Monday
April 21, 2014

Posts by Cherie


Total # Posts: 139

Astrology
Why is it helpful to use the Celestial Sphere to find the position of objects in the night sky. Please help!, Thank you.

Circle geometry
Please help Explain how I figure this out. A circle has diameter 70cm. A chord in the circle is 50cm long. How far is the chord from the center of the circle? I have been stuck on this for days. I appreciate any help. Thank you!!

Circle Geometry
A wheel has radius 30 cm.It rolls along the ground toward a tack that is 58cm from the point where the wheel currently touches the ground. What is the distance between the tack and the closest point on the circumference of the wheel! I don't understand thus it all! Please ...

Physics
Why is using mirrors to generate electricity not a common practice?

Physics
A high efficiency natural gas furnace is 92% efficient. How many joules of output energy will 750kJ of input fuel provide? Please help! Thank you.

Physics
Ken has five 200W security lights on outside of home. How much energy do the security lights use in 8 hrs? If the cost of electricity is 8 cents per kWh,what is the cost of operating the security lights ? Please help I'm not sure which formula to use?

Physics
Does the solar powered calculator work when there is no bright light falling on the solar panel? Explain. I think it does but I don't know why please help explain this. Thank you

Physics
In a series circuit, the power source is 9-volt battery and three resistors. R1=7ohm R2=9ohm R3=2ohm What is the total resistance in this series circuit? What is the current? Please help I don't understand this!, Thank you

Science
Does a solar powered calculator work when there is no bright light falling on the solar panel? Explain

Science
What is a harmful effect of electrical resistance?

Science
What would happen if you moved the bar magnets further away from the armature when the St.Louis motor was running? Please help! I have been searching for r The answer for days and can't find it anywhere Thank you

Science
Why are generators not allowed in Niagara Falls? I am assuming that it has something to do with environment but I can't find the exact answer anywhere ?

Science
What three things can be done to increase the speed and power of a St.Louis electric motor?

Science
What would happen to an electric motor if the direction of the electric current in the armature did not change directions? Explain. I have read my textbook and googled it and I dint understand what would happen. Please help. Thank you

Math
Please help me with this!! The actual length of the picnic table is 180cm with legs 60cm. What is the scale factor for this diagram?

Math
Please Help!!, The dimensions of a photo of a mountain bike are 15cm by 12cm. An enlargement is to be made for a poster with dimensions 4.0m by 3.2m. What is the scale factor of the poster to the nearest tenth?

Math
Please help! 1.3-2.5x<or equal to -1.2x-0.52 The answer is x>or equal to 1.3 I have been on this for hours and can't figure it out Thank you

Math
Please Help!!!! I don't understand this at all. -(5f/6)-2/3>4/3 The neg sign is beside 5f/6

Math
Please Help!!!!!!! 1/2+4/7p>13/10 The p is beside 4/7. I have been stuck on this all morning any help and how it was solved would be appreciated. Thanks for your time and help.

Math
I have a triangle with one side 2y^2-3, a side with 2y^2+y+5, and the other side y^2+y+5. I had to write expression and simplify. This is what I got: (2y^2-3)+(y^2+y+5)+(2y^2+y+5) =5y^2+2y+7 I now have to determine the perimeter if y=3cm. I don't know how to do thus part p...

Math
The difference between two polynomials is (5x+3).One of the two polynomials is (4x+1-3x^2). What is the other polynomial? Please help! Thank you

Science
When would you want to have a corrosive reaction? I can find when you wouldn't want to have one but not when you wouldn't. Please help!! Thank you

Science
Citric acid has the formula C3H3OH(COOH)3. How many atoms of carbon,hydrogen and oxygen are in each molecule? Please help I don't understand this!! Thank you

Science
Please help I don't understand this! If the following compound is combined, how many if each would be needed to make electrically neutral compound? Fe(3+) &Cl(1-)

Math
(1/2)+3/5 /[9/10-(-3/5)]= I got 1.5 is this correct? If not could you please show me how to do this? If Steve answers thank you so much for all your help you are awesome:))

Math
Please help explain how to get answer! -8.6*14.6-5.3/[(-19.4)-8.6]/(-2.9)*6.3-(-9.5)

Math
(-1/2)+3/5/[9/10-(3/5)] I got 1/15 is this correct? I don't think so please help and explain how you did this :)

Science
Please help !!! A student wanted to determine the density of an object made of an unknown substance. She found the mass of the object was 335g. Then she did water displacement to determine the objects volume. The initial volume of the water was 50.0 mL. With the object submerg...

Math
Please help with this!!! 3/8-9/4[(-5/4)+(-1/10)] I cannot figure this out.

Science
In an experiment to find out how the proportion of cement in a concrete mixture affects the products strenghth what would be two controlled variables and what could a possible source of error in this experiment be ? Thank you for your help!

Math
How do I write -2.3 as a rational number?

Math
Is -6/5 greater than -5/6?

Math
-3/4-1/2 I get -1/4 but my dad is saying -1 1/4. Can you please help with the answer and explain how you came up with it? Thank you

Science
Why is it difficult to reestablish a species permanently into its natural environment once the total number of a species drop below a population of 500? Thank you for your help.

math
I am trying to figure out the surface area of a garage. It has an A shaped roof. There is an overhang of 0.5m on each corner. Do I include this in determining the area of the roof? I need to figure out how much stucco is needed for the garage minus roof, window, and door. If i...

Science
Why are the different gene combinations in the zygote important to survival of the species. Please help Thank you!!!!

Math
I have to determine the unknown length of a right triangke to the nearest tenth of a unit. One side is 7m and the base is 10m. I got a friend to do this and age came up with 7.1m as the answer. When I do the steps I get the answer 12.21. I believe my friend is right but need h...

Math
[(-1)^3]^4-[(-1)^4/(-1)^3]^2 PLEASE HELP!!! The answer i come up with does not match answer on calculator. The big brackets are confusing me. Please help to explain this. Thanks so much for your help especially Steve

Math
(3^2*4^3)^2-(4^4/4^2)^2 Please help explain how to do this. I am not sure how to do this ! Thank you

Math
3^4 /3^3 + 4^2 *4^0/2^4 Please help and explains how you got the answer. I have been stuck on this for awhile and am not sure how to do this. Thank you!

Social Studies
To what extent did the Japanese worldview change during the Meiji period.

Math
A spinner has three congruent sectors colored orange, green, and purple. Every spin has has 1/3 chance of landing on any color and there is 1/9 chance of landing on orange and then on purple. There is 1/3 chance of landing on same color twice in a row. I need to make a tree di...

Math
I really need help please!! Karen, Gavin, Nasra, and Ali each have a deck of cards. Each student randomly draws a card from the deck. Find the probability of each event. a) each student draws a club. b) Karen draws a red card, Gavin draws a king, Nasra draws a black card, Ali ...

Math
Karen, Gavin, Nasra, and Ali each have a deck of playing cards. Each student randomly draws a card from the deck. Find the probability of these events: a) Each student draws a club. b) Karen draws a red card, Gavin draws a king, Nasra draws a black card, Ali draws the 2 of clu...

Math
Every time Jim shoots a free throw in basketball, he has an 80% chance of making the shot. He is given 3 free throws. Find the probability of each event. a) misses all 3 shots b) misses the first two shots and makes the third. Can someone please explain to me how to get the an...

Bob pursley
Sorry I misspelled your name in my previous post:)

Math
Each time Parker shoots a free throw in basketball, he has an 80% chance of making the shot. Suppose he is given 3 free throws. Find the probability of each event. a) Makes the basket, misses the basket, makes the baset b) makes all 3 shots Please help having hard time with this

Math
Please help I don't get how to do this! A spinner has three congruent sectors colored orange, green, and purple. Use the rule of probability of each event. a) landing on orange, then landing on purple b) landing on the same color 2 times in a row.

Math
Can someone please help me! A regular 6sided die is rolled three times. Find the probability of each event: a) Three 6s in a row b) 5,1,even c) Odd, greater than 2,5 Show all work I have been looking at examples and trying all night and I can't figure this out.

Science
Please please help this is the second time I have posted this question. Calculate the amount of work it will take to lift a lawn mower with a mass of 8kg onto the back of a truck which is 0.75m off the ground.show all conversions in your work.

Math
Every time Mr. Cold born throws a ball of paper in the garbage can, the probability the ball goes in the cans is 3/4. What is the probability he misses 2 times in a row? Please show all work. Please help I don't understand probability

science
A hydraulic jack is needed to raise an object with a force of 4000 N to a height of 3 metres above the ground. Will the jack do the job? (Answer after working through the rest of the question. I would really appreciate it if someone would please help me with this question. Tha...

Math
What is the probability of tossing two coins and having them both show heads? Show all work. Please help I don't understand this.

science
Calculate the work done by lifting a stack of books 0.5 m onto a table. The force you exerted eas 150N. Please help I am lost as how to do this

science
Convert 32 newton-meters to Joules. Please help!

Social Studies
Writeacher The period of time fir the social question is the Edo period. Sorry about thar!

Social Studies
How did social controls shape Japenese identity and citizenship. In your response be sure to discuss the areas of religion and class structure. Please help as I do not really understand the question

Math
The cost of Admission to a fair is $10, plus $3 per ride. An equation for this relation is C=10+3r, where r represents the number of rides a person goes on, and C represents the total cost of admission and rides. Make a table of values for the relation . Please help do not und...

Math
I need to make a table where y=-x using the numbers -3 to 3. I don't understand.

Math
Ms.Sue You helped me with a table but now I have to do one where y=-x using integers from -3 to 3. I am still unsure of how to do this. When I tried I got the same results as the previous table. I really appreciate your help and am trying very hard to understand this but am fi...

Math
I have to make a table with y on one side and x on the other. y=x. I have to provide integer values of x from -3 to 3. I don't understand how to do this. Please help!

Math
Solve equation. -5(s-7) = 15

Math
Uncle Ritchie has some $10 bills in his wallet. He shares all of them equally among his 4 nieces and nephews. Each of the nieces and nephews then donates two $10 bills to charity. They then each have five $10 bills. How many $10 bills did Uncle Ritchie have in his wallet? a) w...

Math
Please help!!! Scott bought 54m of fencing to enclose a rectangular plot of land. The width of the rectangular plot is 12m. Assume Scott uses all the fencing. What is the length of the rectangular plot of land? a) choose a variable to represent the length of the rectangular pl...

Math
Expand and simplify. 2(3+4y+7) I got 8y + 20 but I don't think this is the right answer.

math
A school uniform consists of a shirt and a pair of shorts. A shirt costs $22. A pair of shorts costs $15. Write an expression to find the cost of supplying n students with uniforms. Evaluate the expression for 8 students.

Math
-17 + n/ -3=9 I don't understand this. Please help

Math
t/-9 + 8= -5 Please help with this when I do it my answer is not -5.

math
One-quarter of the chicken pieces in the dish are wings. There are 7 wings. Hiw many chicken pieces are in the dish? Write an equation to solve the problem.

math
The Grade 8 students had a graduation dinner. They paid a flat rate of $125 for the use of the hall, plus $13 for each student who attended. The total cost of the dinner was $944. How many students attended the dinner ? Write an equation to solve the problem.

math
Jack and Diane went to the movies. They each paid the same amount for an admission ticket. Together, they spent $12 on snacks. The total cost of admission and snacks for Jack and Diane was $26. How much was each admission ticket? Choose a variable. Write an equation you could ...

Math
Find the missing number in this pair of equivalent ratios. _:12 : 36 and 8 : 4 : 12

math
Ivan has completed 45% of his walk. He has already walked 9 km. How much farther does he have left to walk? I don't understand how to do this. Could you please help and show me how you got this answer? Thank you.

Science
Glass bricks are used where people want light allowed through, but still have privacy. What do the bricks do to make this happen? Please help I have searched everything and can not find the answer.

Science
Glass bricks are used where people want light allowed through, but still have privacy. What do the bricks do to make this happen?

science
What happens to refraction when the angle of incidence lays on the normal line? Please help I have searched everywhere and can't find the answer!!!

Science
What happens to refraction when the angle of incidence lies on the normal line?

science
At what angle of incidence does refraction stop and reflection begin?

Social Studies
How did being part of the Arab Islamic world affect Spain?

Math
Hi Steve, You helped me with a question earlier today about finding surface area of a triangular prism with the base being an equilateral triangle . I got the answer 386.6 Is this correct.? I tried to follow your equation and am having a bit of trouble. Thanks for all your help.

Math
A triangular prism has an equilateral triangle as its base. The base of the triangle is 10cm and its height is 10cm. The length of the prism is also 10cm. Find it's surface area

Math
The surface area of a cube is 150cm squared. The area of one face of the cube is 25cm squared. What is the length of one edge of the cube?

Math
Tracy made a stained glass jewellery box. It measured 20cm by 12cm by 8cm. a) About how much glass did Tracy use? b) one piece of glass has an area of 100 cm squared and costs $3.65. How much did the glass cost?(assume all pieces can be used Please help don't understand th...

Chemistry
Briefly explain what the consequense would be if excess 6M NaOH solution instead of ^m NH3 solution were used to separate Fe3+ and Al3+ ions from Ca2+, Cu2+,and K+ ions at pH 9-10.

Math
When you divide a proper fraction by an improper fraction, is the quotient less than 1,greater than 1,or equal to 1? I think it is less than one but I'm not sure

math
Antoine estimates he can read one and a quarter chapter of a novel in one hour. Jenna estimates she can read three chapters of the same novel in 2 5/6 hours. Antoine read for 8 hours. Jenna read for 6 hours. Who read more chapters? Show work. Please help!!!!

math
Ms.Lecky ordered pizza for a party. 1 5/8 of the cheese pizzas and 2/3 of the ham pizza were not eaten. How much pizza was left?

Math
Hi Ms. Sue I got 34 for answer c and 17/30 for answer d Thanks for your help, much appreciated

Math
A dock is 7 3/4m high. The portion of the dock above water one day was measured at 2 2/5 m high. How much of the dock structure was below water that day?

Math
Solve the problem. Estimate to check your solution is reasonable. 1. During a 1 hour phone in talk show eight callers made calls hat took 3 1/4 minutes each. a) How many minutes were used by the eight callers? b) what fraction of the hour was used by callers? c) how many minut...

Math
Thank you Steve for your help! I need help on another question. I have to show 10/8 divided by 5/8 on a number line. I don't know how to set this up. I am lost!!! Please help to explain this. Thank you

Math
Thank you Steve for all your help! I have another question . I need to show 10/8 divided by 5/8 on a number line. I am completely lost!!! Please explain how to do this

Math
Amber made 5 3/4 pitchers of iced tea for her friends. They drank 2/3 of the iced tea. How many pitchers of iced tea did they drink? Do I subtract to get the answer?

math
How do you solve 5/8*3 4/5 It should read five over eight multiplied by three and four fifths

Math
Daphne replaced light bulbs in her mothers store.She had 3/4 of a box of light bulbs. She used 1/3 of the bulbs. a. What fraction of the box of light bulbs was left? b. How many light bulbs are in a full box? Explain. Thanks to everyone who helps answer questions it is appreci...

Math
I am having a hard time doing equivalent fractions. Would 3/5 of 2/9 be equivalent? Please help

Math
One third of the students in mrs. hayko's class walk to school. Of the students who do not walk, four-fifths take the bus. a) what fraction of the students in Mrs. Hayko's class take the bus to school? b) How many students might there be in her class?

Math
Ella babysits for 3/4 hour before school each morning. a) How many hours does she babysit in a 5- day work week? b) How many hours does she babysit in 4 weeks?

math
How would I answer this question? 2 1/8-1 3/4 I can't take 1 away from 3.

Math
Why are 2/3, 4/6, and 6/9 equivalent fractions?

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