Popular questions and responses by Adrianna
1. ## Science

While in Europe, if you drive 109km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 39.0mi/gal ? Assume that 1euro=1.26dollars .

2. ## Pre-Cal

Two airplanes take off from an airport at the same time. One travels on a heading of 45 at 420 mph and the other on a heading of 150 at 400 mph. After two hours, how far apart are the airplanes? A.650.66 miles B.1,160 miles C.1,301 miles

3. ## inverse trig HELP PLEASE!!

Write the general solution to y = arcsin (0.6428). 40°±360°k 140°±360°k 220°±360°k 320°±360°k How do I find the right answer? I am like seriously stuck. I need help please.

4. ## Chemistry

A pure sample of (R)-limonene has a specific rotation of +125.6. If a sample had a specific rotation of +35.6, how much of each enantiomer is present in the sample? Show your work. I don't even know where to begin....please help :(

5. ## Algebra

A nurse requires a 40% alcohol solution. The nurse has 20% and 70% alcohol solutions on hand. How many liters of each should the nurse use to make 25 liters of the 40% solution?

6. ## Math

Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 6 bulbs. In the second year, it produced 12 bulbs, and in the third year, it produced 24 bulbs. If this pattern

7. ## Math

The stem-and-leaf plot shows the number of cans of food collected by various students for a food drive. How many students collected more than 43 cans?

8. ## Converting Polar Equations to Cartesian Equations

If theta= pi/3 , then to convert to a Cartesian equation, let x = A.(1/2)r B.(square root of2/2)r C.(square root of 3/2)r

9. ## Converting Cartesian Equations to Polar Equations

Convert the Cartesian equation x^2 - y^2 = 16 to a polar equation. r² = 16/cos2è r = -4 r² = 8 help please im stuck between 2 answers.

10. ## Pre-Cal

A pilot wishes to fly on course 290 with an air speed of 300 knots when the wind blows from 224 at 18 knots. Find the drift angle to the nearest hundredth of a degree. A.3.22° B.5.07° C.86.86° A river is flowing at the rate of 2.4 miles an hour when a

11. ## Pre-Cal

Find the distance from point (-1, 3) to the line 5x- 4y= 10.

12. ## Math

A pound of apples cost 1.20. Rachel bought two and a half pound s o apples if she gives the clerk 5.00 bill how much change will she get back

13. ## english

Locate the participial phrase and the word modified. Approaching the curve, the car slowed down.

14. ## Calculus

Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval and please explain, using a graph of f(x), what the Riemann sum represents. My cousin needs help

15. ## Math

A 3-pound pork loin can be cut into 10 pork chops of equal weight. How many ounces is each pork chop. Is my math correct? 3lb=48oz so 48/10=4.8 so is each pork chop, 4.8 os or do i have to divide 8 by 10?

16. ## Exponential decay

Show that if a radioactive substance has a half life of T, then the corresponding exponential decay function can be written as y=y0e^kt

17. ## Equation from Three Points*HELP*

Write the standard equation for the circle that passes through the points: (0, 0) (6, 0) (0, - 8) You must include the appropriate sign (+ or -) in your answer. Do not use spaces in your answer. x 2 + y 2 x y = 0 HELP PLEASE I NEED STEP BY STEP

18. ## NEED MAJOR HELP! *QUADRATIC EQUATIONS*

Write the equation for the circle with center at (- 8, - 6) and radius of 10. (x+8)² + (y + 6)² = 10 (x+8)² + (y + 6)² = 100 (x-8)² + (y - 6)² = 100 Find the standard equation for the circle with center on the positive x-axis and passing through the

19. ## chemistry

A certain monoprotic weak acid with Ka = 6.7 × 10-8 can be used in various industrial processes, but is no longer used in chemistry teaching labs because it tends to explode when it gets old. (a) What is the [H+] for a 0.558 M aqueous solution of this

20. ## Chemistry

If 42 mL of Cr2O7-2(aq) solution is titrated to the endpoint with 172 mL of 0.15 M Cl-, what was the concentation of Cr2O7-2 solution? I got the reaction 14 H+(aq) _ Cr2O7-2(aq) + 6 Cl- = 2 Cr+3(aq) + 3 Cl2(g) + 7 H20(l) Now I have drawn a blank. Please

21. ## english

If you are very good with people, you have a high level of __________ intelligence.

22. ## Math

Use an example to describe the multiplicative relationship between two equivalent ratios

23. ## Calculus

Hi it's me again I need help with this too and I promise to never use this site again! I feel so ashamed for asking :( Use the Fundamental Theorem to evaluate the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx.The answer has to have the

24. ## Pre alegabra

There are 14 nickels, 10 dimes, 6 quarters, and 22 pennies, what's the probability I will pick a dime from the jar?

Growth potential and opportunity for a small cleaning service business

26. ## Math

I need assistance with statistics and probability. Can you some how assist me with that.?

27. ## College Algebra

3x^4=648x someone help please im so confused. i am trying to find the solution set?

28. ## Arrays and an expanded algorithm

use the grid to draw a rectangle. Then complete the calculation. 30 x19

29. ## Physics

Suppose that when you ride on your 7.90-kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 72.5 lb/in2 and the area of contact between each tire and the road is 7.13 cm2, what is your weight?

30. ## Math College

A 6-sided die is rolled 14 times. What is the probability of seeing a "6" at least 2 times? I am sooo clueless please help!

31. ## penn foster world history

see ive passed Foragers,farmers,and Builders (exam 007678) & The Axial Ages And Fitful Transitions (exam 007679) but i failed Contacts,conflicts,and The Crucible (exam 007680), Convergence,divergence,and Global Enlightenments (exam 007681), Frustrations Of

32. ## CALC

point on the hyperbola 9x^2−6y^2=10 closest to the point (0, 7). y coordinate of each point= ? positive x coordinate= ? negative x coordinate= ?

33. ## Chem

net ionic equation of aluminum hydroxide + sodium hydroxide

34. ## Chemistry

The half-life of the first order reaction, A to products, is 53.2 s. What was the original concentration, (A)0 in moles per liter, if after 1.8 minutes, the concentration of A is 0.0783 moles per liter? Not sure whether to use integrated rate law or half

35. ## Chemistry Lab

So we prepared 100mL of .1M solutions of these solutions, and found the pH and H+ contents: pH H+ HCl: .57 .270 HNO3: .58 .260 H2SO4: 1.29 .051 HC2H3O2: 2.44 .0036 H2C2O4: .84 .145 HKC6H4(CO2)2: 4.13 7.41 Now I'm stuck on this question. What conclusions

36. ## Chemistry

Calculate the pH of a buffer solution that contains 0.23 M benzoic acid (C6H5CO2H) and 0.28 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 10-5 for benzoic acid] Please help?

37. ## english (debate)

hey im in the negative side.the topic is no homeworks on weekends and im the 3rd speaker it really sucks so can you guys help me

38. ## Chemistry

The compound A1B2 (molar mass = 132) has a solubility of 13 g/L. Calculate the Ksp for this compound. I'm stuck on this question, please help?

39. ## math

my daughter is working on calculating how many triangles point up in equilateral triangle. This is her bonus question: solve this problem for an equilateral triangle with sides measuring n units each. I'm lost, help.

WRITING A BOOK REPORT WHAT IS THE IMPORTANT THING I SHOULD WRITE?

41. ## MATHS URGENT

The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me

42. ## Maths (URGENT)

The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me step

43. ## Maths

The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me step

44. ## social studies

what is the national democratic convention?

45. ## Math

Not really understanding solving the formual for the indicated variable. Solve for b2 h/2(b1+b2)

46. ## social studies

What sailor provedthat Columbus did not reach Asia?

1. ## Math

I don't get it

posted on May 15, 2020
2. ## Math

B ?

posted on April 23, 2020
3. ## Language Arts

Annoying is right

posted on April 22, 2020
4. ## math

greg has 40 cents in his hand half of them are quarters and the rest are nickels

posted on February 3, 2020
5. ## math

Greg has 40 coins. Half of them are quarters and the rest are nickels. What is the value of the coins?

posted on February 3, 2020
6. ## calculus

this equation is none factorable

posted on July 29, 2019
7. ## math

8 cups because 2/3 times x/12 you do cross multiplication you get 24 so to get rid of x you divide. So 24 goes into the house and 3 outside and you will get 8

posted on March 11, 2019
8. ## Math

You complete 3 centimeters of a necklace in an hour. Each hour after the first,you triple the length of the necklace. Write an expression using exponents for the length of the necklace after 3 hours.then the length.

posted on September 20, 2017
9. ## Algebra

n still​ water, a boat averages 9 miles per hour. It takes the same amount of time to travel 26 miles​ downstream, with the​ current, as 10 miles​ upstream, against the current. What is the rate of the​ water's current?

posted on June 16, 2017
10. ## LANGUAGE ARTS HELLPPPP!!!!!

LizLiz is 100% correct

posted on March 21, 2017
11. ## LA HELP/CHECK!

I took the test and theses answers are 100% correct 1 A 2 B 3 C 4 D 5 D 6 C 7 B 8 C Hope this helped :)

posted on March 20, 2017
12. ## math

1. D 2. A 3. B 4. A 5. C

posted on December 6, 2016
13. ## Science

The answers are A D D B I took the test and got 100%

posted on December 6, 2016
14. ## math

8267- 2761

posted on October 7, 2015
15. ## math

it think the answer is 2.1

posted on May 5, 2015
16. ## algebra math riddle...

How meny cattel are there on the lazy circle double-o bar four square ranch

posted on January 8, 2015
17. ## Algebra

Slope = -1.5

posted on March 21, 2012
18. ## NEED MAJOR HELP! *QUADRATIC EQUATIONS*

It probably would be easy, but I don't have a teacher teaching me this. I do all my school work online and I just need this class to finish and graduate.

posted on March 20, 2012
19. ## Converting Cartesian Equations to Polar Equations

Thank you.

posted on March 20, 2012
20. ## Pre-Cal

thanks

posted on March 17, 2012
21. ## Pre-Cal

Yes I am, but I don't understand it. I don't have a teacher to teach me. I do my work online, and I just need 2nd semester of pre-cal to graduate.

posted on March 17, 2012
22. ## Pre-Cal

Can you tell me how you did it? I got 5 more questions like this one.

posted on March 17, 2012
23. ## penn foster world history

nope the town i live in is small, im actually like the only homeschooled child so nope we don't have any homeschool meetings...my materials get shipped to me from PA..i cant just like drop out from high school though...i have to finish this class...im

posted on October 7, 2011
24. ## penn foster world history

@writeacher im in the high school program, to get my diploma, trust me when im done i will not be taking college with this school :)

posted on October 6, 2011
25. ## Crossword Question

an objected created and? used by humans

posted on September 21, 2011
26. ## Crossword Question

the knowledge,beliefs,customs,and values of a group of people?

posted on September 21, 2011
27. ## Math

10.6 ft

posted on May 2, 2011
28. ## Chemistry

Thank you!

posted on March 23, 2011
29. ## Chemistry

Haha, yes Chemistry is just a bunch of fun. And yes, thank you that helps a lot!

posted on March 21, 2011
30. ## Chemistry

Oh, thanks! That was so simple! I'm a little confused on how to set up this question? A solution is prepared by mixing 535 mL of 0.30 M NaOCl and 494 mL of 0.26 M HOCl. What is the pH of this solution? [Ka(HOCl) = 3.2 × 10-8] Could you give me a hint?

posted on March 21, 2011
31. ## chemistry

Thank you so much!!

posted on March 7, 2011

x^2+4x+3

posted on March 4, 2010
33. ## Maths (URGENT)

The values for x when f(x) = 0 are: x=-2 and x=3 My question is: The function f(x) can be written in the form of a(x-p)(x-q)(x-r) Write down one possible set of values for p, q, and r? Now Ive got the correct answer x = -3, 2 and 2 Could you show me

posted on October 1, 2009