Tuesday

March 3, 2015

March 3, 2015

Total # Posts: 1,731

**Algebra**

f(x)=(4x-1)/(x+7) y = (4x-1)/(x+7) Rewrite as: y = (4x)/(x+7)- 1/(x+7) Multiply both sides by x+7: (x + 7)y = 4x - 1 Expand out terms of the left hand side: xy + 7y = 4x - 1 xy - 4x = -7y - 1 x(y - 4) = -7y - 1 Divide both sides by y - 4: x = (-7y - 1)/(y - 4) f^-1 = (-7x - 1...
*February 2, 2011*

**Math geometry**

A line that bisects an angle divides it into two congruent parts. So if ray AH bisects <GAB, then angle GAH = angle BAH ? You are saying <GAH is acute and <BAH is obtuse? Does the problem state ray AH bisects <GAB or are your looking at a picture and YOU are making...
*February 2, 2011*

**Math geometry**

Need more information. Recheck your problem.
*February 2, 2011*

**Algebra**

Ignore my answer. I did not notice that one measurement is in feet. I compared inches to feet, which you cannot do.
*February 2, 2011*

**Algebra**

Set up a ratio. 10 : 100 = 10/100 = 1/10 The model is 1/10 the size of the Endeavour.
*February 2, 2011*

**,Math 7**

You're welcome :)
*February 2, 2011*

**,Math 7**

Question 2 You are correct. Megan starts with $24.75. She should leave at 11:15. Look at the part under question 4 ABOVE where I say "To check this".
*February 2, 2011*

**Algebra- is my answer right**

The answer is 2 < x < 4 I don't know how to solve this. I have tried various web sites for help. I used an online calculator for the answer but the calculator does not have the steps to solve. I've been trying this since you posted yesterday. Hoping a math tutor ...
*February 2, 2011*

**math**

y = 10h if h = number of hours worked then, $10
*February 2, 2011*

**Math geometry **

You're welcome :)
*February 2, 2011*

**Math geometry **

The midpoint of BC is M(-10,-16) B(-1,8) C = ? xm = 1/2(x1 + x2), ym = 1/2(y1 + y2) -10 = 1/2(-1 + x2) -20 = -1 + x2 -19 = x2 -16 = 1/2(8 + y2) -32 = 8 + y2 -40 = y2 C(-19, -40) check my math
*February 2, 2011*

**Math (HELP PLEASE)**

Set-up equations 1) x - 7 + 3 + 6 - 8 + 1 - 6 = 3 x + 10 - 21 = 3 x - 11 = 3 x = 13 2) x - 12.00 + 15.00 - 7.00 - 8.50 + 8.00 + 2.00 = 22.25 You solve 3) Miguel x + 15 - 4 + 6 - 17 + 22 + 14 = 40 Yoshi x + 12 - 4 + 33 - 7 = 40 You solve 4) 3:35--plane 2:00--less 2h 1:35--check...
*February 2, 2011*

**math**

Arithmetic sequence a, a + d, a + 2d, a + 3d, ...a +(n - 1)d 1)a3 = 10, a7 = 20 Since these are 4 places apart (7 - 3 = 4) a7 = a3 + 4d 20 = 10 + 4d 10 = 4d d = 10/4 = 2.5 So, the common difference, d = 2.5 To find the 1st term a, a3 = a + 2d 10 = a + 2(2.5) 10 = a + 5 a = 5 2...
*February 2, 2011*

**algebra**

3x^3-2x^2y-8xy^2 x(3x^2 - 2xy - 8y^2) x(x - 2y)(3x + 4y)
*February 2, 2011*

**Psych**

I think Ms. Sue said this. Where are the quotes?
*February 2, 2011*

**Business Communication**

Is this a test? The tutors will not complete your homework for you. The tutors will check or offer comments on YOUR work.
*February 2, 2011*

**Algebra **

This isn't a question. This is a statement, telling you why a solution to a word problem should be checked to the original wording of the problem versus the equation written for the problem. This is because the equation, derived from the wording of the problem, could be ...
*February 2, 2011*

**algebra**

If x = -70 -x = 70 Think of '-' meaning -1 -1x = 70 Divide both sides by -1 -1x/-1 = 70/-1 x = -70
*February 2, 2011*

**Math**

You're welcome :)
*February 2, 2011*

**Math**

80% = 30 .80x = 30 x = 30/.80 x = 37.5 total games 20% of 37.5 = 7.5 games lost 30 wins 7.5 lost 37.5 total games Not sure what you are trying to do in Excel.
*February 2, 2011*

**Physics**

See links below under Related Questions. This almost exact problem was answered.
*February 2, 2011*

**Algebra**

the quotient of 12 and the number, x 12/x = quotient x = -3 12/-3 = ?
*February 2, 2011*

**Calculus**

A ball is shot straight up into the air with initial velocity of 47 ft/sec Free fall, s in ft, t in sec s = s0 + v0t - 16t^2 height, s0 = 0 velocity, v0 = 47 s = 0 + 47t - 16t^2 s = 47t - 16t^2 Instantaneous velocity, v v = ds/dt = v0 - 32t v = 47 ft/sec v = 47 - 32t To find ...
*February 2, 2011*

**Math**

360 deg = 1 revolution 1 min = 60 sec 120/360 = 1/3 rev/sec 1/3 per/s * 60 sec/min = ?
*February 2, 2011*

**College Algebra**

3x^2- 12x - 24 = 0 Solve the quadratic equation by completing the square: Divide both sides by 3: x^2 - 4x - 8 = 0 Add 8 to both sides: x^2 - 4x = 8 Add 4 to both sides: x^2 - 4x + 4 = 12 Factor the left hand side: (x - 2)^2 = 12 Take the square root of both sides: |x - 2| = 2...
*February 2, 2011*

**MATH**

Please don't type in all caps. It is rude. On the internet, all caps is equivalent to shouting. 21x^7 and 147x^9 LCM is 21x^7
*February 1, 2011*

**geometry**

You need to draw right triangle ABC. Angle A (vertex angle) = 3 deg side b (base) = 60 mi side c = hypotenuse side a (distance of climb) = unknown tan A = op/hyp = a/b = a/60 tan 3 = a/60 0.0524 = a/60 60(0.0524) = a 3.144 mi = a So the plane climbed 3.144 miles To find how ...
*February 1, 2011*

**Calc**

Looks good to me!
*February 1, 2011*

**calculus**

x^2/(x+1) dx | = integration symbol |x^2/(x + 1) dx Using long divsion |x - 1 + 1/(x + 1) dx |x dx - |1 dx + |1/(x + 1) dx 1/2 x^2 - x + ln |x + 1| + C
*February 1, 2011*

**geometry**

Please do not repost a question without first checking your original post. See your 1st post. This question was answered.
*February 1, 2011*

**Algebra**

You need parentheses. x - (4/-x) + 2 > 0 ? (x - 4)/(-x + 2) > 0 ? Please, re-state the problem with parentheses.
*February 1, 2011*

**math**

129/10 = ?
*February 1, 2011*

**Algebra**

You're welcome
*February 1, 2011*

**Algebra**

(7+u)(3u-1)=0 7 + u = 0 u = -7 3u - 1 = 0 3u = 1 u = 1/3
*February 1, 2011*

**geometry**

Sum of measures of interior angles of a polygon of n sides = (n - 2)* 180 deg (53 - 2)*180 = 51*180 = ?
*February 1, 2011*

**Algebra B**

imaginary number
*February 1, 2011*

**Algebra- is my answer right**

(2b^-4 c^6)^5 = 32c^(30)/(b^(20))
*February 1, 2011*

**Math**

x = gal of 30% solution .30x = value of 30% solution 150 - x = gal of 60% solution .60(150 - x) .50(150) = mixture .30x + .60(150 - x) = .50(150) Solve for x, gal of 30% solution 150 - x = gal of 60% solution
*February 1, 2011*

**Algebra- is my answer right**

(x^2+4x+4)+(y^2-2y+1)=20+16+4 Should be, (x^2 +4x + 4)+(y^2 - 2y +1 )= 20 + 4 + 1 (x^2 +4x + 4)+(y^2 - 2y +1 )= 25 (x + 2)^2 + (y - 1)^2 = 25
*February 1, 2011*

**algebra**

14 - 20x > 14 - 6x -14x > 0 When you divide by a negative, the sense of the inequality is reversed x < 0
*February 1, 2011*

**Math**

Your question is?
*February 1, 2011*

**Math**

Please put your subject in the School Subject box. w = width 4w + 1 = length P = 2w + 2L 62 = 2w + 2(4w + 1) Solve for w
*February 1, 2011*

**trig**

1 half x ? What does this mean?
*February 1, 2011*

**Finance**

$5,000 @ 5% for 5 yrs then 7% for 5 yrs I = PRT I = 5000(0.05)(5) I = 250(5) I = 1250.00 5000 + 1250.00 = 6250.00 I = PRT I = 6250(0.07)(5) I = 437.50(5) I = 2187.50 6250.00 + 2187.50 = 8437.50
*February 1, 2011*

**Finance**

Is the interest compounded? Compounded daily, quarterly, yearly, etc ?
*February 1, 2011*

**Finance**

What do the numbers 0,1,2,3,4,5 represent?
*February 1, 2011*

**Finance**

A(t) = P(1 + r/n)^nt P = 50,000 r = 0.076 n = 4 (quarterly) t = 4.5 A(4.5) = 50000(1 + 0.076/4)^(4(4.5)) A(4.5) = 50000(1 + 0.019)^(18) A(4.5) = 50000(1.019)^(18) A(4.5) = 50000(1.40325) A(4.5) = 70,162.50 50,000 + 70,162.50 = 120,162.50
*February 1, 2011*

**Finance**

A(t) = Pe^rt A(t) = 100,000(2.718281)^((0.056 * 3.5)) A(t) = 100,000(2.718281)^0.1960 A(t) = 100,000(1.216527) A(3.5) = 121,652.70 100,000 + 121,652.70 = 221,652.70
*February 1, 2011*

**accounting**

Is there a Stockholders equity acct? DB Cash CR Stockholders Equity
*February 1, 2011*

**Physics**

Incomplete problem
*January 31, 2011*

**math**

x = 1st odd integer x + 2 = 2nd odd integer x + 4 = 3rd odd integer x + 6 = 4th odd integer x + x + 2 + x + 4 + x + 6 = -104 4x + 12 = -104 4x = -116 x = -29 -29, -27, -25, -23
*January 31, 2011*

**math**

You are welcome :)
*January 31, 2011*

**math**

Set up a ratio 234 : 100 = 400 : x 234/100 = 400/x cross multiply 234x = 40,000 x = 170.94
*January 31, 2011*

**Complex Numbers**

You are welcome
*January 31, 2011*

**Complex Numbers**

x^2 - 6x + 25 = 0 Subtract 25 from both sides: x^2 - 6x = -25 Add 9 to both sides: x^2 - 6x + 9 = -16 Factor the left hand side: (x-3)^2 = -16 Take the square root of both sides: |x - 3| = 4i Eliminate the absolute value: x - 3 = -4i or x - 3 = 4i Add 3 to both sides: x = 3 - ...
*January 31, 2011*

**geometry**

Area of an equilateral triangle A = 1/4(s^2 * (sqrt(3))
*January 31, 2011*

**Geometry**

Is this the exact wording of your problem? Are you looking at a picture? An angle doesn't have 'sides'. Two lines or rays form an angle. Where are you getting three sides?
*January 31, 2011*

**math**

15 gal/tank x 25 mpg = 375 miles/tank 2500 mi / 375 per tank = 6.67 tank fills = 7 tank fills (Joe always fills tank) 15 gal per tank x 7 tank fills = 105 gal 105 gal x 2.99/gal = $313.95 gas expense
*January 31, 2011*

**math**

3 gal = 12 quarts Each scoop makes 3 quarts 12 quarts / 3 quarts per scoop = 4 scoops
*January 31, 2011*

**math**

V = pi r^2 h V = (3.14)(17^2)(3) V = ?
*January 31, 2011*

**math**

V = pi r^2 h V = (3.14)(6^2)(12) V = ?
*January 31, 2011*

**math**

You must have a typo. None of the choices are correct. starting at5:380p.m ?
*January 31, 2011*

**Math (Algebra 2)**

x^4 + 8x^2 - 20 (x^2 - 2)(x^2 + 10)
*January 31, 2011*

**ap calculus**

By Theorem ∫ e^x dx = e^x + C
*January 31, 2011*

**Geometry**

Perimeter = 36 36 - 18 longest side = 18 This would mean that the remaining TWO sides total 18. The length of any side of a triangle will always be less than the sum of the lengths of the other two sides and greater than the difference of the lengths of the other two sides. 18...
*January 31, 2011*

**algebra**

3.20x = value of blooming annuals 3.20 each plant * x number of plants = ttl cost 1.50y = value of non-blooming annuals 1.50 each plant * y number of plants = ttl cost 3.20x + 1.50y = 49.60
*January 31, 2011*

**algebra**

24 is the total number of plants. x = number of blooming annuals y = number of non-blooming annuals x + y = 24
*January 31, 2011*

**algebra**

"write a linear system of equations" This is a linear system of equations. You can use x and y instead of n and b. x = number of blooming annuals y = number of non-blooming annuals 3.20x = value of blooming 1.50y = value of non-blooming x + y = 24 3.20x + 1.50y = 49....
*January 31, 2011*

**algebra**

b = number of blooming annuals n = number of non-blooming annuals 3.20b = value of blooming 1.50n = value of non-blooming b + n = 24 3.20b + 1.50n = 49.60 Solve the system
*January 31, 2011*

**algebra**

Multiply by -5 (-3x - 4y = 21) Multiply by 4 (8x - 5y = -9) 15x + 20y = -105 32x - 20y = -36 47x + 0 = -141 47x = -141 x = -3 8x - 5y = -9 x = -3 8(-3) - 5y = -9 -24 - 5y = -9 -5y = 15 y = -3
*January 31, 2011*

**Calculus**

I just looked at the graph. You want the area from x = 0 to x = 1. | = integrate symbol | x^9(1 - x) | x^9 - x^10 Then plug in x, from 0 to 1.
*January 31, 2011*

**Calculus**

Were you given (a,b) values? From x = ? to ?
*January 31, 2011*

**Math**

Do you mean, ((cube rt(625y))^3 z^7 ? If so, ((cube rt(625y))^3 z^7 = 625y z^7
*January 31, 2011*

**math**

Do you have a choice of dimensions?
*January 31, 2011*

**Finance**

Income----------46,660 Interest-----------225 Dividends-----------80 Income Adj-------1,150 Sub Total-------48,115 Less Item Ded----7,820 Sub Total-------40,295 Less Exempt------3,400 Taxable Income--36,895 Check my math
*January 31, 2011*

**Finance**

See later post above.
*January 31, 2011*

**math**

b = price of burgers d = price of dogs 2b + 5d = 8.00 5b + 2d = 9.50 Solve simultaneously
*January 31, 2011*

**parts of speech**

What is huour? Is this humor?
*January 31, 2011*

**Geometry**

P = 2L + 2w Since this is a square, L = w P = 2(0.66) + 2(0.66) P = 1.32 + 1.32 P = ?
*January 31, 2011*

**math**

n = number of adults 6.80n = value of adults 387 - n = number of children 3.40(387 - n) = value of children 6.80n + 3.40(387 - n) = 2444.60 Solve for n = number of adults 387 - n = number of children
*January 31, 2011*

**Math**

n = number of ones 1n = value of ones 68 - n = number of fives 5(68 - n) = value of fives n + 5(68 - n) = 172 n + 340 - 5n = 172 -4n = -168 n = 42 n = 42 ones = 42.00 68 - n = 26 fives = 130.00 68 bills = 172
*January 31, 2011*

**Statistic**

Delisha/James, please see your 1st post at 1:21 am under "James". Your post was answered there.
*January 31, 2011*

**finance**

x = total customers need to buy .03x = 840 x = 28,000
*January 31, 2011*

**finance**

$8000 add on interest rate of 11% 8000 x .11 = 880 add on interest/yr 880/yr x 4/yrs = 3520 3520/2 = 1760 1760 total interest on loan 1760 add on interest added to principal 8000 principal + 1760 towards principal = 9760 total loan principal 9760/48 mo = 203.33/month payment ...
*January 31, 2011*

**finance**

18% APR -How is this compounded? Yearly, daily, quarterly, etc?
*January 31, 2011*

**college algebra**

5 + 2(4y - 4) = 3(2y - 1) 5 + 8y - 8 = 6y - 3 8y - 3 = 6y - 3 2y = 0 y = 0
*January 31, 2011*

**math**

Put the words into an equation or mathematical expression. 34 multiplied by d 34 times d 34 x d 34d
*January 30, 2011*

**finance**

I = PRT (Interest = Principal x Rate x Time) 13.2% = .132 6 mo = .5 yr I = 1500 x .132 x .5 I = 198 x .5 I = 99 I don't know what you mean by cost? Interest is a form of 'cost' for the loan.
*January 30, 2011*

**Math**

Slope of the curve at, y = x^6 at x = -3 y' = 6x^5 at x = -3 6(-3)^5 = -1458
*January 30, 2011*

**AP Psychology**

Is this a typo? hueristic?
*January 30, 2011*

**Excel**

I'm not sure I'm following you. Do you just want the total 39.60 in the total column? If so, go to Cell E (col E) and click on 'Auto Sum'. One of the choices are "More Functions". Click on that. A box will come up. Type "Product" in that box...
*January 30, 2011*

**Excel**

You don't want a sum, you want a product. Use auto sum button, and choose more functions, put multiply or product in the search box and choose 'Product'.
*January 30, 2011*

**math**

Please check one of your previous posts. You have posted this exact question 4 times today. It has been answered by 3 different tutors. Exactly what is it that you do not understand?
*January 30, 2011*

**algebra **

-2/5 x = 6/35 Multiply both sides by 35 -14x = 6 x = -6/14 = -3/7
*January 30, 2011*

**algebra 1a**

Assuming you want to solve these simultaneously. 9m + n = 22 m - 3n = 18 To eliminate variable n, mulyiply the first equation by 3 3(9m + n = 22) = 27m + 3n = 66 Now add these two equations together 27m + 3n = 66 m - 3n = 18 28m + 0 = 84 28m = 84 m = 3 Substitute m = 3 in m - ...
*January 30, 2011*

**math**

V = Lwh w = width w - 2 = height w + 4 = length 8(w + 4) = V 8(w + 4) = w(w - 2)(w + 4) Solve for w
*January 30, 2011*

**physics**

thaokieu, the tutors are not here to do YOUR homework. You have to try to solve these yourself. Post your work for each problem and someone will help if you are stuck.
*January 30, 2011*

**Pre-Calculus-Trig**

Chloe, the tutors are not here to do YOUR homework. You have to try to solve these yourself. Post your work for each problem and someone will help if you are stuck. It helps if you draw a picture. The problems I've done for you today all involve right triangles. So read ...
*January 30, 2011*

**algebra 1a**

4(8-2x)+2x<5(9+3x) 32 - 8x + 2x < 45 + 15x 32 - 6x < 45 + 15x -21x < 13 When dividing by a neg number, the sense of the inequality is reversed x > -13/21
*January 30, 2011*

**Pre-Calculus-Trig**

Draw a triangle. The the road would be the base, which is 1 mile or 5280 feet and the side opposite angle A would be 140. You need angle A. You have side a = 140 feet, and side b = 5280 feet. tan A = opp/adj = a/b = 140/5280 tan A = 140/5280 = ? arctan ? = angle A
*January 30, 2011*

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