1)Find the sixth term of the geometric sequence for which a1=5 and r=3 A)1215 B)3645 C)9375 D)23 I chose A 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3... A)aN=-12(1/3)n-1 B)aN=12(-1/3)n-1 C)aN=-12(-1/3)-n+1 D)aN=-12(-1/3)n-1 I chose C 3)Find

93,362 questions, page 729
1. maths

A tree broke from a point but did not separate. If the point from where it broke is 7 m above the ground and its top touches the ground at the distance of 24 m from its foot, find out the total hieght of the tree before it broke.

asked by naina on January 11, 2010
2. Physics

A steel measuring tape is calibrated at 20 degrees Celsius. A reading of 32.10m is measured when it is used to find the length of a building. If the temperature is 5degrees Celsius, what is the actual length of the building at that temperature? The

asked by Hannah on October 6, 2008
3. Maths help

Hi MY question is if a cylinder has a volume of 72cm cubed and a cross-sectional area of 18cm squared. Work out the height of the cylinder Can someone show me how we do it by the steps The cross-section of a cylinder is a circle. so pi(r)^2=18 solve for r

asked by Ali on April 23, 2007
4. precalculus

Find (a) the equation of a line that is parallel to the given line and includes the given point, and (b) the equation of a line that is perpendicular to the given line through the given point. Write both answers in slope-intercept form. (c) Graph both of

asked by tinathomas on November 11, 2011
5. math

A thrill ride at an amusement park holds a maximum of 12 perople per ride. write and solve an inequality to find the least number of rides needed for 15,000 people. Do you think it is possible for 15,000 people to ride the thrill ride in 1 day? explain

asked by Aargh on March 23, 2017
6. plane and trigonometry

a 30 foot flagstaff is fixed in the center of a circular tower 40 feet in diameter. from a point in the same horizontal plane as the foot of the tower the angles of elevation of the top of the flagstaff and the top of the tower is 30 degree repectively.

asked by rhen songalia on July 16, 2013
7. EW! GRAMMAR!

Can someone help me find GOOD pratice tests for Prepositional phrases, Participial phrases, gerunds phrases, infinitive, appositive, adjective phrase, adverb phrases, main clause, subordinate clause, complex clause and compound complex clause Thanks!

asked by Chopsticks on February 17, 2009
8. math

Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your

asked by Vanessa on April 5, 2014
9. math

A movie theater seats 500 people. For any particular show, the amount of money the theater makes is a function m(n) of the number of people, n, in attendance. If a ticket costs 2 dollars, find the domain and range of this function. domain: ?≤ n ≤?

asked by sara on September 3, 2011
10. statistics

The number of cars sold annually by used car salespeople is normally distributed with a standard deviation of 18. A random sample of 310 salespeople was taken and the mean number of cars sold annually was found to be 71. Find the 94% confidence interval

asked by lupita on May 9, 2012
11. math

Ben is to invest \$13 000 for 3 years at 8% p.a with interest paid annually. Find the amount of interest earned by calculating the simple interest for each year separately. I know how to solve this using the normal method, but i don't know how to do it by

asked by help on May 9, 2016
12. chemistry

What is the de Broglie wavelength in nm of a buckyball, (molecular formula C60), moving at speed 250 m/s? I don't understand how you find the mass from the molecular formula C60. The answer is 2.2*10^-3nm. I tried multiplying the mass of carbon by 60, but

asked by Liana on October 30, 2012
13. history

What were the 2 most valued possessions of the pioneers that owned the conestoga wagon? You may be able to find your answer in this site, although I didn't see anything about most valued possessions. http://www.answers.com/topic/conestoga-wagon I would say

asked by Mack on April 29, 2007
14. Physics

A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the

asked by Rachel on February 20, 2013
15. statistics

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 410 grams and a standard deviation of 10 grams. Find the weight that corresponds to each eventa. A.Highest 30 percent b. Middle 70 percent to c. Highest 90

asked by MD on April 7, 2013
16. physics

A 0.46 kg mass is attached to a spring with a spring constant of 145 N/m so that the mass is allowed to move on a horizontal frictionless surface. The mass is released from rest when the spring is compressed 0.14 m. Find the acceleration of the mass at the

asked by a on February 3, 2016
17. Math

If an observer stands at a certain point in the same horizontal plane as the base of a radio tower. the angle of elevation of the top of the tower is 13deg 15'. If the observer moves 156.25 feet towards the tower, the angle of elevation is 18deg 10'. Find

asked by McKenna Louise on February 17, 2014
18. Math

Your long distance telephone providers offers two plans.Plan A has monthly fee of \$15 and \$0.25 per minute. Plan B has a monthly fee of \$20 and \$0.05 per minute.Write and solve an equation to find the number of minuts that you must talk to have the same

asked by Lara on September 18, 2016
19. science

On a particular day, the following appliances are used for the times indicated: coffee maker, 40 min, and microwave oven, 23 min. Using the power requirements given in the table below, find how much it costs to use the appliances at an electrical cost of

asked by ashley on September 3, 2010
20. Algebra

A fisherman traveled in a boat from point N upstream. After having traveled 6 km, he stopped rowing and 4 hour 30 min after first leaving N, he was brought back to N by the current. Knowing that the speed of the boat in still water is 90 km/hour, find the

asked by Chris Cook on April 30, 2016

Suppose a publishing company has found that the marginal cost at a level of production of x thoudsand books is given by: C'(x)=50/sqrroot(x) and the fixed cost is \$25,000. Find the cost function C(x). C= INT C'= INT 50/sqrtx= 100 sqrtx + F where F is the

asked by Sara on December 4, 2006

f(x)=2x^3-x^2+1 [1,4]=interval Set up the limit process (once with right endpts, and the other with left entdpts.) to find the area under the curve and above the x-axis on the given interval Should the right and left endpt limit set ups have the same area?

asked by Kajal on May 28, 2011
23. math

A rectangular play yard is to be constructed along the side of a house by erecting a fence on three sides, using house wall as the fourth wall. Find the demensions that produce the play yard of maximum area if 20 meters of fence is available for the

asked by fifi on September 19, 2011
24. Math

he wholesale cost of a delivery van is \$31,300. The original markup was 26% based on selling price. Find the final sale price after the following series of price changes: a markup of 46%, a markup of 15%, a markdown of 40%, and a markup of 14%. (Round each

asked by Helen on August 2, 2017
25. college physics help please...

The location of the center of mass of the partially eaten, 11 inch diameter pizza (r = 5.5) shown in Figure 9-20 is Xcm = -1.1 in. and Ycm = -1.1 in. Assuming each quadrant of the pizza to be the same, find the center of mass of the uneaten pizza above the

asked by sally on October 19, 2008
26. physics

A proton that has a mass m and is moving at 250 m/s in the + direction undergoes a head-on elastic collision with a stationary oxygen nucleus of mass 16m. Find the velocities of the proton and the oxygen nucleus after the collision i know i have to

asked by CLUELESS on May 6, 2012
27. physics

a person holds a 5 kg mass in his hand. the forearm is held 45 degrees below the horizonal. the biceps muscle isa attached 5cm from the elbow ad th eight is held 35 cm from the elbow. neglecting mass of the forearm find the tension in the bicep muscle.

asked by cinthia on May 14, 2011
28. math

Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your

asked by vanessa on April 7, 2014
29. Math

The table shows information about the number of sweatshirts sold and the money collected at a fundraiser for school athletic programs. Sweatshirts Sold 3 5 8 __ 12 Money Collected 60 _ _ 180 _ The above is supposed to be a ratio table but I am not sure on

30. physics

a 230v/30v with 50Hz transformer that has a primary current of 0.6A which supplys number of 30v and 30 watts halogen light bulb. find the maximum number of bulb can operate. assume that its an ideal transformer and can operate within its rated value.

asked by mike on December 12, 2018
31. Algebra 2

An archer releases an arrow from a shoulder height of 1.39 m. When the arrow hits the target 18 m away, it hits point A. When the target is removed, the arrow lands 45 m away. Find the maximum height of the arrow along its parabolic path. My points are

asked by Lenny on December 5, 2013
32. Physics

a 230v/30v with 50Hz transformer that has a primary current of 0.6A which supplys number of 30v and 30 watts halogen light bulb. find the maximum number of bulb can operate. assume that its an ideal transformer and can operate within its rated value.

asked by Mike on December 12, 2018
33. ap stats need help

Continuous Random Variable, I Let X be a random number between 0 and 1 produced by the idealized uniform random number generator described. Find the following probabilities: a.P(0¡ÜX¡Ü0.4) b.P(0.4¡ÜX¡Ü1) c.P(0.3¡ÜX0.5) d.P(0.3(

asked by chris on March 10, 2009
34. phyical science

On a particular day, the following appliances are used for the times indicated: coffee maker, 40 min, and microwave oven, 23 min. Using the power requirements given in the table below, find how much it costs to use the appliances at an electrical cost of

asked by ashley on September 3, 2010
35. Math & Chemistry

I having problems converting my answer to just cm. Given: Average Velocity = 1 m/s Water per day = 6,000 m^3/day Want to find the diameter of fluid flow. I am using the equation: D = sqrt(4*q)/(pi*v) q= volumetric flow rate (6,000 m^3/day) v= velocity (1

asked by Angel on September 13, 2012
36. Chemistry

How many grams of oxygen are collected in a reaction where 247 mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr? And would i just convert 697 torr into atm and use that for pressure? And how do i find the

asked by Olivia on February 18, 2013
37. Math

Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your

asked by Vanessa on April 7, 2014
38. economics

suppose we established a \$10,000 fine for water pollution. Would some companies still find that polluting was economical? Under what conditions? If the cost of correcting the cause of the water pollution were more than \$10,000, then a company might believe

asked by Kayla on March 13, 2007
39. science

The following forces are acting at a point. 1)450N force towards north-east. 2)350N force towards east. 3)250N force at 30º west of north. 4)300N force at 60º south of west. Find magnitude and direction of the resultant

asked by ishaq on July 1, 2019
40. Trig

a ships navigator determines that the ship is moving through the water at 17.5mi/h with a heading of 26.3 degrees north of east but the ship is actually moving at 19.3 mi/h in a direction of 33.7 degrees north of east. What is the velocity of the current?

asked by Erica on December 1, 2014
41. Math

An investment of \$27,000 was made by a business club.The investment was split into three parts and lasted for 1 year.The first part earned 8% interest,the second 6% and the third 9%.total interest from the investment was \$2130.the interest from the first

asked by Anna on October 25, 2018
42. algebra

height of a projectile thrown straight up from top of 480 ft hill t seconds after bing thrown up with initial velocity vo ft/s is h = -16t^2 +vot + 480 If vo = 96, find times when the projectile will be at a) height of 592 ft above the ground and b) crash

asked by Nilan on October 10, 2011
43. math

65 men 75 women are enfolled in calculus. There are 30 business majors, 40 biology majors, 50 computer science majors, and 20 mathematics majors. No person has a double. If a single calculus student is chosen, find the probability that that the student is

asked by greg on September 28, 2012
44. math

A hardware store makes a profit of \$41,000 during its first year. The store owner sets a goal of increasing profits by \$9000 each year for 4 years. Assuming that this goal is met, find the total profit during the first 5 years of business.

asked by dan on May 14, 2018
45. physics

Three objects -- two of mass m and one of mass M -- are located at three corners of a square of edge length l. Find the gravitational field g at the fourth corner due to these objects. (Express your answers in terms of the edge length l, the masses m and

asked by mary on April 16, 2011
46. math

18. Exponential growth follows the formula y= a(1+r)^x and exponential decay follows the formula y= a (1-r)^x. False? 23. In controlled experiments, the researcher is able to find a casual relationship between the variables- True 27. The explanatory and

asked by mysterychicken on June 19, 2013
47. science research

for my science project i have a research project report due tomorrow. can somebody please help me find atleast three reseach web links that can help with what i am searching about, how does color effect taste preferences or does color effect taste

asked by shivangi on October 8, 2007
48. Math

My Question is : A plane with an air pf 192 miles per hour is headed on a bearing of 121 degrees. A north wind is blowing ( from north to south ) at 15.9 miles per hour. Find the ground speed and the actual bearing of the plane.

asked by Nat on May 18, 2008
49. physics

Three objects -- two of mass m and one of mass M -- are located at three corners of a square of edge length l. Find the gravitational field g at the fourth corner due to these objects. (Express your answers in terms of the edge length l, the masses m and

asked by mary on April 16, 2011
50. AnyBody Help :)

Draw A Line With 3 Distinct Points On It. Label Each With A Different Letter. How Many Different Rays Can You Name Using Only The Three Given Points ? 1) 8 2) 6 3) 4 4) 2 The Measures Of Two Angles Of A Triangle Are 36* And 71* . Find The Measure Of The

asked by 6ix9ine on February 1, 2018
51. physics

in every minute a pump draws 6 metric cubed of water from a well and issues it at a speed of 5 meters per second from the nozzle situated 4 meters above the level from which the water was drawn. find the average rate at which the pump is working. (1 metric

asked by ken on May 5, 2014
52. statistics

Sign in Assume that the mean score on a certain aptitude test across the nation is 100, and that the standard deviation is 20 points. Find the probability that the mean aptitude test score for a randomly selected group of 150 8th graders is between 99.5

asked by m elissa on May 20, 2012
53. statistics

Suppose you agree to meet a friend(who is generally late) at a specified time. Assume that you arrive on time and let the random variable T be the length off time you must wait for your friend. If the density function for T is assume to be f(t)=1/t^2,

asked by Brooks on November 8, 2011
54. Math

Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your

asked by Vanessa on April 6, 2014
55. pre-calc

A hardware store makes a profit of \$41,000 during its first year. The store owner sets a goal of increasing profits by \$9000 each year for 4 years. Assuming that this goal is met, find the total profit during the first 5 years of business.

asked by allison on May 10, 2018
56. Math (Area formed by 3D coordinates)

Compute the area of the parallelogram formed by A(-2, 1, 4), B(0, -2, 3) C(-1, 6, 5), and D(1, 3, 4). So for this problem, do I turn the four points into two vectors with AD and BC and then take the cross product and then find the magnitude? Taking the

asked by Ray on November 12, 2017
57. math

A fisherman traveled in a boat from point N upstream. After having traveled 6 km, he stopped rowing and 2 hour 40 min after first leaving N, he was brought back to N by the current. Knowing that the speed of the boat in still water is 9 km/hour, find the

asked by yo on March 27, 2018
58. Math

The total amount being spent on personal calls in a month by employees of a company follows a normal distribution with a mean of \$900 and a standard deviation of \$50. Find the probability that in a randomly selected month the amount spent on personal calls

asked by Lori on April 17, 2010
59. Calculus

The altitude attained by a model rocket t seconds into flight is given by the equation: -t^3+3t^2+20t-3 where t is greater than or equal to 0 seconds. find the maximum altitude attained by the rocket. first I found the derivative of the original equation

asked by Michelle on October 12, 2015
60. physics

1) Mass m1 = 0.7 kg moves with constant velocity v1i = 2.0 m/s along the x-axis and collides with mass m2 = 1.8 kg, which moves with velocity v2i = 3.4 m/s, as sketched below. After the collision, m1 and m2 stick together. Find the angle, θ, between the

asked by Jim on October 13, 2012
61. physics

1) Mass m1 = 0.7 kg moves with constant velocity v1i = 2.0 m/s along the x-axis and collides with mass m2 = 1.8 kg, which moves with velocity v2i = 3.4 m/s, as sketched below. After the collision, m1 and m2 stick together. Find the angle, θ, between the

asked by Jim on October 13, 2012
62. Social Studies

Hello :) so basically my homework is about The Rise of African Civilization. It's Easy but I've looked everywhere in my textbook and can't seem to find it, so I'm going to write it out exactly why it says on my paper... How did the kingdoms in the rain

asked by Ellisyn Noelle on August 14, 2012
63. 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

asked by Pablo on December 2, 2010
64. hihhh

A car starts from rest and covers a distance of 22.0 m while accelerating at a constant rate of 2.6 m/s2. If the radius of the car wheels is 26.0 cm, what is the final angular speed (in rad/s) of the car wheels? Hint: If you're unsure where to start, think

asked by Anonymous on October 22, 2013
65. Physics

At sea level and 303 k, a rubber balloon is inflated with hydrogen gas to a diameter of 3.00 ft and an internal pressure of 16.7 lb/in scuared. Find the diameter of the balloon at an altitude of 30000 ft where the internal pressure is 6.4lb/in scuared and

asked by Esther on June 2, 2013
66. Calculus

Find f'(c) if f(x)=-3e^(x+2)+ e^(-5) [NOTE:A small algebraic manipulation is needed first to get f(x) into a form so that the derivative can be taken and your answer isn't a # but rather a formula that returns and answer.] attempt at the problem:

asked by engmath on February 9, 2010
67. Chemistry

determine the approximate molarity of a solution of NaOH prepared by diluting 10ml of 6M NaOH to a volume of 400 ml. using the solution in the first part, 24.5ml of NaOH solution was required to neutralize 26.4ml of a .150M HCl solution. find the molarity

asked by Chuck on February 28, 2008
68. math

A fisherman traveled in a boat from point N upstream. After having traveled 6 km, he stopped rowing and 2 hour 40 min after first leaving N, he was brought back to N by the current. Knowing that the speed of the boat in still water is 9 km/hour, find the

asked by Sarayu on March 12, 2018
69. Bio Question

I've tried to find the answer to this question everywhere and don't seem to be having any luck, please help! Most of the dry weight of a plant is the result of uptake of A. water and minerals through root hairs B. water and minerals through mycorrhizae C.

asked by MK on April 6, 2009
70. trigonometry

two pieces of wire stretched from the top, M of a vertical pole to the points L and N on the horizontal ground. the angle of depression of L from N =65 degrees. N is on the opposite side of the pole(from left)at an angle of depression of 72 degrees from M.

asked by lindsay on April 23, 2012

A. The GPAs of all 5540 students enrolled at a University have an approximately normal distribution with a mean of 3.02 and a standard deviation of 0.29. Let x be the mean GPA of a random sample of 48 students selected from this University. Find the mean

asked by DON on May 17, 2013
72. Math

What's the value of the missing angle *picture of a triangle and square put together which basically makes a hexagon. angles are 90 degrees, 90 degrees, 130 degrees, 130 degrees. I have to find the last angle.* A. 50 degrees B. 60 degrees C. 100 degrees D.

asked by Anonymous on February 5, 2015
73. science

(A) The following forces are acting at a point. 1)450N force towards north-east. 2)350N force towards east. 3)250N force at 30º west of north. 4)300N force at 60º south of west. Find magnitude and direction of the resultant

asked by riyas saidkkannu on June 25, 2019
74. Physics

A 1130 kg -car is being pulled up a frictionless ramp at a constant speed. The cable makes an angle of 31.0 degrees above the surface of the ramp, and the ramp itself rises at 25.0∘ above the horizontal. Find the tension in the cable. How hard does the

asked by Vick on October 29, 2017
75. Physics

A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the

asked by Rachel on February 19, 2013
76. physics

A spring cannon is located at the edge of a table that is 1.70 m above the floor. A steel ball is launched from the cannon with speed v0 at 25.0° above the horizontal. (a) Find the horizontal displacement component of the ball to the point where it lands

asked by Anonymous on February 16, 2011
77. Physics

A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the

asked by Rachel on February 19, 2013
78. college algebra

A limousine service charges  \$20  plus  \$0.50  per mile and a taxicab company charges  \$1.50  per mile. Write and graph a system of equations for the cost of each ride, find the number of miles for each ride to cost the same, and determine

asked by mako on February 5, 2015
79. Math

1. Write 6.34 x 10 to the third power in a standard form. 2. Secondly, Find the amount of rain the state of North Carliona receives each year? About how much rain falls per month? How does North Carliona's monthly rainfall compare with the monthly rainfall

asked by Kim248Jackson on December 2, 2010
80. math

how do I find how many times greater ? 9x10 to the 8 power is how many times greater than 3x10 to the 7 power?

asked by aj on December 9, 2015
81. Calculus

Find limit as x approaches 1 5/(x-1)^2 A. 0 B. Negative infinity C. 5/4 D. Infinity If I use limit as h approaches 0 f(x+h)-f(x)/h , will I get an x in the answer?

asked by Anonymous on November 30, 2014
82. Trigonometry

Suppose sin A = 12/13 with 90º≤A≤180º. Suppose also that sin B = -7/25 with -90º≤B≤0º. Find tan (A – B).

asked by TeeKay on October 15, 2014
83. math

The area of a triangle is 66 m2, and its base is 1 m more than the height. (See the illustration.) Find the base and height of the triangle.

asked by anonymous on September 26, 2018
84. math

find tan 30 degrees and tan 45 degrees using the 45-45-90 triangle therom and 30-60-90 triangle theorm

asked by joan on March 25, 2013
85. Math

I can't find the integral for (tanx)^(6)*(secx)^(2) I tried splitting up tanx into (tanx)^2*(tanx)^4 and let the latter equal (secx)^2 - 1. Please help, thanks!

asked by Anonymous on February 15, 2013
86. college

The width of a rectangle is 25% of the length. The perimeter is 250 cm. Find the width and the length of the rectangle.

asked by Bianca on April 11, 2011
87. Algebra 1

The length of a rectangle is 4 cm more than the width. The area of the rectangle is 77 cm squared. Find the width and length. A) 7 cm, 11 cm B) 4 cm, 8 cm C) 6 cm, 8 cm D) 6 cm, 10 cm

asked by Alex on January 31, 2014
88. math

the larger of two numbers is 6 more than 4 times the smaller. if the smaller number is one-fifth of the larger, find both numbers

asked by meep on July 9, 2012
89. maths

radius is 4.5 cm and height 21 cm is cut into a cone of height 14 cm . find the radius of the smaller cone

asked by saran on October 14, 2016
90. english(letter of inquiry)

I would like to know how to write a letter of inquiry. What are some websites where I can find samples of letter of inquiry? What should I write?

asked by mic_ on June 30, 2009
91. sports math

There are many ways to add any numbers 3,5,7,9,11, and 12 to get a sum of 20. Numbers may be repeated.One way to get a sum of 20 is 9+5+3+3. Find four other ways.

asked by Am on November 1, 2010
92. CALCULUS help please

Find the following limit where f(x) = 4x^2 − 3x. limit-->(f(x+ delta x)-f(x))/(delta x) delta x **delta x means the triangle symbol with x next to it***

asked by kunti on September 26, 2011
93. maths

given the triangle ABC with BC=7cm AD=7cm and AD is the altitude of the triangle find the area of ∆ABC?

asked by Don Morris on September 7, 2019
94. Science

Mass of ice is 0.015 kg and that of water is 0.05 kg. Both are at 0°C. Find the final mass of ice and water.

asked by Debarati on December 28, 2016
95. Math

Find the equation of the line that passes through (-5,4) and (6,4) My work: M= 4-4/6+5 = 0/11 y=mx+b 4= 0(6) + b 4=b Y=4 Therefore, the equation of the line that passes through (-5,4) And (6,4) is y=4 Was this done correctly?

asked by ashley on February 19, 2015
96. Math

Find the vertex, focus and directrix of the parabola. 4x - y^2 - 2y - 33 = 0 y^2+2y+1 = -4x+33+1 (y+1)^2 = -4(x+8.5) vertex:(-1,-8.5) focus:(-2,-8.5) Directrix: x=0 Is this correct?

asked by Abbey on May 4, 2010
97. Math

the sum of two numbers is 21 five times the first number added to 2 times the second number is 66 find the two numbers

asked by Anonymous on October 20, 2016
98. Microeconomincs

Find an article that deals with business impact on the environment. and i want to know what does business impact on the environment mean?

asked by mike on November 28, 2010
99. Math, Statistics

If P(A)=.3 and P(B)=.45 find… P(A or B) if A and B are 1)mutually exclusive & 2)independent. Also, I need help understanding what independent and mutually exclusive means and what that does.

asked by Jillian on January 24, 2017
100. mathematics

If 3xy^3 - 4x = 10y^2, find y ' (x) a) (4 + 3y^2)/(9xy^2 + 20y) b) (4 - 3y^2)/(9xy^2 - 20y) c) (3 + 4y^2)/(20xy^2 + 9y) d) (3 - 4y^2)/(20xy^2 - 9y)

asked by Donna on May 11, 2008