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Posts by Jacqueline

Total # Posts: 175

Math
Two units

Math
2 quarts

Chemistry
I'm supposed to estimate the ΔH for O || H2C=CH2 +O3(g)--- CH3CH(g) + O2(g) and i got [4(432)+(614)+(1072)]-[3(413)+(347)+(745)+(358)+(467)] the answer i got was 182 but the answer was wrong and i'm not sure what i did wrong.

algebra
Speed cell wireless offers a plan of $40 for the first 400 minutes and an additional 0.50 for every minute over 400. Let t represent the total talk time in minutes. Write a piecewise -defined function to represent the cost C(T)

physics PHUTINARE
I need answers of find the magnitude of normal force acting on the skateboard on 10 kg àt point A and 10 m at point B

business mathematics
the maturity value of a $20,000, 7%, 75-day interest-bearing note dated september 10 is?

fundamentals math
I cant use that table when Im taking a test or exam I would need to know the steps since its a online class?

fundamentals math
hard*

fundamentals math
A standard math test was given to 6000 students. The scores were normally distributed with a mean of 420 and a standard deviation of 40. If george scored 340, how many students scored more than George? This is hrd because I tried using calculator but that's not the help i ...

Chemistry
How would you know if AgNO3 + Al(NO3)2 forms a precipitate?

Math
he annual precipitation for one city is normally distributed with a mean of 399 inches and a standard deviation of 3.3 inches. In what percentage of years is precipitation in the city between 392.4 inches and 405.6 inches? Hard help?

Math
The systolic blood pressures of a group of 18-year-old women are normally distributed with a mean of 120 mmHg and a standard deviation of 12 mmHg. What percentage of women in this group have a systolic blood pressure between 108 mmHg and 132 mmHg?

Math
The amount of Jen's monthly phone bill is normally distributed with a mean of $55 and a standard deviation of $9. Within what range are 68% of her phone bills?

college algebra
The total yearly food bill for a family of four is $9395.59. To the nearest cent, what is the mean weekly food bill?

Math
The five sales people at Southwest Appliances earned commissions last year of $13,000, $22,000, $47,000, $15,000, and $24,000. Find the mean commission.

Math
Find the mean, median, and mode. Round to the nearest tenth when necessary. 1) Given these board lengths: 20.2, 1.2, 5, 5.8, 16, 20.2, 5, 1.2, 20.2, 20.2

Math
If a trend line has equation y=-4x-6, what y- value would you expect to obtain when the x- value is 0? ?

Math
If a trend line has equation y=4x-5, what y- value would you expect to obtain when the x- value is 5? this is kind of tricky

Math
License plates are made using 3 letter followed by 2 digits. How many plates can be made if repetition of letters and digits is allowed?

Math
210 was my choice answer and I got it wrong

Math
How many 3-digit numbers can be formed sing the digits 0,1, 2, 3, 4, 5, 6, if repetitions are not allowed? however 180 can't be the answer i checked? any one know how to solve this one

Math
What if its a fraction that given?

Math
So 100 is the total?

Math
at a track meet with 200 participants, 45 participate in jumping event, 1/3 of these jumpers are female, and 1/2 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please please ...

Math
how many 3 digit numbers can be formed using the digits 0,1,2,3,4,5,6, if repitition is not allowed?

algebra
How many possible license plates can be formed consisting of five letters in the first letter must be either M,N, or P?

history
Which of the following descriptions applies to the Ku Klux Klan? The organization was centrally organized. It served the interests of Democratic politicians engaged in "redeeming" the South. The organization was used exclusively by planters. The organization was ...

history
The ______________________________ signaled the end of the Reconstruction era and completed the repudiation of the idea, born during the Civil War and pursued during Congressional Reconstruction, of a powerful federal government protecting the rights of all citizens. help?

history 1302
How often were most cowboys paid?

algebra
How many possible license plates can be formed consisting of three letters in the first letter must be either M,N, or P?

Math
The odds of rolling two dice and the sum being greater than 9 are 6 to 30. What is the probability that the sum of two rolled dice is less than or equal to 9? I got 1/5 because its greater? help.

Math
the odds in favor of an earthquake are 7 to 1. what is probability that an earthquake will occur? So is it 1/7 ? im confused

Math
if the probability that an identified hurricane will make a direct hit on a certain stretch of beach is 0.20, what are the odds against a direct hit? 1 : 0.20 I :19 i think its like this way?

Math
A lottery game has balls numbered through 19. What is the probability of selecting an even numbered ball or a 4 ?

Math
correct*

Math
a lottery game has balls numbered 1 through 19. What is the probability of selecting an even numbered ball or a 4? Its hard one please anyone know how solve?

math
at a track meet with 135 participants, 25 participate in jumping event, 1/5 of these jumpers are female, and 1/3 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please help?

math
one digit from the number 9,848,778 is written on each of seven cards. What is the probality of drawing a card that shows s 9, 8, or 4?

mathematics
one digit from the number 3,474,554 is written on each of seven cards. What is the probability of drawing a card that shows s 5?

math
Two dice are rolled. Find the probability that the score on the dice is 5.

history
the topic during the that time period

history
The 1920s and The Great Depression. The Flappers does any one know the story? summary?

math
The right answer is 17.55% but I want to know how to get that the solution please help

math
The tight answer is 17.55% but I want to know how to get that the solution

math
James purchased a bond for $3200, and ten months later he sold for $3700. What annual rate would he have to earn in a savings compounded monthly, to earn the same money on his investment?

math
A baseball team played 149 complete games last season. They had 31 fewer wins than losses. How many games did the team win?

algebra/ math
Solve the problem. Leave the answer in exponential notation. The expression 2^6 x64^t approximates the number of bacteria after t hours. After 1/2 hr, how many bacteria are those? is it 2^6..

mathematics
what is t that's what I'm trying to find

mathematics
A house was purchased for $67,000 After 7 years the value of the house was $130,000. Express the house's value V(t) in terms of time t in years.

fundamentals math
I got 9.9335897436 so its 10?

fundamentals math
Last year, Maria earned $312 per week. This year, her salary increased to $343 per week. What is the percent of increase?

math
945.168 and round to nearest cent. is 950?

Fundamentals of Math
10200

Fundamentals of Math
okay I know you multiply? since it wants to know how much spend on promotions

Fundamentals of Math
you divide $51,000 by 20% ?

Fundamentals of Math
An outlet store had monthly sales of $51,000 and spent 20% of it on promotions. How much was spend on promotions?

Mathematics
I subtracted the $320.09 by $11.20 but I wasn't sure so I added all the deductions and subtracted that by the $320.09..

Mathematics
308.89? or 238.85?

Mathematics
Its hard that's why I'm asking for help if you multiply and divide it becomes a large number

Mathematics
Ray's gross pay is $320.09 a week. &46 is witheld for federal income tax, $24.04 for FICAtax, and $11.20 for other deductions. Find his net pay? please help.

Mathematics
Ray's gross pay is $320.09 a week. &46 is witheld for federal income tax, $24.04 for FICAtax, and $11.20 for other deductions. Find his net pay?

mathematics
Jake has a cable that is 55.3 feet long. He wants to cut it into pieces that are 7.9 feet long. How many 7.9 foot pieces will he get from the cable?

Algebra
A stunt man drops from the top of a 50 foot elevator shaft. His height above ground is determined by the equation h=-16(t)(t)+50. At the moment the stunt man begins to drop, an elevator goes up so that its height above ground is determined by the equation h=34t. After how many...

Algebra
A stunt man drops from the top of a 50 foot elevator shaft. His height above ground is determined by the equation h=-16(t)(t)+50. At the moment the stunt man begins to drop, an elevator goes up so that its height above ground is determined by the equation h=34t. After how many...

english
Guys your source was good can you give another Web to search about Natalie Du toit

english
Disabled athlete .I mean their names and what they do

english
A disabled athlete who became well known

english
The story of a disabled athlete who became well known :narrative story

staticsits
65 % college students believe that their online education. give the null hypotheis for testing the claim made by survey what is the null hypothesis

IMPROVING WRITING
I have noticed that in the past three months, a month after Jessica Hilo’s medical leave, there have been problems concerning Ruth and Jack’s workload. To begin with, Jessica’s duties have been temporarily reassigned to Frank and Ralph. Furthermore, Ruth ...

IMPROVING WRITING
Background Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides secretarial support ...

English
Background Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides secretarial support ...

Algebra 2
Use Cramer's rule to find the number of items the company must sell each week to break even. y= 20x + 200 y= 25x D= |20 -1|. -20 - (-25) . |25 -1| D= 5 Dx= |200 -1|. -200 - 0 . |0 -1| Dx= -200 Dy= |20 200|. 0 - 5000 . |25 0 | Dy= -5000 x= Dx/D x= -200/5 x= -40 y= Dy/D y= -...

Please help-algebra
Multiply Everything By 100 To Get The Decimal Out. 100x= 10y + 1500 100y= 15x + 1000 100y= 1000x + 15 100x= 1000y + 15

Algebra
Write an equation that expresses the relationship. Then solve the equation for c. q varies jointly as c and the square of h.

medical terminology
what is busting forth of blood?

algebra
If you walk 3/4 mile and then jog 2/5 mile, what is the total distance covered?

algebra 2
Which of the following is the solution to |x|-2<-3? The less than symbol has a line under it if that changes.

math
$0

Chemistry
Calculate the heat in kilojoules needed to vaporize 8.00kg of water at 100∘C.

math
3x 1/4 equal 3/4

Math
Using continuous compounding. A 13,000 deposit in an account with APR of 4.5 percent is. The balance in the account after 1 year is what.

math theory
write a rational and irrational number between 1.12301 and 1.1230101.

physics
A railroad car with a mass of 2.35 × 104 kg moving at 3.90 m/s collides and joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.25 m/s. a) What is the final speed of the three ...

Narrative story
Sorry I don't have any idea for your story

Chemistry
What is the freezing point of a soluton is which 10.0 g of naphthalene [C10H8(s)] is dissolved in 50.0 g of benzene [C6H6(l)]? Extra info you might need: benzene= 5.12 degrees C m^-1 Answer should be: -2.46

Chemistry
What is the freezing point of a soluton is which 10.0 g of naphthalene [C10H8(s)] is dissolved in 50.0 g of benzene [C6H6(l)]? Extra info you might need: benzene= 5.12 degrees C m^-1 Answer should be: -2.46

Chemistry
Nitrocellulose lacquer is used as a protective coating on wood. What mass of nitrocellulose is contained in one gallon (3.8L) of lacquer that is 5.1% nitrocellulose by mass? The density of the lacquer is 0.79 g/mL.

Math?
136

Math
I=p*r*t p=600 fv=1200 I=1200-600=600 r=12%=0.12 t=? years t= 600/(600*0.12) t=8.33 years

Math
3p=p(1+ 0.14t) divide by p to get 3=1+ 0.14t 0.14t=3-1 t=2/0.14 t=14.286 years

Chemistry
The vapor pressure of benzene (C6H6) at 25 degrees C is 95.1 mm Hg. What is the vapor pressure of benzene above a solution in which 5.05 g C6H5COOH (benzoic acid) is dissolved in 25 g C6H6? Answer should be 93.9 mmHg

Chemistry
How many milligrams of a mixture containing equal numbers of moles of CH and N2 at 10.0 atm total pressure will dissolve in 1.00 L of water at 20 degrees C? Answer should be 2.1 x 10^2 mg

Chemistry
At 25 degrees C and 1 atm gas pressure, the solubility of CO2(g) is 149 mg/100 g water. When air at 25 degrees C and 1 atm is in equilibrium with water, what is the concentration of dissolved CO2, in mg/100 g water? Air contains 0.037 mol % CO2(g). the answer should come out ...

Physics...
While following the directions on a treasure map, a pirate walks 23.5 m north, then turns and walks 2.7 m east. What is the magnitude of the single straight-line displacement that the pirate could have taken to reach the treasure? Answer in units of m

Physics
Idk

math
A moose weighs 1,324 pounds.Show this number in three other ways.Label or describe each way.

Physics
Suppose the force exerted by the air on one face of a cube is 8820N. Each side of the cube measures 30cm. Calculate the pressure on this face?

algebra
Solve the following system of equations for the unknown variables. x + y = 12 x – y = –2 (NOTE: Show answer in the following format (#,#). If not entered in this format, will be scored incorrect.)

Math
How do you divide decimals? Ex. 0.05/0.04=?

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