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Posts by pablo

Total # Posts: 92

math
Select the equation in which the graph of the line has a positive slope, and the y-intercept equals -8. Question 1 options: x - 2y = 10 10x - 5y = 40 5x + y = 50 5x - 10y = -12

english
Which literary movement often rejects order, blurs distinctions between literature types, and uses playfulness in storytelling? Classicism Realism Naturalism Postmodernism

wrld. geog. grade 8
Si no ames diase

Algebra 2
yolanda sells two grades of dog food. type a sells for 75 cents per pound and type b sells for 52 cents per pound. how many pounds of each must be used to produce 600 pounds of mixture selling for 60 cents per pound?

science
I don't know please help me

Math
Write an expression to describe a rule for the sequence then find the 100th term in the sequence. 4,9,14,19,24,29.... A. 4+5n;504•• B. 5n-1;498 C. 5n;500 D. 4n+5;405 Correct me

Math
So for one it would be A???

Math
1. Write a rule for the sequence. 3,-3,-9,-15.... Start With 3 and add -6 repeatedly Start with -6 and add 3 repeatedly •• Start with 3 and add 6 repeatedly Start with 3 and subtract-6 repeatedly 2. Find the next three terms of the sentence. -4,-8,-16,-32... -96,-288...

Math
What is the equation x=y+z solved for z? A. X+y=z B. X/y=z C. Y/x=z D. X-y=z•• Correct me

Math
Okay thanks

Math
How do you know??

Math
The formula V=lwh is used to calculate the valume of a rectangular prism. What is the equation solved for h? A. Vlw = h B. lw/V = h C. V/lw = h•• D. Vh = lw Correct me

Math
A bank offers two interest account plans. Plan A gives you 6% interest compound annually. Plan B gives you 13% annual simple interest. You plan to invest $2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years? How much will you have ...

Math
You borrow 1,200 at a rate of 4.5% for a period of 6 months How much will you repay at the end of 6 months? A. 27 B. 54 C. 1,173 D. 1,227•• Correct me

Math
You borrow 1,200 at a rate of 4.5% for a period of 2 years. How much will you repay at the end of 2 years? a. $108 b. $1,080 c. $1,308 •• d. $2,280 Correct me

math
A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn:    2 + 5 + 8 + . . . + ( 3n - 1) = n(1 + 3n)/2

MATH>:(
Well then good 4 u

MATH>:(
Well then good 4 u

math
Thanks

College Chemistry
Oxygen has a Henry’s law constant of 1.3*10^-3 mol/kg*bar at 25 °C when dissolving in water. If the total pressure of gas ( gas plus water vapor) over water is 1.00 bar, what is the concentration of O2 in the water in grams per milliliter? (The vapor pressure of water...

Chem
11.30x10e7

History
hi, i really need help with this question you don't need to tell me the answer but please just help me out!!! Which of the following best describes the terms of the Treaty of Guadalupe-Hidalgo? A.) Mexico paid the U.S. two million dollars and gave up California, but it was...

Physics
An archer's bow applies a force to an arrow over a distance of 19cm, while firing it vertically upwards. If the arrow achieves a speed of 8.0m/s and the efficiency of the bow is 75%, determine the average force applied to the arrow by the bow. So far I have the Wnet for ...

Physics
Yes, if you go back to the post I don't understand the sqart or that whole equation at all, grade 11 physics! Sorry for replying late btw

Physics
A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor 1.31707778s I used D=Vi(T) + 1/...

Physics
I am sorry I do not know what sqart is, and also sorry for not replying sooner bobpursley, but I tried to solve it myself and this is what I did, perhaps I used sqart? Because V = D/T I decided to find Dx and Dy Found Dy using: D= Vi(1.25) + 1/2(9.8)1.25^2 Which gave me 7....

Physics
A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor 1.31707778s I used D=Vi(T) + 1/...

Materials Science
I can't understand the epsilon r, could you write it again? because it seems - nu ?(epsilon h - Epsilon L/E) and this is not unitless

P.E
its c :)

statistics
If 1,000 students take a test that has a mean of 40 minutes, a standard deviation of 8 minutes, and is normally distributed, how many would you expect would finish in between 24 and 48 minutes?

psychology
I am pretty sure that it is not duplicate and it is not explain.

Science
Not B and not D.

drivers' ed.
Are there some merge points where some drivers are entering while other drivers are exiting in close proximity? I was trying to get on earlier today, and if I had accelerated too sharply, I would have come close to a vehicle that was straight ahead of me.

English
What is historical context? the people and events that influence a writer the map or plan a writer drafts while planning a story all the actions that take place during a story the author’s choice about where to publish a text

Math
Your cell phone cost $40 per month plus $0.15 for each text message you send or receive. You have at most$45 to spend on your cell phone bill. What is the maximum number of text messages that you can send or receive next month?

science
I am sure the answer is B.

science
Complete the following sentence with the best phrase below. Removing just one species from an ecosystem B.would have little effect; unless it was a key stone D.would have a negative effect; especially if it was a keystone species

science
Yes and thank you!

science
I studied them and the answer is C

science
No

science
Please help!

science
Then if it is not D then I believe it is A?

science
D?

science
Which of the following pairs of terms could describe a bullfrog that is active at night and enters a state of complete inactivity during cold months? cooperation and hibernation aggression and circadian rhythm circadian rhythm and hibernation courtship and cooperation

math
The vertex of a rectangle whose side lengths are 6 and 8 lies at the point (-4,6) in the rectangular coordinate plane. Which of the following points could be a vertex of this rectangle? (A) (2,-2) (B) (2,8) (C) (-4,-10) (D) (-4,-4) (E) (-10,2)

math
At a certain grocery store, "a" customers each spend an average of $30 every "b" hours. How much revenue , in dollars, does the store collect in "c" hours?

Math
on Mindy's guitar, the frequency of a vibrating string varies inversely as the length of the string. When a guitar string of "s" inches in length that vibrates at a frequency of 80 cycles per second is shortened to 6 inches in length, it vibrates at a frequency ...

chem
A beaker with 120mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.70mL of a 0.450M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid ...

chemistry
To half of it (500. mL), you add 0.0100mol of hydrogen ions without changing the volume. What is the pH of the final solution?

Physics
The normal force is 160 N. I am not quite sure how to find it though. The back of my textbook just says 160 N.

Chemistry
Thanks a lot!

Chemistry
I have a Chemistry question which should be very simple but I do not know what significant figures are. Assuming the following numbers are measurements and using the rules for significant figures, determine the answer for the following calculation. (15.5/42)*219.5= 1. 81.0059 ...

Algebra2
Write the standard form of the equation of the circle with the given center and radius. 1. center (-2, 0) and r = 3

Algebra2
Write an equation for the line in point/slope form and slope/intercept form that has the given condition. 1. Passes through (3, 2) and is parallel to 2x-y=4 2. Passes through (-1, -1) and is perpendicular to y = 5/2x + 3

Science
Chemistry Enthalpy Calculations? Given the equation: CaO + H2O ----> Ca(OH)2 A 1 g sample of CaO is dissolved in 100 ml water with density 1.00g/ml. The temperature rise is 3.7 degrees C. The specific heat is 4.00 J/g*deg. 1. Calculate the heat (in J) absorbed/given off by ...

Math
find all the numbers less then 100 that are the product of exactly three different prime numbers.

Forensics, Accounting
Confirming inventory

physics
what potential difference is required to pass 3.0 A through 28 ohm's

chemistry
The volume of a gas at 20 C and 0.4 atm is 10 mL. What volume will the same gas sample occupy at standard conditions?

Physics
Two electrostatic point charges of +60.0 uC and +50.c uC exert a repulsive force on each other of 175 N. What is the distance between the two charges? So let's say I use Coulomb's law would the repulsion of 175 N be considered the equivalent of the electric force? Can ...

Physics
Two electrostatic point charges of +60.0 uC and +50.c uC exert a repulsive force on each other of 175 N. What is the distance between the two charges?

Physics (Final Review)
Ok so tomorrow is my Physics final and I have so much depending on this one test ( all my other grades are 80 and above but this one is a low 70). I have studied for the final but if anyone could supply me with a list of most know formulas for physics I would really appreciate...

Physics ( check answers)
Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvf-mvi/change(t) I got 375 for that one... Question 2 A 0.40 kg soccer...

Physics ( check answers)
Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvf-mvi/change(t) I got 375 for that one... Question 2 A 0.40 kg soccer...

Pre-Calculus
Thank you so much!!

Pre-Calculus
I want to learn how to find the domain, holes, x-intercepts, y- intercepts, vertical asymptotes, and horizontal asymptotes of a rational function. I know it is against the rules in jiskha to do the homework for the students but if I have been looking over my notes and I just ...

AP Government
Fair enough I found the first which is Protestant.

AP Government
I have a few question I need answered, if anyone could help I would really appreciate it... 2. All Presidents but one have been a. Protestant b. Catholic c. Evangelical Christian d. Atheist e. Hare Krishna 16. A mid term election is a. A Congressional election that is not ...

Math
yes

Physics(Checking answer)
Ok thanks for the advice, now I can go to sleep.

Physics(Checking answer)
Sorry for the re-post but I really need to know this, but now I just want to know if the question is right. A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the vertical length of the ...

Physics ( elestic potential energy)
A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the vertical length of the spring is 3.57m. Calculate the elastic potential energy stored in the spring.

Pre-Calculus
Solve the equation by finding the square root. 4u2 + 4u + 1 = 75

Physics-Kinetic energy
Two 2.0 g bullets are fired with speeds of 40.0 m/s and 80.0 m/s, respectively. What are their kinetic energies? Which bullet has more kinetic energy? What is the ratio of their kinetic energies? A car has kinetic enery of 4.32* 10^5 when traveling at a speed of 23m/s. What is...

AP Government(Research question so not really)
Thanks a lot!

AP Government(Research question so not really)
I am supposed to make an annotated bibliography for all the research I have done for my history fair project. Thing is I don't know how to make an annotated bibliography and I have looked up examples and I am not sure if you can do it with 50 sources. I am supposed to use ...

Physics- Work
A worker pushes a 1.50*10^3 N crate with a horizontal force of 345 N a distance of 24.0 m. Assume the coefficient of kinetic friction between the crate and the floor is 0.220. a. How much work is done by the worker on the crate? b. How much work is done by the floor on the ...

Physics- Work related
Thank you so much.

Physics- Work related
If 2.0 J of work is done in raising 180 g apple how far is it lifted? I would assume that 2/180 = x but I divided it and it does not sound right.. please someone help.

Physics
If 2.0 J of work is done in raising a 280g apple, how far is it lifted? I would say F= 2.0/180 but that doesn't really sound right...

Physics
Thank u so much!!

Physics
Ok so I am not so bad at physics but I find it hard to understand formular like how to use this one mu *m*g= I know its somewhat related to friction but what is the mu stand for and g too IF someone could plzz translate these symbols to words I would really appreciat it Sorry ...

General Chemistry
Density: 10.63 g/cm^3 m: 1.44 x 10^-10

Physics
all HELP appreciated! Thank You! A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.1 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of...

social studies
how did the geography and climate of the pacific Northwest affect the American Indian there?

Math(is this correct?)
5x5=25

Chemistry
a 0.40 M HCl solution prepared from 25 mL of a 6.0 M HCl solution

word unscramble in french
ocmepaesc

Habla Espanol?
Habla Espanol? si' Thank you for using the Jiskha Homework Help Forum. If you are asking that question correctly, note that the proper punctuation must be at the beginning of the sentence, the tilde is required over the ñ and the language is NOT capitalized. ¿...

Obese Heroes....
Who are some obese people who have had a positive impact on society and been good role models? Good role models for what, the American Heart Association? This is an odd question. Obesity is a serious condition, becoming very shortly the number 1 preventable Health Concern (...

tigonometry
expres the following as sums and differences of sines or cosines cos8t * sin2t sin(a+b) = sin(a)cos(b) + cos(a)sin(b) replacing by by -b and using that cos(-b)= cos(b) sin(-b)= -sin(b) gives: sin(a-b) = sin(a)cos(b) - cos(a)sin(b) Add the two equations: sin(a+b) + sin(a-b) = ...

trig wave forms aargh!
express 10*sin*w.t in the form A*sin*w.t + B*sin*w.t It is already in the form you want. Just set A = 10 and B = 0.

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