# Posts by Helper

Total # Posts: 1,844

**AP physics**

See 1st link below under Related Questions. This almost exact problem was answered.

**algebra**

Ann/Sam, none of your problems make sense. I have no idea what you are trying to do.

**algebra**

Ann/Sam, none of your problems make sense. I have no idea what you are trying to do.

**algebra**

Ann/Sam, none of your problems make sense. I have no idea what you are trying to do.

**algebra**

Ann/Sam, none of your problems make sense. I have no idea what you are trying to do.

**foundationd of personal finance**

Pack your lunch at home instead of eating out every day (assuming you work). Bring a thermos of coffee to work instead of stopping at Starbucks.

**Geometry**

V = pi r^2 h units^3 r = 5, h = 4 V = (3.14)(5^2)(4) units^3 V = ?

**Algebra HELP**

In the future, please number each problem. 1. 18/5 2. all values of x ( all real numbers) 3. all values of x ( all real numbers) 4. no solution

**Algebra**

8x^2 - 16xy + 8y^2 Factor out 8 8(x^2 - 2xy + y^2) Now, using the form of, square of a difference a^2 - 2ab + b^2 = (a - b )^2 8(x^2 - 2xy + y^2) = 8(x - y)^2

**Algebra again. Help**

Recheck your problem. As your problem is stated, Reiny is correct.

**Algebra: Help please**

Please see this link for a definition. http://www.mathsisfun.com/definitions/monomial.html

**geometry**

Your question is not clear. "if df equals 300m, find df. round to the nearest tenth." Find df? df = 300m

**calculus--No question**

What is your question?

**P I**

84 - 60 = 24 (24/60) * 100 = % of increase = ?

**Math**

If you expect an answer to your question please put your school subject in the School Subject box.

**MPG**

525 mi /17.5 gal = mi/gal = ?

**Math**

If you expect an answer to your question please put your school subject in the School Subject box.

**notation**

If you mean percent, 5/8 = 0.625 * 100 = 62.5%

**commission rate**

150/3000 = 0.05 * 100 = 5%

**math**

g = grams of 99% cocoa 0.99g = value of 99% cocoa 200 - g = grams of 70% cocoa 0.70(200 - g) = value of 70% cocoa 0.86(200) = value of mixture 0.99g + 0.70(200 - g) = 0.86(200) Solve for g, grams of 99% cocoa 200 - g = grams of 70% cocoa

**To helper -**

I'm sorry, I have been having problems with my email. Soon as my son-in-law arrives home he can check from his computer (somehow?). I've had nothing but problems since I upgraded to Outlook from Outlook Express.

**Algebra**

q = number of quarters 3q - 4 = number of dimes 0.25q = value of quarters 0.10(3q - 4) = value of dimes 0.25q + 0.10(3q - 4) = 7.85 Solve for q, number of quarters 3q - 4 = number of dimes

**Algebra**

45t^2 - 72t + 24 Only 3 can be factored from each term.

**math**

4 2/3 = 14/3 15 * 14/3 = 210/3 = 70 Alternate way 15 * 4 2/3 = 15 * 4 + 15 * 2/3 = 60 + 30/3 = 60 + 10 = 70

**math**

13 1/3 divide by 6 2/9 13 1/3 = 40/3 6 2/9 = 56/9 Dividing is the same as multiplying by the reciprocal (13 1/3)/(6 2/9) = 40/3 * 9/56 = 120/56 = 2 8/56 = 2 1/7 I'm not sure what your question was, but it appears that you arrived at the correct answer.

**pre algebra**

Dividing is the same as multiplying by the reciprocal. (1/2)/(2/3) = 1/2 * 3/2 = 3/4

**algebra**

x = miles walked x + 5.75 = miles jogged(3/4 = .75) x + x + 5.75 = 15 Solve for x, miles walked

**math**

5.1 x 10^-6 Since the exponent is negative, count 6 places to the left from where the decimal point is. 5.1 x 10^-6 = 0.0000051

**Math**

Two Angles are Supplementary if they add up to 180 degrees. 180 - 35.5 = ?

**math**

Since you didn't specify, based on simple interest, 9 1/2% annual rate = 0.095 0.095/360 days = 0.000264 daily rate I = PRT I = 750 * 0.000264 * 200 I = ?

**Calculus**

sec^3 x tan x dx | = integral symbol Rewrite as | sec^2 x sec x tan x dx u = sec x du = sec x tan x | u^2 du 1/3 u^3 + C Substitute back in, u = sec x 1/3 sec^3 x + C

**math--Arianna check your problem**

25 = 5^3x-1 You need to use parentheses. Is it, 5^(3x - 1) ? Or, 5^(3)x - 1 ? Or, ?

**Math- Algebra II**

correct, no solution

**algebra**

x = plan 1 y = plan 2 175x = plan 1 cost 200y = plan 2 cost The two equations are, (Divided by 1000 for easier calculation) x + y = 38 175x + 200y = 7200 Solve these equations simultaneously to find x and y. (if you are correct, x = 16, y = 22)

**math**

5/t^1/4 - 6/t^2/3 I rewrite as, (my preference) 5t^(-1/4) - 6t(-2/3) h' = -1/4 * 5t^(-5/4) - (-2/3 * 6t^(-5/3)) h' = -5/4t^(-5/4) + 12/3t(-5/3) h' -5/4t^(-5/4) + 4t(-5/3) h' = 4/(t^(5/3)) - 5/(t(^5/4))

**accounting**

You also need to do an entry for the difference of 6500.

**Survey of Math 140**

Simple interest 10% = 0.1 /365 = 0.000274 daily interest 3/8 to 5/26 = 79 days 79 * 0.000274 = 0.021646 (79 day interest rate) * $4000 = $86.58 interest this period 5/27 to 7/31 = 65 days 65 * 0.000274 = 0.01781 (65 day interest rate) * $2700 ($4000 - 1300) = 48.08 interest ...

**Math**

(x+1)(4x^2-8x+7) u = x + 1 v = 4x^2 - 8x + 7 Use the product rule, d/dx (uv) = u dv/dx + v du/dx d/dx (uv) = (x+1)(8x-8)+(4x^2-8x+7)(1) You can take it from here

**physics for scientists and engeneers I**

assuming the 27 was really horizontal, then the change in velocity has to be determined. To get 43m high (that is pretty high)... 1/2 m vi^2=mg(43) vi=sqrt (86*9.8) change momentum=massball*deltaV ok,to get deltaV, deltaV=sqrt(86*9.8) j +27i) then force= changemometum/time you...

**Physics**

Doesn't one get a rainbow when a diamond bends light,each color in a slightly different directon?

**Physics**

what do currents do?

**intermediate algebra-check my answer**

You were given the points, (x1, y1) = (-8, -6) and (x2, y2) = (0, 0) y = 3/4 x + b Use one of the given points, for example, (-8, -6) Solve for b -6 = 3/4(-8) + b b = 0 Therefore, the equation is y = 3/4 x + 0 y = 3/4 x I guess I miss-understood you. I didn't realize that ...

**intermediate algebra-check my answer**

y = ax + b m = 3/4 y = 3/4 x + b You need to find b for this equation. Substitute one of the given points into your equation and solve for b. Then use that b value for your equation.

**Calculus (I Truly Need Help) Continued**

From algebra, do you know how to find the inverse? The same method is used. Have you tried to find the inverse?

**math**

(10,-4), (-3,10) Slope m = (y2 - y1)/(x2 - x1) m = (10 + 4)/(-3 - 10) m = 14/-13 = -14/13 = -1.07692

**Math**

Area of circle = pi r^2

**math**

Slope intercept form, y = mx + b (6,4), (-6,-6) m = (-6 - 4)/(-6 - 6) m = -10/-12 = 5/6 To find b, use (6,4) m = 5/6 4 = 5/6 (6) + b 4 = 30/6 + b 4 = 5 + b b = -1 Equation y = 5/6 x - 1

**Geometry**

I'll find one side. Triangle ABC, angle A = 36 side c (hypotenuse) = 9 To find side a (opposite side) sin A = op/hyp = a/c = a/9 sin 36 = a/9 0.5878 = a/9 9 * 0.5878 = a a = 5.2902 Area = 1/2 bh In this case, (right triangle) A = 1/2 ab (side a, side b) I found side a, you...

**Geometry**

Triangle ABC, angle A = 55 deg side b = 43 tan A = op/adj = a/b = a/43 tan 55 = a/43 a = 43 * 1.4281 a = 61.4083 cos 55 = adj/hyp = b/c = 43/c cos 55 = 43/c c = 43/0.5736 c = 74.9651 I'll let you finish (not sure what 'length of triangle' is) Length of triangle = ?

**exponents**

Please give an example.

**geometry**

Area = Lw Diagonal d^2 = L^2 + w^2 26^2 = L^2 + 10^2 676 = 100 + L^2 L^2 = 576 L = 24 L = 24, w = 10 A = Lw A = 24(10) A = ?

**matemáticas**

Is this the question? The rectangular base perimeter of a piano is 16 feet. What are all the possible dimensions of the piano, using only whole numbers of feet?

**math**

This is a dumb question (my opinion only). If he has an empty stomach, wouldn't the minimum volume be the volume of the pizza? This is a complete guess. Sphere volume = 4/3 pi r^3

**Algebra**

What are you trying to do with these equations? Please post the exact directions to your problem.

**College algebra**

See your post below for a detailed example of how to complete this problem.

**College algebra**

Slope-intercept form of the equation y = mx + b m = slope = 6/7 y = 6/7 x + b To find b, use point (0,3), where x = 0 and y = 3. Solve for b. y = 6/7 x + b 3 = 6/7(0) + b 3 = 0 + b b = 3 So, the equation is y = 6/7 x + 3

**Math**

x = people in audience 1/2 x = left 1st 1/3 (1/2 x) = 1/6 x = left next 1/4 (1/3)(1/2)x = 1/24 x = left last x - (1/2 x + 1/6 x + 1/24 x) = 9 Solve for x

**English**

I guess you don't want your question answered. You waste tutor's time when you don't follow directions and put your school subject in the School Subject box.

**math**

6xy is the correct answer.

**algebra**

3x + 4 > 9, Solve the inequality 3x + 4 > 9 3x > 5 x > 5/3 = 1.67 Therefore, for x to be a solution, x > 1.67 You should be able to finish the problem from here.

**math**

3^5 + 3^5 + 3^5 243 + 243 + 243 = ?

**algebra**

V = 1/3*6300*7 Multiply both sides by the denominator 3 3v = (6300)(7) 3v = 44,100 v = 14,700

**geometry**

Draw a rhombus with the diagonals. 4 right triangles are formed. The intersection of the diagonals of a rhombus form 90 degree (right) angles (property of a rhombus). The diagonals of a rhombus bisect each other. This means that they cut each other in half. So, each of the ...

**maths**

(0.008)^x = 1/25 x log 0.008 = log 1/25 -4.828314 x = -3.218876 x = -3.218876/-4.828314 x = ?

**Math**

x^3 = 27 Take cube root of both sides x = 3 Because, 3 * 3 * 3 = 27 I'm not sure what your 2nd problem is. Is your problem, x^4 = 16 ? If so, x^4 = 16 Take the forth root of both sides x = +- 2 Because, 2 * 2 * 2 * 2 = 16 Or, -2 * -2 * -2 * -2 = 16 FYI, 4^3 = 4 * 4 * 4 = ...

**Math Trivia**

The web link provided gave the answer. I pasted it below. The calculation was done wrong. The 2 dollars should not be added to 27 but subtracted to get 25 dollars. Put in another way, $25 is with the owner of the Hotel, each of the 3 guests received $1 from the clerk, and he ...

**math**

Answered in previous post.

**math**

If I am picturing this correctly, a right triangle is formed, with the diagonal of 75' being the hypotenuse. x = one leg (vertical height) x + 15 = other leg (horizontal distance) Use the Pythagorean theorem, c^2 = a^2 + b^2 75^2 = x^2 + (x + 15)^2 Solve for x

**TRIG**

2 sin Î¸ + 3 = 2 2 sin Î¸ = -1 sin Î¸ = -1/2 Î¸ = ?

**algebre**

x = shortest side 2x = 2nd side x + 30 = 3rd side x + 2x + x + 30 = 102 Solve for x, and use to determine the dimensions as defined above

**math**

(7x + 4)(2x + 4) Use FOIL-First, Outer, Inner, Last First-7x * 2x = 14x^2 Outer-7x * 4 = 28x Inner-4 * 2x = 8x Last-4 * 4 = 16 Put together, 14x^2 + 28x + 8x + 16 Combine like terms, 14x^2 + 28x + 8x + 16 14x^2 + 36x + 16 All the problems you have posted are done the same way...

**math**

See your post with the detailed answer of how these type problems are done. All the problems you posted are done the same exact way. Time to get to work.

**math**

See your post with the detailed answer of how these type problems are done. All the problems you posted are done the same exact way. Time to get to work.

**math**

See your post with the detailed answer of how these type problems are done. All the problems you posted are done the same exact way. Time to get to work.

**math**

See your post with the detailed answer of how these type problems are done. All the problems you posted are done the same exact way. Time to get to work.

**math**

You don't state if the interest is simple or compounded. For simple interest, I = PRT (Interest = Principal*Rate*Time) I = 300 * 0.03 * 30 I = ?

**college Trig**

Triangle ACB, C = 70 deg, a = 70, b = 50 find side c Use Law of Cosines--Case III (Given two sides and the included angle) c^2 = a^2 + b^2 - 2ab cos C c^2 = 70^2 + 50^2 - 2(70)(50) cos 70 Solve for c

**algebra**

28x^2 - 196xy + 343y^2 7(x^2 - 28xy + 49y^2) 7(2x - 7y)(2x - 7y) 7(2x - 7y)^2

**finance**

I'm not sure either Ms. Sue after seeing your answer. I multiplied out 10yrs at your rate and your answer is closer. I have to think about this more.

**finance**

1.55 - .79 = .76 increase in 10 yrs 0.76/0.79 = 0.962025 = 96.2025% increase in 10 years 96.2025%/10 = annual growth rate

**math**

x = larger number y = smaller number xy = 50 x/y = 2 or x = 2y Substitute, x = 2y in xy = 50 2y * y = 50 2y^2 = 50 y^2 = 25 y = +- 5 To find x, Substitute y = +- 5 in either equation xy = 50 5x = 50 x = 10 -5x = 50 x = -10 Numbers are 10, 5 or -10, -5

**math**

1/4 + 3/10 First, find the common denominator, 20. 5/20 + 6/20 = ?

**statistics**

y = 100 + 1.2x 130 = 100 + 1.2x Solve for x 30 = 1.2x x = 30/1.2 = ?

**math**

Please check your 1st post for an answer before reposting. This question was answered earlier today.

**For bobpursley**

I will email as soon as I can. My email is not working at this moment and I don't know why. My son-in-law is looking into it right now.

**algebra**

See your 1st post below.

**algabra**

For multiplication, the rule is a(bc) = (ab)c In numbers, this means 2(3×4) = (2×3)4 Can you do your problem now?

**math**

(8,-4) and (-7,9). Midpoint =(x1 + x2)/2, (y1 + y2)/2 Mx = (8 + -7)/2 = 1/2 = 0.5 My = (-4 + 9)/2 = 5/2 = 2.5 Midpoint (0.5, 2.5)

**algebra**

(6/-2)/-1/4 = -3 * -4/1 = 12 Division is the same as multiplying by the reciprocal.

**algebra**

5p + 15 What factors do both expressions have in common, 5. 5p + 15 = 5(p + 3)

**algebra**

2/9 * 2y/2y = 4y/18y

**Algerbra**

You're welcome :)

**Algerbra**

f(x) = -4x - 3 The slope-intercept form of an equation, where m = slope and b = y-intercept. y = mx + b Since your equation is already in the slope-intercept form, y = mx + b y = -4x - 3 Slope m = -4 y-intercept b = -3

**Algebra**

Look below "Post Answer" button. See "Related Questions", click the first link "Algebra". This almost exact question is answered there.

**Algebra**

Check your equation. I think it should be y = -1777x + 27,153 You have +1777x

**Algebra 1**

y = 3x - 1 y = -x + 1 Find points for each equation, then plot the points for each, draw a line connecting these points for each equation. The point of intersection is the solution. y = 3x - 1 x = 0, y = -1 x = -1, y = -4 x = 1, y = 2 x = 1/2, y = 1/2 So, you would plot the ...

**geometry**

tan 8 degrees = 0.1405 0.1405 * 100 = 14.05% grade

**Algebra**

You're welcome :)

**Algebra**

D = RT (Distance = Rate * Time) 120 = rate of Train B T = time of Train B 120T = distance of Train B 100 = rate of Train A T + 0.25 = time of Train A (5:25 - 5:10 = 15 min = 60/15 = 0.25 h) 100(T + 0.25) = distance of Train A Distances are equal 120T = 100(T + 0.25) 120T = ...

**algebra**

Slope = rise/run = 8/29 = ?