# Ernie

Popular questions and responses by Ernie

The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the poverty level cutoff in 1987 to the nearest dollar. the poverty level cutoff in 1987 was _____ dollars. (

2. ## math

If a building contractor hires 5 day laborers and 2 concrete finishers, his payroll for the day is \$1200. If he hire 1 day laborer and 4 concrete finishers, his daily cost is \$924. Find the daily wage for each type of worker.

3. ## Calculus

1. Express the given integral as the limit of a Riemann sum but do not evaluate: integral[0 to 3]((x^3 - 6x)dx) 2.Use the Fundamental Theorem to evaluate integral[0 to 3]((x^3 - 6x)dx).(Your answer must include the antiderivative.)

4. ## math

If 18g of a radioactive substance are present initially and 5 yr later only 9g remains, how much of the substance will be present after 11yr?

5. ## College Algebra

The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the poverty level cutoff in 1987 to the nearest dollar. the poverty level cutoff in 1987 was _____ dollars. (

6. ## Calculus

Using 4 equal-width intervals, show that the trapezoidal rule is the average of the upper and lower sum estimates for the integral from 0 to 2 of x squared, dx .

7. ## Writing skills

Their sure the only sounds they will hear at night will be the wash of ocean waves or the croaks of bullfrogs.

8. ## Writing skills

Many people who spend their summers in a city dream of owning a cottage at the shore or in the mountains by a lake.

9. ## Calculus

Find the interval on which the curve of y equals the integral from 0 to x of 6 divided by the quantity 1 plus 2 times t plus t squared, dt is concave up.

10. ## math Too Hard!

to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65 moose are caught, of which 15 have tags. Estimate the size of the moose population.

11. ## intermediate algebra

a motorboat moves 25 miles per hour in still water. it travels 21 miles upstream and 21 miles downstream in a total time of 2.0 hours. whatis the speed of the current?

12. ## algebra

``If 18g of a radioactive substance are present initially and 5 yr later only 9 g remain, how much of the substance will be present after 11yr ? after 11yr there will be ___g of a radioactive substance. round the final answer to the nearest thousandth as

13. ## algebra

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled \$123.62. The basketball FCI was \$\$6.98 more

14. ## algebra

The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time it takes to walk 12ft on a non moving sidewalk in the oppsite direction. At what rate would a person walk on a nonmoving

15. ## algebra

Find the doubling time of an investment earning 7% interest if interest is compounded continuously is ____years. Round to the nearest tenth of a year.

16. ## Writing skills

Whether or not we have chosen to use our licenses since then.they remain of enormous value to us.

17. ## math ?

Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k. f(x)=x^3 +6x^2 +10x+4,k=-2 Is f(x)= 0 ?

18. ## Writing skills

In the past,the United States Public Health service and state local health departments dominate the field.

19. ## math

find the distance between the points (-20,16) and (-15,19). also find the midpoint of the segment that joins the points. what is the distance?_____ what is the midpoint?______

20. ## algebra

The perimeter of a triangle is 57in. The longest side is 13in. longer than the medium side, and the medium side is 7 in. more than the shortest side. find the length of each side of the triangle. The length of the longest side is ___in, the length of the

21. ## Algebra 2

Did I solve this word problem correctly? In last week’s basketball game, the Lions scored 6 less than twice what the Bobcats scored. The sum of their scores is 30. How many points did the Lions and the Bobcats score individually? 2x+2x-6=30 2x+2x=36

22. ## math-algebra

The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time it takes to walk 12ft on a non moving sidewalk in the oppsite direction. At what rate would a person walk on a nonmoving

23. ## Writing skills

Many people who spend their summers in a city dream of owning a cottage at the shore or in the mountains by a lake.

24. ## algebra

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled \$123.62. The basketball FCI was \$\$6.98 more

25. ## Writing skills

Some just look forward to the perspect of watching birds and animals,such as rabbits or deer,in their natural habitats.

26. ## math

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled \$123.62. The basketball FCI was \$\$6.98 more

27. ## math

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled \$123.62. The basketball FCI was \$\$6.98 more

\$11,000, invested for 9 years at 3% compounded quarterly.

29. ## algebra

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled \$123.62. The basketball FCI was \$\$6.98 more

Factor f(x) into linear factors given that k is a zero of f(x). f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored form, f(x) =____ (factor completely. simplify your answer)

31. ## math

The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The FCIs for an Independent tennis league and an Independent basketball league totaled \$123.62. The basketball FCI was \$\$6.98 more

32. ## physics

The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time it takes to walk 12ft on a non moving sidewalk in the oppsite direction. At what rate would a person walk on a nonmoving

33. ## math help

Factor f(x) into linear factors given that k is a zero of f(x). f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored form, f(x) =____ (factor completely. simplify your answer)

34. ## math alegebra

to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65 moose are caught, of which 15 have tags. Estimate the size of the moose population.

35. ## finance

\$11,000, invested for 9 years at 3% compounded quarterly.

36. ## math

If a building contractor hires 5 day laborers and 2 concrete finishers, his payroll for the day is \$1200. If he hires i day laborer and 4 concrete finishers, his daily cost is \$924. Find the daily wage for each type of worker.

37. ## algebra

to determine the number of trout in a lake, a conservationist cathes 123 trout, tags them and throws them back into the lake. later,44 trout are caught, 11 of them are tagged. how many trout would the conservationist expect to be in the lake

38. ## earth

A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?

39. ## algebra

If a building contractor hires 5 day laborers and 2 concrete finishers, his payroll for the day is \$1200. If he hires i day laborer and 4 concrete finishers, his daily cost is \$924. Find the daily wage for each type of worker.

40. ## math

midpoint (4,13) endpoint (0,6). find the other endpoint

41. ## math word problem

to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65 moose are caught, of which 15 have tags. Estimate the size of the moose population.

42. ## Calcuus

What are the points of inflection for the function f(x)=xln(x)? Thanks a lot, you guys are the bomb!

43. ## algebra

Abigail buys a dress for \$12 & a backpack for \$10.50. She is also charged 9% sales tax on the dress only. Write an expression that represents total cost abigail had to pay

let f(x)=-5x+6 find and simplify f(x+2) f(x+2)=____

45. ## math

A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?

46. ## math alegebra

A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is 32.2 ft./sec^2. How far is the satellite from the surface of the earth?

47. ## math

lim x-->-9 x^2+10x+9 / x-9

48. ## Algebra

Find the 1st four hexagonal numbers and the formula The difference of two squares a2 - b 2 can be found in 16sq2 – 13sq2 = 3(16 + 13) = 3 . 29 = 87

49. ## math

Express f(x)in the form f(x)=(x-k)q(x)+r for the given values of k. f(x)=x^3+6x^2+10x+4, k=-2 f(x)=____

50. ## ino literacy

what is the call number of the oldest copy of Ellison's Shadow And Act

Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k. f(x)=x^3 +6x^2 +10x+4,k=-2 Is f(x) =0 ?

52. ## algebra

Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k. f(x)=x^3 +6x^2 +10x+4,k=-2 Is f(x) =0 ?

Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k. f(x)=x^3 +6x^2 +10x+4,k=-2 f(x)=_____

54. ## math

find the slope of the line containing the pair of points. (-5,-10) and (-4,-3)

55. ## Algebra

let f(x)=-5x+6 find and simplify f(x+2) f(x+2)=___

56. ## algebra

midpoint (-5,-15) endpoint (-13,-8). find the other endpoint

57. ## math

Express f(x)in the form f(x)=(x-k)q(x)+r for the given values of k. f(x)=x^3+6x^2+10x+4, k=-2 f(x)=____

59. ## math help

Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k. f(x)=x^3 +6x^2 +10x+4,k=-2 f(x)=_____

60. ## math thanks for your help

-2;p(x)=3x^3+5x-6 is -2 a zero of the polynomial(x) ?

61. ## algebra

let f(x)=-5x+6 find and simplify f(x+2) f(x+2)=____

2x^2+5x-1=0

63. ## Algebra

25sq2 – 21sq2 = 4(25 + 21) = 4 . 46 = 184

hwo would I calculate the original discount price of and item if coast 150 and was sold to me at 75

65. ## math thanks for your help

-2;p(x)=3x^3+5x-6 is -2 a zero of the polynomial(x) ?

67. ## math really need help!

let f(x)=-5x+6 find and simplify f(x+2) f(x+2)=___

1. ## Calculus

What does it mean by "upper and lower estimates?" How do I find these?

posted on May 7, 2018
2. ## Writing skills

What corrections should be made to this sentence?

posted on May 15, 2017
3. ## Writing skills

Thank you Ms.Sue should I make any corrections to this sentence.

posted on May 15, 2017
4. ## Math

Yes, Rob had a larger pizza

posted on April 4, 2016
5. ## math

you shouldn't be a tutor if you don't want to help people.

posted on December 4, 2014
6. ## math

Thanks DonHo

posted on December 4, 2014
7. ## math

Thanks Reiny

posted on December 4, 2014
8. ## math

linear

posted on December 3, 2014
9. ## algebra

x=17 x-7=10+17=27+17=44+13=57

posted on December 2, 2014

5249

posted on March 19, 2014
11. ## Algebra 2

Any function? The simplist way to do this would be to assume a cubic function with roots -1, -5, and 3. This would mean it would be factorable into: (x+1)(x+5)(x-3). Simply multiply these three !@#\$%^&tions together and there's an answer.

posted on December 8, 2013
12. ## earth

thank you bobpursley, and Anne so much for your help. you are the best

posted on December 4, 2013
13. ## algebra

Thank you so much.

posted on October 7, 2013
14. ## algebra

Thank you so much Ms. Sue

posted on October 6, 2013
15. ## algebra

492

posted on October 6, 2013
16. ## vocab

I NOT UNDERSTAND YOUR QUESTION SORRY

posted on May 5, 2008
17. ## spell

I LIKE TO SPELL RIGHT BUT I CAN`T SPELL IT RIGHT.NOW I WANT YOU HELP ME OKAY,AND I WANT TO STUDY WITH YOU...PLEASE.I WANT TO SCORE A FOR ENGLISH SUBJECT.

posted on May 5, 2008