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Posts by tina

Total # Posts: 1,230

Math
I got 0/0 for my answer, is that right?

Math
Determine the limit below (if it exists) Problem: lim 8x^2+40x+32/x+4 x→-4

Chemistry help
How many moles of Fe3O4 are required to supply enough iron to prepare 0.752 mol Fe2O3?

Chemistry problem
How many moles of UF6 would have to be decomposed to provide enough fluorine to prepare 2.14 mol of CF4? I'm not sure how to solve this problem? So far all I did is calculate the moles of F in CF4, which is 8.56 moles

math
Solve by substitution.. y=4x-7 and 2x-3y=6 This is the only question i am stuck on, please help..

math
Alvins mother wants to buy snacks for the soccer team, there are 10 juice boxes in a pack and 8 oatmeal bars in a pack,how many packs i f each does she need to buy to get the same amount of juice boxes and oatmeal bars

math
As you said, that you can't solve a linear equation, that's what it says in the textbook.. also I've checked the back of the book and it says the coordinates are (-1,3). Sorry for the bother.

math
solve each linear equation.. y=x+4 y=-2x+1 I just need help on one of them.

math
Hank sells furniture and earns $280/week plus 4% commission. a) Determine the sales that Hank needs to make to meet his weekly budget requirement of $900. b) Write an equation for this situation, and use it to verify your answer for part. Let x represent earnings and y ...

Physics
A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 2.0 m/s, skates by with the puck. After 1.00 s, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 0.20 m/s2, determine each...

Science - physics
a jet airplane lands with a speed of 122 m/s and can accelerate uniformly at a max rate of - 6.2m/s2 as it comes to a rest. can this airplane land in 1.0 km runway

computer(internet)
in my computer all sites are available but facebook site is not available when i tries to open facebook "this webpage is not available"comes i have window xp and i use modem for internet connection plzzzzzzzzz help me?????????????????????????

science
cite samples of lesson plan for elementary students

Ecology
I am having trouble with the global patterns of atmospheric heating and circulation. I don't completely understand.

math
A certain alloy contains 5.25% copper. How much copper is there in a piece weighing 200 pounds. A.1.05 pounds B.105 pounds C.10.5 pounds D.1050 pounds Would it be C 10.5 pounds

math
would the answer be A

math
Theresa worked 9 hours on Monday and 7 on Wednesday. Her total pay was $116.00. What is her rate per hour. A.$7.25 B.$12.89 C.$8.29 D.$16.57 How do I go about finding the answer

math
Change the fraction 3/4 to a percent. A.34% B.63% C.75% D.113% is the answer A

math
If a car travels 340 miles on 20 gallons of gas, how far can it travel on 25 gallons of gas? A.255 B.272 C.425 D.500 would the answer be C

math
33 1/3 %

math
If Joel earns $1,500 per month. If he spends $375 on rent each month, what percent of his income does he spend on rent? Is it 40%

math
Which one of the following statements expresses a true proportion? A.2:3 = 3:2 B.14:6 = 28:18 C.3:5 = 12:20 D.42:7 = 6:2

math
If you're currently making $6.75 per hour and you're offered a new job that pays $7.47 per hour, how much more would you make per hour at the new job? A.$.28 B.$.72 C.$1.28 D.$1.72

math
In the equation x/35=7, what is the value of x? A.7 B.5 C.35 D.245

math
A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax? A.400 square feet B.40 Square feet C.800 Square feet D.80 Square feet

Math
There are 75 envelopes in a package. How many envelopes are in 7 packages? A.552 B.10r5 C.525 D.625

Math
Solve the following : 32 divided by 4 +4x8= A.96 B.32 C.42 D.40

math
During a paint sale, a hardware store sold 33 gallon of paint and 57 gallons of high- gloss paint. What is the ratio of gallons of high-gloss sold to the total gallons sold? A. 33:57 B. 33:90 C. 57:33 D. 57:90

math
change 34.55% to a decimal.

math
Firewood is often sold by the cord. A cord of wood is a bundle measuring 4 feet by 4 feet by 8 feet. What is the volume of a cord of wood in cubic feet?

math
How much money will there be in an account at the end of 8yrs if $5000 is deposited at 7% interest compounded semi annually?

math
Completely factor the expression 16t3 − 50t2 + 36t. A. 2t(8t − 9)(t − 2) B. Prime C. 2t(8t + 9)(t + 2) D. 2t(8t − 25t + 18)   Completely factor the expression...

Math
Find location of the center, vertices, and foci. (x+4)^2/36-(y-1)^2/25=1 This is an equation of a hyperbola with horizontal transverse axis. Its standard form of equation:%28x-h%29%5E2%2Fa%5E2-%28y-k%29%5E2%2Fb%5E2=1, (h,k)=(x,y) coordinates of center For given hyperbola: ...

math
an artist intends to paint a 60-square-foot mural on a large wall. find the dimensions of the mural if the artist leaves a border of uniform width around it.

computer
ok thank you for helping

computer
2. The website for Long Island University provides online A. style guides. B. bibliography generators. C. print and ebooks that include citation and documentation guides. D. resources that are a popular means of disseminating information. 5. Penn Foster's Academic ...

computer
ok thank you

computer
17. Which of the following sources likely has the most reliable information? A. A graduate student's blog that was updated ten months ago B. A company-sponsored website with detailed citations C. A computer science textbook written by an expert in the field in the early ...

Physics for Physical science
A picture frame hung against a wall is suspended by two wires attached to its upper corners. If the two wires make the same angle with the vertical. (Draw a free body diagram)

chemistry
A compound has 85 % tin and 15% antimony. How many grams of antimony will be in 50. grams of the compound. My question is do I need to calculate the empirical formula first to do thi? I'm not sure where to start.

Math
Find the cost of shingles for the gable roof roof below if one bundle covers approximately 33ft2 and costs $29.95.The top is both ways is 12.7 meters and down is 7.5 meters . Thanks

Math
A flagpole is 5.4 meters high . Express this height in feet and inches.

Math
A plane has a height of 1000 m You see the plane at an angle of 40 degrees with the ground . How far away is the plane from where you are standing. Thank you

Please Help me with a Finance - Loan problem
using the 170,000 instead of 17,00 came up with 3073.23 which is correct.

Please Help me with a Finance - Loan problem
I am reworking the problem .. I see one of my problems .. 17,000 is supposed to be 170,000. Re working problem with correct numbers now

Please Help me with a Finance - Loan problem
A company borrows $170000, which will be paid back to the lender in one payment at the end of 5 years. The company agrees to pay monthly interest payments at the nominal annual rate of 7% compounded monthly. At the same time the company sets up a sinking fund in order to repay...

Finance - Loans problem please help
A company borrows $170000, which will be paid back to the lender in one payment at the end of 5 years. The company agrees to pay monthly interest payments at the nominal annual rate of 7% compounded monthly. At the same time the company sets up a sinking fund in order to repay...

Civics to Ms.Sue
B is NOT correct.

Physics
A diver running 1.8 m/s dives out horizontally from the edge of the cliff and 3 s later he reaches the water below. (a) Calculate the resultant velocity (with direction) of the diver just before he hits the water. (10) (b) How high is the cliff, and how far from its base did ...

statistics - can someone please Help me
Thank you so much

statistics - can someone please Help me
I have tried for days to figure out how to work this problem. Please help show me how to find the answer. A particular radioactive isotope decays from 210 mg to 182.7 mg in 15 days. Find the half life of the isotope. I can not find any problem that is similar. everything i ...

Math
Yes it is

statistics
I have tried for days to figure out how to work this problem. Please help show me how to find the answer. A particular radioactive isotope decays from 210 mg to 182.7 mg in 15 days. Find the half life of the isotope.

Math
Mike was voted Most Valuable Player for 2 out of 5 seasons. What is the probability that Mike will be Most Valuable Player this year? I thought the answer would be 40%, but I'm not sure. I wasn't sure how to include this year in with the past 5 years or even if I ...

Math
Mike was voted MVP for 2 out of the past 5 seasons. What is the probability that he will be MVP this year? Thank you!

Math
Predict how many times a six sided die will land on the six if you roll it 24 times? Thank you!

math
maybe 116,375

Mathematics
An isosceles triangles, such that the vertical angle is 4times the size of the base angle.what is the size of the base angle with illustration

algebra
the sum of 2 numbers is 36. the first number is twice the second number. what is the 2nd number?

statistics
Below are 36 sorted ages of an acting award winner. Find P90 converting a percentile to a data value. 16 20 27 25 25 27 31 37 39 42 43 44 45 48 50 21 52 59 62 62 64 65 66 66 68 68 70 73 74 74 74 78 79. P90=

anthrpology
Look at the Yanomami of the Brazilian Rain Forest, the Amish of Pennsylvania, U.S., Itnegs of Abra, Philippines, and the Hopi of Northern Arizona, U.S. Describe similarities and differences found in their funeral practices for their deceased.

algebra
2. Jamar and Scout are having a candle wax drinking competition! Jamar has already downed 14 oz. of candle wax and can drink it at a rate of 3 oz. of candle wax per minute and Scott has only downed 8 ox. of candle wax so far but can drink it at the faster rate of 5 oz. per ...

English
Is the following sentence correct? if if the pronoun is incorrect underline the pronoun error and write the correct pronoun. In the morning, my brother Kele is usually more alert than me.

Math
companywide we have to take a 30% paycut deferment. here This is what I've been taking home. What will 30% look like? gross-720.00 net- 559.41

social studies 8th
all others correct? @reed

social studies 8th
1. What was an underlying source of tension in westward expansion during the 1850s? (1 point) the inflation of goods a sharp decrease in population whether newly added territories should allow slavery **** disagreement over whether the economy of new territories be based on ...

Art
I THINK C, but i'm not sure.

Science
How are Newton’s second and third laws of motion important to your everyday life?

SOCIAL STDIES HELP!
nvm got 10/10 thank you(:

SOCIAL STDIES HELP!
4. A, C ? @MS. SUE TYSM

SOCIAL STDIES HELP!
1.A,C 2.B,C,D 4.A,D @MS.SUE Are they correct now? Thank you so much

SOCIAL STDIES HELP!
1. How were the North and South different during this period? (Choose all that apply.) (2 points) The North was more urban, while the South was more rural.*** The South was more urban, while the North was more rural. Northern states were mostly free states; Southern states ...

LA
I'm sorry :(

LA
its c i took the test (:

Physics
A(n) 57.3 kg astronaut becomes separated from the shuttle, while on a space walk. She finds herself 54.3 m away from the shuttle and moving with zero speed relative to the shuttle. She has a(n) 0.697 kg camera in her hand and decides to get back to the shuttle by throwing the ...

algebra 2
A nurse must careful not to inject a drug too quickly into a patient's IV. If the drug is injected at maximum rate of 0.04cc per second, and the total amount to be injected is 25cc. create an equation that tells the amount injected as a function of time in seconds. ...

Math - Trigonometry
You are riding the ferris wheel at the Montgomery County Fair. The wheel has a diameter of 36 feet and travels at a constant rate of 3 revolutions per minute. A car at its lowest is 4 feet above the ground. Write a sine function to describe the relationship between time and ...

LANGUAGE ARTS !! 8TH GRADE
2. B 3. B 4. A 5. D Are my answer right @Ms. Sue

LANGUAGE ARTS !! 8TH GRADE
2. Read the following lines of dialogue spoken by Dr. Warren and Johnny in Chapter VI. “My boy,” came the doctor’s gentle voice, “Let me see your hand.” Johnny did not face him. He said nothing.“You don’t want me to look at it?” As long ...

Langague Arts 8th Grade
3. What does Johnny’s mastery of riding Goblin show about his character? (1 point) He is rash and quick-tempered. He is brave and determined. He is immature and selfish. He is arrogant and proud. 4. Which of the following statements most accurately reflects the political ...

monroe
Explain how you would use Excel to analyze this data and organize it to prepare a written repor

math
A piece of plywood 24 inches wide is cut into strips 2 1/2 inches wide. How many strips of this width can be cut?

Chemistry
When treating a patients physicians use an isotonic means that this solution will have the same osmotic pressure as the body fluid such as blood. how many grams of glucose (C6H12O6) is in 100.0 g of H2O in the isotonic glucose solution (5.00% m/m)?

Chemistry
under standard conditions, the following reaction is spontaneous at 298K. O2 + 4H+ + 4Br- --> 2H2O + 2 Br2 Will the reaction be spontaneous if the PH value is adjusted using a buffer composed of 0.10 M benzoic acid and 0.12M sodium benzoate? Given:Given: Ka for benzoic acid...

Chemistry
What is the solubility of CaF2 in a buffer solution containing 0.45M formic acid and 0.20M sodium formate? Given: Ka for formic acid=1.7x10^-4 Ka for hydrofluoric acid=6.8x10^-4 Ksp for CaF2=3.4x10^-11 Thank you so much. I don't have much idea on this.I just calculated the...

accounting
Nonparticipating

Genetics
Why is DNA replication termed semi conservative?

math
Determine the value of k for which the direction vectors of the lines x-1/k = y-2/2 = z+1/k-1 and x+3/-2 = z/1, y=-1 are perpendicular.

math calculus
was I supposed to multiple -8 with |ixk| as I did above or subtract eight from the dot products?

math calculus
thanks! This is my answer, is it correct? (0,0,1).((0,1,-3) +(1,0,-4).(1,0,-4)-8|(1,0,0)x(0,0,-1)| =(0)(0)+(0)(1)+(1)(-3)+(1)(1)+(0)(0)+(-4)(-4)-8|(0,1,0)| =-3+1+16-8 =6

math calculus
if i,j,k are the standard unit basic vectors, in 3 space, determine the value of k dot(j-3k)+(i-4k) dot (i-4k)-8 |i cross -k| (Simplify without using components)

KCKCC
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%. The researcher gathers a random sample of 120 individuals who live in California and finds that the number who exercise ...

math
a tub takes 4 minutes to fill and holds 28 gallons of water. At this rate, how long would it take to fill a bathtub that held 63 gallons of water?

math
15 grams exactly

Urgent Science Question!
A 921kg sports car is moving rightward with a speed of 29.0m/s. The driver suddenly slams on the brakes, causing a 8347N resistive net force and the car skids to a stop. Determine the time it takes to stop the car.

calculus please help asap
thanks

calculus please help asap
true or false questions: a)The derivatives of the reciprocal trigonometric functions can be found using the chain rule and their related base functions. b) A sinusoidal function can be differentiated only if the independent variable is measured in radians. c) There are an ...

social studies
what challenges face people who live as nomads. tell about 2 challenges.

MATH HELP asap PLEASE
A plane is steering at S83degreesE at an airspeed of 550 km/h. the wind is from N70degreesE at 85 km/h. Determine the ground velocity of plane to one decimal. Use the cosine and sine law.

Please Help asap for math
Given the following: vector u= [-2,-1,2] and vector v=[1,-1,-4] and vector w= [4,3,-2] find: a)theta, the angle between vectors, u and w. b)Are the vectors, u, v, and w coplanar?Show your answer algebraically.

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