Farohw

Sorry, forgot to put my name :) A∩B means the set of elements that are common (or the same) in two sets: A and B. Sometimes you will have no elements that are the same between two sets and you will indicate this as {} meaning empty set. The symbol ∩ is kn...

9 years ago

Daughter cells are identical to the parent and each other in mitosis.

9 years ago

Photosynthesis is a chain of endothermic reactions. However, during this process energy is not absorbed as heat as in other endothermic reactions. After plants absorb its energy from sunlight then converts it into oxygen and glucose from carbon dioxide an...

9 years ago

Some examples of "Average rate of change" involve calculating miles per gallon, miles per hour, etc. In this problem, you are calculating the average rate of speed which is distance/time: 208/4hours = 52 mph. Therefore, you are correct.

9 years ago

To expand on the previous response, you have to solve through a system of equations: a + c = 2300 15a + 6.5c = 27700 In the first equation, solve for C: c = 2300 - a Then substitute into the second equation: 15a + 6.5(2300 - a) = 27700 15a + 14950 - 6.5a...

9 years ago

Hello Sarita, I'm assuming this is a copy/paste issue the reason why your post is incomplete. This sounds like a mode, mean or median problem. To help you out, Mode is the number that appears most often in a given set. If there are no repeats there is no...

9 years ago

DNA.

9 years ago

% decrease: find the difference 700 - 480 = 220 Difference/Original Amount x 100 is your % decrease: 220/700 * 100 = 31.43%

9 years ago

Use Newton's second law of motion to describe.

9 years ago

I believe the way to solve x + 2y = 8 is, 2y = -x + 8 2y/2 = (-x + 8)/2 y = -x/2 + 4 => y = (-1/2)x + 4 Set the equation to zero: (-1/2)x + 4 = 0 (-1/2)x = -4 Divide both sides by -1/2 to obtain the x value: x = 8 Therefore, B(8,0) is your coordinate.

9 years ago

I think the question should be reworded as: ...If it takes Tom & Jerry 15 days to finish the job, how many days will Tom finish the work? or something along these lines. With that being said, the rate to do a piece of work from each: Tom = 1/3 and Jerry =...

9 years ago

I think the question should be reworded as: ...If it takes Tom & Jerry 15 days to finish the job, how many days will Tom finish the work? or something along these lines. With that being said, the rate to do a piece of work from each: Tom = 1/3 and Jerry =...

9 years ago

We see that Tom is a slow worker from the beginning and working alone will take him 60 days to complete the job.

9 years ago

We see that Tom is a slow worker from the beginning and working alone will take him 60 days to complete the job.

9 years ago

No. Resistivity depends on the resistance of a material not on its dimensions.

9 years ago

WINTER has 6 unique letters. 6P6 = 6!/(6!-6!) = 6!/0! = 720 distinct permutations.

9 years ago

It is obvious that Tom paid more since he paid more for the shirt and had the higher tax. Tom: $22.00 * 0.07 = $23.54 Cousin: $18.00 * 0.04 = $18.72

9 years ago

Sounds like a sequence problem since the question is asking for arithmetic or geometric increases. There are formulas associated with these types of sequences but let's look at the BASIC textbook definitions: In arithmetic sequences each term after the fi...

9 years ago

You can go to Calc101 and click on partial fractions in the upper right hand corner of the page, put in your equation and it will give a step by step solution for free.

9 years ago

% increase: calculate the difference then divide that number by the original amount and multiply by 100. In 2000 - 3250 In 2001 - 3640 3640 - 3250 = 390 (390/3250)*100 = 12% 2001 - 3640 2002 - 4100 4100 - 3640 = 460 (460/3640) * 100 = 12.6% You can answer...

9 years ago

Try, 3x + 5 = 3x + 5 As you can see the equation is equal to itself and if you subtract 3x from both sides you will get 5 = 5. The idea behind infinite solutions is that no matter what number you use for the variable, in this case x, the answer will alway...

9 years ago

Distance between the Earth and Sun is 93,000,000 miles or (150,000,000 km) In scientific notation 9.3 * 10^7 or 1.5 * 10^8. I think you can research the rest.

9 years ago

In error, I told you the common difference varies. That is incorrect. Hence the word, common. CORRECTION: The sequence 2, 3, 5, 9, 17 is neither geometric nor arithmetic even though we add each term after 2 by 1, 2, 4, 8. So 2 + 1 = 3, 3 + 2 = 5, etc. The...

9 years ago

Suppose x is a number. The equation: (1/2)x + 2 = x + 1 Solve, (note: (1/2)x is the same as x/2) x/2 - x = 1 - 2 x/2 - x = -1 2*(x/2 - x) = -1 * 2 x - 2x = -2 -x = -2 x = 2 Verify: If x = 2 then (1/2)x + 2 = x + 1 (1/2)(2) + 2 = 2 + 1 1 + 2 = 2 + 1 3 = 3...

9 years ago

Markup(M) = $35.00 - $31.00 = $4.00 % = $4.00/$31.00 = 0.129 or 12.9%

9 years ago

Markup(M) = $35.00 - $31.00 = $4.00 % = $4.00/$31.00 = 0.129 or 12.9%

9 years ago

For #3. -3p > -48 Divide both sides of the inequality by -3 -3p/-3 > -48/-3 = p < 16 since the left-side of the equation is negative the sign changes.

9 years ago

I should say since the left-side of the equation is negative, the direction of the inequality sign changes.

9 years ago

The next three in the sequence: -16, 32, -64. You are multiplying each number by -2.

9 years ago

Missing info?? How many equal strips did Dan cut?

9 years ago

The equation you will use is y - 80 = 20(x - 2); $280 y - 80 = 20(x - 2) y = 20x - 40 + 80 y = 20x + 40 then factor to get, y = 20(x + 2) let x = 12 since December is the 12th month. y = 20(12 + 2) --> y = 20(14) y = 280

9 years ago

I answered a similar question not long ago. Here is the solution to that: The rate to do a piece of work from each: Tom = 1/3 and Jerry = 1/1 or 1 Add: 1/3 + 1 = 1 1/3 or 4/3 (improper fraction) 4/3 * 15 = 20 This means that it will take 20 pieces of work...

9 years ago

Keep in mind that it takes "Rupesh" three times as long to do the job.

9 years ago

Assuming you mean (⊗ + 5)^2 If (⊗ + 5)^2 = 81 then this would imply that ⊗ = 4 and (4 + 5)^2 = 81. Therefore, (⊗ + 5)^2 + 1 = (4 + 5)^2 + 1 = 82.

9 years ago

If (⊗ + 1)^2 - 3 = 22 then ⊗ = 4 and (4 + 1)^2 - 3 = 25 - 3 = 22. Hence, (⊗ + 1)^2 - 5 = (4 + 1)^2 - 5 = 20

9 years ago

Try the New York Times (nytimes[dot]com) and go to Sections in the upper-left corner of the site and scroll down to magazine. They have plenty of formal essays there and an extensive archive.

9 years ago

Almost forgot, The New Yorker is even better for formal essays :)

9 years ago

Where are the choices? I would guess you will use each letter in the acronym to come up with the subject name. For example, M = Math, E = English, S = Science, T = Technology.

9 years ago

WINTER has 6 unique letters. 6P6 = 6!/(6!-6!) = 6!/0! = 720

9 years ago

(6+5-2)/9 (11-2)/9 9/9 = 1

9 years ago

For the 2nd problem, I believe you are missing an image. Remember, opposite angles of a cyclic quadrilateral is 180° Suppose ∠ACB = 90°and ∠ACD = 50° which is given. Then, ∠DCB = 90° + 50° = 140°. Hence, ∠BAD = 180° - 140° = 40°.

9 years ago

Let α + β = 6 , α β = 4 x^2 -( α + β) x + αβ = 0 x^2 - 6 x + 4 = 0 is your polynomial

9 years ago

The formula you will use for isothermic expansion is: Work(W) = 2.303 RT log(V2/V1) Let R = 8.3 J / mole-K (universal gas constant and V2/v1 = 2/1 = 2. Converting temperature to Kelvins: T = 127°C = 400K Work(W) = (2.3)(8.3)(400)log(2) W = 2.3 x 10^3 J To...

9 years ago

There are a total of 8 socks: 4 white and 4 black. Two are randomly selected. Therefore, 8C2 or C(8,2) = 28 Out of 4 white socks, 2 white socks can be selected in 4C2 ways or C(4,2) = 6. Out of 4 black socks, 2 black socks can be selected in 4C2 or C(4,2)...

9 years ago

There are a total of 8 socks: 4 white and 4 black. Two are randomly selected. Therefore, 8C2 or C(8,2) = 28 Out of 4 white socks, 2 white socks can be selected in 4C2 ways or C(4,2) = 6. Out of 4 black socks, 2 black socks can be selected in 4C2 or C(4,2)...

9 years ago

39.80x + 49.70y = 150,000

9 years ago

6*5*4*3*2*1 = 6! = 720

9 years ago

It might be easier to break-up the fraction then take the derivative of each: (X+x^3)/y ==> x/y + x^3/y Dy/dx = 1/y + 3x^2/y = 3x^2/y

9 years ago

Your textbook should have this: One calorie is equivalent to 4.184 joules or J = 4.18 J/cal. Work done(W) = 4.18 * 500 = 2090J

9 years ago

I remember this from when I majored in Accounting long ago. Word of advice, make sure your post is complete and that you choose your own answer so that a tutor can verify whether it is correct or incorrect. The net operating income determined by the absor...

9 years ago