how do you think you can find f(3) without using a graph?

Answer:

Step-by-step explanation:

Two different fractions where lowest common denominator is 20 are 1/4 and 1/5.

What are the lowest common denominator?

For two or more fractions, if the numbers at the bottom (or denominator) by which the lowest number can be divide into, is called the lowest common denominator. It is also known as the least common denominator.

Here, 20 is the given lowest common denominator. 

Therefore, we can write: 20 = 1 × 20, 20 = 2 × 10, 20 = 4×5

Hence, two fractions for which 20 can be a lowest common denominator are 1/4 and 1/5.

Hope it helps!

Research or Basic research is purely thoretical in  nature as its not easy to find its application in the real world. For example consider new theorems or  Formula in mathematics, its difficult to find their practical use right away as it takes time to find the fields where they may be applicable.

Practical research is more focused on solving a known problem hence its use is already known or easy to find as it is derived from real world only.

Like Research in development of new medicine is practical in nature as we know for whic disease we are trying to cure from it.

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The correct justification for moving from step 3 to step 4 in victor's solution is A. division property of inequality

According to the division property of equality, if we divide an equation's two sides by the same number, the equation doesn't change.

Let's say you have two identically sized pizzas. You divide each one into halves and serve your buddies one half of each pizza. You will have equal pieces of both pizzas left over if you measure

as regards the Victor's problem division of both sides of the equation by 2 is achieved by the division property of inequality

Instance of division property of inequality dividing by 2

Step 3: 2x > 10

Step 4: x > 5

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The example of descriptive statistics is d) 50% of the students surveyed spend at least two hours online each day.

Given:

a survey on internet usage was conducted among a group of 200 students in the school cafeteria. it was found that 100 students spend at least two hours online every day.

Here number of possible outcomes = 200

Number of favorable outcomes = 100

Probability p = 100/200

= 1/2

= 0.5

= 0.5*100%

= 50%

Therefore  50% of the students surveyed spend at least two hours online each day.

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Full question:

A survey on Internet usage was conducted among a group of 200 students in the school cafeteria. It was found that 100 students spend at least two hours online every day.Which of these is an example of descriptive statistics?a.) 50% of the students surveyed spend at least two hours online each day.b.) 50% of the students in the school spend at least two hours online each day.c.) 50% of the students in a class spend at least two hours online each day.d.) 50% of the students in the cafeteria spend at least two hours online each day.

Answer:

a. $77.5

b. 8 tickets

Step-by-step explanation:

a. Replacing x with 5 in the equation to get the cost of 5 tickets would look like this:

C(x = 5) = 17.5x - 10 = 17.5(5) - 10 = 87.5 - 10 = 77.5

b. There's no smart way to do this aside from picking a number of tickets that costs less that $130 and checking the total cost to buy another ticket until we go over $130

From a, we know that 5 tickets is $77.5

and every additional tickets costs $17.5

so 6 tickets is $77.5 + $17.5 = $95

so 7 tickets is $95 + $17.5 = $112.5

so 8 tickets is $112 + $17.5 = $130

The doubles plus one fact for 7 7  is 7+7+1=15.

In layman's terms, Double Plus One Fact is a strategy for adding two consecutive numbers (numbers that are next to each other). To get the final result, simply add a smaller number to itself or double it and add 1.

Doubles fact are the numbers which are added with itself. such as 5+5=10, 3+3=6

so the doubles plus one fact are nothing but adding 1 to the result of doubles fact.

for given, doubles plus one fact for 7 7 is 7+7=14 and then adding 1 gives 14+1=15.

Hence, 7+7+1=15 is the doubles plus one fact for 7 7.

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Evan's total itemized deduction is found as $24,400.

Only if medical expenses exceed 7.5% of your AGI may they be written off:

$277,300 x 7.5% = $20,797.50

Medical expenses: = $29,000 - $20,797.50

Medical expenses = $8,202.50.

Evan can write off $8,700 in interest on a mortgage.

$5,000 is the maximum deduction for state plus local taxes for just a single filer.

Contributions to charities are also tax deductible up to $2,500

Deductions totaled = $8,202.50 + $8,700 + $5,000 + $2,500

Deductions totaled = $24,402.50

Thus, Evan's total itemized deduction is found as $24,400.

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Using food labling :

The product contains 13 grams of total fat and 20 percent of the daily value. this means that

13 grams of fat provides 20% or one-fifth of the recommended total daily fat intake.

Food level :

food labels contain a lot of information about most packaged foods. Food labels are called "Nutrition Facts".itle or Job:

The US government requires food labels on most packaged foods. Labels provide complete, useful and accurate nutritional information. The government encourages food manufacturers to improve the quality of their products so that people can make healthier food choices.

Serving Sizes

Label serving sizes are based on the average amount of food people typically eat.

Label serving sizes are not necessarily healthy serving sizes.

Amount Per Serving

Total calories per serving are displayed in large print. This allows the consumer to count the number of calories per serving like total fat. Sodium; Total Carbs

PERCENT DAILY VALUE (% DAILY VALUE)

Many nutrients have a Percent Daily Value (%DV). This indicates how much each serving contributes to the total recommended daily intake of each nutrient. increase. This means that 13 grams of fat provides 20% or one-fifth of the recommended total daily fat intake.

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the rectangular coordinates of the point whose spherical coordinates are given. (3, 0, 0) are (0.0.3)

What is spherical coordinates?

The coordinate system that is most frequently employed in three-dimensional systems is called spherical coordinates of the system, represented as (r,Ф,∅ ). The surface area in three dimensions is calculated using the spherical coordinate system. Radial distance, polar angles, and azimuthal angle are the three numbers that these coordinates indicate. Additionally known as spherical polar coordinates.

Given (r,Ф,∅ ) = (3,0,0)

x = rsin∅ cosФ = 3 * sin0 *cos0 = 0

y =  rsin∅ sinФ = 3*0*0 = 0

z = rcos∅ = 3*1 = 3'

SO (x,y,y) = (0,0,3)

Hence the rectangular coordinates of the point whose spherical coordinates are given. (3, 0, 0) are (0.0.3)

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Answer:

Its the Origin

Step-by-step explanation:

Its ZERO

According to the evidence, we cannot conclude that the lower proportions of drowsiness in group 1 subjects is the side effect of the subjects in group 2., at alpha equals 0.05 level of significance. Thus, the correct option is C.

It is given that in the double-blind clinical trial, children are divided into two groups.

[tex]H_0 : p1=p2\\[/tex]

[tex]H_a: p1 > p2[/tex]

Now, N1= 450 , P1=136/450=0.3022

N2=95, P2=39/95=0.410

We have to now state the null and alternative hypotheses and draw conclusions based on them.

Now, the test statistics are done as follows:

Z= [tex]p1-p2/\sqrt{p1*1-p1/n1+p2*1-p2/n2}[/tex]

Z= [tex]0.3022-0.410/\sqrt{0.3022*1-0.3022/450+0.410*1-0.410/95}[/tex]

Z= [tex]-0.10/\sqrt{4.686+0.0025}[/tex]

Z= -0.10/2.165

Z= -0.04

At the significance level of 0.05.

Decision: We will reject the null hypothesis if the value of Z is less than the critical value

Critical value at Z(0.05)= -1.645

Thus, we will not reject the null hypothesis as the value of z is greater than the critical value. Thus, in this situation, we cannot conclude that the lower proportions of drowsiness in group 1 subjects as the side effect of the subjects in group 2.

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As per the standard deviation, The B stock portfolio is more risk-efficient in simple words.

Standard deviation:

Basically, standard deviation means the  measure of how dispersed the data is in relation to the mean.

And the low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

Given,

A highly risk-averse investor is considering adding one additional stock to a 3-stock portfolio, to form a 4-stock portfolio. The three stocks currently held all have b = 1.0, and they are perfectly positively correlated with the market. Potential new Stocks A and B both have expected returns of 15%, are in equilibrium, and are equally correlated with the market, with r = 0.75. However, Stock A's standard deviation of returns is 12% versus 8% for Stock B.

Here we need to find in which stock should this investor add to his or her portfolio, or does the choice not matter.

Here we know that either of these shares would yield the same expected return for the entire portfolio if added to the same share of the portfolio.

So, if stock B is included in the portfolio, the expected standard deviation for the portfolio will be lower, since the standalone deviation is lower.

And therefore, lower risk or volatility, or standard deviation of the portfolio for the same level of the expected return on the new portfolio.

Therefore, the ratio of Sharpe to stock B will be higher. The B stock portfolio is more risk-efficient in simple words.

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Answer:

A=3

B=15

Step-by-step explanation:

Since these are equivalent ratios, there is a constant scale factor for each number. As shown in the 8 and 24, we find the scale factor to be 24/8=3. This means that the second ratio's numbers are 3x bigger than the  corresponding ones in the first ratio. A = 9/3 = 3, and B = 5*3=15

The Child and Dependent Care Credit is a tax credit that helps parents and families pay for the care of their children and other dependents while they work, are looking for work, or are going to school.

Childcare and nursing care costs money! Luckily, there are tax deductions to cover the costs. If you had to pay someone to care for your children, family members, or spouse, find a job, go to school, or because of a disability, Child and Dependent Care credits are available.

You are generally eligible for the Child and Caregiver Tax Credit if you meet all of the following conditions:

For year 2022, the Child and Caregiver Tax Credit is non-refundable. For eligible employment-related expenses, taxpayers can claim up to $3,000 for each eligible individual or one child, and up to $6,000 for two or more eligible individuals or children.

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SAS: denotes the existence of two triangles whose two sides and included angle are known to be equal.

ASA: denotes the existence of two triangles whose included side and two known angles are equal.

SAS (side, angle, side):

Angle, Side, Angle, or ASA:

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Some of the situations where we can apply parallel lines cut by transversal are mentioned below.

Transversal line is a line which cuts two or more coplanar lines. Coplanar lines are the lines which does not intersect each other.

The real life situations were we can apply parallel lines cut by transversal are:

Thus, in real life there are many situations where parallel lines cut by transversal.

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Answer:

If a polygon is not a triangle, then the polygon has more than three sides. Since a triangle has exactly 3 sides, contrapositive is true

The length of the fencing is 12 feet and the width of the fencing is 24 feet.

What is length and width?

The dimensions of length and width are crucial in the study of geometry because they help define the models.

Given in the question,

The width must be twice the length,

So, Let the length as L and and the width will be equal to 2L.

Total fencing = 72 feet.

Assuming the flower bed to be rectangular.

The total perimeter = 2(Length + width)

72 = 2(L + 2L)

72 = 6L

L = 12,

So length will be 12 feet,

And, width will be 2L = 24 feet.

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The final step in solving the given inequality is defining the range according to the final value of x as (-Inf,3).

In Variable based math, inequality is a numerical explanation that shows the connection between two articulations utilizing the imbalance image. The articulations on the two sides of a disparity sign are not equivalent. It implies that the articulation on the left-hand side ought to be more prominent than or not exactly the articulation on the right-hand side or the other way around.

On the off chance that the connection between two mathematical articulations is characterized utilizing the imbalance images, then it is called exacting disparities.

We have inequality as –2(5 – 4x) < 6x – 4

Step1: -10+8x<6x-4

Step2:8x-6x<-4+10

Step3:2x<6

Step4:x<3

Step5:Range of value of x as (-Inf,3)

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(Complete question) is:

What is the final step in solving the inequality –2(5 – 4x) < 6x – 4?

The order of integration for the double integrals below from dy dx to dx dy, or vice versa is I = ₀∫⁴ √x∫y² eˣ/y² dydx

We need to switch the order of integration

I = ₀∫⁴ ₀∫ⁿ √(xy) dxdy

From n = 0 to n = 4

y = 0 to y = n

Taken horizontal strip

on strip values of y will be fixed and values of x will be varied.

Limits of y are

y = 0 to y = 4

limits of x are

x = y to x = 4

I = ₀∫⁴ ₀∫ⁿ √(xy) dxdy

I = ₀∫² ₀∫y² eˣ/y² dxdy

Taking vertical strip

on strip values of x will be fixed and values of x will be varied.

limits of x are

x = 0 to x = 4

Limits of y are

y = √x to y = 2

I = ₀∫⁴ √x∫y² eˣ/y² dydx

Therefore,  the order of integration for the double integrals below from dy dx to dx dy, or vice versa is I = ₀∫⁴ √x∫y² eˣ/y² dydx

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The cost of 15 cups is £35 and the cost of 7 glasses is £42 after applying the concept of the linear equation.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that:

Let the cost of 15 cups is x

3 → 7

15 → x

3/15 = 7/x

1/5 = 7/x

x = £35

The cost of 7 glasses:

= (24x7)/4

= £42

Thus, the cost of 15 cups is £35 and the cost of 7 glasses is £42 after applying the concept of the linear equation.

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Rejecting a null hypothesis that is actually true in the population results in a type I error (false-positive); failing to reject a null hypothesis that is actually untrue in the Type II errors are produced by the population (false-negative).

Given that,

We have to find what kind of error is committed if the researcher doesn't rule out the null hypothesis even though it's incorrect.

We know that,

To determine whether the provided experimental results are valid, the null hypothesis is a type of hypothesis that explains the population parameter. Depending on the viability of the given population or sample, this hypothesis is either rejected or not.

Rejecting a null hypothesis that is actually true in the population results in a type I error (false-positive); failing to reject a null hypothesis that is actually untrue in the Type II errors are produced by the population (false-negative).

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The HL postulate states that two triangles are congruent if the hypotenuse and leg of one right triangle are congruent with the hypotenuse and leg of another right triangle.

Hypotenuse Leg Theorem

hypotenuse theorem proof shows how a given set of right triangles is congruent when the corresponding hypotenuses and one leg are of equal length.

Statement:

Two triangles are congruent by the hypotenuse leg theorem if the hypotenuse and one leg of a right triangle are congruent with the hypotenuse and leg of another right triangle.

given: where ABC is an isosceles triangle, AB = AC, and AD is perpendicular to BC.

Proof : AD as altitude is perpendicular to BC and forms ADB and ADC as right triangles. AB and AC are the respective hypotenuses of these triangles and we know they are equal. Because AD = AD is common for both triangles.

That is, AB = AC and AD is common.

Therefore, the hypotenuse and pair of legs of the two right-angled triangles satisfy the definition of the HL theorem.

We know that angles B and C are equal (property of isosceles triangle).

We also know that the angles BAD and CAD are equal (AD bisects BC and BD equals CD).

Therefore, △ADB ≅ △ADC

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The final balance is $446.44

What is compound interest ?

Compound interest is when you add the interest you've already earned back into your principal balance, which increases your returns by compounding them. Consider that you have $1,000 in a savings account with a 5% annual interest rate. You would make $50 in the first year, giving you a new balance of $1,050.

Compound interest, also known as interest on principal and interest, is the practice of adding interest to the principal amount of a loan or deposit.

r = 5/100

r = 0.05 rate per year,

Then solve the equation for A

A = P(1 + r/n)^nt

A = 300.00(1 + 0.05/4)^(4)(8)

A = 300.00(1 + 0.0125)^(32)

A = 446.44

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In the Binary method's complement method, positive integers are represented as they would in in sign-and-magnitude format. the leftmost bit is still reserved as the sign bit. a negative integer is just the complement of the positive integer, with a 1 in the leftmost spot to represent the negative sign

The method of complements is a technique to encode a symmetric range of positive and negative integers in a way that they can use the same algorithm for addition and subtraction throughout the whole range

Changing the sign of any number is encoded by generating its complement, which is usually done by a very simple and efficient algorithm

Therefore, In the Binary method's complement method, positive integers are represented as they would in in sign-and-magnitude format.

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In general, the limit will reach infinity or negative infinity when you take a limit and the denominator is equal to zero (depending on the sign of the function).

The number zero is not a real number. It is a mathematical notion used to symbolize an extremely huge value that is theoretically impossible to obtain. Limit solutions imply that the equation you are getting the limit of will continue to go in that direction indefinitely. The graph approaches but never touches the y-axis (represented by x = 0) because you have a vertical asymptote there. g(x) = 1/(x2) will continue to rise as you approach x = 0 from the right or left. You can picture it continuing upwards after it leaves the page. In other words, because g(x) keeps increasing indefinitely as x approaches 0, its limit is infinity.

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m mean slope in parallel lines and it is always same in two parallel lines.

Given:

Linear equations are generally described by the slope-intercept

represented by the equation y = mx+b

where m = slope

b = y-intercept.

In parallel lines:

Slope is always same means that two parallel lines have same slopes because those are not intersect at any point.

Example:

y = 3x + 4

here slope m = 3

The parallel line to this equation is also have the same slope.

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A hypothesis is a statement regarding a characteristic of one or more populations. The null hypothesis is a statement of no change, no effect, or no difference. The alternative hypothesis is a statement we are trying to find evidence to support.

Generally, the null hypothesis expresses that there is no change, no difference, no effect, and in another way, no relationship between the independent and dependent variables. Because we are hypothesizing that nothing is happening, then it is called the null hypothesis.

The null and alternative hypothesis are two conflicting claims which researchers weigh evidence for and against using a statistical test. Null hypothesis (H0) means there is no effect in the population. Meanwhile, alternative hypothesis (Ha or H1) means there is an effect in the population.

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The distance from lake b to camp is 310 km and the direction of lake b to camp is 57° S of W.

Distance is a numerical value. The length between the two points is measured by distance. The face or position of an object or person can be said by direction.

There are four cardinal directions which are the main four compass directions. The four directions are North, East, West and South. North-East, North-West, South-East and South-West also come under directions.

As per the question,

With a scale of unit 1, the vector from the base camp to the lake to the vector connecting lakes a and b is graphically represented.

Therefore, 310 km is the distance from the lake b to base camp and 57.0° south of west is the direction of the plane.

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The probability that the person is over 40 given that he or she is a root beer drinker is 62.75%

The fact that

The ratio of the event space's size to the sample space's size represents an event's probability.

The total number of outcomes equals the size of the sample space.

The number of outcomes in the event you are interested in is the event space.

so

P = event space size divided by sample space size

step 1

determine the likelihood that the person is over 40 years old.

The sample size is 255.

event space size = 85

P=85/255------> P=1/3

step 2

determine the likelihood that they consume root beer.

The sample size is 255.

event space size = 75

P=75/255------> P=5/17

step 3

determine the likelihood that the individual is over 40 years old or that

They consume root beer.

so

P=(1/3)+(5/17)——-> P=(17*1+3*5)/51------> P=32/51-----> 0.6275——> 62.75%

therefore, the response is

32/51 or 62.75%

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