Wednesday
August 24, 2016

Posts by JAY

Total # Posts: 1,532

Math
Angle 1 and angle 2 are supplementary angles. m∠1 = 4x+3 m∠2 = 3x−5 What is the value of x? a.) x = 178 b.) x=178/7 c.) x=92/7 d.) x = 26
August 22, 2016

Maths Unitary Method
Due to direct proportion we have: Sol- 5 men = 7 women 1 men = 7/5 women 10 men = (7/5×10)women = 14 women (10 men + 5 women = (14 women + 5 men) Let Rs x money be earned 7/875=19/x 1/125=19/x (1×x)=(125×19) x=Rs 2375
August 19, 2016

Science
D?
August 16, 2016

Science
Under the 1980 Low-Level Radioactive Waste Policy Act, each state must take responsibility for its non-defense related, low-level nuclear waste. If nuclear waste was NOT regulated and disposed of properly, which of these could be a possible effect? A) The risk of cancer in ...
August 16, 2016

Maths
you need to go on a trip to other ancient sites. Your plane takes off at 10:00 am from an airfield, and flies at 120 km/h on a bearing of 325 degrees T. your crew and equipment are in a second (incorrect flight) plane that takes off at 10:05 am from the same airfield, and ...
July 29, 2016

Msth
1,130 miles. 25 miles per gallon @ 2.60 per gallon. How much money on fuel.
July 21, 2016

Physics
A paper ball is dropped from a height of 5 meters above the ground. It hits the ground traveling with a speed of 2 m/s. How much work did air resistance do on the paper ball? I dont know how to start this. PLease help
July 20, 2016

Language
The Giver - How does the content of Jonas’s memories change as he approaches the summit of the hill? Please help!
July 12, 2016

Physics
a car which 100 m away from a polic station and is initially at rest started running at 80 m/s. How far wil the car be from the police station after 20 seconds
July 10, 2016

Math
Nadine dives with a senior swim club. In a dive off a 10m platform she reaches a maximum height of 10.5m after. 35s. How long does it take her to reach he water?
July 7, 2016

Physics
No Idea if I am doing this right. But so far what I done was 10.5Sin(67.6) = - gΔt and got -9.71
July 5, 2016

Physics
A catapult is launching rocks at your village. It is hiding in a forest. All you can measure is that the rock just passes over an 8 meter tall tree that is 73 meters from the village and that it takes 3 seconds for the rock to arrive from that moment. How far is the catapult ...
July 5, 2016

math
yes
June 27, 2016

Probability
Kindergarten class has 7 Scooby Doo , 8 Sesame Street, and 9 Barney DVDs. Each week, the class randomly selects 2 DVDs to watch on Friday. What is the probability that both movies are Barney?
June 25, 2016

Probability
bobpursley Thank you! I get easily miss lead by wording between combination and permutations problems
June 25, 2016

Probability
The Brass Tap stocks 12 different beers, which it rotates randomly among its 8 taps. They will have one beer for each tap, and no two taps will have the same beer on any given evening. How many different beer menus do they need to stock.
June 25, 2016

english
Change the italicized clause to a nominative absolute. Rewrite the entire sentence in the box below. As the hurricane season was over, people returned to the cottages on the beach. as the hurricane season was over is italicized.
June 23, 2016

physics
Two charges of magnitude +2×10^–6 C each are 60cm apart. find the magnitude of the force exerted by these charges on a third charge of magnitude +4×10^-4C that is 50cm away from each of the charge.
June 10, 2016

math
the length of a rectangular garden is 4m more than its width determine the gardens width if the area is 117m^2
May 30, 2016

physics pls help
thanks bob
May 29, 2016

physics pls help
Please can someone show me how to go about this problem? The X-Y plane is illuminated by an electric field of strenght given as E=(24î + 60j + 70k) N/C; the flux through a 1.5m² potion of the illuminated plane is
May 29, 2016

physics
Please can someone show me how to go about this problem? The X-Y plane is illuminated by an electric field of strenght given as E=(24î + 60j + 70k) N/C; the flux through a 1.5m² portion of the illuminated plane is
May 29, 2016

Socials studies
What were the effected of having to use rivers to complete such long journey? Help plss
May 25, 2016

chem
born haber cycle is not generally used to consider the energy changes involved in the formation of solid silicon(IV)oxide SiO2 because it has a very high temperature explain
May 20, 2016

chemistry
it has a very high melting point I get it. but what does it mean? why is it a factor?
May 19, 2016

chemistry
why is born haber cycle not generally used to consider the energy changes involved in the formation of solid silicon(IV)oxide SiO2
May 19, 2016

chemistry
I mean why are their bonds different? why does Becl2 form covalent molecule and SiO4 a covalent network solid?
May 18, 2016

chemistry
why does BeCl2 have low melting point but SiO4 has high melting point even though they are both covalent bonds between the atoms
May 18, 2016

ms sue?
Suppose that in a population of shoppers, the proportion of people who had visited supermarket A last month is 0.22. Also that in the same population, the proportion of people who had visited supermarket B last month is 0.46. The proportion of shoppers who had visited both ...
May 17, 2016

please help
8.03 (to 2 d.p) Thanks
May 17, 2016

please help
In a study about children’s pocket money, two samples of schoolchildren were asked how much money they received each week. In one sample, of size 25, the mean is £6.00. In the other sample, of size 43, the mean is £9.21. Calculate the mean based on the ...
May 17, 2016

Mech. Engr./Dynamics/Physics/Math
A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...
May 16, 2016

Mech. Engr./Dynamics/Physics/Math
A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...
May 15, 2016

Marketing
Which of the following BEST describes the Internal Analysis planning tool?
May 15, 2016

calculus
evaluate the definite integrals 1 ∫ root(1+3x) dx 0
May 8, 2016

calculus
evaluate the definite integr 2 ∫ 5/(3+2x) dx 0
May 8, 2016

math
what is 9 minus 3 divided by 1/3 plus 1?
May 7, 2016

Finite Math
A student is making out her schedule for next year. Her list consists of 9 required courses and 12 elective courses. She must take at least 4 courses but cannot take more than 6 courses. In how many ways can she select courses such that she takes at least one elective course?
May 4, 2016

Please help
what is the sum of arithmetic series 2+5+8+...+260?
May 3, 2016

my brother is not learning
Okay, Thank you Reed
May 3, 2016

my brother is not learning
My mom also tried a lot.
May 3, 2016

my brother is not learning
I have a brother who is 5 years old, he is going to UKG. I managed to teach him the alphabet and numbers, but I'm struggling to teach him letter sounds. He is obsessed with TV he will not come to study. I am a middle schooler by the way.
May 3, 2016

calculus
rewrite each summation using the sigma notation. Do not evaluate the sums (a)3 + 4 + 5 + . . . + 93 + 94 (b)9 + 16 + 25 + 36 + . . . + 14
May 2, 2016

calculus
You own a small airplane that holds a maximum of 20 passengers. It costs you $100 per flight from St. Thomas to St. Croix for gas and wages plus an additional $6 per passenger for the extra gas required by the extra weight. The charge per passenger is $30 each if 10 people ...
May 2, 2016

calculus
Find the dimensions of the rectangle with the largest area if the base must be on the x-axis and its other two corners are on the graph of: (a) y=16-x²,-4<=x<=4 (b)x²+y²=1 (c)|x|+|y|=1 (d)y=cos(x),-pi/2<=x<=pi/2
May 2, 2016

calculus
Evaluate lim (1³ +2³ +3³ +…+ n3)/n^4 n →∞ by showing that the limit is a particular definite integral and evaluating that definite integral.
May 2, 2016

calculus
Evaluate π ∫ tan² x/3 dx 0
May 2, 2016

calculus
Use the Fundamental Theorem of Calculus to find G'(x) if: G(x)=∫ up(x²) bottom(1) cost dt
May 2, 2016

calculus
Use the Fundamental Theorem of Calculus to find G'(x) if: /x² G(x)= / cos t dt / 1
May 2, 2016

calculus
I'm having trouble on this question: Find the area of the region in the first quadrant that is bounded above by the curve y= sq rt x and below by the x-axis and the line y=x -2.
May 2, 2016

Language Arts
The answer would be B.
April 26, 2016

Maths Urgent please
Thanks
April 25, 2016

Maths Urgent please
i have no clue
April 25, 2016

Probability
jeff has 8 red marbles, 6 blue marbles, and 4 green marbles that are the same size and shape. he puts the marbles into a bag, mixes the marbles, and randomly picks one marble. what is the probability that the marble will be blue?
April 24, 2016

calculus
Find the maximum value of the function f(x)=(x^2+9x-3) / x^2
April 24, 2016

calculus
Find the critical numbers for the function f(x) = 2x / sqrt(x-1)
April 24, 2016

Urgent help Maths Ms sue
Use binomial series to find the Taylor series about 0 for the function f(x)=(1+x)^-3/5 giving all terms up to the one in x^4. Then use this series and Taylor series for sin x to find the quartic Taylor polynomial about 0 for the function f(x)= sinx/(1+x)^3/5
April 24, 2016

Meteorology
It occurs more frequently in warmer temperatures because of the speed in warmer liquids' molecules is fast enough for there to be many chances to get away or 'escape'. I am not sure if that made sense to you, but evaporation occurs more in warmer temperatures.
April 19, 2016

Life orientation
How can I help? Do you need information about this topic?
April 19, 2016

Spanish
1. (wrong) the answer is - A - 2. correct 3. correct
April 18, 2016

calculus
Find f'x given f(x)= 1/(1+(1/(1+(1/x))))
April 18, 2016

math calculus
Find the intervals on which the function f(x)=x²/³(10-x) is increasing and decreasing. Sketch the graph of y=f(x)and identify any local maxima and minima. Any global extrema should also be identified.
April 18, 2016

Math/algebra
Please reply if my answer has helped you.
April 18, 2016

Math/algebra
I am not sure, but this may help 1. Simplify 60 + -25x = 35x + 20 2. You change the order of the terms at this stag: 60 + -25x = 20 + 35x 3. Solving for variable x. Move the terms containing x to the left side, and the other terms to the right side. 4. Add -35x to both sides ...
April 18, 2016

Language
That Helped
April 18, 2016

dramatic art .tourism. history and math lit
Please post your question in more detail, what can we help you find information about?
April 17, 2016

physics
before 1900 the activity per mass of atmospheric carbon due to the presence of carbon-14 averaged about 0.255bq/g of carbon 1. what fraction of carbon is carbon-14
April 17, 2016

physics
before 1900 the activity per mass of atmospheric carbon due to the presence of carbon-14 averaged about 0.255bq/g of carbon 1. what fraction of carbon is carbon-14
April 16, 2016

chem
thanks Drbob222
April 13, 2016

chem
A sample of hexane was cracked. A sample of 50cm³ of gas was produced. The gas decolorized 4cm³ of 0.23moldm–³ solution of bromine. What % of alkenes was produced?
April 13, 2016

chem
alkene not alien
April 13, 2016

chem
A sample of hexane was cracked. A sample of 50cm³ of gas was produced. The gas decolorized 4cm³ of 0.23moldm–³ solution of bromine. What % of aliens was produced?
April 13, 2016

chemistry
I saw the solution as ..E for 1 molecule is 243kj/mol / 6.022E23 molecules. I don't seem to understand that part.
April 13, 2016

chemistry
calculate the lowest frequency of UV. light which has enough energy to break a Cl-Cl bond. ( bond energy =243kj/mol). I got 7.89E14 but the answer is 6.14E14s–¹. how?
April 13, 2016

volume
what is volume, if base area 56 in2, height 6 in
April 12, 2016

Maths Ms sue
A library opens with a collection of 300 books. During the first week after the opening, an additional ten books are donated to the library’s collection. In each subsequent week, six more books are donated to the library’s collection than were donated in the previous...
April 12, 2016

chemistry
magnessium chloride can be used to distinguish between cabonate and hydrogencarbonate ions. Describe how this is done with experimental observations
April 11, 2016

chemistry
magnessium chloride can be used to distinquish between cabonate and hydrogencarbonate ions. Descrbe how this done with experimental observations
April 11, 2016

Math
For this problem (2)^0 (-2)^0 do I add the exponents? If so then what Would I do with 2 and negative 2
April 9, 2016

Math
For this problem it says to explain why an equilateral scalene triangle is impossible to draw. Would it be because not all three sides will be equal?
April 9, 2016

physics
Periodic waves spread out over the surface of a lake where two women, Jenny and Melissa, are fishing in separate boats 65 meters apart. Each woman's boat bobs up and down 19/min. At a time when Jenny's boat is at a crest, Melissa's boat is at its lowest point, and ...
April 8, 2016

physics
Two tuning forks are sounded together. One has a frequency of 741 Hz and the other a frequency of 715 Hz. Calculate the beat frequency that would be produced.
April 8, 2016

physics
A 3580 Hz tuning fork is sounded at the same time that a note on a piano is struck. You hear 8 beats/s. You loosen the string slightly and now hear 12 beats/s. What is the frequency of the vibrating piano string now after the loosen ing?
April 8, 2016

physics
How much will it cost you (in cents) to operate a 29 Ω electric skillet on a standard 120 V outlet for 5 hours and 36 minutes? The unit price for electrical energy in this case is 7.350 cents/kWh.
April 8, 2016

physics
1. A typical household circuit is capable of carrying 15.0 Amps of current at 120 V before the circuit breaker will trip. How many 1500-W hair dryers can run off one such circuit? In the rush to get ready for lecture, a physics professor leaves the hair dryer described in the ...
April 8, 2016

chemistry
A mixture of 0.2 moles of alcohol A and 0.5 moles of alcohol B has a total vapour pressure of 40 mmHg at 297 K. If the mixture obeys Raoult's law, find the vapour pressure of pure B at 297 K given that the pressure of a pure A is 20 mmHg at 297 K.
April 5, 2016

Biology
1.53
April 2, 2016

Math
what is the distance between points A and E? A is located at (3,4) and E is located at -1 on the x-axis answers: a. 2.8 b. 3.2 c. 4.9 d. 5.7 is the answer A?
April 1, 2016

chemistry
please how do I solve it?
April 1, 2016

chemistry
A certain elementary gas is triatomic and has vapour density 48 . The atomic mass of the gas is (a) 48 (b) 96 (c) 32 (d) 16 ..
April 1, 2016

physics
A radioactive source of a single nuclide emits 2.4-MeV neutrons at the rate of 9200 neutrons per second. The number of atoms in the source is 4.0 ×109. The activity of the source, in nCi, is
March 31, 2016

physics
A radioactive source of a single nuclide emits 2.4-MeV neutrons at the rate of 9200 neutrons per second. The number of atoms in the source is 4.0 ×109. The activity of the source, in nCi, is
March 30, 2016

nuclear physics
how do I solve it?
March 30, 2016

nuclear physics
Neptunium 239 93 Np has a decay constant of 3.40 ×10-6 s-1. A 3.0-mg sample of Np-239 is prepared. The activity of the Np-239 sample, in Ci, is
March 30, 2016

physics
Neptunium 239 93 Np has a decay constant of 3.40 ×10-6 s-1. A 3.0-mg sample of Np-239 is prepared. The activity of the Np-239 sample, in Ci, is
March 30, 2016

physics
A proton is projected at a stationary 6238 Ni aluminum target. The proton momentarily comes to a halt at a distance from the center of an aluminum nucleus, equal to twice the nuclear radius. Assume that the nucleus retains its spherical shape and that the nuclear force on the ...
March 30, 2016

physics
the nuclei Co-57 an odd-even unstable nucleus is often used as a source of radiation in nuclear processes. Show that the nuclei is stable relative to beta plus decay by electron capture
March 30, 2016

Maths
A large school in the UK offers its pupils the opportunity to learn several non-English languages. It turns out that: • 55% of pupils in this school choose to learn French; • of the pupils who learn French, 40% also learn German. (c) Additional information is now ...
March 30, 2016

Hypothesis Testing - maths
Data were collected on the differences in weight gains of 12 people one month after they stopped smoking, compared with their weight at the time when they stopped smoking. The data are given in Table 2. A positive quantity corresponds to a gain in weight, a negative quantity ...
March 29, 2016

Maths - Statistics
A large school in the UK offers its pupils the opportunity to learn several non-English languages. It turns out that: • 55% of pupils in this school choose to learn French; • of the pupils who learn French, 40% also learn German. (a) For pupils in this school, let F ...
March 29, 2016

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