# Kimmie

Most popular questions and responses by Kimmie
1. ## chemistry help

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants? 2Na(s)+Br2(g) ---->2NaBr(s) 1. 2mol Na, 2mol Br2 2. 1.8mol Na, 1.4mol Br2 3. 2.5mol Na, 1mol Br2 4. 12.6mol Na, 6.9 mol Br2

if a map scale distance is 2cm:15km, what is the actual distance of a map scale that is 6cm? Do I set this problem up like this: 2cm/15km=?/6km and then cross multiply?

3. ## Chemistry

Hey, So a runner wants to run 10.0 km. She knows that her running pace is 7.5 m per hour. How many minutes must she run? Can you explain it?

4. ## Math

An airplane crosses the Atlantic Ocean​ (3000 miles) with an airspeed of 600 miles per hour. The cost C​ (in dollars) per passenger is given by C(x)=150+x/20+36,000/x What is the cost per passenger for quiescent​ (no wind)​ conditions? What is the

5. ## Pyhsics

The weight of the atmosphere above 1 m2{\rm m}^{2} of Earth's surface is about 100,000 N{\rm N}. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m3{\rm kg}/{\rm m}^{3}. Calculate where the top of the

13. ## Finance

Can anyone explain to me how to use this formula? Cost of failing to take a cash discount Disc  ount percent 100 percent Discount percent 3   60 Final due date  Discount period I am trying to calculate Assume the proceeds from the loan with the

14. ## Algebra

How would I express the coordinates for y20 by x(-20)

15. ## pre-calculus

If sin a = 3/5 when Pi/2

16. ## science

Suppose that a biologist states that the average height of undergraduate students at your university is 205 cm plus or minus a standard deviation of 17 cm. What does this mean? Does it mean that the height of undergraduates at the university ranges from 17

17. ## math

Simplify (3x-2)^3 - (4x+5)^2 Can you show it step-by-step please

18. ## math calculus

A person stands on a bridge that is 100 feet above a river. If she drops a pebble how fast is it moving after 2 seconds? How long does it take the pebble to reach the river below? She has another pebble that she tosses up with initial speed of 8 feet per

19. ## Algebra

For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $60 and each tree is$84, what is the maximum number of trees you can buy

20. ## Algebra

A batch of concrete is made by mixing 1 part cement, 2.5 parts sand, and 3.5 parts gravel. How many pounds of sand and gravel are needed to make 300 pounds of cement?

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 100 mile per hour and train B is traveling at 125 mile per hour. Train A passes a station at 3:15pm. If train B passes the same station at 3:27 pm at what time

22. ## ethnics

impact of Orientalism on Muslim and Arab Americans?

23. ## math

Find the maximum and minimum value of the quadratic function g(x) = 2x^2 + 6x + 3

f(x)=2x; -1(is less than or equal to) x (less than or equal to) 5 Find the domain of the function.

25. ## Pyhsics

What would be the final temperature of a mixture of 50 g{\rm g} of 17∘C^\circ C water and 50 g{\rm g} of 44∘C^\circ C water? I have no clue where I should even begin please help.

26. ## calculus HELP!

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its

27. ## Help! Calculus

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its

28. ## Physics

Capacitor X is charged to a potential difference 68 V by a battery. It is disconnected from the battery and then connected in parallel to an uncharged 12 µF capacitor. A voltage of 20 V is measured across the parallel combination. Calculate the

29. ## math

rewrite in standard form f(x)=x^2 -x-6

f(x)=2x; -1(is less than or equal to) x (less than or equal to) 5  Find the domain of the function.

31. ## math

Given the graph of y=f(x) 1. y = (-f) **I think this is that you reflect across the x-axis. 2. y = f(-x) = f(x) even I'm not sure. 3. y = -f(x) = f(-x) odd Not sure either.

32. ## math

Factor completely: A. 3x^3/2 -9x^1/2 +6x^-1/2 B. x^3 y -4xy

35. ## human resources 240

What are the special challenges of criterion contamination and what would be the effects on employees and employers if these challenges are not addressed?

36. ## Algebra

How would I express the coordinates for y20 by x(-20)

37. ## 9th

Solve for: -20

1. ## algebra

is it "a"

posted on September 28, 2017
2. ## algebra plz check answer

y = 3x 4 - 2x 2 + x - 3 factor (3x^4 -2x^2) (x-3) Factor out x^2 from the first, so you have (x^2) (3x^2 - 2) (x-3), so x^2=0 3x^2 - 2 = 0 x-3=0 So how many zeros can you get after you solve these?

posted on September 8, 2014
3. ## math

Follow the order of operations. 8 x [5 + (18-7)] ÷ 4 First, the parenthesis, (18-7) = 11, so 8 x [5+11] ÷ 4 Next, the parenthesis again, (5+11)=16, so 8 x (16) ÷4 Multiplication, 8 x (16) = 128, so 128 ÷ 4 Finally, division, 128 ÷ 4 = 32 so your

posted on September 8, 2014
4. ## Help! Calculus

it's for calculus

posted on November 6, 2013
5. ## Algebra

Thank you Ms. Sue, I can now understand what it was I was looking for. I kept thinking square and not seeing I was actually measuring a right triangle. Thanks again!

posted on June 20, 2011
6. ## human resources 240

Thank you for the suggested sites, they were a tremendous help. I was able to understand what criterion defiecncy actually was and how the challenges would affect both the employee and employer if not addressed.

posted on January 3, 2011
7. ## Algebra

Thank you so much. Sorry if you thought I was being impatient. I have no clue how I managed to do that. I will be careful to make sure it doesn't happen again. Thanks again.

posted on December 24, 2010
8. ## Algebra

Sorry it must have been a mistake. I would not do that intentionally and I realize there are few people to help and the help isnt instant.

posted on December 24, 2010
9. ## Algebra

I figured it out, and actually you multiply the 2.5 by 300 and then the 3.5 by 300 to get the amount of sand and gravel!!

posted on September 22, 2010
10. ## pre-calculus

Thanks!

posted on January 28, 2010