# Posts by Keonn'a

Total # Posts: 65

1. ### Math

According to the Department of Health and Human Services, 30% of 18- to 25-year-olds have some form of mental illness. (a) What is the probability two randomly selected 18- to 25-year-olds have some form of mental illness? (b) What is the probability six randomly selected 18...
2. ### Statistics

Teen Communication The following data represent the number of different communication activities (e.g., cell phone, text messaging, e-mail, Internet, and so on) used by a random sample of teenagers over the past 24 hours. (a) Are the events “male” and “0 ...
3. ### Statistics Math

. Drawing a Card Suppose that a single card is selected from a standard 52-card deck. What is the probability that the card drawn is a club? Now suppose that a single card is drawn from a standard 52-card deck, but we are told that the card is black. What is the probability ...
4. ### Math

. According to the U.S. Census Bureau, the probability that a randomly selected head of household in the United States earns more than $100,000 per year is 0.202. The probability that a randomly selected head of household in the United States earns more than$100,000 per year...
5. ### Statistics

. According to the U.S. Census Bureau, the probability that a randomly selected head of household in the United States earns more than $100,000 per year is 0.202. The probability that a randomly selected head of household in the United States earns more than$100,000 per year...
6. ### Statistics

Suppose that suppose that e and f are two events and that p(e)=0.8 and p(f/e)=0.4. what is p(e and f)?
7. ### Statistics

Which Professor? Suppose Professor Alpha and Professor Omega each teach Introductory Biology. You need to Decide which professor to take the class from and have just completed your introductory statistics course. Records obtained from the past students indicated that students ...
8. ### Statistics

Find the range population of Ethan and the population standard deviation Ethan: 9, 24, 8, 9, 5, 8, 9, 10, 8, 10
9. ### Math

where do I start I am lost?
10. ### Math

In December 2010, the average price of regular unleaded gasoline excluding taxes in the United States was $3.06 per gallon, according to the Energy Information Administration. Assume that the standard deviation price per gallon is$0.06 per gallon to answer the following. (a) ...
11. ### Math

I am sorry not trying to take up your time can you please help me understand the problem
12. ### Math

The Empirical Rule: The weight,in the grams, of the pair of kidneys in adult males the ages of 40 and 49 has a bell-shaped distribution with a mean of 325 grams and a standard deviation of 30 grams. A) About 95% of kidney pairs will be between what weights? B)What percentage ...
13. ### Math

write the slope intercept form of the equation of the line with the following conditions. 19. passing through (4,-2) and (-8, -5). 21. passing through (-5,9) and parallel to 3x+y=1. 23. passing through (4,1) and perpendicular to 2x-y=8.
14. ### Statistics

Graph neatly and label all intercepts. -x+2y=5 x intercept x=0 -0+2y=5 +0 +0 -------- 2y/2=5/2 y=5/2 y intercept y=0 -x+2(0)=5 -x+0=5 -x-0=5 x=-5
15. ### Algebra

Find the equation of the circle on the y-axis and has y-intercept at 1 and 7.
16. ### College Algebra

The fox population in a certain region has an annual growth rate of 9% per year. In the year 2012, there were 20,700 foxes counted in the area. What is the fox population predicted to be in the year 2020? Round to the nearest fox. #Foxes
17. ### College Algebra

Suppose an investment account is opened with an intial deposit of $12,000 earning 9.6% interest. Round all answers to the nearest dollar. a. How much will the account be worth after 20 years if it is compounded monthly?$ b. How much will the account be worth after 20 years if...
18. ### College Algebra

Graph the exponential function. f(x)=(1/2)^x
19. ### College Algebra

Graph the exponential function. f(x)=4^x Clear All Draw: Exponential.
20. ### Algebra

Factor completely. (m+n)^3-27 a=m+n b=3 (m+n-3)[(m+n)^2+3(m+n)+3^2] m^3 +3m^2n +3mn^2 +n^3-9 Is this right?
21. ### Algebra

Factor completely (x-2/3)^2-16(x-2/3)+63
22. ### Algebra

The maximum load a beam will support varies directly with the square of the diagonal of the beam's cross section.A beam with diagonal 6 inch will support a maximum load of 108 pounds. What load will a beam with a 10 inch diagonal support?
23. ### Algebra

Let f(x)= 2/3x^2-3/2x+5/7 and G(x)=1/3x-2/5. (fg)(x)
24. ### Algebra

Rationalize the denominator. frac{4}{\sqrt[3]{100x}}
25. ### Algebra

Simplify. Complex Fractions. b-2b/b+3/1/b+3+1/b-3= LCM: (b+3)(b-3)
26. ### Algebra

Complex Fraction. Simplify. x-5x/x+6/1/x-6+1/x-6
27. ### College Algebra

let x=the width then x+4 = the length x+4+x=12
28. ### College Algebra

The area of a rectangular carpet is 12 square feet. The length is four feet more than the width. Find the length and the width of the carpet.

For the function f(x)=x^2?7x+5 find x when f(x)=?5 x=

16y^3+48y^2=-36y I need help setting up the problem.

Is this a great start: 10x^2+5x=-5 +5 +5 10x^2+5x+5=0 10(x+5)(x+1)=0 10=0 x=5 x=-1

Solve. 10x^2+5x=-5
33. ### Algebra

Factor completely using difference of squares. x^2-12x+36-64y^2
34. ### Intermediate Algebra

Factor completely using difference of squares. x^2-12x+36-64y^2
35. ### Math

Graph the solution set for the linear inequalities. y<4x+2 2x?y?2
36. ### Math

Graph the solution set for the linear inequalities. 2. x+yâ‰¤4 2xâˆ’yâ‰¥2 3. y<4x+2 yâ‰¥4xâˆ’4
37. ### College Algebra

Solve the system. 2x+9y=4 6y-2z=1 -4x+4z=0
38. ### Math

Three even numbers sum up to 126. The smaller is half the larger and the middle number is 3/4 the larger. What are the three numbers (list in order from smallest to largest).
39. ### College Algebra

Solve the system. 1/4x+1/3y+1/2z=-7/12 1/3x+2/3y+1/4z=-17/3 1/2x-1/3y+2/3z=19/6

42. ### College Algebra

The Jones family took a 24-mile canoe ride down a river in two hours. After lunch the return trip back up the river took four hours. Find the rate of the canoe in still water.
43. ### Algebra

Find an equation of a line perpendicular to the given line and contains the given point. Write the equation in slope-intercept form. a. line 3x+y=5, point (-1,2) b. line y=3x+1, point (6,1)
44. ### Algebra

Find an equation of a line parallel to the given line and contains the given point. Write the equation in slope-intercept form. a. line 2x+3y=2 , point (0,0) b. line y+4=0, Point (-5,3)

49. ### Geometry

While on a tour in Greece, Tatyanna saw that temperature was 5? celsius. Solve for F? in the formula. C= 5/9 (F-32)
50. ### Geometry

The perimeter of a rectangle is 192 feet. The length of the rectangle is twice the width. Find the length and width of the rectangle.
51. ### Algebra 1

A grocery store reduced the price of a loaf of bread from $3.20 to$3.09. Find the percent change (discount rate). Round to the nearest tenth of a percent.
52. ### Algebra 1

A grocery store reduced the price of a loaf of bread from $3.80 to$3.67. Find the percent change (discount rate). Round to the nearest tenth of a percent.
53. ### College Algebra

Use the quadratic formula to solve the equation: 2x^2=-5x-7
54. ### College Algebra

A projectile is thrown upward so that it's distance (in feet) above ground after t seconds is given by h(t)=-10t^2+440t. What is its maximum height?
55. ### College Algebra

A ball is projected upward from the ground. Its distance in feet from the ground in t seconds is given by s(t) = -16t^(2)+128t At what times will the ball be at 213ft from the ground?
56. ### College Algebra

The height of an object launched from the ground after t seconds is given by h(t)=-16t^2+32t. How long for the object to obtain a height of 32ft. Hit the ground.
57. ### Help College Algebra

A ball is projected upward from the ground. Its distance in feet from the ground in t seconds is given by s(t) = -16t^(2)+128t At what will the ball be at 213ft from the ground?
58. ### College Algebra

The height of an launched from the ground after t seconds is given by h(t)=-16t^2+32t. How long for the object to obtain a height of 32ft. Hit the ground?
59. ### College Algebra

v=1/3*3.14r^2h for r
60. ### Algebra

d=kt^2 solve for t
61. ### Algebra

v=1/3*3.14r^2h for r
62. ### Algebra

A computer screen measures 14 in. by 11 inches. Find the length of the diagonal.
63. ### Algebra

The height of an launched from the ground after t seconds is given by h(t)=-16t^2+32t. How long for the object to obtain a height of 32ft. Hit the ground?