Posts by K
Total # Posts: 1,046

Second solution for ambiguous case?
Given a = 31.5, b = 51.8, A = 33 degrees, find the value of c in triangle ABC. bsinA = 51.8sin33 = 28.21 > bsinA < a < b so there are two solutions Using sine law: sinB/b = sinA/a sinB/51.8 = sin33/31.5 sinB = 51.8 * sin33/31.5 sinB = 0.895628635 B = arcsin(0.... 
Math
thanks 
Math
Question : find (h,k) and radius x^2 + y^2 +1/2x + 2y +1/16 = 0 According to the equation : (x?h)^2+(y?k)^2 = r^2 x^2 + y^2 +1/2x + 2y +1/16 = 0 (x^2+1/2x+1/16)+(y^2+2y+1)=?1/16+1/16+1 (x+1/4)^2+(y+1)^2=1 so (h,k) = (1/4, 1) and r = 1 theres no answer to even number from the... 
Math
A car traveling from town A to town B at an average speed of 80 km/h took 54 minutes. Another car took 40 minutes to travel the same distance. What was the difference in their speed in km/h? 
chemistry / science
With regard to Stainless Steels, how is a passive layer regenerated? thanks in advance!! 
math
An Artisan has 63 kg of metal of density 7,000kg/m3. He intends to use make a rectangular pipe with external dimensions 12 cm by 15 cm and internal dimensions 10 cm by 12 cm. Calculate the length of the pipe in meters. 
math
Manyatta Village is 74 km North West of Nyangata Village. Chamwe village is 42 km west of Nyangata. By using an appropriate scale drawing, find the bearing of Chamwe from Manyatta. 
math
The angle which the tangent to the curve at the point (2, 5) makes with the horizontal 
Math
The Position of two A and B on the earth’s surface are (36°N, 49°E) and (36°N, 131°W ) respectively. (a) The difference in long between town A and town B (2 marks) (b)) Given that the radius of the earth is 6370, calculate the distance town A and town B. (... 
math
Find the reciprocal of 0.342. Hence evaluate:(?0.0625/0.342) 
Chem  Redox rxn
Just wanna make sure, if i did it correct or not. Cl2 + 2NaBr > Br2 + 2NaCl (0)(+1)(1)(0)(+1)(1) So Cl2 loss = oxidation Br2 Gain = Reduction Am I correct ? Thanks 
Math
The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm the diameter is 2 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of the smaller cone ... 
Math
The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm the diameter is 2 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of the smaller cone ... 
Math
Height = 12  2 = 10 Cylindrical part = 12  2 = 2 
Math
The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm the diameter is 2 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of the smaller cone ... 
Chemistry
A 50.0 ?mL sample of 1.50×10?2 M Na2SO4(aq) is added to 50.0 mL of 1.23×10?2 M Ca(NO3)2(aq). What percentage of the Ca2+ remains unprecipitated? Calculate the moles of Ca(NO3)2 you have (concentration * volume in L). Moles of Ca(NO3)2 = moles of Ca+2 per the ... 
Chemistry
A possible reaction for converting methanol to ethanol is CO(g)+2H2(g)+CH3OH(g)?C2H5OH(g)+H2O(g) ?H0 for this reaction at 25?C. ?H0 = 165.7 kJ ?S0 for this reaction at 25?C. ?S0 = 227.4 J/K ?G0 for this reaction at 25?C. ?G0 = 97.9 kJ  Estimate Kp for the reaction at 740 K... 
Math
The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of the smaller cone that was cut off to make... 
Math
Two shopkeepers, Juma and Wan bought some items from a wholesaler. Juma bought 18 loaves of bread, 40 packets of milk and 5 bars of soap while Wan bought 15 loaves of bread, 30 packets of milk and 6 bars of soap. The price of a loaf of bread, a packet of milk and a bar of soap... 
Math
Two shopkeepers, Juma and Wan bought some items from a wholesaler. Juma bought 18 loaves of bread, 40 packets of milk and 5 bars of soap while Wan bought 15 loaves of bread, 30 packets of milk and 6 bars of soap. The price of a loaf of bread, a packet of milk and a bar of soap... 
math
Three factories Buka, Sakono and Rama produce sugar in one hundred kilogram bags daily. Buka produces three times as much as Rama. Sakono produced two times as much as Rama. If Sakono produces 500 bags, how many tones altogether do three factories produce daily? Rama = r Buka... 
Chemistry  acid base
You are asked to bring the pH of 0.500 L of 0.450 M NH4Cl to 7.00. 12.0 M NH3 How many drops (1 drop 0.05 mL) of this solution would you use? What I did, but its incorrect Using HH equation I found out NH4 pKa = 9.24 from table pH = pKa + log [A] / [HA] 7.00 = 9.24 + log [NH3... 
Chemistry  acid base
Okay I'll try. Thanks for your time 
Chemistry  acid base
There isn't Ksp given in the question. What to do? 
Chemistry  acid base
A 50.0 mL sample of 1.50×10?2 M Na2SO4(aq) is added to 50.0 mL of 1.23×10?2 M Ca(NO3)2(aq). What percentage of the Ca2+ remains unprecipitated? What I did n=CV Na2SO4 = (1.50×10?2 M)(0.05L) = 0.00075 Ca(NO3)2 = (1.23×10?2 M)(0.05L) = 0.000615 0.00075  ... 
Chemistry  acid base
What volume of 10.0 M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCl? ( Tris. At 25 ?C, Tris has a pKb of 5.91 ) a) The buffer from Part A is diluted to 1.00 L. To half of it (500. mL), you add 0.0250 mol of hydrogen ions without changing the ... 
Math
The two legs of a right triangle are in the ratio ?3/2. If the hypotenuse is 10 units long, find the area (in square units) of the triangle. Please provide COMPLETE solution and FINAL ANSWER. 
Math
The two legs of a right triangle are in the ratio ?3/2. If the hypotenuse is 10 units long, find the area (in square units) of the triangle. 
PreAlgebra
Ok i understand i am stuck on this question If m<1 = 53, what is m<4? 53 43 37 27 If m<4 = 25, then what is m<8? 105 75 175 25 
PreAlgebra
Hi has anyone done lesson 10: Geometry Unit Test Essential Algebra Readiness (PreAlgebra) B Unit 1: Geometry i really need help has anyone done it please if u have please help!!!! 
PreAlgebra
Hi i need help with lesson 10: Geometry Unit Test Unit 1 1. Name a pair of complementary angles. 1 and 4 1 and 2 3 and 4 1 and 6 2. If m<1 = 53, what is m<4? 53 43 37 27 3. If m<1 55, what is m<5? 55 40 35 25 Please help me :( 
Chem
A sample of NH4HS(s) is placed in a 2.61 ?L flask containing 0.120 mol NH3(g). NH4HS(s)?NH3(g)+H2S(g) Kp=0.108 at 25?C Part A What will be the total gas pressure when equilibrium is established at 25?C? I'm getting P = 1.21atm which is wrong. Can any1 please help. Thanks 
Chem
A sample of NH4HS(s) is placed in a 2.61 ?L flask containing 0.120 mol NH3(g). NH4HS(s)?NH3(g)+H2S(g) Kp=0.108 at 25?C Part A What will be the total gas pressure when equilibrium is established at 25?C? I'm getting P = 1.21atm which is wrong. Can any1 please help. Thanks 
Math
the position vectors od points A and B woth respect to the original O, are (8,5)and (12,5) respectively. point M is the midpoint of AB and N is the midpoint of OA. Fin the coordinate of N and M; the magnitude of NM 
Math
Use mathematical induction to prove the property for all positive integers n. A factor of (n^3+3n^2+2n) is 3. 
Math
Multiply the numbers together. Area of rectangular prism = length x width x height 
Math
Multiply the numbers together. A of rectangle = length x width 
Math
Three factories Buka, Sakono and Rama produce sugar in one hundred kilogram bags daily. Buka produces three times as much as Rama. Sakono produced two times as much as Rama. If Sakono produces 500 bags, how many tones altogether do three factories produce daily? 
Math
Twenty members of a group contributed sh 80000 each to buy a piece of land. They already had sh 120000 in a bank out of which sh 20000 was to remain in the bank and the rest spent in buying the price of land. How much did the piece of land cost? 
Math
Twenty members of a group contributed sh 80000 each to buy a piece of land. They already had sh 120000 in a bank out of which sh 20000 was to remain in the bank and the rest spent in buying the price of land. How much did the piece of land cost? 
Math
Pupils in a school prepared a circular flower garden of diameter 28 meters. They dug holes each 4 meters apart along the circumference for planting flowers. How many holes were dug? 
math
The number of children at a film show was 49 more than that of adults . They entry fee for each child was sh 15 while that of each adult was sh 30. The total amount of money paid by the was sh 2055. How much money was paid by the children and the adults altogether? 
Math
Mwachia and Mbuu shared some money in the ratio 5:2. Mbuu received sh 30 less than Mwachia. How much money did Mbuu get? 
Math
A tailor made 48 pieces of uniform. Half of the number of the uniforms was each made using 1 1?4 meters of material. A quarter of the remainder was each made using 1 1?2 meters of material and the rest was each made using 1 3?4 meters of material. The tailor also fixed a logo ... 
Math
Lesson 10: Geometry Unit Test B Unit 1: Geometry 1.B 2.C 3.D 4.C 5.C 6.A 7.D 8.C 9.B 10.B 11.A 12.A 13.A 14.B 15.C 16.C 17.C 18.B 19.B I got a pretty bad grade so i just wanted to help u guys who were having trouble 
Government HELP
How are the first amendment rights seen in the constitution? Like how congress can't change religion 
Math
In a cupboard there are pencils, rulers and books. The number of pencils is 15 more than that of rulers. The number of books is three time that of rulers. If the number of pencils is p, which one the total number of items in the cupboard? 
math
What is the area of the region bounded by the xaxis and the lines x+y=24 and 3x2y=12? Please show full solution and explanation 
math geometry
A right circular cone has a base diameter of 10 and a height of 18. A second right circular cone has a base diameter of 15. If the volume of the second cone is equal to the volume of the first cone, then what is the height of the second cone? provide complete solution w ... 
math
God bless you Damon and I hope you have a lovely day! 
math
A right circular cone has a base diameter of 10 and a height of 18. A second right circular cone has a base diameter of 15. If the volume of the second cone is equal to the volume of the first cone, then what is the height of the second cone? 
math
The Southeastern Conference (SEC), has fourteen universities, each of which fields a football team. The football teams are divided into two seventeam divisions. Each season, every team plays every other team in its division once, and also plays two teams from the other ... 
math probability
Three cards are drawn at random without replacement from a standard fiftytwo card deck of playing cards. What is the probability that among the three cards there is a pair or three of a kind? please provide complete solution with explanations:) 
math
Ben can run six miles in fortyeight minutes. If Luke can run twenty percent faster than Ben, how many minutes will Luke take to run nine miles? Please provide COMPLETE solutions with explanation please 
Math (check answers)
1. Write the equation of a line in slope intercept form that is parallel to y = 3x  2 and passes through the point (2, 1) y = 3x5? 2. Write the equation of the line that passes through (2, 1) and is perpendicular to 5x + y = 9. x + 5y = 3? 
Math
3 each if there are 4 friends. 208 family members =12 cookies, so 12 divided by 4 friends is 3 each. 3*4=12 
MATH (HARD!)
Is it 3.6 + 4.2 Added these are 7.8 Mulitply by 1.5 to get. 11.7 Could be wrong but thats what i think 
Mathss
Item 20 A bathtub is draining at a constant rate. After 2 minutes, it holds 28 gallons of water. Three minutes later, it holds 7 gallons of water. Write an equation that represents the number y of gallons of water in the tub after x minutes. 
Chemistry
km 
Algebra: simplifying polynomials
Please simplify the following. Please show solution if possible:) Question 1: (x^3 + x^2  y^3  y^2) / (x^2  2xy + y^2) Question 2: (u^6 + v^6 + 2u^3 • v^3) / [u^3  v^3 + (u^2 • v)  (u • v^2)] 
History
How are religion and culture connected? (Essay) 
Chemistry
how'd you get 12.3 degrees C 
Chemistry
u know how to do the third one? 
Chemistry
12.3 degrees Celsius do we have the same lab? 
Math
Determine the number of factors of 5^x + 2•5^x+1. Choices: A) x B) x + 1 C) 2x D) 2x + 2 Please show solution:) 
Math
Thank you and God bless 
Math
Determine the number of factors of 5^x + 2•5^x+1. Choices: A) x B) x + 1 C) 2x D) 2x + 2 Please show solution:) 
math
Find the 6th term in the expansion (x^2  1/x)^25 It is a Binomial Theorem problem and I am extremely confused. Please and thank you! 
Surface area of threaded hollow tube
I have a question for calculating the surface area of a threaded cylinder,there are ten about 19 little threads in one inch, the rod is about 6 inches, the outer diameter is about 0.6 in and the inner diameter is 0.02. Each thread is 0.014 thick if that matters, I just have no... 
biology
In order to maintain homeostasis, human cells must have a higher concentration of sodium ions outside the cell than inside the cell. In addition, the concentration of potassium ions must be higher inside the cell than outside the cell. Which of the following forms of cellular ... 
English
Tickets 
English
"The sun was shining on the sea, Shining with all his might: He did his very best to make The billows smooth and bright — And this was odd because it was The middle of the night. The moon was shining sulkily, Because she thought the sun Had got no business to be ... 
Math geometry
1) The base angles of an isosceles triangle are (50x)^6 and (30x12)^6 what is the vertex angle? 2) The area of a trapezoid is 52cm^2 if it's bases are 8 cm apart find the sum of their heights 3) What is the area of a circle inscribed inside an equilateral triangle whose ... 
Social Studies
lesson 11: The Canadian Mosaic Social Studies 7 B Unit 1:Build a Regional Background: The U.S and Canada 1.A 2.D 3.A 4.C 5.C 6.C 7.A 8.C 9.C 10.D 
Math
How many positive integers, not having the digit 1, can be formed if the product of all its digits is 33750. With solution pls:) 
algebra
What is 7 more than five times the number 9 divided by 15? 
Math
K: 1) simplify: 1  1/2 + 1/4  1/8 + 1/16  1/32 2) Simplify: (1/2  1)  (1/3  1) + (1/4 1) 3) In the proportion x^2 : 27 = 9 : x^3, what is x? 4) Between what two consecutive integers does cube root of 100 lie? 5) What is the area of a rectangle whose sides are thrice as... 
Mathematics
2 people are in one red car 1 red car = 2 2 red cars = 4 1st blue car = 1 2nd blue car = 3 3rd blue car = 4 So 2+2+1+3+4 = 12 :) 
Social Studies
a b d correct 
Social Studies
oof yeah its correct 
math
Part of the road is to be on a parabolic curve given by a function of the form y = ax2 + bx + c where x and y are local coordinates. The road alignment must pass through the following 3 points: x = 150m y = 190.650m x = 300m y = 611.450m x = 450m y = 831.141m 5.1. Substitute... 
Math
yeah eyeless jack is right 
American Government
Thanks Ms. Sue! I only got one wrong, which was 6. 6 is A. 
American Government
I need help on my American Government quiz.. Not looking for answers but for someone to see if mine are right, and if not, to help me out. Thanks! 1. When categorizing the Executive Offices of the President, what can you assume when noting the number of departments devoted to ... 
Math
SOMEONE HELP ME 
Math
Key:8  3= 8.3 what does 72 mean in the same stem and leaf plot 
English
roasted 
Pre cal
Determine all xintercepts, vertical asymptotes, horizontal asymptotes, and removable discontinuities of f (x)=(x^2x6)/(x^34x). 
biology
If the first child of a couple was without dimples, an recessive trait, what is the chance that the second child will be born without dimples? A) 100% B) 25% C) 50% D) Cannot be determined from the phenotype of the child 
math
Calculate lim?(n??)??(?((n^2+n))?n) justify your answer. 
math
If lim?(n??)??(x_nx)/(x_n+x)?=0, prove that lim?(n??)??x_n ?=x. 
advanced math
A ladder is placed 4 ft from the side of a building. The top of the ladder must be 13 ft off the ground. What is the shortest ladder that will do the job? 4^2 + 13^2 = x^2 16+169=185^ =34,225 
Physics
idk 
physics
some rocks melt at 1800farenheit. what is the temperature in the celsius scale ? 
physics
Does the baby have feever ? 
physics
The normal temperature of the human body is 37Celsius. a baby temperature is 98farenheit. DOes the baby a fever? Why? 
physics
where did u get 12.53m/s 
physics
a 15kg rock falls from the top of a building 8.0 high. Find its PE and KE a.when at rest at the top of the building b. halfway down the ground c. when it reaches the ground d.speed when it reaches the ground 
physics
a man pushes a lawnmower 50ft in 5s by exerting a force of 30lb at an angle of 53degrees with the horizon. find the work done and the average power expended in horsepower. Answer Please need help 
physics
you can check if my answer is correct the work is 58.8J and power is 19.8watts ?