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mandy
Questions and answers by
mandy
, page 2
Questions (147)
x^2-17x+52=0
The answer is 4,13 But i don't know how to do..
1 answer
399 views
A woman is now 4 times older than her daughter.Six years ago,the product of their ages was 136.Find their present ages.
5 answers
2,291 views
2+square root 3 & 2- square root 3
Form equation ..
1 answer
360 views
2+square root 3 & 2- square root 3
Form equation ..
1 answer
378 views
The sum of a number and four times its reciprocal is 5.Find possible values of the number.
4 answers
4,487 views
Given that the quadratic equation is (2m+3)x^2+(4m-2)x-(m+1)=0.Find the value of m,if
•one of the root of the equation is
2 answers
624 views
f(x)=3x^2-12x+20
Find minimum value and value of x
1 answer
351 views
10^2n+3 × 20^n × 5^n
Step:? Answer:10^4n+3
1 answer
338 views
Given a set with n elements has 2^n subsets.Find the number of subsets for set A={2,3,5,7,11}.
4 answers
586 views
Find the value of logb square root b - loga(1/a)
1 answer
395 views
calculate the value of log square root p p^2.
1 answer
395 views
Given that x=a^m and y=a^n.Express log^a(3 square root x over ay^2) in terms of m and n.
1 answer
383 views
Given that log2 3=h and log2 5=k, express log2 0.45 in terms of h and k.
4 answers
1,970 views
Find the equation of the perpendicular bisector of the straight line joining the points A(-1,0)and B(3,4).
3 answers
552 views
Calculate the volume of 2.0 mol dm^-3 sulphuric acid,H2SO4 needed to prepare 2.5 dm^3 of 0.5 mol dm^-3 of the same acid
3 answers
1,046 views
Concentrated phosphoric acid,H3PO4 was added slowly into some water to produce 5.0dm^3 of a dilute acid solution.100g of the
2 answers
673 views
50.0cm^3 of 2.0 mol dm^-3 aluminium sulphate,Al2(SO4)3 solution
Calculate the number of moles of ions.
1 answer
447 views
The volume of 0.15 mol dm ^-3 sulphuric acid,H2SO4 required to completely neutralise 25.0cm^3 of potassium hydroxide,KOH
2 answers
571 views
A student dissolved 3.65 g of hydrogen chloride gas,HCL in water to make 1.0dm^3 of solution.Calculate the volume of a 0.1 mol
2 answers
638 views
200cm^3 of 1.0 mol dm^-3 sulphuric acid,H2SO4 is poured into a 250 cm^3 volumetric flask.Distilled water is then added to make
2 answers
847 views
100cm^3 of a sodium hydroxide,NaOH solution contains 4.0g of solid sodium hydroxide,NaOH.40 cm^3 of phosphoric acid,H3PO4 is
2 answers
628 views
Solution A:50cm^3 of 1.0mol dm^-3 hydrochloric acid,HCl
Solution B:10cm^3 of 2.0mol dm^-3 hydrochloric acid,HCl (a)Calculate the
2 answers
739 views
2.08g of metal Y react with 0.96g of oxygen to form a metal oxide.The empirical formula of the metal oxide is Y2O3.What is the
3 answers
834 views
A point moves such that its distance from point A(1,0) is twice its distance from B(-2,0).Find the equation of the locus of the
2 answers
712 views
A point P moves so as to satisfy the ratio OP:PA=1:3,where O is the origin and A is the point (-4,0).Find the equation of the
2 answers
502 views
In a bag,there are 18 cards of which x cards are coloured and the rest are white.When another 6 white cards are added into the
2 answers
629 views
There are 25 red beads,x blue beads and y green beads in a box.When a bead is picked at random,the probability that it is blue
2 answers
825 views
Given that k,3k and k+1 are three consecutive terms of an A.P,find the numerical value of k.Then find the first term if 3k is
3 answers
891 views
The first three terms of an arithematic profgression are x,2x+y and 9x-y.The sum of these three terms is 60.Find the numerical
3 answers
460 views
The first three terms of an A.P. are p-5,p-3 and 2p-15.If the sum of the first n terms of the progression is 180,find the value
3 answers
413 views
Find the total number of integers between 10 and 1000 that are divisible by 3.
3 answers
533 views
A wire of length 380 cm is cut into 10 pieces.Each piece is then bent to form a square.The dimensions of the first three
2 answers
669 views
Tn=3n-2
Find the first term,a;the common difference,d;and then find the 5th term.
5 answers
1,635 views
An arithmetic progression has 8terms.The sum of all 8terms is 180 and the sum of all odd terms is 80.
Calculate (a)the first term
3 answers
418 views
Pls help me..give me a best sample of introduction (paragraph 1) and Conclusion(p.6) & keywords of the contents(p.2-5) about
5 answers
448 views
A man applies a force of 150N to pull a 20kg box with a rope that makes an angle of 60percent with the horizontal.The box
2 answers
638 views
Five coupons of values $2,six coupons of values $3,two coupons of values $5 and two coupons of values $8 are put into a small
1 answer
462 views
As a result of rigorous experimentation
Question 7 options: more hypotheses may be developed. more questions may be asked. a new
1 answer
364 views
Ionic bonds:
a. result from the sharing of electrons between atoms. b. form only between polar molecules. c. form between atoms
4 answers
3,039 views
what are 3 ratios for 1/10?
3 answers
297 views
Nine friends share 12 pounds pecans equally. how many pounds does each friend gets equally?
7 answers
1,469 views
Bruce is furious when his midterm is returned with a C grade. He tells his sociology professor that he had read each of the
4 answers
2,106 views
What change was made in 1969 to South Carolina constitution of 1895?
A. The governor was permitted to succeed. B. The residency
16 answers
asked by
mandy
5,396 views
Question 5 For The Following Equations: Bi2O3(S) + C10- (Aq) + BiO; (Aq) + CF (Aq) (1) Write The Two Half-Cell Reactions
1 answer
103 views
Question 5 For The Following Equations: Bi2O3(S) + ClO- (Aq) > BiO(Aq) + Cl (Aq)
(1) Write Two Half-Cell Reactions
1 answer
108 views
an open rectangular box is made of wood 1cm thick if the external dimensions are 42cm long 32cm wide and 15cm deep calculate
1 answer
149 views
explain why you need to use sieving to separate beads,sand,iron filings ,salt and water
2 answers
118 views
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