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July 28, 2014

Homework Help: 9th Grade

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Physics
A hill that has a 31.4 % grade is one that rises 31.4 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?
Monday, August 27, 2012 at 5:51pm

math
I need help answering the following question: A road sign reads: "5% grade next 4 miles." What is the change in elevation from the lookout to the point four miles ahead (to the nearest foot)?
Sunday, August 26, 2012 at 10:01pm

english
As teachers on this board. How can I help my son to improve on his spelling, he is in the 6th grade?
Sunday, August 26, 2012 at 12:35pm

math
An eighth-grade student claims she can prove that subtraction of integers is commutative. She points out that if a and b are integers, then a-b = a+ -b. Since addition is commutative, so is subtraction. What is your response?
Friday, August 24, 2012 at 9:51am

8TH GRADE MATH EXPRESSIONS
A catering business charges $50 for setting p a meal and $150 for enough food for 12 people. You will be using the caterer for an upcoming celebration. There will be 32 people at the party. Find the total cost to use the caterer for the party.
Thursday, August 23, 2012 at 9:47pm

8TH GRADE MATH EXPRESSIONS
THE TOTAL COST FOR 4 PEOPLE TO RIDE THE BUS IF THE FARE OF .75 IS INCREASED BY D DOLLARS.
Thursday, August 23, 2012 at 8:45pm

MATH 5TH GRADE (VARIABLES AND EXPRESSIONS)
LAURA HAD 5 MORE HITS THAN SUSAN. HOW MANY HITS DID LAURA HAVE?
Thursday, August 23, 2012 at 8:31pm

5th grade english
is cactus already plural
Thursday, August 23, 2012 at 7:55pm

Algebra 8th grade
The length of a rectangle is twice its width. If the area is 30 square units, find the dimensions of the rectangle.
Wednesday, August 22, 2012 at 9:57pm

7th Grade Math
In an addition problem the answer should have the same number of significant figures as the measurement with the mot decimal places. True or False? I say True.
Tuesday, August 21, 2012 at 2:05pm

american legion award???
What is american legion award??? My mom got that award when she was in 8th grade.
Tuesday, August 21, 2012 at 9:53am

4th grade science
What is a silk case covering the moth larva?
Tuesday, August 21, 2012 at 3:33am

7th Grade Science
What can be inferred after performing the experiments in the atomic theory lab? A) Where matter comes from B) How salt is formed C) If salt can dissolve in water D) If matter is created or destroyed Is it D?
Tuesday, August 21, 2012 at 1:48am

Math 5 grade
3/4 [5/2] The answer would be 15/8. Right?
Tuesday, August 21, 2012 at 1:04am

8th grade math
Hi! I need some help with absolute value. First, I want to ask is that for absolute value, is that if the absolute value is |6| then would the answer be 6 or -6? I am really confused with this so if somebody could explain this to me, it would be a big help, thank you!
Monday, August 20, 2012 at 9:58pm

writing
I am in 8th grade and I just want to see if this essay is persuasive the topic is Your surrondingss create who you are?
Thursday, August 16, 2012 at 4:20pm

6th Grade Math: Proportions
14/38=X/29. I'm still confused about figuring out what x is and getting X on its own. Please Help!!!
Wednesday, August 8, 2012 at 7:46pm

6th grade math
Cameron is making bead necklaces. Hehas 90 green beads Nd 108 blue beads. what is the greatest number of identical necklace es he can make if he wants to use all the beads
Wednesday, August 8, 2012 at 7:19pm

7th grade math
solve for k -4k-8k+7=-53 Please explain how you found your answer!! Please help!!
Wednesday, August 8, 2012 at 3:55pm

Writing
I need to write the top ten reasons I am happy to be back in school. (6th grade). What would you write?
Tuesday, August 7, 2012 at 5:12pm

health
It’s been widely reported that having a positive attitude will improve a person’s ________. A. Physical health B. Mental health C. Grade point average D. Both A and B B?
Friday, August 3, 2012 at 10:02pm

Dynamics
The power developed by a man in riding up a 6 percent grade at a constant speed is 200 w. The man and his bicycle have a combined mass of 80 kg. Determine the speed of riding
Tuesday, July 31, 2012 at 1:55am

statistics
1. How do the 3rd grade boys’ weight in Principal Ben’s school compare to the national average (mean weight = 90, sd =15)? Provide the IV, DV, and best method of analysis
Wednesday, July 25, 2012 at 1:22pm

math advanced functions grade 12
Find the solution set to the following rational inequality, 240/x+8 > 20x/x+1
Tuesday, July 24, 2012 at 6:25pm

Principle processes of flotation separation of Pol
Direct Preferential Flotation Definition of this method is: separate various helpful minerals in proper order. With its feature of high flexibility, it can adapt the change of ore grade, especially for sulphide ore of high grade. Xilin, Fankou, Lechang lead-zinc dressing plant...
Sunday, July 22, 2012 at 10:08pm

math grade 12
What is the arc length if the central angle is 225 degrees and the radius of a circle is 3 cm? pls help. i don"t get it
Saturday, July 21, 2012 at 8:41pm

math grade 12
i need to know the mathematical model for finding the cooling of a hot liquid. and what the letters mean. pls help thanks
Wednesday, July 18, 2012 at 2:47pm

math grade 12
how to solve log basex 8=-1/2 pls help
Tuesday, July 17, 2012 at 6:30pm

Psychology
Nisa has grown up in a small village in the foothills.There was no electricity,and water had to be hand-pumped.They seldom saw people from the "outside."When she entered school,the bus had to pick her up at 6:30 a.m.in order for her to arrive at school by 8:30 a.m....
Tuesday, July 10, 2012 at 9:42am

physics
suppose your car is on a 5% grade,if your car weighs 15,000N what is the component of its weight parallel to the road?
Saturday, July 7, 2012 at 4:12pm

8th Grade English
Basic Skills Survey???? I went on my school's website for 8th grade this what we be doing in september: English Diagnostic Basic Skills Survey Summer Reading Assessment Friendly Letter Review Business Letter i already know about the summer reading and friendly letter thing...
Saturday, July 7, 2012 at 3:59pm

Grammas and Composition 11th grade
I PURCHASED A USED BOOK TO COMPLETE A CORRESPONDENCE COURSE. PAGE 291 AND 292 IS MISSSING AND I NEED QUESTIONS 15-20. CAN SOMEONE HELP ME?
Tuesday, July 3, 2012 at 8:39am

Grammar
What does nonessential appositives and appositive phrase or phrases mean? (It's the common rules 3a.. Untit 5, 7th Grade.)
Wednesday, June 27, 2012 at 10:05pm

4 grade array NEED ASAP!!
whats an array? and how would i show it with plastic dimes. i need to help kids find 8 x 70 can you explain how you would do it??
Tuesday, June 26, 2012 at 12:24pm

Grade 12 Calculus University
Hello ^___^ Please help me! Thank you very very much! Determine if the planes are parallel. [x,y,z] = [1,2,2] + s[0,-1,0] + t[0,0,1] [x,y,z] = [1,0,-3] + s[0,0,1] + t[-1,0,0] thank you ^__^Y
Thursday, June 21, 2012 at 4:10pm

Calculus grade 12
find the slope of the tangent line to y^4 = 3x^2 - 2x at the point (1,1)
Thursday, June 21, 2012 at 2:15pm

Calculus grade 12
find dy/dx by implicit differentiation a) xy + x^5y^2 + 3x^3 - 4 = 1 b) lny = cos x thank you
Thursday, June 21, 2012 at 1:50pm

Calculus grade 12
hi i need help differentiating these.. 1. y = cos(3x^2 + 2x) 2. y = ln(3x^2 + 5) thank you
Thursday, June 21, 2012 at 1:46pm

us history grade 7
what are the pros and cons of the fur trade?
Thursday, June 21, 2012 at 11:01am

Grade 11 Math
From a window in apartment building the angle of evaluation from the top of the flag pole across the street is 9 degrees. The angle of depression is 22 to the base of flag. How tall is flag pole to the nearest of tenth meter?
Sunday, June 17, 2012 at 6:31pm

Calculus Grade 12
determine the coordinates of two points on the plane with equation 5x + 4y - 3z = 6
Friday, June 15, 2012 at 3:13pm

Calculus Review for exam grade 12, please help.
use the derivatives of y=sinx and y=cosx to develop the derivative of y=tanx
Friday, June 15, 2012 at 3:12pm

math
ok i have 10th grade math next year and i dont even know half the stuff for this year and its summer brake and im worrying about math..what do i do
Thursday, June 14, 2012 at 2:53am

angebra
ok i have 19th grade algebra next yeah and i dont even know half the stuff from thid year...soo what di i do cuz i am totsly going to fail i mrn itd summy snd im worried about algebra
Thursday, June 14, 2012 at 2:51am

12th grade math
a block of mass 77kg is placed at the top of a frictionless plane that is inclined 46degrees to the horizontal. The height of the plane is 23 meters. find the speed of the block at the bottom of the plane. Show the steps please, -thanks
Monday, June 11, 2012 at 8:17pm

3 grade math ms sue
1- Michael used addition to find 8*100 and he said product is 80. What did he do wrong? my son did it- the product is not 80 it's 800. 8*100=800
Wednesday, June 6, 2012 at 4:14pm

fourth grade math
the passengers of a cruise ship were shocked to learn that their ship was sinking. the ship is 218 ft tall and is sinking at the rate of 1/2 ft per minute. how long do the passengers have to abandon the ship?
Tuesday, June 5, 2012 at 8:40pm

to ms.sue
when i went on my school website: philasd dot org: mayfair school, the summer project for going to 5th grade was confusing and what does it mean by diagnol, across?
Tuesday, June 5, 2012 at 8:39pm

3 grade math ms sue
1-Two shapes can be put together in different ways. using the triangles in exercise 1,draw pictures to show an example. my son need help in here please help my son thank you
Tuesday, June 5, 2012 at 4:12pm

Chemistry (11th grade)
we have the following equation- 2HCl+CuSO4 yields H2SO4+CuCl2. the question is if 7 moles of HCl react, how many moles of H2SO4 will be produced?
Sunday, June 3, 2012 at 10:14pm

math
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 16% of your total grade, each major test is worth 21%, ...
Sunday, June 3, 2012 at 1:39pm

business writing
has anyone wrote a business letter to a human resouse for a grade? Please give me tip on this type of paper
Saturday, June 2, 2012 at 1:23am

Introduction to Psychology
Alexander, a fifth- grade teacher, believes that Kimberly's behavior is a result of poor parenting, The school concerned with her inability to focus, attend to directions, and recall information from the previous day or events from earlier in the day.
Wednesday, May 30, 2012 at 11:37am

3rd grade math
Please help not sure how to explain to my son. How should I set this up. Sam has the same chores each week, but he wants to add variety. Suppose Sam has to empty trash, water the plants, fill the bird feeder, and sort the recycling. How many different ways can Sam complete ...
Tuesday, May 29, 2012 at 11:33pm

3rd grade math
Please help not sure how to explain to my son. How should I set this up. Sam has the same chores each week, but he wants to add variety. Suppose Sam has to empty trash, water the plants, fill the bird feeder, and sort the recycling. How many different ways can Sam complete ...
Tuesday, May 29, 2012 at 11:33pm

10th grade chemistry
If an excess of nitrogen gas reacts with 25.0 L of hydrogen gas, according to the reaction below, how many L of ammonia will be produced? N2(g) + 3H2(g) ---> 2NH3(g)
Tuesday, May 29, 2012 at 6:27pm

Math (grade 10)
On the design plan for a garden, a straight path suns from (-25,20) to (40,36). A lamp is going to be placed at the midpoint of the path. Determine the coordinates for the lamp.
Monday, May 28, 2012 at 6:12pm

6th grade math
Find the volume of the right triangular prism. The bases are equilateral triangles with a length of 6 mm. The height of the prism is 8.4 mm. (Round to the nearest tenth.)
Monday, May 28, 2012 at 3:29am

Calculus Grade 12 University
8. Find the vector equation of the line in which the 2 planes 2x - 5y + 3z = 12 and 3x + 4y - 3z = 6 meet.
Saturday, May 26, 2012 at 1:27am

Calculus grade 12
7. Where does the line r = (1, 2, -5) + t (2, -3, 1) meet the plane 2x + 5y - 3z = 6?
Saturday, May 26, 2012 at 1:27am

math sixth grade
The square chessboard has an area of 196 square inches what is the length on inchesof one side of the chess board
Thursday, May 24, 2012 at 7:00pm

3 grade math ms sue
1-Explain how you can use a number line to show that 3/6 and 1/2 are equivalent fractions. my son write- you can show these fractions are equivalent because if the numerator is half of the denomirator it can be 1/2 so 3/6 is just like 1/2. so thats why they are equivalent. ...
Wednesday, May 23, 2012 at 8:28pm

English 12 grade
which pilgrim had the false holy relics? The caterbury Tales.
Monday, May 21, 2012 at 7:51pm

12 grade
Chaucer accuses the doctor and the apothecary of dishonesty. what exactly does he say about them?
Monday, May 21, 2012 at 7:48pm

8th grade math
please help one blade of a fan is parallel to the floor. what degree of rotation of the fan puts the blade at the top of the fan
Monday, May 21, 2012 at 6:12pm

8 grade
27.6 x 5.2 my answer is 138.00 is this right
Monday, May 21, 2012 at 5:54pm

English 12 grade
Which pilgrim preferred books to food and clothe?
Monday, May 21, 2012 at 5:39pm

8th grade math
algebraic expression using words from the sum of a number,x,and9
Monday, May 21, 2012 at 5:17pm

8th grade math
how do you solve x+1/10= a whole number
Monday, May 21, 2012 at 12:04pm

6th grade science
the purpose of including a control in an experiment is to provide_______. can someone please help me solve what the blank/____ is???
Saturday, May 19, 2012 at 9:56pm

6th grade history
Where did the mound builders live???
Saturday, May 19, 2012 at 4:37pm

5th Grade Writing
do you use its or it's in this sentence "The horse hurt _____ leg"?
Thursday, May 17, 2012 at 8:44pm

Math Problem ( 6th grade math)
Brandon tosses a coin 500 times. The coin lands on tails 320 times. A: What is the experamental probability of getting heads? B: Is the coin fair or unfair? Explain you answer.
Wednesday, May 16, 2012 at 4:15pm

5th Grade Math Algebraic Expressions
What is the algebraic expression for six is fifteen less than three times a number?Please Help.! -Keke
Tuesday, May 15, 2012 at 7:12pm

6 grade math
Can you help me with this integer problem? -8+6+(-10)+(-2)*(-10) is it 8????
Tuesday, May 15, 2012 at 6:17pm

grade 11 math
at giant tv sales, you can chose between 2 payments options for a new tv. 1st option is 2 pay $2399.99. 2nd option is to pay a $399.99 downpayment plus $2200.00 after one year. if interset is 4.2% per year, compunded quarterly, wich option is a better deal
Tuesday, May 15, 2012 at 3:49pm

8 th grade math
each side of square is 6 in. long . a scale factor of 2/3 is used to draw a similar square. how long is each side of similar square . choices are 4in. ,6 in., 8in. ,answer not here i chose 8 in. is that right
Monday, May 14, 2012 at 9:53pm

math 8th grade
perimeter of a rectangle is 32 in. wnat are the length and width that will give the rectangle the largest possible area? choices are 4in x 12in. ,5in.x 11 in.,7 in.x 9 in. ,8 in. x 8 in. i think 4 in. x 12in
Monday, May 14, 2012 at 9:32pm

math 8th grade
if length and width of a 3in. x5 ln. photo are tripled what scale factor relates the area 3,9,12,27 i answered 27 is this correct i tried 9 but got no answer
Monday, May 14, 2012 at 9:22pm

math 8th grade
22 points in game 1,18 points in game2, 20 in game 3 what was their mean score for these 3 games i answered 20 is that right
Monday, May 14, 2012 at 8:50pm

8th grade math
length and width of a 3ln. x 5jn. photo are tripled what scale factor relates the areas choices are 3,9,12,27 i chose 3 because it said triple is that right
Monday, May 14, 2012 at 8:31pm

8 th grade math
12 is 150% of what number choices are 8,10, 18, 24 i answered 8 is that right?
Monday, May 14, 2012 at 8:13pm

8 th grade math
there are 6cars,2 trucks, and 2 motorcycles in parking lot. what is the probability that the first vehicle will be a truck? choices are 1/10 ,4/5, 1/5 or answer not here . i answered 1/10 is this right
Monday, May 14, 2012 at 7:50pm

8 th grade math
ann batted 12 times and made 9 hits what is the percent of her times to bat i put 66 2/3 is that right or it could be 75%
Monday, May 14, 2012 at 7:38pm

8 th grade math
length and width of a 3in x 5 in photo are tripled what scale factor is used i put 9 id that right
Monday, May 14, 2012 at 7:33pm

8 th grade math
perimeter of rectangular is 32 in .what are the length and width that will give the rectangle the largest possible area 4in,x12in. 5in.x11 in. ,7in. x9in. ,8in x8in. i answered 8x8
Monday, May 14, 2012 at 7:28pm

8 th grade math
what is length of hypotenuse 16m is bottom measure and 12 m is side i added them together and got 28m is this right
Monday, May 14, 2012 at 7:13pm

8 th grade math
a stack of fierwood is 8ft.x4ft.x4ft wood costs 1.00 per cubic foot what is total cost of stack 64.00
Monday, May 14, 2012 at 6:56pm

8th grade math
is 2/3 a fraction that can be renamed as a repeating decimal
Monday, May 14, 2012 at 6:51pm

8 th grade
person 6 ft.tall casts a shadow of 8 ft. long what is height of nearby building that casts a 72 ft shadow at same time
Monday, May 14, 2012 at 6:22pm

8 th grade math
3in.x 5in. photo are triped what scale factor is used
Monday, May 14, 2012 at 6:16pm

Soanish-8th grade please check answer
I'm not sure what they're asking in this question- are they asking where you are when you vacation? ¿Dondé te ustedes cuando de vacaciones? Answer-Yo estoy en Florida.
Monday, May 14, 2012 at 10:35am

6th grade math
Please check to make sure I did these correctly, so confusing. Thank you. Rename each fraction as a terminating or repeating decimal 13/20 .65 1/3 0.3333333333333333 2/9 0.2222222222222222 5/12 0.4166666666666667 1/16 0.0625 Rename each mixed number as a terminating or ...
Sunday, May 13, 2012 at 9:44pm

Psychology
Alexander, a fifth grade teacher, believes that Kimberly's behvior is a result of poor parenting. The school counselor is concerned with her inability to focus, attendto directions, and recall information from the prevous day or events from earlier in the day. Alexander ...
Sunday, May 13, 2012 at 6:20am

track and field
is a speed of 6.5 on a tredmill for five minutes equal to a good mark for a seventh grade girl to get 67 seconds in the 4 by 400?
Saturday, May 12, 2012 at 8:51pm

poems
does anyone know a poem about seashores and it has to be aroung grade 6 level thank u?
Saturday, May 12, 2012 at 7:18pm

Soanish-8th grade Help!
I'm trying to conjugate this in the past tense tú/presentarse would I conjugate it in past tense like this- (tú te presentaste) Something looks wrong with it
Saturday, May 12, 2012 at 4:40pm

writing
I have a dispute with my teacher in 7th grade. In referring to McCarthyism in the phrase "towards the end of this reign of terror", is "reign of terror" a metaphor? Thanks.
Thursday, May 10, 2012 at 10:59am

4th grade social studies
how did the marquette and joliet expedition affect the great lakes region?
Wednesday, May 9, 2012 at 7:30pm

10th grade social studies
how did islamic civilization spread to europe africa and asia
Wednesday, May 9, 2012 at 7:18pm

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