The horizontal part of a step is called the tread. the vertical part is called the riser. the recommended riser-to-tread ratio is 7 inches : 11 inches. a. find the value of x for stairs built using the recommended riser-to-tread ratio. round your answer to the nearest tenth.

Answers

Answer 1

The value of x for these stairs built by using the recommended riser-to-tread ratio is 32.5°.

Given the following data:

Length of riser = 7 inches.Length of tread = 11 inches.Ratio = 7:11.

How to determine the value of x.

In Mathematics, a tread refers to the horizontal part of a step while a riser is the vertical part of a step.

Note: Let the angle of inclination be x.

In Geometry, two (2) lines that are parallel have the same alternate interior angles. Thus, the angle of inclination between the riser and tread is given by:

[tex]Tan x = \frac{rise}{tread} \\\\Tan x = \frac{7}{11} \\\\Tan x = 0.6364\\\\x=tan^{-1}0.6364[/tex]

x = 32.5°.

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The Horizontal Part Of A Step Is Called The Tread. The Vertical Part Is Called The Riser. The Recommended

Related Questions

True or false in a parallelogram any two opposite sides are congruent

Answers

Answer:

True

Explanation:

Among the properties of a parallelogram is that opposite sides are congruent.

hope this helps and is right!! p.s. i really need brainliest :)

What is black and white and has lots of problems worksheet answers

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A worksheet answer page

What concept would not be a correct addition to the student's explanation about how energy flows and matter cycles through an ecosystem?

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Plants use cellular respiration to break down molecules and then they use them is NOT correct to explain how energy flows and matter cycles in an ecosystem.

How do energy and matter flow in the ecosystem?

The ecosystem can be considered as the interaction between abiotic (e.g., water) and biotic factors (organism) in a given area.

In an ecosystem, the matter cycle and energy flow by crossing across different trophic levels.

The trophic levels are composed of organisms that show a special localization in the food web (e.g., herbivores).

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Lesson 16 solve problems with equations answer key

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Based on the calculations, the value of x and y in this equation are both equal to 5.

What is a system of linear equations?

A system of linear equations can be defined as an algebraic equation of the first order that has two (2) variables with each of its term having an exponent of one (1).

Given the following data:

x + y = 10  .....equation 1.

x = 5.       .....equation 2.

How to evaluate an equation.

In order to evaluate the given mathematical equation, we would substitute equation 2 into equation 1 as follows:

[tex]5+y=10\\\\y=10-5[/tex]

y = 5.

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based on the information provided in figure 1 and figure 2, which of the following best predicts the effects of a mutation in the promoter of the tyr gene that prevents it from being transcribed?

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Based on the information provided in figure 1 and figure 2, Skin pigmentation will not be altered, leading to a negative selection pressure.

What is the figure about?

The Figure shows the making of α-MSH in keratinocytes as a result of UV radiation.

The option that  effects of a mutation in the promoter of the tyr gene that prevents it from being transcribed is that Skin pigmentation will not be altered, leading to a negative selection pressure.

Conclusively, in  Figure 1, TYRTYR is needed for the steps in the melanin synthesis pathway but when it was not shown properly, it hinders melanocytes from synthesizing melanin even if there was an exposure to UVUV radiation. This would therefore leads to a negative selection pressure.

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15.5 angle relationships in circles evaluate homework and practice

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The measure of angle MPK is acute angle between the intersecting lines

The measure of MPK is 86 degrees

How to determine the measure of the angle?

To calculate the angle measure of MPK, we use the following equation:

MPK = 0.5 * (MK + LN)

From the figure, we have:

MK = 61

LN = 111

So, we have:

MPK = 0.5 * (61 + 111)

Evaluate the product

MPK = 86

Hence, the measure of MPK is 86 degrees

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Big ideas math algebra 1 student journal answer key

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Answer:

thats not a real question and just look lt up

Explanation:

Math accelerated chapter 12 volume and surface area

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The example of shapes that was studied under the Math accelerated chapter 12 workbook is The volume of the prism is shown as 61.6in³. What is the height of the prism?

What is Math Accelerated Textbook?

The Glencoe Math Accelerated is known to be a comprehensive robust text that has been set up to support the teachers teaching skills and styles and also to address the needs of your students.

To solve for the height of the prison. The formula is

V = lwh

V = 61.6

V= 8 x 2.2 x h

H = 61.6/17.6

H= 17.6h/17.6

H = 3.5in³

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What is the sum of the series 1+ln2+(ln2)22!+⋯+(ln2)nn!+⋯?

Answers

Answer:

e

ln

(

2

)

=

2

Explanation:

Calculate, to four decimal places, the first ten terms of the sequence. an = 1 + − 1 2 n

Answers

The sum of the first ten terms of the given sequence when approximated to four decimal places is; 9.6758

What is the sum of the sequence?

We are given the formula for the sequence as;

aₙ = 1 + (⁻¹/₂)ⁿ

Thus;

First term; a₁ = 1 + (⁻¹/₂)¹ = 0.5

a₂ = 1 + (⁻¹/₂)² = 1.25

a₃ = 1 + (⁻¹/₂)³ = 0.875

a₄ = 1 + (⁻¹/₂)⁴ = 1.0625

Fifth term; a₅ = 1 + (⁻¹/₂)⁵ = 0.96875

a₆ = 1 + (⁻¹/₂)⁶ = 1.01563

a₇ = 1 + (⁻¹/₂)⁷ = 0.99219

a₈ =  1 + (⁻¹/₂)⁸ = 1.00391

a₉ = 1 + (⁻¹/₂)⁹ =  0.99805

Tenth term; a₁₀ = 1 + (⁻¹/₂)¹⁰ = 1.0098

Thus, sum of all those ten terms is;

S₁₀ = 9.6758

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Math accelerated chapter 8 equations and inequalities answer key

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In  math equations and inequalities, they are said to be both mathematical sentences that is created to link two expressions such as the use of symbol  >, <, ≤ or ≥. when two items are in a state of inequality.

What is equation and inequality?

An equation is known to be a type of mathematical statement that depicts the equal state of two expressions. It is often depicted with the symbol = which shows equality.

While an inequality is known to be a mathematical statement that shows that two given expression is said to lesser than or more than one another.

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to catalyze a biochemical reaction an enzyme typically

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Answer:

Enzyme catalysis An enzyme catalyzes a biochemical reaction by binding a substrate at the active site.

Explanation:

The catayze is a biomedical reaction of an enzyme that typically binds the substance at the active site.

What is a biomedical reaction?

Biomedical reaction is the transformation of one of the molecule into a different molecule that is located inside the cell.

These reactions are then medicated by enzymes and act like biological catalysts. They can alter the rate of the chemical reactions inside the cell.

Find out more information about the biochemical reaction.

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__________ is the source error that can be avoided by locating questions sensitive to bias and changing or dropping them.

Answers

Answer: social desirability .

Explanation: your welcome <3 .

From a point 54.0 feet from the base of a flagpole, the angle of elevation to the top of the flagpole is 68.5°. find the height of the flagpole.

Answers

The flagpole forms a right-triangle with its base and its top

The height of the flagpole is 137.1 feet

How to determine the height?

To determine the height, we make use of the following tangent trigonometry ratio

[tex]\tan(68.5) = \frac{h}{54.0}[/tex]

Where:

h represents the height of the flagpole.

So, we have:

[tex]h = 54.0 * \tan(68.5)[/tex]

Evaluate

[tex]h = 137.1[/tex]

Hence, the height of the flagpole is 137.1 feet

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In a certain video game, the variable maxps represents the maximum possible score a player can earn. the maximum possible score depends on the time it takes the player to complete the game. the value of maxps should be 30 if time is greater than 120 and 50 otherwise.

Answers

The code segment that best sets the value of maxPS is the first one because it includes complete and correct information.

What is a code segment?

As indicated by its name, it refers to a small section in the program's executable instructions.

How to select the best code segment?

The code segment should include complete and accurate information. In this case, we know:

The maxPS is directly related to time.The maxPS is usually 50.This condition is not Met if the time is over 120 which would lead to 30 maxPS.

Based on this, the best code segment is A because this accurately shows the maxPS is 50 except when time is over 120 as this changes the maxPS to 30.

Note: This question is incomplete because the options are missing; below I attach the missing section:

Which of the following code segments correctly sets the value of maxPS based on the value of time?

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17.1 equation of a circle evaluate homework and practice

Answers

Based on the calculations, the radius of this circle with the given equation is equal to 5 units.

Given the following data:

[tex]x^2+y^2+8x-6y+21=0[/tex]

The equation of a circle.

Mathematically, the standard form of the equation of a circle is given by;

[tex](x-h)^2+(y-k)^2=r^2[/tex]

Where:

h and k represents the coordinates at the center.r is the radius of a circle.

Expanding the equation, we have:

[tex]x^2+y^2-2hx-2ky+(h^2+k^2-r^2)=0\\\\r=\sqrt{h^2+k^2}[/tex]

Comparing the terms, we have:

[tex]-2hx = 8x\\\\-2h=8\\\\h=\frac{8}{-2}[/tex]

h = -4

[tex]-2ky = -6y\\\\-2k=6\\\\k=\frac{6}{-2}[/tex]

k = 3.

Now, we can determine the radius:

[tex]r=\sqrt{-4^2+3^2}\\\\r=\sqrt{16+9} \\\\r=\sqrt{25}[/tex]

r = 5 units.

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correctly label the following components of the kidney.

Answers

The correct labelling of the components of the kidney is;

From left top:

Renal artery and veinHilumKidneyFibrous capsulePerirenal fat capsule

Right:

UreterRenal fascia

What is a kidney?

This is an organ in the body that filters the blood and produces urine.

The Functions Of The KidneysTo Extract Waste From Blood, To balance Body Fluids, To form UrineTo aid In Other Important Functions Of The Body

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Big ideas math geometry student journal answer key chapter 9

Answers

An example of Big ideas math geometry student journal  question is what percentage of 260 is 65?

What is  Big Ideas Math?

This is known to be a very popular Core Curriculum that has been set for Middle School and High School Mathematics. It was found to be  written by Ron Larson and Laurie Boswell.

To solve for the percentage of 260 that is 65, one has to categorized them

Percentage will be p:

So the equation will be:

p. 260 - 65

p = 65/ 260

p = 0.25 which is approximately 25 percent.

Therefore a percentage of 260 that is 65 is 25%.

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Nate’s ice-cream cone has a diameter of 4 cm and a height of 14 cm. what is the approximate volume of the ice-cream cone?

Answers

Answer: 58.643 cm^3

Explanation:

Volume of a cone = (1/3) * π * r^2 * h

Half of the diameter is the radius, so r = 2 and h = 14.

Plug in: V = (1/3) * π * 2^2 * 14 = 58.643 cm^3 :)

Read the following sentence.


Pliny once wrote that Phoenician sailors who cooked on blocks of natron (soda) on a beach discovered glass accidentally.


Is the underlined phrase essential (restrictive) or nonessential (nonrestrictive)? Explain your reasoning

Answers

Answer:

The underlined phrase is essential. It isn't just any group of Phoenician sailors who discovered glass, nor is it that Phoenician sailors in general discovered it; the sentence refers to a particular group of sailors that used blocks of natron to cook on the beach.

Explanation:

source…Quizlet

I hope this helps

Have an AMAZING day. :)

Western and central europe: 740,000 adults and children living with h i v and 12,000 deaths due to h i v. eastern europe and central asia: 1.7 million with h i v and 84,000 deaths. east asia: 750,000 with h i v and 43,000 deaths. south and southeast asia: 7.8 million with h i v and 90,000 deaths. oceania (including australia and new zealand): 81,000 with h i v and 4,000 deaths. middle east and north africa: 460,000 with h i v and 36,000 deaths. sub-saharan africa: 24.7 million with h i v and 2.1 million deaths. which area of the world has the most people living with hiv/aids? the middle east and north africa sub-saharan africa south and southeast asia eastern europe and central asia

Answers

Answer:

B. Sub-Saharan Africa

Explanation:

A wave travels 600 m/s at a frequency of 200 hz. what is its wavelength?

Answers

The wavelength of the wave traveling at the given velocity and frequency is 3m.

Given the data in the question;

Velocity of wave; [tex]v = 600m/s[/tex]Frequency; [tex]f = 200Hz = 200s^{-1}[/tex]Wavelength; [tex]\lambda = \ ?[/tex]

Wavelength

Wavelength is simply defined as the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.

It is expressed as;

[tex]\lambda = \frac{v}{f}[/tex]

Where v is velocity and f is frequency.

To determine the wavelength of the wave, we substitute our given values into the expression above.

[tex]\lambda = \frac{v}{f} \\\\\lambda = \frac{600m/s}{200s^{-1}} \\\\\lambda = \frac{600ms/s}{200}\\\\\lambda = 3m[/tex]

Therefore,  the wavelength of the wave traveling at the given velocity and frequency is 3m.

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A camera is mounted on a tripod feet high at a distance of feet from​ george, who is feet tall. look at the model to the right. if the camera lens has angles of depression and elevation of ​, will​ george's feet and head be seen by the​ lens? if​ not, how far back will the camera need to be moved to include​ george's feet and​ head?

Answers

To capture his feet and head, the camera will need to be moved at least one foot backward. This is an Angles of Elevation and Depression theorem exercise.

What is the Angle of Elevation Theorem?

The angle of elevation is the angle between the line of sight and the horizontal line when an observer looks up. While the Angle of Depression refers to the angle that is formed when the observer looks down.

The formulas are given as:

tan θ = y/x  ⇒      θ = tan -1 (y/x).  

How to calculate the distance required for the camera to capture Geroge completely

Let us assume that x is the distance in feet that the tripod must be moved back.

Recall that the angle of depression and elevation as given in the question (full version attached) is 20°

The height of the Tripod is 4 feet, at a distance of 10 feet, therefore,

tan (20°) * (10 + x) = 4

x =4/tan (20°)-10

x= 4/(10.989909678 - 10)

x = 0.9899

x ≈ 1 feet.

Hence the camera must be moved back about 1 feet to capture Geroge..

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Maslow’s hierarchy of needs is an organized progression from one’s most basic needs to less basic or discrete needs.

Answers

It should be noted thy Maslow’s hierarchy of needs is an organized progression from one’s most basic needs to less basic or discrete needs.

What is Maslow’s hierarchy of needs?

Maslow’s hierarchy of needs serves as the organization of human needs from top yo bottom of the needs scale.

The needs are are classified as;

physiological (food and clothing) safety (job security) love and belonging needs self-actualization.

Therefore, the given statement is correct.

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Answer:

It's True

Explanation:

What is the volume of the cone? use π ≈ 3. 14. 12. 56 cubic units 18. 84 cubic units 20. 93 cubic units 25. 12 cubic units

Answers

Answer:

Explanation:

the following formula is used to find the volume of a cone

V - volume = πr²h/3

where π = 3.14, r - radius and h - height

the height hasnt been directly given

we can find height using Pythogoras theorem for the right angled triangle given

4² + h² = 5²

16 + h² = 25

h² = 25 - 9

h² = 9

h = 3

height = 3

diameter is 4, therefore radius - diameter / 2 = 4/ 2 = 2

radius = 2

substituting values in the volume equation

V = 3.14 x 2² x 3 /3

= 12.56

volume is 12.56 cubic units

When a ball is dropped down from rest and air friction is neglected, determine the speed it is gaining per second.

Answers

Answer:

yes it is true it is gaining per second

Consider the following claim: group behavior can increase the chances for an individual and a species to survive and reproduce

Answers

Many social behaviors of animals are adaptive, meaning that being social ultimately increases an animal's fitness — its lifetime reproductive success. One example of how social behavior is adaptive is aggregation against predators.

Based on the equation and the titration results what is the concentration of the h2so4(aq)

Answers

Answer:

The value is going to be 0.96 M. You would need to refer to the chart so that you can solve the question properly. To solve for the value of this, you need to know the value of each mole. The equation is going to be MaVa=MbVb x (12). You would need to change the concepts to (0.16)(36.0) x = 0.48.

All of the following are included in the heading of an income statement except:

Answers

Answer:

the header of the income statement.

income statement

business name

the dates of the accounting period that the income statement will cover.

A regular deck of cards has 52 cards. assuming that you do not replace the card you had drawn before the next draw, what is the probability of drawing three aces in a row?

Answers

The probability of drawing three aces in a row is the likelihood of drawing three aces

The probability of drawing three aces in a row is 0.000181

How to determine the probability?

In a standard deck of 52 cards, there are 4 aces.

Given that the selection is without replacement; then we have the following selections:

First: 4 aces in 52 cardsSecond: 3 aces in 51 cardsThird: 2 aces in 50 cards

The probability is then calculated as;

[tex]P = \frac{4}{52} * \frac{3}{51} * \frac{2}{50}[/tex]

Evaluate the products

[tex]P = 0.00018099547[/tex]

Approximate

[tex]P = 0.000181[/tex]

Hence, the probability of drawing three aces in a row is 0.000181

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