# Posts by mari

Total # Posts: 140

**CHEMESTRY**

A 265 ML ROUND-BOTTOMED FLASK CONTAINING 0.650G OF A GAS WAS COLLECTED AT A TEMPERATURE OF 25.0 CELECIUS AND 735 TORR PRESURE.CALCULATE THE MOLAR MASS OF THIS GAS

**Algebra 1**

32.) What is the slope for the line that passes through a pair of points? (-4,4), (3,2) -2/5 -2/7 6/7 -1/7 Still stuck on this question -_-

**Algebra**

What is the simplified form of the expression 8[60÷(4^2-2^2)-2] I am so tired of looking at this equation I want to cry I keep getting different answers that aren't it I'm so frustrated a.)24 b.)30 c.)72 d.)104

**Algebra**

Forget it haha I figured it out on my own The coefficient is low so slim chance my prediction will be close

**Algebra**

You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.015. How confident can you be that your predicted value will be responsibly close to the actual value?

**Algebra**

Yikes!

**Algebra**

What is an estimate of the solution of the equation 6n+3=2? Use a table I don't know how to get the answer :(

**Algebra**

Which ordered pair is a solution of the equation y=x-3? (-2,5) (-5,2) (2,5) (5,2) I keep getting other answers :(

**English**

Okay...

**English**

I have to explain why I agree or disagree and "why i think this is" in an essay I already know what I want to say but I don't know how to start off and add in the "why I think" part And I'm not sure how I should end it This question is worth 1 point...

**Algebra**

Why do students have to pass an algebra course in order to graduate highschool?

**Algebra**

Most states require students to pass an algebra course in order to graduate high school. Why do you think this is? Explain why you agree or disagree with this requirement I just want to read other people's answers

**Math**

Can u please help me with all the answers to the final LEAP exam for 6th grade

**Math (Real Analysis)**

Prove if f(p) = 0 where abs(f) is continuous at p, then f is continuous at p. Note: we have only learned continuity, discontinuty, and epsilon-delta proofs (no limits)!

**Math**

an average ant is 1-4 inch long .a picnic blanket is 84 inches how many ants long is the picnic blanket

**Math**

Thanks so much Jackaboy

**Algebra**

Anon is right

**Algebra**

....

**math**

5*15=75

**math**

41 hours and nine minutes times 31 days what's my answer per day how many hours do I work

**physics**

'Melvin lifts a 28.9 kg bucket from a well and does 3.41 kJ of work. how deep is te well'

**chemistry**

a solution consisting of 1.6M NaNO3 and 1.0M of Na(NO3)2 please help

**math**

from a boat, the angle of elevation of the foot of a lighthouse on the edge of a cliff is 34 degrees. if the cliff is 150m high, how far from the base of the cliff is the boat

**math**

GCF of each pair of polynomials 27 y3z and 45 x2y

**Math**

From 1990 to 2006, the population, p (in millions), of a large city can be modeled by p = 1.1(1.05)t, where t is the number of years since 1990.

**Algebra**

Pytheorem Quadratic Help me solve this problem x^2(2x+6)(2x+4)

**Algebra**

Please help me find the GCF of these two expressions 20x^5u^7 and 28x^3v^2u^4

**Algebra**

Please check and see if my answer are correct 1). 24v^2w^5x^8-20v^7w^9= -4v^2w^5(5v^5w^4-6x^8) 2). 81-25z^2= (5z+9)(9-5z) 3). 5y^3-7y^2-15y+21=(y^2-3)(5y-7) 4). x^2+4x-12= (x+6)(x-2) 5). 3x^2-26x+16= (x-8)(3x-2) 6).4v^6+6v^5-18v^4= 2v^4(2v-3)(v+3) 7). solve for y y^2+6y+8=0 y...

**Algebra**

What is the GCF of these two expressions? 30w^4v^8 and 24y^3w^6v^2 Please help me figure this out

**Algebra**

Ok Thank you

**Algebra**

Help me with these two equations Solve for v 2v^2+4v-14=(v+1)^2 solve for y y^2+6y+8=0

**Algebra**

Need help!! Please help me figure this out What is the length of 7ft more than twice the width and an area of the rectangle is 99ft^2. Find the dimension?

**Algebra**

What is the GCF of these two expressions 30w^4v^8 and 24y^3w^6v^2

**Algebra**

How do I factor this, Please help me.9w-w^3

**Algebra**

Sorry Damon, I thought I was overlooked..I appreciate the help Thank you!!!

**Algebra**

How do I factor this, Please help me.9w-w^3

**Math**

thank you so much !!

**Math**

there are 2 sin(alpha+beta)=(sin alpha)(cos beta)+(cos alpha)(sin beta) cos(alpha+beta)=(sis alpha)(cos beta)+(sin alpha)(sin beta) these identities to derive i)sin(alpha-theta) ii)cos(alpha-theta) iii)sin2theta I just want one of them solved in steps to be able to implement ...

**Math**

Nope, assuming I want to prove cos2theta is cos 2theta =1-2sin^2theta cos2theta=(1-sin^2theta)-sin^2theta cos2theta=1-2sin^2theta

**Math**

using sin(alpha-beta)=(sin alpha)(cos beta)-(cos alpha)(sin beta) use the identity to derive the result proof for : sin(alpha-beta) PLEASE PLEASE PLEASE HELP

**Math**

Write a formula expressing the information: i)Rose paid twice as much as Mike I used R for Rose and M for Mike The formula I cam up with is R=2M ii)Taxes are 6 percent of income [Use T and x] So I wrote it like this T(0.06)/X iii)There are twenty times as many students as ...

**PreCalculus**

A wire is 200 inches long is cut into three pieces, two of equal length, each twice as long as the third. How long is the third piece?

**american history**

Which of the following statements about the Southern planter's world is most accurate? A. Most great planters of the Old South were self-made men. B. The stereotype of the "southern belle" is fairly accurate. C. The wives and daughter of plantation owners lived ...

**Chemistry**

What is the density of carbon dioxide gas at 25 C and 779 mmHg?

**Math**

Evaluate 3X /4 if X=2

**math**

describe a situation in which you might use each calculation a)9/8 divided by 2/3 b)1 and 2/3 divided by 2 and 2/3

**Language**

What impact do ignorance and stigma have on people who are HIV-positive in Malawi and other African countries? It'll b much helpful if you don't give links Thank u :)

**History**

how have the metis retain their culture in modern canada

**Math**

Explain how to calculate 1/4 divided by 1/8 using reciprocal fractions

**Math**

Explain why 0.4 divided by 0.2 has the same answer as 4 divided by 2. (Hint: Convert the decimals into fractions with a denominator of 10.)

**History**

I need help on a few questions.. Full sentences would be nice. 1. When was Rupert's Land given to Prince Rupert? 2.What areas of land does Rupert's land cover? 3.What is called Rupert's Land now?

**Science- help asap plz**

Thanks :)

**Science- help asap plz**

think about the role that trees play in the water cycle. what are two of the ways in which they are part of the cycle?

**Science- still waiting**

My teacher wants different examples than that.. I don't know what other examples to write

**Science- still waiting**

Give 2 examples for each state of fresh water: a) solid b)liquid c) vapour?

**Science**

Give 2 examples for each state of fresh water: a) solid b)liquid c) vapour?

**scince**

As you drive down the highway you may see crows feeding on dead animals. As a result of this nutritional pattern,crows may be classified as

**Calculus (Math)**

Integral of (cot4x)^5 (csc4x)^7

**writing and linear equations**

the measure of one angle is described as twelve more than four times a number. its supplement is twice as large. find the measure of each angle.

**math**

I have a pizza that measures 36 by 21 that needs to cut into equal pieces with no left overs. What is the length of longest side?

**6th grade math**

In the cafetería , 100 milk cartons were put out for breakfast. At the end of breakfast, 27 remained.

**6th grade math**

At the 6th grade school dance, there are 132 boys, 89 girls, and 14 adults.

**chem**

Consider two identical iron nails: One nail is heated to 95 °C, the other is cooled to 15 °C. The two nails are placed in a coffee cup calorimeter and the system is allowed to come to thermal equilibrium. What is the final temperature of the two nails?

**Statistics**

Step 2 - Transform the sample mean into a z-score (p. 133) x̅ = 26, N = 30, σ_X=6 Z = (X- µ)/(σ_X/√N) = (24- 26)/(6/5.4772) = (-2)/(1.0955) = 1.8257 Z = - 1.83 The z-score table notes that the area between the mean of 26 and the z-score of 1.83 = ....

**Statistics**

Darned old Foofy! Foofy computes the x̅ (MEAN) from data that her professor says is a random sample from population Q. she correctly computes that this mean has a z-score of +41 on the sampling distribution for population Q. Foofy claims she has proven that this could not...

**Chemistry**

under the same conditions of temperature and pressure , does hydrogen iodide and ammonia diffuse faster? calculate the ratio of the velocities

**math**

An arithmetic sequence is represented in the following table. Enter the missing term of the sequence. 10,-2,-14,-26,?...

**physics**

hi does someone answer you with your question?

**Math**

If a 6 meter pole and a 3 meter pole are connected by wires from the top to bottom, how tall is the pole touching the intersecting wires?

**Math 209**

THE FEDERAL DEBT D IN TRILLIONS OF DOLLARS HELD BY FOREIGN AND INTERNATIONAL INVESTORS x YEARS AFTER 1970 CAN BE MODELED BY D(x) = WHERE 15 ≤x≤ 40.

**Chemistry**

The half-life of C-14 is 5700 years. If it took seven half lives for a sample of C-14 to decay completely, how many years would have gone by?

**Economics**

Owners of digital cameras have to buy memory cards in order to use the cameras. Cameras and memory cards are: A. substitutes. B. complements C. unrelated. D. elastic.

**chemistry**

how many silver coins weighing 26g each would take to provide 5 moles of silver

**math**

Can (-x – y) (x + y) be multiplied by using the difference-of-squares formula? Explain why or why not

**health**

and well GOOOO Ashworth

**health**

torin i aggre and hey this is fun

**Economics**

rent

**calculus**

verify that y=c/x^2 is a general solution of the differential equation y'+(2/x) y=0-6y=0 then find a particular solution of the differential equation that satisfies the side condition y(1)=2

**calculus**

the management of a company has decided that the level of its investment should not exceed C dollars. Furthermore, managament has decided that the rate of net investment (the rate of change of the total capital invested) should be proportional to the difference between C and ...

**calculus**

verify that y=C1e^2x + C2e^-3 is a solution of the differential equation y''+y'-6y=0

**I really need help..(Algebra)**

Solve the equation. Show your work. 3m^2=-6m

**algebra**

What? Retype the equation.

**algebra**

What do you want to do with that?

**Algebra; HELP PLEASE!**

Solve the equation. Show your work. 3m^2=-6m

**Math; PLEASE HELP**

Thank you.

**Math; PLEASE HELP**

Solve for x. Provide an explanation, please. -X^2+36=0

**5th Grade Math**

2/3-7/12

**trig**

refer to right triangle ABC with C = 90degrees. Given a= 2 and b=√5 Find the six trigonometric functions of A. and find the angles A and B

**calculus**

Given a right circular cone, you put an upside-down cone inside it so that its vertex is at the center of the base of the larger cone, and its base is parallel to the base of the larger cone. If you choose the upside-down cone to have the largest possible volume, what fraction...

**Math, help needed**

Kate bought 3 CDs and 1 DVD at a store. Her friend Joel bought 2 CDs and 2 DVDs. If Kate spent $20 and Joel spent $22, determine the cost of a CD and DVD. ~Please provide an explanation as well. Please and thanks!

**Math.**

Kate bought 3 CDs and 1 DVD at a store. Her friend Joel bought 2 CDs and 2 DVDs. If Kate spent $20 and Joel spent $22, determine the cost of a CD and DVD. ~Please provide an explanation as well. Please and thanks!

**Algebra**

Thank you, that helped lot. :3

**Algebra**

Last month, Stacie spent $57 on 4 allergy shots and 1 office visit. This month she spent $9 after 1 office visit and a refund for 2 allergy shots from her insurance company. How much does an office visit cost? An allergy shot?

**trig**

Find theta such as tan(theta) = cot(theta+45). Thanks

**science**

Ok I do it 80×8=640

**science**

Do I ×8 andthe80

**science**

Which object is it

**science**

What do you mean ok the Bucket has 256 fluid ounces the Punch Bowl has 240 fluid ounces and Fish Tank has 640 fluid ounces and last the Sink has 512 fluid ounces

**science**

What object has a capacity of exactly 80 cups. 1.Bucket 2.Punch Bowl 3.Fish Tank 4.Sink