Posts by Hannah

Total # Posts: 3,427

Math
Why can't 3x+2xy+8 be a linear system? Why Can't x^2+y^2=4 be a linear system?

Math
How is solving a rational equation different from solving linear equations like 3x+5=7x-2?

Math
How is solving a rational equation the same as solving any other equation?

Math
Which ordered pair is for the solution. y=3x-5 y=1/2x (6,3),(1,-2),(2,1),(-2,1)

Math
Which ordered pair is for the solution. y=3x-5 y=1/2x (6,3),(1,-2),(2,1),(-2,1)

Math
Patty went to her cousins for the weekend. She drove 260 km in 2 h 45 min, some of it on a 100 km/h highway and the rest on 80 km/h roads. This has to be written as a linear equation

Spelling
First goes Whirlwind, Breeze and then downpour and then what goes next?

Keyboarding and Applications
You are researching the Holocaust for a school paper and have located several Web sites for information. In three to five sentences, describe the method you would use to determine whether each Web site is a suitable source of information for your paper.

algebra
How is dividing by a monomial similar to factoring out the GCF?

math
Why is dividing by a monomial simpler than dividing by a binomial?

Math please help
The length of AB¯ is 5 units. What is the length of the image of the line segment after a dilation with a scale factor of 5/2?

algebra- can anyone help?
What is an “opposite” factor and how is it different than simply canceling?

Algebra HELP
Is there any difference between multiplying fractions and multiplying rational functions? What is it?

Algebra
How is a complex fraction related to dividing fractions?

College Chemistry
Please help I have no idea how to do this. There are three different dichloroethylenes (molecular formulaC2H2Cl2), which we can designate X, Y, and Z. Compound X has no dipole moment, but compound Z does. Compounds X and Z each combine with hydrogen to give the same product: ...

Chemistry
Please help I have no idea how to do this. There are three different dichloroethylenes (molecular formulaC2H2Cl2), which we can designate X, Y, and Z. Compound X has no dipole moment, but compound Z does. Compounds X and Z each combine with hydrogen to give the same product: ...

Algebra HELP
How is a fraction related to a rational expression?

Algebra HELP
I'm pretty sure. Here are the answer choices: A) Mean=11.86 Median= 12 Mode= 8 Range=14 B) Mean= 12 Median= 11.86 Mode= 14 Range= 8 C) Mean= 12 Median= 11.86 Mode=8 Range= 14 D) Mean 11.86 Median= 12 Mode=14 Range= 8

Algebra HELP
Find the mean,median, mode, and range. 10,8,12,6,5,4,10. This is what I got: Mode:10 Median:8 Mean: 7.9 Range: 8 However, none of these are the answer choices. Am I doing something wrong??

Physics
A force of -7500 N is used to stop a 2000kg car traveling 25m/s. What breaking distance is needed to bring the car to a halt?

algebra- can anyone help?
NO ANSWER CHOICES! HELP! Why should you have a box and whiskers plot on the same number line as another if you’re going to compare the graphs?

Algebra Help!!
Why should you have a box and whiskers plot on the same number line as another if you’re going to compare the graphs?

Algebra HELP
Thank you anyways!:)

Algebra HELP
Why should you have a box and whiskers plot on the same number line as another if you’re going to compare the graphs?

Algebra HELP
Ms.Sue can you help me with one more?

Algebra HELP
What does the interquartile range tell you?

Algebra HELP
Can you help me with another question?

Algebra HELP
How are the median and upper and lower quartiles the same? How are they different?

Algebra HELP
How are the median and upper and lower quartiles the same? How are they different?

Alegebra
The product of 2 amd is at least 10

Algebra
How can knowing the mean of a set of data help you find a missing data piece?

Chemistry
An impure sample containing an unknown amount of gallium bromide, GaBr3, weighs 0.379 g. It was dissolved in water and treated with silver nitrate, AgNO3, resulting in the precipitation of 0.263 g AgBr. Assuming that GaBr3 is the only source of gallium in the sample, use this ...

science URGENT!!
Like for the first one it would say west to east and then southern to northern

science URGENT!!
I have the diagram and it's very confusing....

science URGENT!!
I did and all i get is two different answers....

science URGENT!!
The diagram that was given was really confusing. I need help with the following questions: 1)Polar Easterlies in the Northern Hemisphere blow from? a.)west to east b.)east to west c.)north to south d.)south to north 2) Westerlies in the Northern Hemisphere blow from? a.)west ...

SCIENCE HELP
How long is a fish DNA?

Algebra HELP
What are the real and imaginary parts of the complex number: -6-i?

English HELP
In the pardoner's tale, what is ironic about the rioters discovery of gold in the place where they were looking for death? A) They do not realize that the gold actually belongs to Death B) It makes them realize that Death is not an actual person C) They realize that they ...

Algebra help!!
Give the equation of a square root function that is translated 4 units UP. Circle the part of the equation that makes the translation.

Math
46<-6a+4

math
no thanks

math
i need the answer

math
put these decimals in order from least to greatest 7.0, 0.07, 0.7, 0.077

math
choose all the expressions with a sum greater than 10. 5.3 + 4.99? 6.12 + 3.09 2.08 + 7.9 4.8 + 5.9 3.46 + 6.009

math
choose all the expressions with a different less than 5. 8.3 - 4.07 9.33 - 3.99 7.1 - 2.603 12.3 - 7.08 7.005 - 2.005

math
today, the city of madison has a population of 6.34 million residents. in 1914, the population was just 1.0 million residents. how much has the population increased since 1914

math
find the difference. 2.004 - 1.34 = ? find the sum. 7+9.26+10.1 =?

History plz help
Why did settlers find land grants so appealing??

History
which conclusion is best supported by the fact that the United States did not enter World War II until 1942 a. US leaders did not believe that the events of the war justified involvement until 1942 b. Germany had not been involved in the World War II until 1942 c. no other ...

socail studies
thx

socail studies
I just need a little help no quiz I would never cheat.

socail studies
What does porcelain mean and how did it affect Europe???(I cant have the same answer as silk cloh)

Macroeconomics
If you move from one increment as a starting point to the next (decrease in units of your good in your demand schedule or graph what is that move called?

Geometry
A triangle has side lengths of 4, 5, and 6. Which of the following correctly classifies this triangle. Acute, Right, Obtuse, Isosceles.

Math
|3-7x|=-6 6w-1/5 -3w=12w-16/15 (X-3)^2-3=-5 (X+3)^2+4(x+3)-5=0

government
newspapers are still the media source that provides the most americans with political information True or false ? I think it is false???

Clinical Calculations
Suppose that the adult dosage for a given medication is 150 milligrams? (mg) per day for every 9 kilograms? (kg) of body weight. ?a) At this rate find the daily dose for a man who weighs 117 kg. ?b) If the man is to receive 500 mg of this medication every 8? hours, is he ...

Math
The ratio of the blue markers to red markers is 3:7. If there are 40 total markers in the bucket,how many of the markers will be blue

College Question?
What are the best colleges offering a Bachelor's degree in Political Correctness?

Math
Arthur and Tariq are planning to build a kit car. They are also having a new garage built for the car. They have a scale drawing of their car and a scale drawing of the garage. Will the car fit the garage if the cars scale is 1cm:50cm and the garages 1cm:80cm ?

Math checm my answer
Katrina lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Katrina’s home and the football field at the exact point where an altitude to the right triangle formed by her home, the park, and the ...

calculus review please help!
I have solved the first one! I'm still confused about the second and third :(

calculus review please help!
Write the integral in one variable to find the volume of the solid obtained by rotating the first?quadrant region bounded by y = 0.5x2 and y = x about the line x = 5. Use the mid-point rule with n = 4 to approximate the area of the region bounded by y = -x^3 and y = -x. A ...

Algebra
3(x-y) X(y-3)

MATH
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MATH
Calculate the area of the composite figure, which is not drawn to scale. {the link above is a picture of the shape}

Physics
a ball is thrown upwards from a tower standing 300 feet tall. the initial velocity of the ball is 32 feet/second. the negative acceleration of the ball due to gravity is -16 in terms of feet per second squared. What is the velocity of the ball after 1 second?

calculus help please!
oops I meant (t+4)/(t+2)

calculus help please!
I can ask my teacher! how would we do it if it was actually just (t-4)/(t+2)?

calculus help please!
I have no idea how to do this problem the only thing I know is that it will equal the definite integral from [0,5] of F(t)-E(t)dt

calculus help please!
Water is poured into a bucket according to the rate F(t)=(t+7)/(t+2) , and at the same time empties out through a hole in the bottom at the rate E(t)=(ln(t+4))/t+2 , with both F(t) and E(t) measured in pints per minute. How much water, to the nearest pint, is in the bucket at ...

World History
Are there similarities between islam holy book, judaism holy book, and christianity holy book

calculus please help!!
i know this question has something to do with semicircles and radians. I got the starred answer as my own but I'm not sure if it's correct or how I got there. Help thanks!!

calculus please help!!
Find the range of the function F(x)= definite integral from [-6,x] of sqrt(36-t^2)dt. [0, 36?] [0, 18?]*** [-6, 6] [-6, 0]

Chemistry
How would I balance the following redox equation? I know the Charge on the Br is 5, but i am comfused on where to go from there. H20 + Br^- + Al^3+ -> Al + BrO3^- + H^+ Thank you so much in advance

Trig
cotxcosx/csc^2x-1 Please help me verify

Trig
Please help using identities (2tan30)/(1-tan^2 30)

Trig
Please help me to simplify using identities 1+tan^2x/tan^2x I don't really understand how to do please help

Physical Science
If you know the rate of movement along a fault, the amount of offset over a period of time can be calculated. The basic relationship is Rate = distance/time Movement along the San Andreas Fault is about 3.5 cm/yr. If a fence were built across the fault in 2005, how far apart ...

Physical Science
If the mid-Atlantic Ocean is spreading at 2.4 cm per year, how many years has it taken for it to reach its present width of about 5000 km?

math
Marla has $95.50 in her savings account. She deposits $5 every week. Her mother also deposits $20 into the account every time Marla washes the car. Her savings account balance can be shown with the following expression: 20c + 5w + 95.50 Part A: Identify a coefficient, a ...

Precal
2sin^2(2/A)+cosA=1 Please help me verify using identities

Math
If there are 12 green pencils, 4 red pencils, 7 blue pencils, and 2 black pencils, what is the chance of picking a red pencil at random?

chemISTRY
A hot lump of 33.2 g of copper at an initial temperature of 70.5 °C is placed in 50.0 mL of H2O initially at 25.0 °C and allowed to reach thermal equilibrium. What is the final temperature of the copper and water given that the specific heat of copper is 0.385 J/(g&...

Math
gh

Chemistry 2202
Henry uses 0.150L of 0.500 mol/L NaOH to neutralize 250.0 mL of the hydrochloric acid. What is the concentration of the HCl (aq)?

Social studies
Please does anyone have the answers I need help with this

chemISTRY
What is the rms speed of N2 molecules at 281 K? What is the rms speed of He atoms at 281 K? where R=8.314

CHEMISTRY
If He(g) has an average kinetic energy of 4190 J/mol under certain conditions, what is the root mean square speed of Cl2(g) molecules under the same conditions?

chemISTRY
Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through identical membranes simultaneously. After a certain amount of time, it was found that 5.36 mL of O2 had passed through the membrane, but only 3.60 mL of of the unknown gas had ...

Physical Science
Find the hydroxide-ion concentration in an aqueous solution when the hydronium-ion concentration is 1×10^?10M. Recall that 10^a×10^b=10^(a+b). Express your answer to one significant figure and include the appropriate units.

Physical Science
Find a hydroxide-ion concentration in an aqueous solution having a pH of 2. Express your answer using one significant figures. I thought the answer was 1*10^-2, but I have no clue what I am doing wrong.

Math
Ann started reading at 4:00 PM and finished at 4:20 PM through what fraction of a circle did the minute hand turn

Physics
A block of ice of mass 30 kg is at rest atop an inclined plane of vertical height 2 m. It is released and slides down the inclined plane. What is its speed at the bottom of the inclined plane?

Math
Georgia has 5 yards of ribbon. She needs 1/3 yard to make one bow. How many bows can Georgia make?

HISTORY (Korean War)
Was the Korean War a result from existing economic and political struggles? Could it have been a proxy war that involved World powers? Ideas on how I could answer this question would be helpful. Thanks!

CHEMISTRY
Determine the concentrations of Na2CO3, Na , and CO32– in a solution prepared by dissolving 2.22 × 10–4 g Na2CO3 in 2.25 L of water. Express all three concentrations in molarity. Additionally, express the concentrations of the ionic species in parts per million...

Math
Kenny will invest $16,000 in an account with an annual interest rate of 5% and the interest is compounded quarterly. How much money will be in the account in 7 years? How will I set this up?

Math
Dave uses 500 milliliters of juice for a punch recipe. He mixes it with two liters of ginger ale. How many milliliters of punch does he make?

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