Post a New Question

Posts by Sarah

Total # Posts: 5,819

math
75,74,72,69,65.What is the pattern.

Maths
Theo had two-thirds of a box of chocolates left. He and his two sisters share the chocolate equally.What fraction of the whole box does each of them have? If the box had 54 chocolates , how many chocolate dose each person eat?

oceanography
14C has a half-life of 5,730 years. If we start with 70 grams of 14C at time zero how many grams of14C will be left after three half-lives?_________

oceanography
One (1) kilogram of seawater (35‰) contains __ grams of dissolved salts and grams of water?

Calculus (AC)
Steve, you've been an amazing help. Thank you so much. This is the last question I need checked. Solve ∜82 using differentials. I got 3.00926

Calculus (answer check)
The measurement of the radius of a circle is 16 inches, with a possible error of .25 inches. (Use differentials to approximate the possible propagated error and the percent error. Propagated error= 1.6% Percent error= 4.6%

algebra
You are buying two kinds of notebooks for school. A three-ring notebook costs $6, and a spiral notebook costs $3. You must have at least five notebooks. The cost of the notebooks can be no more than $24. Which system of inequalities, along x>0 and y>0 would you use to ...

Math
In a basketball game, Albert made 11 out of 15 free throws and Jake made 10 out of 13 free throws. Who had the greater ratio of free throws attempted? Explain your reasoning.

physics
How many joules of energy are required to heat 2 L of water from 25 C to 100 C? I looked up that the specific heat is 4200 J/kgK and i keep getting Q to equal 630000 but my homework website says that's wrong.

Math
Mary bought a scarf for five dollar spent Half of the remaining money on jogging shoes bought lunch for two dollars and then spent half of her remaining dollars on a DVD she had $10 left how much money does she start with?

Math
Mary bought a scarf for five dollar spent one and a half of her remaining money on jogging shoes bought lunch for two dollars and then spent half of her remaining money on a DVD she had $10 left how much money does she start with?

maths
annie bakes some cupcakes for her children. If she gives each child 8 cupcakes,she will have 2 cupcakes left.If she gives each child 9 cupcakes, she will need another 2 cupcakes. How many children does annie have? 8-2= 6 6 divide 2= 3 9-2= 8 8 x 3= 24 24 children.

maths fraction
1/2 of the pupils in a class are girls. 3/8 of the girls and 1/4 of the boys wear spectacles. what fraction of the pupils wear spectacles? 3/8 + 1/4 = 3/8 + 2/8= 5/8

Math
I have a question Me and a friend are doing our math homework and ran into a conflict What would be the product of 8-1x0+2/2 I say it would be 5 and my friend here says it would be 1 I did 1x0=0 8+2=10 10/2=5 Thanks

chemistry
draw the skeletal structure line-angle (line-bond) mode of 2-isopropyltoluene. Identify the number of hydrogen atoms bound to each carbon in the structure.

History
The answer was B!

History
What was the original purpose of the Bill of Rights? A) to give the people their natural rights B) to restrict the power of the national government C) to restrict the power of the national and state governments D) to give power to the national government I believe the answer ...

American Government
The correct answer was B. :)

American Government
American foreign aid might be used to support which of the following foreign policy? A) Deterrence B) Containment C) Collective Security D) Isolationism My guess is B or possibly C? Definitely not A or D.

American Government
Yes, I completely agree. I notified my teacher about the questions error so hopefully it'll be fixed soon. However, until then, I thought I'd state was the correct answer was (even though it was technically wrong) for other students who may go to my school. :)

American Government
The correct answer was Senate.

American Government
Sadly, my teacher is absent until the 10th. Thank you for your help anyway. :) Hopefully someone whose completed this lesson before will be able to help.

American Government
Who counts the Electoral College vote? A) House of Representatives B) Senate C) State legislatures D) Supreme Court My textbook says "The president of the Senate opens the electoral votes from each State and counts them before a joint session of Congress." I assume ...

PROBABILITY MATH HELP!!!!! DICE
A die is rolled. Find the probability of the given event. The number showing is an even number; The probability is :

Sets & Probability math Help please
A group of people were asked if they had run a red light in the last year. 206 responded "yes", and 184 responded "no". Find the probability that if a person is chosen at random, they have run a red light in the last year.

PROBABILITY MATH HELP!!!!!
Is letter c a 3?

PROBABILITY MATH HELP!!!!!
A die is rolled. Find the probability of the given event. (a) The number showing is a 5; The probability is? (b) The number showing is an even number; The probability is ? (c) The number showing is greater than 5; The probability is?

Trig
Cosine theta=8/17 and 270 degrees is < theta, and theta is< 360

History
My answer is C

History
Based on Common sense and the crisis what conclusion can be made about Thomas Paine? A : Thomas Paine accepted blame for causing the war B: Thomas Paine believed that colonist should remain loyal to the king C : Thomas Paine used his writing to persuade and inspire others. D...

Physics
We have a charge q = -0.6 x 10^-6 C at origin. And a vector r = (4 m, 3 m, 0 m). Find the electric field E(r) as a vector expressed in terms of i j and k. What is the distance in this case? Magnitude of r? Also, how do I find the Electric field as a vector? I'm stuck..

math
how do I order these from least to greatest: 1/2, -0.75, 0.6, -1/2

Chemistry
Aqueous solutions of copper (II) sulfate, CuSO4, and potassium carbonate, K2CO3, a blue parcipitate of copper (II) carbonate forms in addition to one other compound. We have to write the balanced chemical equation for that but our teacher didn't teach us anything about that

Math , trigonometry
From a point on the ground 20m from the base of a tree the angle of the elevation to the top of the tree is 47 degrees. Calculate the height the of the tree correct to the nearest metre ???

bio
1. Complete the following conversions: 1ul= what mal I thought 1000 100ul = what ml 50ml = what ml ul=1.5 ul=0.06ml ul=0.003ml idk how to do this was not in lab

Math
Solve for x 4(log(x)+5)=6

Math
Solve for p 93=12(2)^p

chem
If you were asked to convert 25 cg to the unit hg, which of the following would be the first fraction used in the conversion? 1 hg/10^2 10^2/1hg 10^2 hg/ 1cg 10^-2 g/1 cg

calculus and chemistry
Thank you so much I realized I was missing the -5 at the end

calculus and chemistry
A container of hot liquid is placed in a freezer that is kept at a constant temperature of 10°F. The initial temperature of the liquid is 160°F. After 5 minutes, the liquid's temperature is 60°F. How much longer will it take for its temperature to decrease to ...

calculus
A container of hot liquid is placed in a freezer that is kept at a constant temperature of 10°F. The initial temperature of the liquid is 160°F. After 5 minutes, the liquid's temperature is 60°F. How much longer will it take for its temperature to decrease to ...

English
How do i correct this? She wants pink and gray curtains in her bedroom I believe blue and white would be prettier.

English
Is this correct? Carol couldn't start the car after leaving the football game. Fortunately, however, Roger came along and spotted the trouble quickly.

FRENCH
MERCI MmeJMcGin!

FRENCH (:
Did I word the wordings right and is #3 & #4 in its right simple future and is #5 is in its proper conditional form? I'd appreciate the help!

FRENCH
1. Quel travail voulez-vous? (What job do you want?) - Je veux être un pédiatre . 2. Quel type d'education avez-vous recu? (What kind of education have you received? - I got my M.D in med school and finished pediatric residency. J'ai obtenu mon M.D à...

American Government
Where can the strengths of the Articles of Confederation be seen in the Constitution? A) The constitution allows states the ability to control most of their own affairs. B) The constitution allows states the power to tax citizens. C) the constitution allows states the ability ...

algebra
How do you write 4.2 x 10 to the 5th power in standard form?

Algebra
Use the properties of exponents to simplify the following expression. Write the answer in scientific notation. (5.6x10^5) (9.9x10^-8) divided by (8.4x10^-4) (5x10^6) =28.9x10^-1 I added 5.6 9.9 8.4 5 5+-8+-4+6+ -1

Algebra
would my answer be 6,761,*10^6 or 6,761,*10^7 both saying its wrong

Algebra
Write the number in scientific notation. 6,761,000 I said it was 6,761,*10^3 Its saying its wrong?

Algebra
so the answer would be 630,*10^9? or 630,*10^8 becuase 6.2x 10^8 it is saying its wrong.

Algebra
If you are 20 years old,you have been alive for more than 630,000 seconds,write the last number in scientific notation? 630,000,000 I said it was 630,*10^7 idk how its wrong!

Algebra
(9x10^8)(3x10^3) what I did was 9 times 3 got 27x. Then did 8+3=11. Put it all together and got 27x10^11. Its saying it is wrong though

Algebra
A light year, the distance light travels in 1 year, is approximately 5.9×10^12 miles.A nearby galaxy is approximately 1.2×10^7 light years from our galaxy. Find the distance in miles between our galaxy and the nearby galaxy. IDK this question. I first thought you ...

Algebra
Write the following number in scientific notation. 0.157 I thought the answe was 0.157x10^3. it is wrong need help! No idea how its wrong

Algebra
Write the following number in scientific notation. 50,800 I thought the answer was 50.8x10^4 Need help

Homework
I will call you when I will get back from visiting my sister. will/get back/visiting find a incorrect answer? will is incorrect here?

Algebra
Steve I watched a example with one that had nothing in front. So it threw me off because I tried to follow that example and steps. Thank you for your help

Algebra
5-2 [5(-2)+4(2)/ -3(3)+3(-4)] my work : I did 5(-2) + 4(2) and -10 +8 then the bottom _9 (-12) = -2/-24 I need major help! Don't know what to do with 5-2 even.

Algebra
2^-1+4^-5 I thought 5/8 but its wrong. help please

Algebra
(2x^-2y^6)^4 / (4x^3y^-4)^2 = I got 16x^14/y^16 The computer is saying it's wrong and I don't get it. Even watched a video on similar problem. Help me!

Algebra
(x^-2)^3 (x^2)^4 on the bottom its x^15 I did this to get my answer (x)^-6 (x)^-8 /x^15 got x^-4 / x^15= x-14-(15)= -29 final answer is x^-29 IDK what I did wrong the computer saying its wrong! Help pleas

Math
The population of a town in 1920 was 3500 people. The town's population decreased linearly, and in 1927 the population was 3185. Find a formula for P, the town's population, in terms of t, the number of years since 1920.

Math
The following equation relates u and t. 3t=(1)/(7+u) Solve for u as an explicit function of t.

English
Is this sentence complete Swimming in the heated water of an indoor pool was a new experience for Elizabeth.

English
I think the answer is "Yes, I think that those big gas guzzlers are a threat to the ecology, don't you?" My friend thinks its without quotations Yes, I think that those big gas guzzlers are a threat to the ecology, don't you?

English
I think the answer is "Jackie, please see whether the postman has oh there he is now." But my friend thinks its this way "Jackie, please see whether the postman has, oh! There he is now."

Algebra
what is the perimeter of the figure if the length is 15/6in and bottom is 15/6 in what would it be. I thought you do 15+ 15+15+15 and divided by 4. you get 60/4 and then final answer would be 15

Algebra Word promblems
Alba Tross had an annual salary of $50,000. She received a 5 percent pay cut one year followed by a 5 percent pay raise the next. a. What is Alba’s final salary? Would it be 50,000 - 5% + 5% =49.875 b. What is Alba’s final salary less than her original salary? Not ...

Fractions
5+ 2/5 would the answer be 5/1+ 2/5 = 5/1 times 5/5 +2/5= 25/5 + 2/5 = 27/5

Fractions
would the answer be 32/3? Not sure

Fractions
4/3 divided by 1/8

Algebra
A family decides that they can spend 3/5 of their monthly income on house payments if their monthly income is $1,500 how much can they spend for house payments?

Fractions
would the answer be 42/40 but then simplify it to 21/20?

Fractions
Find the area of the triangle with base 7/8 and height 6/5

Fractions
3/4 times 4/3

Algebra
A family's monthly income is $1,500, and they spend $300 each month on food. Write the amount they spend on food as a fraction of their monthly income in lowest terms.

Fractions
would be answer be 6/1 times 7/2 = 6 times 7 on top and 1 times 2 on bottom = 42/2 divided both by 2 to get 21/ 1

Fractions
6 divided by 2/7

Algebra
A 12-acre piece of land is subdivided into 4/5 acre lots. How many lots are there?

Algebra
A 12-acre piece of land is subdivided into 45 acre lots. How many lots are there?

Fractions
2/3 times 5/7

Algebra
Reduce 134/34 to lowest terms.

Fractions
a bag of candy holds exactly 1/4 pound of candy. How many of these bags can be filled from 9 pounds of candy?

math
Home Center sells rectangular picture frames. The ratio of the length to the height in centimeters is 7:5. What would be the length of a frame that is 15 centimeters high?

calculus
If F(x) = f(xf(xf(x))), where f(1) = 4, f(4) = 6, f '(1) = 4, f '(4) = 5, and f '(6) = 6, find F '(1).

calculus
Determine the points in the interval (0, 2π) at which the graph of the function below has a horizontal tangent line. f(x) = 10 cos x + 5 sin 2x There should be three

calculus
The graphs of f and g are shown. Let h(x) = f(g(x)) and s(x) = g(f(x)). f(-1)= 4 f'(x)=1 g(-1)=5 g'(-1)=-1/2 f(8)= 6 f'(x)= 2 g(x)= 2 g'(x)=-1/2 (a) Find h'(−1). (b) Find s'(8).

calculus
94 is not right

calculus
If F(x) = f(xf(xf(x))), where f(1) = 4, f(4) = 6, f '(1) = 4, f '(4) = 5, and f '(6) = 6, find F '(1).

calculus
Find the vertical tangents of f(x)=10 cos x + 5 sin 2x

Math
The sum of the opposite of a number and the absolute value of the number is equal to the number itself.True,sometimes true,never true?

Math
The sum of the opposite of a number and the absolute value of the number is equal to the number itself. True,sometimes true,or never true?

Electricity and Magnetism
In a thundercloud there are two equal and opposite charges ±35C separated by 6km. Assuming that they can be treated as point charges, what is the magnitude of the electric force between them?

math
An ant starts at position (0, 0) and walks north, east, south or west, one unit at a time. How many di erent paths of length 8 units finish at (0, 0)?

PHYSICS
JOHN WANTS TO PADDLE HIS CANOE ACROSS A RIVER THAT IS 200M WIDE, HE STARTS FROM THE EAST SIDE. THE WATER CURRENT FLOWS NORTH-SOUTH AT 0.5MS^-1. IT TAKES JOHN 252S TO CROSS THE RIVER. 1. DRAW A DIAGRAM TO GRAPHICALLY REPRESENT THE VELOCTY VECTORS OF THE WATER CANOE AND THEIR ...

Algebra 1
1. 4f (5)+7 2. F(X)=2x-6 3. g(X)= x^2-x-x-9 4. h(x)=4-X

biology
Which organelle(s) are likely to be involved in the reduced efficiency of amino acid recycling in wimpys liver cells?

PHYSICS
A bucket containing cement has a mass of 3kg. One end of a rope is attached to the handle of the bucket and the other end is wound around a horizontally mounted cylinder on frictionless bearings. The mass of cylinder is 6kg and its radius is 0.10m. The moment of inertia of the...

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. 14
  17. 15
  18. Next>>

Post a New Question