in total if you buy the pack.

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sin T as a fraction in simplest terms is 7/17

Trigonometry is a branch of mathematics dealing with the relationship between the ratios of the sides of a right-angled triangle with its angles.

Sin T = opposite/ hypotenuse

The opposite is where the angle T is facing. That is opposite = 7.

The hypotenuse is where the right angle is facing. That is hypotenuse = 17

Thus, Sin T = 7/17

We cannot further simply sin T.

Therefore, the value of sin T as a fraction in simplest terms is 7/17

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Therefore , the solution of the given problem of  expression comes out to be 15 years: 75 years

In mathematics, it is possible to multiply, divide, add, or remove. The construction of an expression is as follows: Expression, number, and mathematical operator Numbers, variables, and functions are the building blocks of a mathematical expression (such as addition, subtraction, multiplication or division etc.) Expressions and phrases can be contrasted. Any mathematical statement with variables, numbers, and an arithmetic operation between them is called an expression or an algebraic expression. For instance, the expression 4m + 5 has the terms 4m and 5 as well as the variable m of the supplied expression, all of which are separated by the arithmetic sign +.

Here,

an expression to represent a dog's age in dog years for a dog that is at least two years old in order to respond to the inquiry above. if x represents human age

then the dog is 2 years older

X = human years

x + 2 =  is for the dog age

For 75 years

15 years: 75 years

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This study is an example of an experimental study. The controlled factor is the group of patients.

The collection of data is gathered and chosen from a statistical population with the use of some prescribed techniques in both statistics and quantitative methodology. Data sets may be divided into two categories: sample and population.

All the components of the data set are included in the population, which also contains quantifiable qualities like mean and standard deviation.

A sample is made up of one or more observations that are taken from the population, and a statistic is what makes a sample quantifiable. The act of sampling is the selection of a sample from a population.

Complete question:

In a research study to test a new drug on patients with brain cancer, patients were divided into 2 groups randomly. One group received the drug and the other group did not receive the drug. After 6 weeks, the measured results showed reduction in symptoms among the first group who received the drug. Is this an example of an observational study or experimental study? If it is an experiment, what is the controlled factor?

Select the correct answer below:

The study is an observational study.

The study is an experiment.

The controlled factor is the symptoms of the disease.

The controlled factor is the group of patients.

The controlled factor is the type of drug given to each group.

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Answer:

a. The area of the square is 25 feet x 25 feet = 625 square feet.

b. To find the percent of points that landed in the pond, we divide the number of points that landed in the pond by the total number of points generated and multiply by 100.

3,200 points / 5,000 points = 0.64

0.64 x 100 = 64%

so 64% of the points landed in the pond.

c. To find the area of the pond, we multiply the proportion of points that landed in the pond by the area of the square.

64% of the points landed in the pond = 0.64

Area of the pond = 0.64 x 625 square feet = 400 square feet. So, the area of the pond, to the nearest square foot, is 400 square feet.

Step-by-step explanation:

The value of sin(π/6) is 0.50.

Trigonometric functions—also referred to as circular functions—are the functions of a triangle's angle. This means that these trig functions provide the relationship between the angles and sides of a triangle. Sine, cosine, tangent, cotangent, secant, and cosecant are the fundamental trigonometric functions.

Given the triangle DEF

and ∠E = π/6

converting the radian to the degree,

for conversion put π = 180°

π/6 = 180/6

π/6 = 30°

to find sin(π/6)

sin(π/6) = sin30 = 1/2

sin(π/6) = 0.50

Hence value for the condition is 0.50.

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The solution to the system of equations for this problem is given as follows:

(x, 3x - 27).

The system of equations for this problem is defined by these two equations presented as follows:

The first equation can be simplified as follows:

y = 3x - 27 = 3(x - 9).

Hence, substituting y = 3(x - 9) into the second equation, the solution for x can be obtained as follows:

x - 3(x - 9)/3 = 9.

x - x + 9 = 9

0x = 0.

As the system has the format 0x = 0, and considering that the division of 0 by 0 can assume any result different of zero, the system has an infinite number of solutions, in the following format:

(x, 3x - 27).

Meaning that the independent variable x is the free variable and the dependent variable y depends on the value of x.

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Answer: Undefined

Step-by-step explanation: any number divided by 0 gives no solution and therefore it is undefined, if u need more explanation then comment

Answer:

Undefined

Step-by-step explanation:

The sum of all possible values for the common ratio is -1/2.

The formula for a convergent infinite geometric series is:  Sum  =  a / (1 - r)

where a = first term and r = common ratio.

Given that,

The first term = -3/2  =>   a = -3/2

Since it sums to twice the common ratio,  Sum = 2r.

Putting these together   --->   2r  =  (-3/2) / (1 - r)                      

multiplying both sides by 1 - r:

2r(1 - r)  =  -3/2                              

multiplying both sides by 2:

4r(1 - r)  =  -3                                

multiplying out the left-hand side:

4r - 4r2  =  -3                                  

rearranging the terms:

0  =  4r2 - 4r - 3                              

factor:

0  =  (2r - 3)(2r + 1)

Either  r = 3/2  or  r = -1/2

Since an infinite geometric series converges only when  -1 < r < r,  the possible answer 3/2 must be rejected.

Thus, r = -1/2

Therefore, the sum of all possible values for the common ratio is -1/2.

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The pounds that they would have to each recycle so that they earned the same amount of money from the recycle center is 30 pounds.

Equations that depict the revenue from recycling electronics and appliances are:

The following calculation can be used to calculate how much money Solomon can make by recycling appliances:

p = $0.60a

Solomon's potential earnings from recycling electronics are represented by the equation p = $1.50e - $27.

Here,

p = amount earned

a = pounds of appliances recycled

e = number of electronics recycled

The equation that depicts Solomon's earnings when he makes the same amount of money would be the same as the equation that describes his earnings when recycling gadgets.

$1.50e - $27 = $0.60e

To determine the number of pounds:

Combine and add similar terms

$1.50e - 0.60e = $27

$0.90 = $27

Dividing both sides of the equation by 0.9, we get

$27/ 0.9 = 30 pounds

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The complete question is:

"After reading about earning money by recycling, Solomon and Marcus are excited to do some recycling themselves. Solomon has some electronics his parents said he could recycle. Marcus has permission to recycle some small household appliances. They looked online and discovered that the local recycling center offers $0.60 per pound for the appliances and $1.50 per pound for the electronics. But there is a $27 hazardous waste fee that has to be paid to recycle electronics, no matter how much you recycle.

Write one equation that represents how much Solomon would earn by recycling electronics. Write another equation that represents Marcus earns from recycling appliances. How many pounds would they have to each recycle so that they earned the same amount of money from the recycle center?"

Answer: 16

Step-by-step explanation:

First, calm down.

The area of the trapezoid cannot be found in a straightforward way.

Instead, what we need to do here is divide the trapezoid into two parts, a right triangle and a trapezoid.

Finding the area of the right triangle is easy. You just need to multiply the sides and divide it by 2.

Area of right triangle = 5*4/2 = 10

Next, you need to find the area of the trapezoid.

Area of trapezoid(small) = (2+1)*4/2 = 6

All you need to do now is add the area of these two together, and you get 16.

Answer:

A = 16 units²

Step-by-step explanation:

the area (A) of a trapezoid is calculated as

A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂ )

where h is the perpendicular height between the parallel sides b₁ and b₋₂

here h = 4 , b₁ = 6 and b₂ = 2

A = [tex]\frac{1}{2}[/tex] × 4 × (6 + 2) = 2 × 8 = 16 units²