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Posts by lina

Total # Posts: 235

Math
Jon's test grades are 76,84,83 and 78.What does he need to make on his next test to have an 83 average?

Economic
in the early 1980s when the Polish people had to stand in long lines to purchase most consumer goods, the government ordered that every third place in line be reserved for pregnant women or disabled persons. this was presumably done to reduce their discomfort. do you think it ...

Chem
Is #5's answer: 1.0 M H2SO4? what about #2?

Chem
2. I still don't get this or is it the same equation. 3. Answer: 0.254 M KOH 5. Am I still using the equation?

Chem
2. Suppose a chemistry student made 2000. mL of 6.00 M HCl. He accidently spilled half of this solution on the floor. What is the Molarity of HCL left in the beaker? Explain the answer... - for this problem, would I use the eq'N, M1V1=M2V2. 3. What is the molarity of a sol...

CHEMHelp
Is 1 or part A's answer then 321 and question 2's answer is 375...??

CHEMHelp
Now sure how to do this! 1. DESCRIBE & CALCULATE how to make 750. mL of a 1.25 M sucrose solution 2. Concentrated HCl has a molarity of 12 M. DESCRIBE & CALCULATE how to make 1.50 L of a 3.00 M HCl.

US History
If you might, please answer this quickly. I haven't much time to finish this test. Thanks!

US History
Which region of this map was ceded by France to the United States? North Northeast *** South and southeast West The picture shows West Florida in the middle, the Gulf of Mexico below it, part of some other states near the sides and top.

Math
If 2 gulps = 5 slurps, and 2 slurps = 7 sips, then 35 sips is equal to how many gulps?

math
In Heather's class room there are red chairs,yellow chairs, and blue chairs. There are 3 red chairs. There are 4 times as many yellow chairs as red chairs, and there are 3 fewer blue chairs than yellow chairs. How many chairs are there in Heather's classroom?

algebra 1
Write an equation in slope-intercept form for the line parallel to y = 5x - 2 that passes through the point (8, -2)

Math
Oliver has one juice box. Lucy has one fewer juice box than oliver. How many juice boxes does lucy have?

algebra
write an algebraic expression that let x represent the unknown value seven times a quantity

Math
Ryan bought 2 1/4 pounds of almonds and divided them into bags with 1/8 pound in each bag.

Transformations ALGEBRA
write a function that is shifted 2 units up from the function f(x)=|x|+3 Write a function that is shifted 4 units down from the function f(x)=|x-3|+1

Physics
Calculate the thermal energy required to convert 5kg of ice at 0 Celsius to steam at 100 Celsius

Physical science
How much more does someone with a bachlors degree usually earn than someone with a high school deploma?

Physical science
What are some of the reasons for income differences?

physics
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 22.0 m/s. The cliff is h = 38.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the beach below the cliff? s...

physics
A figure skater glides along a circular path of radius 4.70 m. (a) If she coasts around one fourth of the circle, find the magnitude of the displacement vector. m (b) If she coasts around one fourth of the circle, find what distance she skated. m (c) What is the magnitude of ...

Algebra 1
-2, -12, -72, -432 find the 8th term 0.2, 1.6, 12.8, 102.4 find the 6th term 24, 12, 6, 3 find the 7th term

math
I have $0.39. There is 1 more penny than nickel, and one more nickel than dimes. The coins are?

Math
Thanks :)

Math
What does it mean to get a 150% salary raise?

Physics
Also got lost on this question: A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235m below. If the plane is traveling horizontally with a speed of 250 km/h (69.4 m/s), (a) how far in advance of the recipients (horizontal distance) must the ...

Physics
I'm having trouble where to start with this question.. Any help would be helpful. A projectile is fired with an initial speed of 75.2 m/s at an angle of 34.5° above the horizontal on a long flat firing range. Determine (a) the maximum height reached by the projectile...

Physics
I did the problem but i'm confused on what to do next: 1.A hunter aims directly at a target (on the same level) 120m away. (a) If the bullet leaves the gun at a speed of 250m/s, by how much will it miss the target? (b) At what angle should the gun be aimed so the target ...

Chemistry Really Confused!!
'm confused on how to set up the problem for each question.. 1.) Calculate the empirical formula of a compound if a 6.21 g sample contains 1.67g of cerium and the remainder iodine 2.) An unknown compound contains 85.64% carbon with the remainder hydrogen. It has a molar ...

Chemistry... lost help
Please help!

Chemistry
I'm confused on how to set up the problem for each question.. 1.) Calculate the empirical formula of a compound if a 6.21 g sample contains 1.67g of cerium and the remainder iodine 2.) An unknown compound contains 85.64% carbon with the remainder hydrogen. It has a molar ...

ANY HELP WOULD AT ALL
Would be a major Extreme Help. any explanations and descriptions will do for each interval. 2 hours looking at this question

physics!!! Damon?
The graph at the right is a positive vs. Time graph for the motion of an object moving along a horizontal (x) axis For each of the 8 1-second time intervals, describe the displacement, instantaneous velocity (+/- and whether the velocity is increasing or decreasing) and the ...

CONFUSED physics! description explanations
CHECK MY WORK ___ v a 1s 00 00 2s 17 10 v=(60-43) a =(v3-0)=10 3s 10 -17 4s 00 -2 5s -2 (2m-66) 6s (2m-68) -58 7s (10-2m) (2m -10) 8s 00 (10-2m) I got lost with the numbers. Could you please explain in words.. I am still lost. Hopefully I get a reply before 11 am so I can ...

physics! description explanations
Homework due by 12am midnight! Please help asap. Not sure how to explain or describe velocity or acceleration. Its confusing. Hope with help, there will be a clear understanding.

physics! description explanations
The graph at the right is a positive vs. Time graph for the motion of an object moving along a horizontal (x) axis For each of the 8 1-second time intervals, describe the displacement, instantaneous velocity (+/- and whether the velocity is increasing or decreasing) and the ...

english
Idk i really need the answer thou please help

english
in robert frosts poem birches the lines you many see their trunks arching in the woods years afterwords training their leaves on the ground like girls on hands and knees that throw their hair ue which two poetic devices?

Maths..
Uh...Yea... Sorry about this, but I"m trying to study and I need someone to walk me through, missed a lot of school. fyi, when there's a / its under the entire string before it until you hit the inequality symbol. Tony Bowled 135 and 145 in his first two games. Write ...

Maths
|a|-3/4=-5/8 a. 1/8 or -1/8 b. 7/8 or -7/8 c. 1 3/8 or -1 3/8 d. No solution could someone walk me through perhaps? I missed a ton of class.....So did Fae.

Math
A sport arena covers 710,430 square feet of ground. A newspaper reported that the arena covets about 700,000 square feet of ground. To what place value was the number rounded?

Algebra
A type of plant is introduced into an ecosystem and quickly begins to take over. A scientist counts the number of plants after m months and develops the equation p(m)=19.3(1.089) raised to m, to model the situation. Most recently, the scientist counted 138 plants. Assuming ...

Algebra
Calvin deposits $400 in a savings account that accrues 5% interest compounded monthly. After c years, Calvin has $658.80. Makayla deposits $300 in a different savings account that accrues 6% interest compounded quarterly. After m years, Makayla has $613.04. What is the ...

Algebra
An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is 10%. ...

Algebra
The general equation for depreciation is given by y = A(1 – r)t, where y = current value, A = original cost, r = rate of depreciation, and t = time, in years. A car was purchased 6 years ago for $25,000. If the annual depreciation rate is 11%, which equation can be used ...

Math Grade 5
The Eatery Restaurant has 200 tables. On a recent evening, there were reservations for 1/10 of the tables. How many tables were reserved?

Physics
A pilot flying low and slow drops a weight; it takes 2.8 s to hit the ground, during which it travels a horizontal distance of 100 m . Now the pilot does a run at the same height but twice the speed. How much time does it take the weight to hit the ground? How far does it ...

Math
14 2 7 3 9=10 insert symbols to make it work 9*2 11 8 4 1=60

Socials
Ok thank you! I just finished my essay, but I will take a look and maybe add some on to what I have now. I would post it here for you to proofread, but I don't wish to publish my work online.

Socials
How did the building of the transcontinental railway benefit the country? I know that First Nations were kicked off their farmland to make way for the building of the railway and for settlers(why would settlers need the land?). Why was the railway so important and does it some...

math
The length of a rectangle is 3 m more than double the width, and the area of the rectangle is 54 m^2. Find the dimensions of the rectangle.

accounting
rigoberto invests 8,000 at 6% interest, compound semiannually for 1 year

accounting
rose wants to have 7,500 in 18 years how much rose should invest now at 8% interest

chemistry
What volume of oxygen(in Liters) at 25 degrees C and 1.05 atm is needed to completely combust 2.65L of methane, measured at STP

Maths
How do you find the "average of the ends"? What does that mean and how do you get -1?

Maths
1. In the xy-coordinate plane, point A is the midpoint of the segment with endpoints (2,4) and (-4,-4). What is the distance from point A to the origin? I know how to find the distance between the two points- 10. But I don't know where to go from there. 2. The radius of ...

earthquake engineering
Actually I got the formula and found the answer. Now, I just need to know about the safety when ground's period is greater, equal and lower than the structure's period. Can we say that it is too dangerous if the periods are equal?

earthquake engineering
Thank you so much. I will check them out.

earthquake engineering
I cannot open the page through this link. Should I register or sth?

earthquake engineering
Hey everybody! I have a question I would like to share and ask you. We have a soil layer with medium gravel which has a depth of 38 m. We want to build a multi storey framed building safely with a fundamental period of 1.7 sec.Do you think it will be safe? Vs is given as 750 m...

chemistry
I think "a"

MATH
A carpenter has a board that is 10 feet long. He wants to make 6 table legs that are all the same length. What is the longest each leg can be? Thanks

research proposal
Hey I'm doing my research proposal for graduation I have 2 questions Q1. What should it inude exactly? I mean the headlines/ content) Q2. For the literature review, after dining articles what should I summarize/use from them? (Introducton, methodology or what!) Thanks alot!

History Help!!
are you home schooled

history
what ideas is about dividing government into legislative judicial and executive branches

Science
not save

Word Problem
The length and width of a rectangle are to each other as 4 is to 3. A second rectangle are 4 units longer and 2 units wider than the first one, and has twice as great an area as the first. Find the dimensions of the first rectangle.

Algebra
OMG thank you so much for the thoroughness

Algebra
1/x+1/x+5+1/3x=1/2.25 Solve for x.

Algebra
There are three pipes in which a cistern can be filled. The second takes 5 hours longer than the first, the third three times as long as the first. If all are open the cistern can be filled in 2 and 1/4 hours. How long would it take each alone to fill the cistern?

Math
can you provide a check for the answers?

Math
A monument consists of two cubical blocks of granite, the smaller resting on the larger. The total height of the monument is 5 feet, and the area of the exposed surface is 61 square feet. Find the dimensions of the blocks. Help please>.< Thank you in advance!

Math
thank you!

Math
How would you check it?

Math
A confectioner perchased several boxes of candy for $6. He gave five boxes to his children, and sold the rest at 10 cents more per box than he had paid for them, and made a profit of 25% on his original cost. How much did a box of candy cost him?

Simple Probability Question
A small manufacturing company has rated 80% of its employees as satisfactory and 20% as unsatisfactory . Personnel records show that 75% of the satisfactory workers had previous work experience in the job they are now doing, while 30% of the unsatisfactory workers had no work ...

Math
For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was 5 cents, and the number of reserved seats sold was 1/25 of the number of unreserved seats sold.If, at a second game, the price of the reserved seats is to be ...

Algebra
A passenger boat which travels 6 mph faster than a freighter required 3 days less time to make a trip of 2592 miles. Find the rate of the passenger boat.

Math
1-)A passenger boat which travels 6 mph faster than a freighter required 3 days less time to make a trip of 2592 miles. Find the rate of the passenger boat. 2-)For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was...

Help w/ Math PLS
If a, b, and c are three integers in geometric progression, prove that the number a^2+b^2+c^2 is exactly divisible by the number a+b+c.

Math
If a, b, and c are three integers in geometric progression, prove that the number a^2+b^2+c^2 is exactly divisible by the number a+b+c.

ALGEBRA
Thank you so much!

ALGEBRA
perimeter = 24 feet triangle that have one side is b =? second side is b =? third side is b - 3 =? How to solve this problem?

Math
Choose the most specific term that will make the following statement true. Do not assume anything more than the information given. I am a ____ because my opposite sides are congruent and parallel. square rectangle parallelogram rhombus

Tcc
What are the magnitudes of (a) the angular velocity, (b) the radial acceleration, and (c) the tangential acceleration of a spaceship taking a circular turn of radius 3220 km at a speed of 29000 km/h?

Math help!!!! Thanks in advance!!!!!!!!!!!
they actually are the answer choices so.. go get yo life boo

math
How many faces, edges, and vertices does the solid figure have? image

Math
Explain how you would convert a measurement given in ounces into pints

Math 3rd grade
2-Eric and Frank want to equally share 4/3 feet of rope. what length of rope should each friend get? Explain how to use a drawing to help solve the problem.

Science help.
number 1 is wrong its a fools

Physics
A mass M = 40.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as shown in the figure. If the string makes an angle theta = 21° with respect to the vertical, what is the acceleration a of the van? What is the ...

Physics
A cork gun contains a spring whose spring constant is 18.0 N/m. The spring is compressed by a distance ∆X = 6.0 cm and used to propel a cork of mass 7.66 g from the gun. Assuming the cork is released when the spring passes through its equilibrium position (Xeq), what is ...

Physics
A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 11.9 s and t = 16.9 s. The answer here...

Physics
A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 11.9 s and t = 16.9 s. The answer here...

Physics
A cork gun contains a spring whose spring constant is 18.0 N/m. The spring is compressed by a distance ∆X = 6.0 cm and used to propel a cork of mass 7.66 g from the gun. Assuming the cork is released when the spring passes through its equilibrium position (Xeq), what is ...

Nutrition
what are the principles of standing height and weight in the nutritional assessment? note: standing height and weight are from the anthropometric measurements i really need some help i couldn't find or understand what it actually wants so please some help.

statistics
How do you calculate the z-score for a package weighing 29.6 pounds ( round to 2 decimals)?

math
write the direct variation equation for the following:y varies directly with x and y=60 when x=10

math
If r = 12.5 and s = |−13|, which of the following inequalities is not true??? 1.r≠s 2.r< s 3.r≥s 4.r≤s

chemistry
the molar mass of NaOH is 40g/mol, how many grams ofNaOH are required to yield 0.65 mol?

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