# Posts by vanessa

Total # Posts: 906

math
Luke build a model train to a scale of 1:25.calculate a copy of the table below using his scale. length of engine on the real x and on the model is 16cm. length of train on the real 20m and x on the model. height of train is x and 12cm on the model.

Chemistry
Methane (CH4) behaves as an ideal gas under standard temperature and pressure conditions. What volume is occupied by 1 kg of methane at a temperature of 35 °C and a pressure of 0.9 atm?

Physics
A point source is 1.20m below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water.

Statistics
Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database (A-5), an estimate of the percentage of adults who have at some point in their life been told they have hypertension is 23.53 percent. If we ...

Math
On a rainy day,20% of the 55 pupils in a class were absent.How many pupils were present on that day?

Chemistry
A closed bottle contains a solution of 5.0% by mass acetone [(CH3)2CO] in water. Calculate the vapour pressure (in kPa) of this solution at 25oC. The vapour pressure of pure water at 25oC is 3.17 kPa and that of pure acetone is 30.7 kPa.

math
If a pentagon has five sides. Two sides are three times the length of the shortest side. Two sides are five inches longer than the shortest side. Write and simplify an expression for the perimeter of the pentagon.

Science
How many grams of ammonia is produced when nitrogen is 84 grams

Math
The students in a class of 24 share 48 apple slices and 36 orange slices equally among them. How many pieces of fruit did each student get?

Chemistry
rank the compounds below in order of increasing vapor pressure at 298 K? A) c3h6 B) c4h8 C) c5h10

Vectors and matrices
A triangle T has a vortices (3,-1),(5,-1) and (5,-4).draw and label the traingle T. M is the matrix (1 0) ( 0 -1). The triangle T is mapped on triangle T by the means of transformations M,draw and label T on your diagram. T has a vertices at (3,1),(5,1) and (5,4)

I dont know
The vector has a magnitude of 8 units. If the x-y coordinates of the tail of the vector are (0,0) what are the x-y coordinates of the tip of the vector? Use the pythagorean theorem to help you decide: for right triangles c^2= a^2+b^2, where a and b are the lenghts of the legs ...

ELA
What are the differences and similarities between Sal And Phoebe???

Math
You are designing a rectangular dog pen off the back of your house. The House will form one side of the dog pen. The pen is to have an area of 800 ft.² but you want to minimize the amount of fencing that you need for the three sides of the pen not against the house. This...

Math
The large wheel on Jay's wheelchair has a diameter of 52cm. Jay moves her wheelchair forward 9.5 metres. Calculate how many times the large wheel goes round.

Physics
A Dare daredevil wants to jump his motorcycle across a 50 m Canyon a) If his speed is 30m/s and a ramp angle is 50 degrees where should the landing ramp be placed? b) With the same ramp what initial speed should he have if the landing ramp is 10 m from the far edge

Math
A is the midpoint of CT. CA= 3x+6 and CT= 24, find x

Biochemistry
What is the pH of a 0.1M solution of TRIS in the acid from with pKa =8.3

Physics
A child throws a rock vertically at 15.0 m/s. It lands on his roof 3.0m above the ground. How long was the rock in the air and what was its speed just before it hit the roof?

Math
What is 4 x 6 x 5

Math
What is 50x50 and why pls show work (don't show adult work I'm in 6 grade I'm not going to understand lol)

Math
I poured one liter of juice into three conainers that were not equal how many milliliters of juice might l have poured into container show 5 possible solution

Math
What value of x will make the equation below true? 2x-6=3x+1-x-7

CHEM 2
A 23.0% by mass LiCl solution is prepared in water. What is the mole fraction of the water?

Global Communication
How might messages in Belgium and France need to differ from messages that are shared with American consumers? Thank you in advance!

algebra 2
4x+5y=11 2x+6y=16 solve algebraically

half-life

half-life
the half life of isotope X is 2.0 years how many years would it take for 4.0 mg sample of X to decay and have .50 mg of it remain?

stats
Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A’s to the top 10% of students, B’s to the next 25%, and C’s to the next 42%. a.) what is the bottom cutoff for a C grade? b.) what...

Math
Mr.dean paints the top of a round picnic table. The diameter of the table iz 6 feet. The paint he usez comes in a can that covers 18 square feet of surface. How many cans of paint does mr.dean need to purchase to paint one coast on the top of the table?

PHYSICS!!
It is 5.0 km from your home to the Physics lab and your car is out of gas. You could run that distance at 10 km/h, which uses up energy at the rate of 700 W; or you could walk it leisurely at 3.0 km/h, which uses energy at 300 W. (a) Calculate how much energy both choices ...

PHYSICS!!
A person thought it would be a good idea to change a tire on the side of a hill. The tire has a width of W = 0.30 m and a radius of R = 0.40 m. The inside of the wheel is empty, but the wheel is solid from a radius of R/2 to R with uniform density. The density of the material ...

PHYSICS!!
The human body loses heat at a rate of 120W when sitting quietly at rest. If a 65 kg student takes 100 hours to read War and Peace by Leo Tolstoy, how high could they have been lifted if all the heat energy lost was utilised to lift them against gravity (assuming that the ...

Math again!!!!
What is the total cost of 2 sweaters at \$13 each and 2 shirts at \$8 each

Physics
Women and overweight people often experience backpain. Let us explore the reason for this. Assume the women has a weight of 60.0 daN before pregnancy. Suppose she gains 10.0 daN during pregnancy, due to weight of the fetus, placenta, amniotic fluid, etc. To make the ...

Math
Since they had to have finished over half of the parking lot by midday and the rest was finished by the end of the day with half the people they must have finished ⅔. And since the other half of the team was working on the smaller pavement ⅔ of the pavement got ...

physics
Consider the hip joint. The bones are normally not in direct contact , but instead are covered with cartilage to reduce friction. The space between them is filled with synovial fluid, which reduces the friction further. Due to this fluid, the coefficient of kinetic friction ...

Language Arts

MATH
FIND THE COORDINATES OF THE POINT ON THE Y-AXIS WHICH DIVIDES THE LINE SEGMENT FROM (0, -4)TO(0,20)INTERNALLY IN THE RATIO 5:7.

Art
Wouldn't it be B??

Art
an environment artist created a piece in protest of trash. Anticipation negative public reaction, the artist decided to display the work anyway. what is the most likely reason? A. The artist believed that the purpose of the work was to stir up awareness B. The artist did not ...

Math
which statement is a true statement? All rectangles are squares All squares are rectangular •• Every rhombus is a rectangle Every rectangle is a rhombus Correct me if I'm wrong!!

Math
Which statements are always true about regular polygons? Select all that apply. All sides are congruent •• Pairs of sides are parallel All angles are congruent •• All angles measure 90 degree Correct me if I'm wrong!!

Math
a rug in the shape of a regular quadrilateral has a side length of 20ft what is the perimeter of the rug? 4ft 5ft•• 40ft 80ft Correct me if I'm wrong!!

Math
which polygons will always be irregular? Triangle Trapezoid•• Square Hexagon Correct me if I'm wrong!!

Art
was marcel duchamp's reaction to the public outcry against his work nude descending a staircase (No.2)? Duchamp was crushed; he wanted to be accepted by the public Duchamp simply ignored the controversy and created more Art Duchamp was delighted; even negative helped to ...

Art
What was marcel duchamp's reaction to the public outcry against his work nude descending a staircase (No.2)? Duchamp was crushed; he wanted to be accepted by the public Duchamp simply ignored the controversy and created more Art Duchamp was delighted; even negative helped ...

Art
I think it would be the first one??

Art
Which is the best definition of responsibility? Handing the job over to another person Accountability for the result Strength of character •• Creativity and originality Correct me if I'm wrong!!

Art
Which of these is the best definition of freedom of expression? A. expression that doesn't cost anything to have or share B. Uncensored speech,Art, or other means of communication •• C. Wild, uncontrolled expression of ideas D. Information and ideas that are ...

Foreign Languages
I'm pretty sure you are right!!

Language
Oh now I get it it's B and thanks for your help!!:)

Language
Wouldn't it be D

Language
Frogs burrow the mud snails bury themselves and I air my quilts preparing for the cold Dogs grow more hair mothers make oatmeal and little boys and girls take Father John's Medicine Bears store fat chipmunks gather nuts and I collect books For the coming winter 2. Which ...

Language
Sorry I spelt that wrong it's endmark

Language
Which of the following sentences uses an appropriate dmarken? Did you wake up before your alarm today! I can't wait to go to Los Angeles this summer? I am so overwhelmed by all this work!•• Will you call me before you leave for your appointment . Correct me if I...

Language
Woulnt it the the second one?

Language
Which of the following sentences is a command? Do you enjoy gospel music? Please lock the door when you leave. What an amazing sunset !•• Kathleen drives were long and difficult. Correct me

Language
which category best describes the following sentence? Can kangaroos walk on all four legs? A) declarative B) Interrogative •• C)imperative D)exclamatory Correct me if I'm wrong!!

Education technology
Which of the following is not an example of an Objective question? Multiple choice Essay •• True/false Matching

Technology
In Which of the following ways can you use test taking tips help you ? You can focus on the information that you need to study •• You will see the answers to the test You will study more You will be less organized Correct me if I'm wrong

Technology
For number 1 wound it be essay??

Technology
Which of the following is not an example of an Objective question? Multiple choice Essay True/false Matching•• Why is it important to recognize the key word in an essay question? It will provide the answer to the essay It will show you a friends answer It will ...

Science
1. A ___ has a definite shape and a definite volume. (1 point) solid•• liquid gas molecule 2. Why is a gas able to flow? (1 point) Its particles have melted and can move around. Its particles have high viscosity and can move around. Its particles have enough energy ...

Language
Assyr come down like a wolf on the fold, And his cohorts were gleaming in purple and gold. And the sheen of their spears was like stars on the sea, When the blue wave rolls nightly on deep Galilee. What is a key characteristics of a refrain in poetry? A. Imagery B. ...

Language
So it's D

Language
Which one would be the opposite?

Language
which statement describes the translation form of a haiku poem? A. A three line poem with seven syllables in the first and third lines and five syllables in the middle line.•• B. A nine line poem with five syllable in odd numbered lines and seven syllables in even ...

Language
which of the following answer choices contains a metaphor a.his skin was sandpaper •• b. the sun sparked like a diamond c.she wanted to be like the birds and fly away d. they felt free when they ran Correct me

Language
What is the rhyme scheme of the above lines? A. abab B. aabb C. aabc•• D. abaa Correct me if I'm wrong!! The Assyr come down like a wolf on the fold, And his cohorts were gleaming in purple and gold. And the sheen of their spears was like stars on the sea, When ...

Art
And thank you guys that helped me

Art
Americans chose willow strips to make baskets because they were easy to blend and A-east to find •• B-rare and valuable C-multi-colored D-waterproof Correct me plz Okay I'm really sorry for posting this question again but I'm really sure it's A because ...

Art
Are willow strips waterproof? Yes Correct me if I'm wrong

Art
Is it easy to find willow strips in America? I think no Correct me if I'm wrong!!

Art
Americans chose willow strips to make baskets because they were easy to blend and A-east to find B-rare and valuable C-multi-colored D-waterproof •• Correct me plz

Art
The jeweler set a ring so that the green of the emerald contrasted with the white of the diamonds. He decided that adding the large, costly stone was worth it a. because of the archival quality of the stone b. for aesthetic reasons•• c. to show his client's ...

Art
I'm really sure it's A and my dad thinks the same!!

Art
A sculptor creates a bust of a famous politician out of marble and places it in the outdoor courtyard of the capitol building. Why did he chose marble? A. he wanted to honor the politition by using expensive material. b. marble is cheap and east to find C. marble will not hold...

Science
Plz correct me if I'm wrong!! 1) Which of the following is a chemical change? (1 point) Boiling of water Melting a cube of ice Dissolving 10 grams of salt in water Splitting water into hydrogen and oxygen*** 2) What is the mass of water that results from combining 2.0g of ...

Science
Plz correct me if I'm wrong!! Which of the following is a chemical property of aluminum? A.) The melting point of aluminum is 660 degrees C B.) The boiling point of aluminum is 2519 C C.) Aluminum does not dissolve in water D.) Aluminum reacts with oxygen••

Science
Plz Correct me!! Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22O11. Which of the following is true? (1 point) Both compounds are held together by chemical bonds. Both compounds have the same density. Both compounds react with water. Both ...

Science
Plz correct me!! A student combined water, sugar, and salt in a beaker. Which of the following statements is true? (1 point) The individual substances can be separated by physical means. The individual substances cannot be separated by physical means.* A new substance is made ...

Science
Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22O11. Which of the following is true? (1 point) Both compounds are held together by chemical bonds. Both compounds have the same density. Both compounds react with water. Both compounds ...

Plz correct me!!
A mixture of sugar and water can be separated by _________________. Choose all that apply. (2 points) using a magnet boiling the mixture •• evaporating the mixture•• using a filter Correct me if I'm wrong!!

Science
A mixture of sugar and water can be separated by _________________. Choose all that apply. (2 points) using a magnet boiling the mixture •• evaporating the mixture•• using a filter Correct me if I'm wrong!!

Science
Check my answers!! Plz 1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a ...

Language
read the following lines from the poem " The Destruction of sennacherib" by lord byron The Assyr come down like a wolf on the fold, and his cohorts were gleaming in purple and gold. And the sheen of their spears was like stars on the sea, When the blue wave rolls ...

Technology
Correct me if I'm wrong!! Ken Has Dipped Many Dark Chocolate Marshmallows (which helps you remember the metric system distance units in decreasing order: Kilometer, Hectometer, Decameter, Meter, Decimeter, Centimeter, Millimeter) is an example of which type of mnemonic? A...

Technology
Correct me if I'm wrong!! 2. You may see the term FAQ on websites, which stands for Frequently Asked Questions. This is an example of which type of mnemonic? A. poem B. acronym C. acrostic D. abbreviation••

Technology
Correct me if I'm wrong!! A mnemonic is a tool that you can use when you are studying to help you do which of the following? a. remember lists or large amounts of information more easily•• b. write information on paper more easily c. print out information more ...

Math
x in (-oo:+oo) x^2+(3/4)*x+1/8 = 0 x^2+3/4*x+1/8 = 0 DELTA = (3/4)^2-(1/8*1*4) DELTA = 1/16 DELTA > 0 x = ((1/16)^(1/2)-3/4)/(1*2) or x = (-(1/16)^(1/2)-3/4)/(1*2) x = -1/4 or x = -1/2 x in { -1/2, -1/4 }

Math
What's 4x to the second power + 12x +8 factored?

math
65478

Algebra
Write algebraic expression for the given quantity. Let x represent the unknown value. Eight increased by half of a number. I put. X=8+1/2

Social Studies (Help!)
The french moved so far to the west because according to the map it looks like they just wanted more land

pre-cal
A small ferris wheel, a student is riding a 20-m-diameter ferris wheel that is making 3 revolutions per minute. What is the area of the sector between 3 of the seats (3/8) of the wheel?

Physics- Mastering Physics
Predict how the range of the projectile will change when you change the angle from 45∘, keeping the speed constant. A The range increases with increase in angle and decreases with decrease in angle. B It increases with either an increase or decrease in angle. C It ...

Math
ASAP help

Math
One measured the location for the bookcase and realize that his shelves can be no more than 1 3/4 wide how many DVD cases will you be able to store on each of the shorter shelf's. how many paperback books will he be able to the store on each of the shorter shelf's

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