kd
Most popular questions and responses by kd
English
Which of the following phrases best describes the setting of the story?
asked on November 3, 2016 
CHEMISTRY
2BrF3(g)Br2(g) + 3F2(g) STANDARD ENTHALPY?
asked on November 20, 2015 
Math
What is the square root of the number obtained when 196 is multiplied by 4?
asked on December 29, 2018 
Math
The internal and external radii are estimated to be 6 cm and 8 cm respectively, to the nearest whole number. The height of the cylinder is exactly 14 cm. (a) Determine the exact values for internal and external radii which will give maximum volume of the
asked on November 7, 2018 
math
A two digit number is such that, the sum of its digits is 13. When the digits are interchanged, the original number is increased by 9. Find the original number.
asked on April 27, 2019 
math
salesman is paid a commission of 2% on goods sold worth over Ksh 100 000. He is also paid a monthly salary of Ksh 12 000. In a certain month, he sold 360 handbags at Ksh 500 each. Calculate the salesman earnings that month Total earned = salary +
asked on November 3, 2018 
Math
The base of a right pyramid is a rectangle of length 80 cm and width 60 cm. Each slant edge of the pyramid is 230 cm. Calculate the volume of the pyramid.
asked on April 28, 2019 
math
A wholesaler sold a radio to a retailer making a proﬁt of 20%. The retailer later sold the radio for Ksh 1560 making a proﬁt of 30%. Calculate the amount of money the wholesaler had paid for the radio.
asked on October 31, 2018 
Math
The lengths of three wires were 30m, 36 m and 84m. Pieces of wire of equal length were cut from the three wires. Calculate the least number of pieces obtained.
asked on April 27, 2019 
Math
find the two possible of x if 10sinx = 6 and 0
asked on May 5, 2019 
Math
Given that a*b = a + b + ab a) evaluate 3*5
asked on May 5, 2019 
Math
A photograph print measuring 24cm by 15 cm is enclosed in a frame. A uniform space of width x cm is left in between the edges of the photograph and the frame. If the area of the space is 270cm', find the value of x.
asked on April 27, 2019 
Math
a recipe used 2/3 cup of sugar for every 2 teaspoons of vanilla. how much sugar was used per teaspoon of vanilla?
asked on December 5, 2016 
math
A rectangular box open at the top has a square base. The internal side of the base is x cm long and the total internal surface area of the box is 432cm2. Express in terms of x. (i) the internal height h, of the box; (ii) the internal volume V, of the box.
asked on October 31, 2018 
Math
The distance covered by a moving particle through point O is given by the equation, s = t^3 15t^2+ 63t 10. Find: (a) distance covered when t = 2 (b) the distance covered during the 3rd second; (c) the time when the particle is momentarily at rest; (d)
asked on May 9, 2019 
math
find the two possible of x if 10sinx = 6 and 0
asked on May 5, 2019 
Math
A bag contains 3 black balls, 4 green balls and 5 yellow balls. a) if two balls are picked at random without replacement, find the probability that Botha balls are of the same color. b) How many black balls must be added to the bag so that the probability
asked on May 7, 2019 
Math
A school water tank is in the shape of a frustum of a cone. The height of the tank is 7.2 m and the top and bottom radii are 6m and 12 m respectively. (a) Calculate the area of the curved surface of the tank, correct to 2 decimal places. (b) Find the
asked on April 29, 2019 
Math
Find the integral values of y in the inequality 2y + 3 < 27 if y > 9
asked on May 7, 2019 
Math
Given that exterior angle of a regular hexagon is x, find the size of each interior angle of the hexagon. What is the correct answer for this question?
asked on September 19, 2018 
Math
Given that sin(x + 60) degree = cos(2x) degree, find tan(x + 60) degree.
asked on February 5, 2019 
math
A businessman makes a proﬁt of 20% when he sells a carpet for Ksh 36 000. In a trade fair he sold one such carpet for Ksh 33 600. Calculate the percentage proﬁt made on the sale of the carpet during the trade fair.
asked on October 30, 2018 
math
find the reciprocal of 0.0247, hence evaluate (3.025)^1/3))/0.0247 correct to 2 decimal places.
asked on May 3, 2019 
math
evaluate (sin 30°sin60°)/tan60°
asked on May 3, 2019 
math
Given that OA =( 2 3) and OB = (4 5). Find the midpoint M of AB.
asked on May 3, 2019 
math
A number m is formed by writing all the prime numbers between 0 and 10 in an ascending order. Another number n is formed by writing all the square numbers between 0 and 10 in a descending order. (a) Find m  n; (b) Express (m  n) as a product of its prime
asked on October 31, 2018 
math
Twenty ﬁve machines working at a rate of 9 hours per day can complete a job in 16 days. A contractor intends to complete the job in 10 days using similar machines working at a rate of 12 hours per day. Find the number of machines the contractor requires
asked on October 30, 2018 
math
cylindrical solid whose radius and height are equal has a surface area of 154cm2. Calculate its diameter, correct to 2 decimal places. (Take = 3.142)
asked on October 31, 2018 
math
A small cone of height 8 cm is cut off from a bigger cone to leave a frustum of height 16 cm. If the volume of the smaller cone is 160 cm'. find the volume of the frustum.
asked on October 30, 2018 
math
A cylindrical pipe 2 ½ metres long has an internal diameter of 21 millimetres and an external diameter of 35 millimetres. The density of the material that makes the pipe is 1.25 g/cm‘. Calculate the mass of the pipe in kilograms. (Take n = 22/7)
asked on October 30, 2018 
Math
the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. The size of ADC; The size of ACB; The area of the quadrilateral ABCD. tan ADC = 5/3 11^2 = 5^2+8^2  2*5*8 cos ACB Now you can figure the areas of the triangles ACD and ACB, and
asked on September 19, 2018 
math
The interior angles of an octagon are 2x, 1/2x, (x + 40)°, 110°, 135°, 160°, (2x + 10)° and 185°. Find the value of x.
asked on October 30, 2018 
Math
Given that the exterior angle of a regular hexagon is x, find the size of each interior angle of hexagon. so 6x 6x = 360 6x/6 = 360/6 x = 60 Is that correct?
asked on September 14, 2018 
Math
water flows from at 27 cubic centimeter per second, into a rectangular container of length 60cm, breadth 30cm and height 40 cm. if a 6:00pm the container was half full will be the height of water is at 6:04 pm?
asked on November 26, 2018 
math
A fruit vendor bought 1948 oranges on a Thursday and sold 750 of them on the same day. On Friday, he sold 240 more oranges than on Thursday. On Saturday he bought 560 more oranges. Later that day, he sold all the oranges he had at a price of Ksh 8 each.
asked on October 30, 2018 
Math
Given that the exterior angle of a regular hexagon is x, find the size of each interior angle of hexagon.
asked on September 11, 2018 
geometry
Lines BA and BC are opposite rays, Lines BD bisects angle EBC and Line BF bisects angle ABE. If the measure of angle EBD=4x+16 and the measure of angle DBC=6x+4 find the measure of ange EBD If the measure of angle ABF =7x8 and the measure of angle
asked on September 1, 2011 
Math
A triangle T with vertices A (2,4), B(6,2), and C(4,8) is mapped onto Triangle T’ with vertices A’(10,0), B’(8,4) and C’(14,2) by a rotation. Determine the center and angle of rotation that maps T onto T’.
asked on October 4, 2018 
Math
school water tank is in the shape of a frustum of a cone. The height of the tank is 7.2 m and the top and bottom radii are 6m and 12 m respectively. (a) Calculate the area of the curved surface of the tank, correct to 2 decimal places. (b) Find the
asked on May 10, 2019 
Math
the triangle ABC., BC = 12cm, ABC = 80 degree and ACB = 30 degree Calculate the area of triangle ABC. asked by Kd today at 3:06pm angle BAC = 1808030 = .... now find AB using the Sine Law. Area of triangle = (1/2)(AB)(BC)sin80° = .... you do the
asked on September 12, 2018 
Statistics
The structure of a twofactor study can be presented as a matrix with the level of one factor determining the rows and the levels of the second factor determining the colums.With this structure in mind,describe the mean differences that are evaluated by
asked on March 7, 2010 
Math
The lengths of three wires were 30m, 36 m and 84m. Pieces of wire of equal length were cut from the three wires. Calculate the least number of pieces obtained.
asked on May 10, 2019 
Math
A solid S is made up of a cylindrical part and conical part. The height of the Soild is 4.5m. The common radius of the cylindrical part and the conical part is 0.9m. The height of the conical part is 1.4m. a. Calculate the volume,correct to 1 decimal
asked on September 6, 2018 
Math
It took 6.5 gallons of gas to fill the tank of the family car. If the tank is .25 full when they arrived at the gas station, how much gas does the tank hold.
asked on September 29, 2014 
Math
a recipe used 2/3 cup of sugar for every 2 teaspoons of vanilla. What is the unit rate in cups per teaspoon ?
asked on December 5, 2016 
Math
A Kenyan bank buys and sells foreign currencies Buying (Ksh) Selling(Ksh) 1 Sterling pound 130.10 130.54 1 South African Rand 9.52 9.8 A businessman on a trip to Kenya had pound 50,000 which he coneveted to Kenya shillings. While in Kenya, he spent 80% of
asked on October 3, 2018 
Math
A solid S is made up of a cylindrical part and conical part. The height of the Soild is 4.5m. The common radius of the cylindrical part and the conical part is 0.9m. The height of the conical part is 1.4m. a. Calculate the volume,correct to 1 decimal
asked on September 4, 2018 
Math
Given that exterior angle of a regular hexagon is x, find the size of each interior angle of the hexagon.
asked on September 2, 2018 
Math
Mr. Caldwell has 28 students in his class and 12 of them are boys. What is the ratio of girls to boys? A. 4 : 7 B. 3 : 4 C. 4 : 3 D. 7 : 4
asked on June 4, 2014 
math
A number which is divisible by 3 is chosen at random from a set of even numbers between 1 and 20. What is the probability of choosing the numbers?
asked on January 18, 2019 
word problem
i need to solve with no words...a man, fox, goose, and corn are on one side of the river with only a boat for crossing. the goal is to transfer man, fox, goose, corn across the river using the boat which will carry the man and only one other thing. the fox
asked on August 25, 2011 
Math
The corner A, B, C and D of a ranch are such that B is 8 km directly East of A and C is 6km from B on a bearing of 30 degree.D is 7km From on a bearing of 300 degree. (a) the bearing of A and D; (b) the distance BD in kilometers. (C) the perimeter of the
asked on September 18, 2018 
math
in figure AB = 11 cm, BC = 8cm, AD = 3 cm, AC 5cm and A DAC is a right angle. the area of the quadrilateral ABCD
asked on October 13, 2018 
Math
The corner A, B, C and D of a ranch are such that B is 8 km directly East of A and C is 6km from B on a bearing of 30 degree.D is 7km From on a bearing of 300 degree. (a) the bearing of A and D; (b) the distance BD in kilometers. (C) the perimeter of the
asked on October 3, 2018 
Math
In the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. The size of ADC; The size of ACB; The area of the quadrilateral ABCD.
asked on September 19, 2018 
Math
A bag contains the two tiles shown. One tile is drawn at random from the bag. The tile is returned to the bag and again a tile is drawn from the bag. What is the sample space for this experiment? A. {L, M} B. {LL, LM, MM} C. {LL, LM, ML, MM} D. {L}
asked on June 2, 2014 
riddle
what 5 letter word, when all capitalized, reads the same way upside down.
asked on August 26, 2008 
Math
A solid S is made up of a cylindrical part and conical part. The height of the Soild is 4.5m. The common radius of the cylindrical part and the conical part is 0.9m. The height of the conical part is 1.4m. b. Calculate the total surface area of soild S.
asked on September 5, 2018 
Math
Use the mid ordinate rule with 6 strips to find the area bounded by the curve y = x^2 + 1, x = 4, x = 8 and xaxis
asked on September 3, 2018 
unscramble grammar
I need help descrambling 2 sentences: 1  insects plant eat plants birds snakes flying and eat lice eat birds 2 right nations set them will in africa new working for just governments that be up are to
asked on November 28, 2007 
Math
Two lines L1: 2y  3x  6 = 0 and L2: 3y + x  20 = 0 interest at a point A. (a) find the coordinates of A. (b) A third line L3 is perpendicular to L2 at point A. Find the equation of L3 in the form y = mx + c. (c) Another line L4 is parallel to L1 and
asked on September 17, 2018 
Math
In the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. (a) length DC; (b) the size of ADC; (c) the size of ACB; (d) the area of the quadrilateral ABCD.
asked on September 11, 2018 
Math
A solid S is made up of a cylindrical part and conical part. The height of the Soild is 4.5m. The common radius of the cylindrical part and the conical part is 0.9m. The height of the conical part is 1.4m. a. Calculate the volume,correct to 1 decimal
asked on September 5, 2018 
Math
A solid S is made up of a cylindrical part and conical part. The height of the Soild is 4.5m. The common radius of the cylindrical part and the conical part is 0.9m. The height of the conical part is 1.4m. c. A square base pillar offside 1.6m has the same
asked on September 5, 2018 
Math
Use the mid ordinate rule with strips to find the area bounded by the curve y = x^2 + 1, x = 4, x = 8 and xaxis
asked on September 3, 2018 
Math
A school intended to buy a certain number of chairs for sh 16200. The supplier agreed to offer a discount of sh 60 per chair which enabled the school to get 3 more chairs. Taking x originally intended number of chairs. Write an expressions in term of x
asked on August 28, 2018 
Astronomy
Few question about astronomy: 1.how many centimetres is equivalent to a lightnanosecond 2. How long is an astronomical unit (AU) in lightminutes (1min, i.e., the distance that light travels in a vacuum in one minute)? Please show the calculation if there
asked on September 13, 2011 
Math
A U.S. company sells products to a Dutch company and will receive payment of €550,000 in three months. At the time of sale, the spot rate of the euro was $1.25, and the 90day forward rate was $1.21. At the time of sale, the U.S. company negotiated a
asked on October 23, 2007 
Math
In the triangle ABC., BC = 12cm, ABC = 80 degree and ACB = 30 degree Calculate the area of triangle ABC.
asked on September 12, 2018 
Math
David and Sammy had each 840 tree seedlings. David planted equal number of seedlings per row in x rows while Sammy planted equal number of seedlings in (x + 1) rows. The number of tree seedlings planted by David in each row were 4 more than those planted
asked on September 3, 2018 
Math
David and Sammy had each 840 tree seedlings. David planted equal number of seedlings per row in x rows while Sammy planted equal number of seedlings in (x + 1) rows. The number of tree seedlings planted by David in each row were 4 more than those planted
asked on September 3, 2018 
Math
A trade bought corn for sh 20 per kilogram and beans for sh 60 per kilogram. She mixed the corn and beans and sold the mixture at sh 48 per kilogram. If she made a 60% Profit, determine the ratio corn: beans per kilogram in the mixture.
asked on September 2, 2018 
Math
A construction company employs technicians and artisans. One a certain day 4 technicians and artisans were hired and paid a total of sh 9000. On another day the firm hired 4 technicians and 1 artisans and paid a total of sh 9500. Calculate the cost of
asked on August 30, 2018 
algebra
Katydid population is modeled by N(t) = 50 / 1+9e^ .33t where t is number ofyears and N(t) is population is thousands at time t. when will katydid population reach 40,000?
asked on November 8, 2011 
reading
In the story Molly McGinty Has A Really Good Day Where did they find the notebook??
asked on November 29, 2007 
Math
The corner A, B, C and D of a ranch are such that B is 8 km directly East of A and C is 6km from B on a bearing of 30 degree.D is 7km From on a bearing of 300 degree. (a) the bearing of A and D; (b) the distance BD in kilometers. (C) the perimeter of the
asked on September 17, 2018 
Math
A trade bought corn for sh 20 per kilogram and beans for sh 60 per kilogram. She mixed the corn and beans and sold the mixture at sh 48 per kilogram. If she made a 60% Profit, determine the ratio corn: beans per kilogram in the mixture. cost: 20c+60b
asked on September 5, 2018 
Math
Given that A = (3 x, x+1 2) and B =(1 2, 3 0), find value of x for which AB is a singular matrix.
asked on September 3, 2018 
Math
Convert 2pi^c /9 into degrees = 2pi^c/9 * pi/180
asked on August 31, 2018 
Math
The education of a curve is given as y = 2x^3 9/2 x^2 15x + 3. Find the value of y when x = 2
asked on August 30, 2018 
Algebra 1
There are three times as many finches as mockinigbirds. If there are 48 birds, how many mockingbirds are there?
asked on September 10, 2015 
Math
Want to make a dog run. Have 199.4 feet of fencing and the garage is 19.2 feet wide. How long will the run be?
asked on October 24, 2014 
4th grade
what five letter word, when all capitalized, reads the same way upside down?
asked on August 26, 2008

Algebra
(6x + 1)(x 4)
posted on May 10, 2019 
Math
How did you got base 50 and hy :230
posted on April 29, 2019 
Math
So aera =1/2(AB)(BC)sin(ACB)
posted on September 19, 2018 
Math
6x = 180 x = 30
posted on September 14, 2018 
Math
sin70/a = sin80/12
posted on September 12, 2018 
Math
How did you got 8/5?
posted on September 5, 2018 
Math
Use the mid ordinate rule with 6 strips to find the area bounded by the curve y = x^2 + 1, x = 4, x = 8 and xaxis
posted on September 3, 2018 
Math
3x + 2y = 9000 4x + y = 9500 y = 9500  4x 3x + 2(9500  4x) = 9000 3x + 19000  8x = 9000 5x =  10000 x = 2000 y = 9500  8000 y = 1500
posted on August 31, 2018 
Finance
i do not know
posted on October 13, 2017 
chemistry
1.00 M is the concentration. M=mol/L which is concentration. 9.25 is correct!
posted on March 24, 2017 
Math
Yes
posted on December 5, 2016 
Math
Is it 1/3
posted on December 5, 2016 
Physical Anthropology
did you ever figured out the answer
posted on October 1, 2015 
math
154*7=13
posted on June 2, 2014 
Math
A{L,M}
posted on June 2, 2014 
Business Finance
5. What is the most she can pay for the bag and still retain 45% markup of the selling price? $46.75 Sells to customer $85.00 Trader 0.45x100x$85 = 38.25 $85.00 $38.25 = $46.75
posted on February 2, 2012 
algebta 2
Remember d is your pattern, or what you are adding, to get each term. You are starting with the first term, so when you add 1 time, you reach the 2nd term. THen when you add again (2 times) you are up to the 3rd term. When you add again (3 times) you move
posted on August 14, 2010