Posts by Lisa

Total # Posts: 3,457

Chemistry
Calculate the change in heat when 11.5 g of water vapor (steam) at 100.0°C condenses to liquid water and then cools to 5.00 °C

Chem please help
Thank you so much!

Science
What could be a reason for low specific gravity found in highly dilute urine

Eco
When Joe started his job at the laundromat 5 years ago, his wage was $5.50 an hour. Today his wage is $8.50 an hour. If Joe started his job in the base year, and his real wage is the same as when he started, what is the Consumer Price Index today?

English
It was detached.

English
I'm pretty sure its c- objective. The speaker isn't detached, he knows what is going on he isn't pleased And definitely not critical. I'm stuck between A and C

English
Read the following line from "Not Waving but Drowning." "Poor chap, he always loved larking And now he's dead" a. detached b. pleased c. objective d. critical NOT WAVING BUT DROWNING Stevie Smith Nobody heard him, the dead man, But still he lay moaning...

Math
A goes from (0, 2) to (4, 2) B from (1, ?2) to (2, 1) C from (?1, 0) to (0, 0) D from (?3, ?5) to (2, ?2) E from (?3, ?2) to (?4, ?5) F from (?1, 3) to (?3, 0) (a) A + B? (b) E ? F? (c) ?(B + C)? (d) Which two vectors sum to zero?

English
How would I fix the following sentence into active voice instead of passive? Collaboration with parents of the student would be required to ensure the child receives proper support from the family.

beginning algebra
the product of 2c and 3d my answer: 2c*3d the number of cents in quarters 25q or 0.25q

Math
If you can mow 2/3 of the lawn in 3/4 hour, how much lawn can you mow in 1 hr?

math
3x5+10x3/ 20-(5+6) my work 45/9=5 yes or no please help

math
1. select all three expressions that are equivalent to y^4. A. (y^2)(y^2) B. y^6/y^2 C. y^0 D. y^/y^5 E. (y^4)(y^1) I think its A, C and E. Am I correct?

Chemistry
Write out a balanced chemical equation to show the dissociation reaction of magnesium carbonate in distilled water

math
Amalgamated Furniture Company makes dining room tables and chairs. A table requires 8 labor-hours for assembling and 2 labor-hours for finishing. A chair requires 2 labor-hours for assembly and 1 labor-hour for finishing. The maximum labor-hours available per day for ...

math
A deli o?ers sandwiches to order with the following options. One can select one of 3 types of bread, one of 5 types of spreads and three of 7 types of vegetables. How many di?erent sandwiches are o?ered by the deli.

math
let line A be the graph of the equation x+7y = 3 and let line B be given by the equation 2x + 15y = 6. Use an augmented matrix to determine if the two lines meet and if so at which point. Graph the two lines and indicate their meeting point if it exists. x+7y=3 7y=-x+3 y= -x/7...

math
let line A be the graph of the equation x+7y = 3 and let line B be given by the equation 2x + 15y = 6. Use an augmented matrix to determine if the two lines meet and if so at which point. Graph the two lines and indicate their meeting point if it exists.

RE: PsyDAG
Yes it is

RE: Reiny
I solved for x and got x = 23/14 Is this right

math
Solve the following set of equations. Can I use y = mx + b to calculate the equation 4x?y = 6 2x + 3y = 5

math
An employee saves for her retirement by depositing $1000 a quarter. She deposits her money in an annuity which pays a return of 2% a year compounded quarterly. What will the value of the annuity be after ten years? n = 4*10 = 40 interest per period (quarter) Total = 1220.79 40...

RE: MathMate
If you pay back $100 at the end of the year you didnt pay back any interest it was less than 10% of the loan with the discount

Math
In this question we will check if a discount is actually a discount. Say you are to borrow $100 for a year at a simple interest rate of 10%. Determine the discount D and the proceeds P for this loan. Next take another look at the situation. You take away P dollars and at the ...

Math
Free time Mr. Colborne throws a ball paper in the garbage can the probability the ball goes in the can is 3/4 what is the probability he misses two times in a row?

Math
A total of 130 children attended a basketball camp. Of these, fewer than 87 were girls. Which inequality can be used to find n, the number of boys that might have attended camp?

CHF02
How do you account for the difference in volume of th solids,in steps 1 to 5, terms of intermolecular bonding? Experiment 8: The effects of hydrogen bnding.

4th
I have 3 rolls of ribbon. each roll is 3 yards long. I cut off 1/2 yards from each roll. how much ribbon did I cut off in all.

Math 8
A stop sign has each side measures of 12.4 inches, and the distance from any side to the opposite side is 30 inches. Divide the stop sign into one rectangle and two trappezoids. What are the dimensions of the rectangle and each of the trapezoid Ok I divided it 12.4 all 8 sides...

English
In both Hamlet and Oedipus Rex some of the most significant events are mental or psychological; for instance, awakenings, discoveries, or changes in consciousness. Choose either Hamlet or Oedipus Rex, and in a well-developed essay, analyze the uses the author makes of these ...

Math
Is the decimal 2.628 considered to be statistically significant?

SS
No name is right!! I Just saw the answer and checked... They got 100%!! I had just been on jiskha and then poof here is the answers!

Program Design and Development
Help on Design a class named StockTransaction that holds a stock symbol (typically one to four characters), stock name, number of shares traded, and price per share. Include methods to set and get the values for each data field. Create the class diagram using UMLet and write ...

College Algebra
What would be an extraneous solution to the equation 4/(x+7) +3 = -2/13

physics
percent error for each component for setup II? WOULD THE HYPOTHETICAL SITUATION DESCRIBED BEA RANDOM OR SYNTHETIC ERRROR? EXPLAIN YOUR REASONING. RELATIVE UNCERTAINLY IN 250 G LOAD? PLEASE HELP

physics
can someone help me with physics lab homework please: load 300 g at 60 degree mass at 180 deg 150 g mass at 270 deg 260 g for step two resolution of 300-g at 60 degree f load= fx'= fy'=

PHYSICS
On vacation, your 1400-kg car pulls a 520-kg trailer away from a stoplight with an acceleration of 2.00 m/s2 . A: What is the net force exerted by the car on the trailer? Assume that the positive x axis is directed toward the direction of motion. F = N What force does the ...

College Algebra
For fx=6x-5 and gx=3x^2-4 find the following (fog)(x) Having problems understanding (gof(x)=g(f(x))= 3(f(x))^2-4 3(6x-5)^2-4 (36x-9-25)-4

Algebra
A frame is 4.8 inches wide and 1.5 inches tall. If it is enlarged to a width of 9.6 inches, then how tall will it be?

SS
It not unit 4 its unit 5. I will post the answers for the unit test but I can't not give you the answer for the essay short answer question.

SS
Answers were wrong 9/12 75%

Math
Two fire wardens are stationed at locations A and B, which are 50 km apart. Each warden sights the forest fire at C. Given that angle CAB is 52 degrees and CBA is 43.0, find the distance from C to the nearer warden, to the nearest 0.1 km

Stats
Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and a standard deviation of 16 seconds. Thus, 99.7% of running times are approximately between Need help

Government
Which is a more stable governmental system? Authoritarian or Democratic? I know democratizing countries can be more unstable. However, authoritarian countries like China and Russia are becoming more centralized and are limiting civil liberties in their country.They operate ...

math
a man picks 6 pounds of pecans. he used 1/3 pecans in a pie recipe. he puts the pecans that are left in 1/4 pound bags. how many bags of pecans does he have

Measurement Queston
So 3" means 3 ft? and 3' means 3 inches?

Measurement Queston
Whats the difference from 3" and 3' in a measurement? For example what is the difference from 3" x 12" and 3' x 12' Thank you for the qualification

calculus
A particle is moving with the given data. Find the position of the particle. a(t) = t2 ? 5t + 3, s(0) = 0, s(1) = 20 s(t) =

Sets
Suppose Set B contains 69 elements and the total number elements in either Set A or Set B is 107. If the Sets A and B have 13 elements in common, how many elements are contained in set A?

Working with Events
Suppose your top drawer contains different colored socks: 10 are white, 8 are black, 14 are pink, and 12 are blue. All socks in the drawer are loose (unpaired). In the morning, you randomly select two socks, one at a time. What is the probability that you get either a white ...

math
252 divided by 3.5 =72videos rented 72 divided by four =24 free DVDs

Science
Two birds collide in midair. Before the collision, their combined momentum was 88 kg•m/s to the west. What is their combined momentum after the collision? A. 88 kg•m/s east B. 88 g•m/s north C. 88 kg•m/s down D. 88 kg•m/s west

math-8
suppose hector dilates the rectangle shown below with the center of dilation at 0,0 and a scale factor of 2 and then translates the figure 1 unit to the left. what will be the coordinates the vertices of the similar figure that results, One point on figure is -3,2

Math
what is 6 1/7 - 1 5/21

history
Judaism Christianity Islam Which religion belongs to each of the statements below: Using the three statements below, state the religion that would make that statement true. Each religion will only be used once. In 2-3 sentences, use information from the lesson to support why ...

physics
A ham sandwich consists of one slice of ham (9 grams) and two slices of bread (25 grams each). You have 1 kg of ham and 1.2 kg of bread. You make as many sandwiches as you can. How many sandwiches did you make? 1) How many sandwiches did you makd? 2) What is the mass of the ...

algebra
basic cellphone plan cost $20 per month for 60 calling minutes. Additional time costs .40 per minute. The formula gives the monthly cost for this plan C, for x calling minutes, where x > 60. How many calling minutes are possible for a monthly cost of at least $28 and at ...

algebra
basic cellphone plan cost $20 per month for 60 calling minutes. Additional time costs .40 per minute. The formula gives the monthly cost for this plan C, for x calling minutes, where x > 60. How many calling minutes are possible for a monthly cost of at least $28 and at ...

Economics
why are there unemployment when there is recession?

MGT450
Emergent strategies affect all planned strategies. true or false?

precalc
Identify the center, intercepts, and domain, and range of the equation x^2/4+y^2/9=1

Math
can someone please help quick Choose the correct simplification of the expression (3x)4 can you explain how you got your answer

precalc
Write an equation of the hyperbola given that the center is at (2, -3), the vertices are at (2, 3) and (2, - 9), and the foci are at (2, ± 2√10).

precalc
Use the equation 〖(y+2)〗^2/4-((〖x+3)〗^2)/49=1 to find the following: a. center: b. vertices: c. foci: d. graph:

math
6 by 9 B

Math
56 ya’ll

adv algebra
When a number is divided by 5 and then 3 is subtracted, the answer is the same as when the number is divided by 4 and then 2 is subtracted. Is it 0? How do I show?

Math
Math question: My plane arrived in Chicago 45 minutes later from Detroit. How fast was my plane which traveled at about 20000 altitude?

chem
A 250 beaker has graduations every 25 mL. With what accuracy can you estimate the volume of liquid in the beaker?

algebra
thank you Steve for helping me. I figured it out. 2x-8=y is the rule

algebra
I need to write a rule for each pair x y 4 0 5 2 6 4

algebra
I need to write a full for the function. x = 4,5,6,7 y = 0,2,4,6 y=4*0

Chemistry
You have to work with 240 mL of a liquid. You are provided with 250 mL, 400 mL and 800 mL beakers. Which would be the best size of beaker to use? Which would be the worst size? Explain your reasoning. A 250 beaker has graduations every 25 mL. With what accuracy can you ...

physics
What is the acceleration of a 10-N freely falling object with no air resistance?

algebriac expression
Stephanie has d dollars to invest and splits the money between two accounts. If she invests $ 3100 in one​ account, write an algebraic expression in terms of d for the amount she invests in the second account.

Computers
Brian would like to automatically check the spelling in a presentation. To do this, he should select which tab?

Science
A helium tank has a volume of 8.0 L. It contains enough helium to fill 23 circular balloons with a radius of 15 cm at a temperature of 25.0 C (room temperature). Assume that the pressure inside the balloons is 2.0 atm. What volume would all the gas in the tank occupy at 2.0 ...

Math
Which of the following best complete the sequence below c3, H8, M13, R18....

math
in the middle of a page draw a small oval oriented vertically connected to the bottom of the oval draw a small rectangle oriented vertically what does this resemble

Basic Accounting
Pay $3000 toward lease agreement for office. The agreement is for 1year. The rent is 1,500 per month, last months rent was required at time of lease agreement. Lease period is effective July 1st 2014 through jun 30th 2015. I think it's like this: Rent expense 1,500.00 ...

Basic Accounting
Pay $3000 toward lease agreement for office. The agreement is for 1year. The rent is 1,500 per month, last months rent was required at time of lease agreement. Lease period is effective July 1st 2014 through jun 30th 2015. I think it's like this: Rent expense 1,500.00 ...

Biostatics
Walleye is a common game fish. Adult walleye have a length with a mean of 48 cm and a standard deviation of 3 cm and the distribution of lengths is approximately Normal. What fraction of walleye are shorter than 45 cm in length?

Calc-Math
Evaluate the limit using l'hospitals rule. lim->0 (3^x-6^x)/x. Do not know where to even begin on this one... please help.

statistics
Consider the data below: 33.1068240, -6.3331469, 22.2903011, -6.9142991, -21.7899524, -12.1741625, 29.2973275, -34.2364631, -4.4113930, -25.7845033, -12.0375226, 17.9397860, -6.2030667, 0.3504070 , -19.4854146, -10.5979710, -27.1274107, 20.4247578, 17.0975034, -6.8416016, 0....

statistics
Z = 1.5. The mean and variance of the corresponding X are 1.3 and 5.6. Compute X:

statistics
Consider the data from an unknown distribution: 40.68, 32.15, 36.91, 29.00, 35.58, 41.55, 33.83, 29.07, 41.00, 37.68, 41.23, 37.54, 40.33, 36.82, 35.18, 31.67, 38.55, 38.34, 35.86, 40.45, 37.28, 36.65, 32.12, 32.96, 37.65, 39.44, 46.18, 24.21, 42.35, 33.05, 30.90, 42.12, 34.38...

statistics
A sample of blood is assayed for its alcohol content (BAC). The following BAC values are determined from six trials: 0.081%, 0.078%, 0.079%, 0.076%, 0.082%, 0.077% Assume the data follows a Gaussian distribution. For 84% of the possible assay data population determine with 93...

statistics
Z = 1.5. The mean and variance of the corresponding X are 1.3 and 5.6. Compute X:

science
work=force x distance rearrange and you get: force=work/distance

statistics
Z is a standard normal random variate. For Pr(c < Z) = 0.278, what is the value for c?

statistics
4.6 is a N(3.5, 1.2) random variable. What is its standard value, Z?

Math
Pouring gravel in a cone shaped pile 6 feet high Suri a diameter at the base of 8.2 feet how much gravel in poured??

Maths lit, life science, economics, geography
hey, I want to do medicine and civil engineering is this subjects are right? If not please tell me which career i can go to with this subjects after my matric? Thanks

Algebra
A scuba diver is positioned at-30 feet. How many feet will she have to rise to change her position to -12 feet?

language arts
from the giver please check my answers 1. At the beginning of the novel, Jonas describes himself as apprehensive. Why is he apprehensive? A. An unknown plane is flying overhead. B. The Ceremony of Twelve is coming soon.**** C. A loudspeaker orders everyone inside. D. A ...

math
a cyclindrical water storage tank contains 2187 cubic units of water. All the water is pumped equally into 3 congruent cubic coolers. What is the minimum length that each coller need to be?

math
ok thank you

math
write each expression using a single exponent please help 1.a^5/a^3 2.x^9/x^5 3.c^7/c^2 4. (-1)^5/(-1)^4

language arts
please check my answers 1. At the beginning of the novel, Jonas describes himself as apprehensive. Why is he apprehensive? A. An unknown plane is flying overhead. B. The Ceremony of Twelve is coming soon.**** C. A loudspeaker orders everyone inside. D. A newchild in the ...

language arts
The giver Choose the statement that best explains the meaning of the following passage: But now, with twelve coming so soon, and the volunteer hours ending, it didn't seem to meter. The freedom to choose where to spend those hours always seemed a wonderful luxury to Jonas...

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