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lucy

Questions (350)

A golfer strikes a golf ball with an initial velocity of 45 m/s at an angle of 40° to the horizon
1. 1 answer
2. 155 views
one less than the product of two and n
1. 1 answer
2. 158 views
Two point charges 5uc and 3uc are fixed 4cm apart . calculate the distance in between them at which the resultant is zero
1. 2 answers
2. 1,338 views
-3w-3x-7w+4x-2w simplified
1. 4 answers
2. 839 views
a)predict whether a 2.0mol/L solution of ammonia chloride will be acidic basic or neutralb) calculate the pH of a 0.20 mil/L
1. 1 answer
2. 567 views
what is the net charge of a molecule that has 8 protons and 11 electrons
1. 1 answer
2. 431 views
ling answered 86 problems on a test correctly and received a grade 98%. How many problems were on the test if all the problems
1. 1 answer
2. 667 views
What was the purpose of tomb paintings?
1. 2 answers
2. 437 views
If (92)p = 98, what is the value of p?
1. 1 answer
2. 165 views
Why is the Torah important to Judaism?A. It describes polytheism. B. It predicts the future of the Jewish people. C. It tells
1. 4 answers
2. 1,650 views
A line L1 passes through point (1,2) and has a gradient of 5.Another line L2 is perpendicular to L1 and meets it at a point
1. 2 answers
2. 488 views
anna brought a computer game for $12 and 2 posters that cost d dollars at the media store. how much money did anna spend
1. 1 answer
2. 452 views
if i were to get:Mathematics 80,English 85,Kiswahili 70,History 90,French 80,Chemistry 90,Biology 85,C.R.E 100.What would be my
1. 1 answer
2. 443 views
A frustrum that is cut of has the bottom radius being 63 and the top radius is 21.the height is 12.Find the volume of the
1. 2 answers
2. 420 views
60cm^3 of oygen diffuses through a porous pot in 50seconds.How long would it take 60cm^3 of oxgen gas diffuses through a porous
1. 1 answer
2. 516 views
The ratio of the 6th to the 2nd term of geometric sequence is 256.If the 3rd term of this sequence is 32.Determine the first and
1. 3 answers
2. 1,365 views
The 10th term of an arithmetic sequence is 42 more than the 7th term.If the 1st term is -14,find the second term of the sequence
1. 1 answer
2. 1,460 views
Write the 1st 3 terms of the sequence whose n^th term is given by 2^n+1.
1. 5 answers
2. 793 views
Calculate the number of moles of Na2CO3 present in 100cm^3 of 2 M Na2CO3 solution.i got 5 moles.am i right
1. 5 answers
2. 2,088 views
Determine the number of sodium ions contained in 25cm^3 of 0.5M sodium carbonate solution.
1. 2 answers
2. 795 views
Draw the structural formula and give the IUPAC names of the following hydrocarbon.a)CH3CHBrCHBrCH(CH3)CH3
1. 1 answer
2. 1,039 views
Find the length of a circle with diameter of 12cm and central angle of 30°
1. 3 answers
2. 645 views
If 25cm^3 of NaOH solution containing 4.0g per litre of solution neutralised 50cm^3 of a monobasic acid,HX containing 1.8g of
1. 2 answers
2. 1,085 views
If 25cm^3 of NaOH sol containing 4.0g per litre of sol neutralised 50cm^3 of a monobasic acid,HX containing 1.8g of
1. 1 answer
2. 547 views
A label on a bottle of HCL has the following information,density 1.134gm^-3 and % purity 37%. Find the mass of HCl in 1cm^3 of
1. 5 answers
2. 1,512 views
20cm^3 of sodium carbonate solution was reacted completely with 25cm^3 of 0.8 M HCL according to the equation.
1. 1 answer
2. 967 views
i have done my best in organic chemistry but still i cant seem to get it.plz help me out.
1. 1 answer
2. 338 views
State one reagent that can be used to distinguish btwn each of the pairs of ions and in each case state what is observed if each
1. 1 answer
2. 665 views
Determine the molarity containing 10.6g of NaCO3 dissolved in:a)250cm^3 of distilled water.i got 1.06. b)500cm^3 of distilled
1. 1 answer
2. 580 views
State the observation made in the reacting vessel when sulphur dioxide was prepared
1. 1 answer
2. 356 views
In a circle radius 10cm,an arc PQ subtends an angle of radians at the centre of the circle.Calculate the radius of another
1. 5 answers
2. 1,241 views
Mr.kanja,Miss Kanene and Mrs Nyaga have to mark a form three contest for 160 students.They take 5mins,4mins and 12 mins
1. 2 answers
2. 1,042 views
Find the probability of spinning a 5 and rolling a 1, 2, or 3.A) 1/16 B) 1/2 C) 1/6 D) 1/8
1. 4 answers
2. 2,200 views
A compound weighing 42 grams was found to contain 12 grams of magnesium,6 grams of carbon the rest oxgen.Determine the empirical
1. 3 answers
2. 1,533 views
How many moles of oxgen are in one mole of calcium carbonate?
1. 3 answers
2. 441 views
How do i plot this graphic quadratic equation y=x^2-8x+12.I have tried but i end up failing.Please help me and explain in detail
1. 2 answers
2. 517 views
A cylindrical metal bar of diameter 14 cm and length 2m is melted and moulded into spherical balls.In the process,5% by volume
1. 2 answers
2. 852 views
The coordinates of points A and B are A(2,3).B(4,-5).M is the midpoint of vector AB.Determine the coordinates of point M and the
1. 2 answers
2. 1,717 views
Rationalize the denominator and simplify:4 square root 5+3square root 2 divide 2square root 2-square root 5
1. 1 answer
2. 555 views
A distance of 12km is represented by a length of 4cm on a map.Given that the scale of the map is 1:n,find the a)value of n
1. 4 answers
2. 1,432 views
A man left his estate in kerugoya to his two sons.The remainder was to be shared equally among his six brothers.If the estate
1. 1 answer
2. 694 views
A rectangle measures 20 cm by 15.If each dimension is increased by 2.5cm,by what percentage is:a)the perimeter of the rectangle
1. 3 answers
2. 1,011 views
(-k/2)^2=2*18,k^2=36*4.How is this possible i have no idea where *4 came from
1. 3 answers
2. 336 views
y=2x^2-2x-3x+3 y=2x^2-5x+3 0=2x^2-3x-2 when you minus this u get y=-2x-3x+5 how is this possible
1. 3 answers
2. 302 views
Given that 2x^2-kx+18 is a perfect square,find k and hence solve the equation 2x^2-kx+18=0 by factorisation.Plz explain in
1. 3 answers
2. 1,255 views
Form a quadratic equation in the form ax^2+bx+c=0 whose roots are b and twice the negative reciprocal of b.plz explain in detail
1. 4 answers
2. 1,366 views
The angle of elevation of the top of a tree from a point P on a horizontal ground is 30°.From another point Q 8 metres from the
1. 7 answers
2. 1,024 views
Am re-posting this question.A certain volume of oxgen diffused from a given apparatus in 125 secs.In the same conditions,the
1. 5 answers
2. 451 views
A certain volume of oxgen diffused from a given apparatus in 125 secs.In the same conditions,the same volume of gas N,diffuse in
1. 4 answers
2. 820 views
I have tried posting a question on matrix bt i just dont know how to write the question u know the arrangement of numbers.Plz
1. 7 answers
2. 452 views
I want to be a lawyer but i have no idea what grades i shld get in every subject so as to achieve this and i dont take physics
1. 1 answer
2. 296 views
Simplify the following surd.Square root of 16/9.square root of 8+square root 18 +square root 50.Plz explain in detail
1. 2 answers
2. 495 views
A village water tank is in the form of a frustrum of a cone of height 3.2 cm.The top and bottom radii are 18cm and 24cm
1. 2 answers
2. 483 views
Three litres of water 1g/cm^3 is added to twelve litres of alcohol density 0.8g/cm^3.What is the density of the mixture?
1. 2 answers
2. 1,470 views
am getting problem with getting the volume of a density of mixture plzzzz am really really in need of your help
1. 1 answer
2. 316 views
i got till 10.5 litres how does one get till 847.6
1. 2 answers
2. 353 views
A piece of metal has a volume of 20 cm^3 and a mass of 300g.Calculate the density of the metal in kg/m^3.i got 15.plz confirm my
1. 3 answers
2. 2,488 views
Write a balanced equation for the reaction between rhombic and hot nitric acid
1. 3 answers
2. 592 views
When 34.8grams of potassium sulphate was dissolved in 500cm cubed distilled water.calculate :the concentration of potassium
1. 3 answers
2. 1,785 views
How does one use DEG in a calculator
1. 4 answers
2. 445 views
Use tables to solve the following correct to the nearest 1/10 of a degree.a)8sin_=3.b)16cos_-12=0.c)2+3tan_=0.d)8sin_-5=0
1. 12 answers
2. 487 views
plz help with surds
1. 2 answers
2. 398 views
Plz transtlate.Quels sont tes projets pour l'annee prochaine
1. 6 answers
2. 457 views
plz translate this.Comment etais-tu quad tu avais 14 ans
1. 1 answer
2. 414 views
How do calculate surds plz help
1. 1 answer
2. 403 views
Solve the quadratic equation 8x^2+6x-9
1. 3 answers
2. 338 views
Determine whether each number could be the probability of an event. Explain your reasoning.1.5 1
1. 1 answer
2. 695 views
Suppose you toss a fair, two-sided coin.List the sample space. List one possible event. Calculate the probability of that event.
1. 3 answers
2. 1,954 views
Felix has a bag of 6 yellow marbles and 6 green marbles. He picks a marble and then puts it back 26 times. The results are shown
1. 2 answers
2. 1,913 views
Which experiment has a non-uniform probability model? SELECT TWO ANSWERS.A.Tossing a fair coin one time B.Randomly guessing the
1. 10 answers
2. 1,887 views
list the salient characteristics of kingdom monera
1. 2 answers
2. 419 views
state reasons why christians in the early church prayed
1. 1 answer
2. 368 views
Regina has a bag of 6 orange marbles and 6 black marbles. She picks a marble at random and then puts it back in the bag. She
1. 1 answer
2. 685 views
Interesting story in french
1. 1 answer
2. 327 views
summary of tumbo lisiloshiba
1. 1 answer
2. 623 views
Name the conditions under which urine production increases in mammals
1. 1 answer
2. 2,031 views
HelpWhy does the number of bacteria increase rapidly in a short period of time?
1. 1 answer
2. 406 views
What are the levels of organization in the human body (i.e. atoms-->molecules--> cells, etc.)
1. 1 answer
2. 932 views
How many cells are in the eighth generation?
1. 2 answers
2. 531 views
The density of a substance Ais given as 13.6g/cm cubed and that of substance B as 11.3g/cm cubed.Determine correct to 1dp the
1. 1 answer
2. 563 views
A solid metal cylinder has diameter 60cm and height 28cm.It is melted and recast to 50 equal cubes.Find the edge of each cube to
1. 3 answers
2. 937 views
how are sedimentary rocks formed
1. 1 answer
2. 1,509 views
the product of an integer and its opposite A. positive B. negative
1. 1 answer
2. 1,440 views
An organism that has two identical alleles (like two capitol “T’s” or two lowercase “t’s” for example) is called
1. 4 answers
2. 1,270 views
ways in which human activity can impact an organism’s ability to obtain the resources it needs to survive.
1. 1 answer
2. 698 views
Explain your observations on what organisms need to grow. Also discuss ways in which human activity can impact an organism’s
1. 1 answer
2. 523 views
identify and give examples of plant tropismsPlease, and thank you.
1. 1 answer
2. 876 views
How can I find y-intercept when given the slope and a point
1. 2 answers
2. 355 views
How can you tell when an expression is linear?
1. 2 answers
2. 335 views
The graph shows that the amount of water in a person's body varies directly with the person's mass. What is the ratio of the
1. 3 answers
2. 930 views
If you solve using the equation for the constant of proportionality, y/x = k, with k = 4/5 and y = 2/3, what is the value of x?A
1. 4 answers
2. 1,078 views
The weight of a person on Venus varies directly with his or her weight on Earth. A person weighing 120 pounds on Earth weighs
1. 4 answers
2. 3,760 views
The graph shows that the amount of water in a person's body varies directly with the person's mass. What is the ratio of the
1. 2 answers
2. 1,706 views
The weight of a person on Venus varies directly with his or her weight on Earth. A person weighing 120 pounds on Earth weighs
1. 2 answers
2. 695 views
If you solve using the equation for the constant of proportionality, y/x = k, with k = 4/5 and y = 2/3, what is the value of x?
1. 1 answer
2. 482 views
Paula knits hats. The number of hats h she can knit varies directly with the amount of yarn (y) in yards she has. The constant
1. 1 answer
2. 504 views
1.Which is a source of political conflict between China, Japan, and South Korea today?A. trade barriers B. nuclear weapons
1. 40 answers
2. 12,183 views
Which is a source of political conflict between China, Japan, and South Korea today?A. trade barriers B. nuclear weapons
1. 4 answers
2. 935 views
The distance (d) in meters that an ant can travel varies directly with the amount of time (t) in hours it spends walking. Assume
1. 6 answers
2. 2,034 views
I do not understand how to do this please help.The distance (d) in meters that an ant can travel varies directly with the amount
1. 2 answers
2. 503 views

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