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David

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The sum Sn of the first n terms of a sequence is given by Sn=n(n+2).Find: (¡) the sum of the twentieth,twenty-first and
1. 1 answer
2. 787 views
AB = 7X -4, BC =4X +5 i need to find the AC
1. 2 answers
2. 274 views
(a) Suppose the electric field (in spherical coordinates) is found to be kraf, for r a where k and a are some constants.i. Find
1. 0 answers
2. 331 views
A 240 degree sectors of a circle of a radius 14cm is bent to form a cone.find the radius of the base of the cone and it vertical
1. 1 answer
2. 385 views
As a senior prepect of your school, write a speech you would give to fresh students telling them,atleast,three things that can
1. 1 answer
2. 357 views
in a class of 26 students, 14 have a cat and 7 have a dog. There are 5 students who have a cat and dog. What is the probability
1. 9 answers
2. 1,863 views
A person going to a party was asked to bring 3 different bags of potato chips. Going to the store, he finds 19 varieties.
1. 2 answers
2. 339 views
draw a flowchart for calculating the average percentage marks of 50 students each student appeared in 10 subject the flowchart
1. 1 answer
2. 1,796 views
Enter an equation that represents the data in the table.x 3 5 8 10 y 9 15 24 30 An equation is y =
1. 2 answers
2. 579 views
Please I need help on this question: 158 gram of a gas at STP occupies a volume of 50•00dm^3 what is the relative molecular
1. 1 answer
2. 271 views
158gram of a gas at STP occupies a volume of 50•00dm^3 what is the relative molecular mass of the gas
1. 1 answer
2. 250 views
Line segment AB is divided by point C in the ratio 1:2. Point A is at (-6, 6) and point C is at (2, 4). What are the coordinates
1. 3 answers
2. 870 views
A directed line segment begins at F(-10, -4), ends at H(8, 4), and is divided in the ratio 3 to 1 by G.
1. 1 answer
2. 1,058 views
is Jazz musicians played by ear a intransitive or transitive
1. 1 answer
2. 440 views
Write the slope y-intercept form of the equation of the line with slope 3 and y-intercept 2.
1. 1 answer
2. 550 views
What is the value of p so that the line passing through (6, 2) and (9, p) has a slope of –1?
1. 3 answers
2. 1,410 views
What is the slope of the line that is perpendicular to the line y=2/5x-3?
1. 1 answer
2. 461 views
What is the slope of the line with an -intercept of 4 and a -intercept of –3?
1. 1 answer
2. 263 views
What is the equation of the line that passes through (3, –1) and is perpendicular to the line y=-3x+2?
1. 1 answer
2. 316 views
What is the equation of the line that passes through (3, –1) and is parallel to the line y=3x+2?
1. 1 answer
2. 411 views
Log3(x2+2x+2)=0 what is the answer?
1. 2 answers
2. 784 views
Which two railway companies were responsible for the transcontinental railroad?Canadian National and Canadian Pacific Central
1. 1 answer
2. 410 views
express the ratio 20cm to 15m in the form 1:n
1. 7 answers
2. 2,261 views
An arithmetic sequence is represented by the explicit formula A(n) = 2 − 5(n − 1). What is the recursive formula?A. A(n) =
1. 1 answer
2. 1,903 views
Which were advantages the South had over the North at the start of the Civil War?Select all that apply. The South had a stronger
1. 0 answers
2. 834 views
(a) Let [r s] ∈R^2 and T: R2→R2 be defined by T(⃗u)=⃗u+ [r s].Show that if r /= 0 or s/=0 thenT is not a linear
1. 0 answers
2. 453 views
Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the high temperature of 67 degrees
1. 1 answer
2. 2,215 views
Highlight 25 civic problems in Nigeria
1. 7 answers
2. 785 views
A carpenter was putting up a shelf. The shelf needed to be 86 cm longbut the piece of wood he had was 1 m and 26 cm long. His
1. 1 answer
2. 402 views
Wat job can I do with this subjectsMathematics lite,cat, tourism, business
1. 1 answer
2. 306 views
According to a survey 35% of adults are against using animals for research assume that this result holds true for the current
1. 0 answers
2. 364 views
Chris earned $72 for mowing 3 lawns. How much money would he earn if he cut 8 lawns?
1. 1 answer
2. 485 views
Use the following graph to estimate the rate of change of the function at x=0.6 using the points(0,0) and (1,-0.5)
1. 3 answers
2. 1,369 views
Calculate the pH of 0.005moldm-3 tetraoxosulphate(VI)
1. 6 answers
2. 3,159 views
A social scientist conducts a study with 10 subjects. In which situations is a permutation necessary to determine the number of
1. 0 answers
2. 1,137 views
1. Plot a reaction that would produce propyl acetate. Identify the reactants needed and the catalysts.2. Identify the products
1. 1 answer
2. 951 views
The second and seventh term of a g.p are 9 and 1/2 respectively.find the common ratio, first term and 10th term
1. 1 answer
2. 400 views
A block and tackle having velocity ratio of 5 is used to raise load of 400N through a height of 10m.If the work done by friction
1. 2 answers
2. 845 views
ray hf is an angle bisector of <ehg. m<ehg =68 and m<fhg= 9x - 2 find The value of x
1. 2 answers
2. 901 views
Given this set of parametric equations, find the scalar equation:x = 1 + 2t y = 1 - 3t
1. 1 answer
2. 868 views
Determine a unit vector that is orthogonal to u = [3, -4, 1] and v = [2, 3, -4]
1. 1 answer
2. 606 views
from "The Mouse"What do Theodoric's attempts to dislodge the mouse represent? A. his acceptance of the idea that being
1. 1 answer
2. 810 views
A rocket with a mass of 2.5 × 105 kg is approaching straight into a relatively small black hole with the mass of the sun, MB =
1. 0 answers
2. 456 views
In the process of being thrown, a 0.500 kg ball travels at a speed of 10.0m/s over a distance of 0.75m. What is the force that
1. 2 answers
2. 774 views
The area of triangle ABC is divided into four equal parts by segments parallel to the base BC. The longest of these segments is
1. 5 answers
2. 1,742 views
find the approximation of the function (x^3-2x^2x^2x-1)/(x^2+2x+1)
1. 2 answers
2. 363 views
An economics exam is worth 60 points and is taken by 500 students. the scores on the exam are normally distributed with the
1. 1 answer
2. 493 views
An economics exam is worth 60 points and is taken by 500 students. the scores on the exam are normally distributed with the
1. 1 answer
2. 508 views
In the Netherlands, there are on average 3 days of sun, 7 days of cloudy weather and 4 days of rain in a period of 14 days. An
1. 1 answer
2. 507 views
P ( a <X < 80 ) = 0,45Average = 80 Standard deviation = 10
1. 2 answers
2. 225 views
#1: Prove or provide a counterexample:For all sets A, B, C, if A is subset of B and B is a subset of C^c (complement of C), then
1. 0 answers
2. 440 views
Call a relation R “orbital” if xRy and yRz imply zRx. Prove that R is an equivalence relation if and only R is both
1. 0 answers
2. 707 views
#2: Use a proof by contradiction to prove:For all sets A, B, C, D if A intersection C= { }, then (A x B) intersection (C x D) =
1. 0 answers
2. 368 views
#1: Prove or provide a counterexample:For all sets A, B, C, if A is subset of B and B is a subset of C^c (complement of C), then
1. 0 answers
2. 411 views
Call a relation R “orbital” if xRy and yRz imply zRx. Prove that R is an equivalence relation if and only R is both
1. 0 answers
2. 357 views
#2: Use a proof by contradiction to prove:For all sets A, B, C, D if A intersection C= { }, then (A x B) intersection (C x D) =
1. 0 answers
2. 331 views
Prove or provide a counterexample:For all sets A, B, C, if A is subset of B and B is a subset of C^c (complement of C), then A
1. 3 answers
2. 521 views
Call a relation R “orbital” if xRy and yRz imply zRx. Prove that R is an equivalence relation if and only R is both
1. 2 answers
2. 486 views
#2: Use a proof by contradiction to prove:For all sets A, B, C, D if A intersection C= { }, then (A x B) intersection (C x D) =
1. 0 answers
2. 366 views
#1: Prove or provide a counterexample:For all sets A, B, C, if A is subset of B and B is a subset of C^c (complement of C), then
1. 2 answers
2. 383 views
Leonard weighed four phones and two chargers and found out that they weighed 46 ounces. Hratch weighed 3 phones and three
1. 1 answer
2. 434 views
Dianne bought 4 tacos and a chalupa for $11.50. Anthony bought 3 tacos and 2 chalupas for $13. Find out how much each item
1. 1 answer
2. 342 views
Bob bought three chapsticks and two eyeliners for 7 dollars. Brandi bought 4 chapsticks and five eyeliners for $14. Find out how
1. 1 answer
2. 312 views
Kabir of haridwar and bihari of mathura enter into a joint venture. They decided to send 500 machines to devdhar of Gujarat.
1. 0 answers
2. 450 views
I forgot My science book...1. About 20% of radiation from the Sun is ___ 2. About 25% of radiation from the sun is ___ 3. About
1. 1 answer
2. 667 views
Prove that the statement is false:"There exists a real number y such that for every real number x, y < x." I tried to prove this
1. 2 answers
2. 449 views
The force E needed to make a machine pull a load is partly constant and partly varies as the load (L) to be pulled . for a load
1. 1 answer
2. 403 views
What is the local time of a place on longitude 64 degree east when the GMT is 10•00 am
1. 11 answers
2. 4,184 views
Allied alloy travel between town A and B at a distance of 20 kilometres for the first 150 km to Lori travel at average speed of
1. 1 answer
2. 469 views
the force due to gravity is called
1. 1 answer
2. 407 views
Help!!!1) Two countries, A and B, each produce 2 goods, X and Y, using labor. Country A need 2 units of labor to produce a unit
1. 1 answer
2. 888 views
1) Two countries, A and B, each produce 2 goods, X and Y, using labor. Country A need 2 units of labor to produce a unit of good
1. 3 answers
2. 647 views
What is the synthesis for hydroxyhexane to 5-bromo-1,3-hexadiene?
1. 0 answers
2. 272 views
Bella, who is currently 25 years old, wants to invest money into a retirement fund so as to have $2,000,000 saved up when she
1. 0 answers
2. 565 views
Given that the following AP is 9,x,y,z and 25a:find the value o x,y and z b:the next three terms after 25 c:the sum of x,y and z
1. 1 answer
2. 316 views
Which element of plot matches the definition
1. 2 answers
2. 709 views
If a jacket costs $71 and there is a 11% sales tax, how much will you pay for the jacket
1. 1 answer
2. 565 views
Really basic question - what exactly are core electrons? ENC (effective nuclear charge) has a formula:# of protons - # of core
1. 1 answer
2. 609 views
How do i determine if this function (x-4)(x+3)(2x-1) is even or odd?
1. 6 answers
2. 386 views
Suppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your calculator answer would be 11.76
1. 3 answers
2. 2,956 views
Mention some major local or world civil problem
1. 1 answer
2. 486 views
An archer defending a castle is on a 15.5 m high wall. He shoots the arrow straight down at 22.8 m/s. How much time does it take
1. 1 answer
2. 1,031 views
When you attach a string to the roof of a moving object and a mass at the other end of the string, you can create an
1. 1 answer
2. 451 views
Two blocks ( m1 = 6.8kg, m2 = 5.2kg) are in contact with each other while sitting on a friction less surface. M2 is not resting
1. 0 answers
2. 771 views
The “Elastic Clause” of the Constitution :a. Held the union together by setting up a bicameral Congress—a compromise
1. 1 answer
2. 937 views
Project Setup:You work for a company that manufactures cylindrical steel drums that can be used to transport various petroleum
1. 8 answers
2. 2,197 views
Superman is flying at an initial velocity of 33.5 m/s [N] when he decides to slow to 10.0 m/s [N] in a time of 8.05 s. He then
1. 1 answer
2. 959 views
A car moves at 12 m/s for 30.0 seconds. It then accelerates at 1.5 m/s^2 for 8.00 seconds.Finally, it continues on at this top
1. 2 answers
2. 2,500 views
calculate the number of moles of magnesium chloride produced by reacting 168 grams of magnesium trioxocarbonate 4 with excess
1. 2 answers
2. 1,146 views
Calculate the mass of a sample of potassium sulfate that contains 0.01g of oxygen.
1. 1 answer
2. 495 views
Lucy's hockey team sells candy bars at 2$ each. It costs the team 50 cents to purchase each bar, with a fixed shipping cost of
1. 1 answer
2. 822 views
In eight days, a certain amount of Vanadium-48, V^48, decays to 1 over square root 2 of its original amount. What is the half
1. 2 answers
2. 1,080 views
It costs a bus company 225$ to run a bus on a ski trip, plus 30$ per passenger. The bus has a seating capacity of 22 passengers.
1. 1 answer
2. 1,150 views
Given the function f(x) = 5 over 5x - 16, explain how to find the domain and range of the function and it's inverse.
1. 1 answer
2. 618 views
How many moles of sulfur dioxide are produced when 72.0 grams of water is produced by the process:2H2S + 3O2 ---> 2H2O +2SO2
1. 1 answer
2. 852 views
What is the percentage composition of water in a sample of SrS2O3 plus 5 H2O? (this is a hydrate)
1. 1 answer
2. 450 views
Consider a Bernoulli process with parameter p=1/3. Let T1 be the time of the first success and let T1+T2 be the time of the
1. 1 answer
2. 2,609 views
et X and Y be independent Erlang random variables with common parameter λ and of order m and n, respectively. Is the random
1. 1 answer
2. 1,432 views
The consecutive interarrival times of a certain arrival process are i.i.d. random variables that are equally likely to be 5, 10,
1. 1 answer
2. 835 views
Consider an arrival process whose interarrival times are independent exponential random variables with mean 2 (and consequently
1. 1 answer
2. 4,448 views

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