# Posts by helper

Total # Posts: 1,859

**Math**

You're welcome :)

**Math**

Plan A: Salary $750 + .10 of sales Plan B: Salary $1,000 + .08 of sales > $2,000 x = dollar amt of sales 750 + .10x > 1000 + .08(x - 2000) 750 + .10x > 1000 + .08x - 160 750 + .10x > 840 + .08x 0.02x > 90 x > 4500 Plan A better when sales > $4500

**geometry**

Not enough info. I don't have the figure to look at. Where is JN? Where is JL? Where is KL? Is this a triangle, a square, etc? Without a detailed description, your question cannot be answered.

**Math**

52/16 = 105/28 The concept is the same as reducing fractions. Do you know how to reduce fractions? Example: 6/12 = 1/2 in lowest terms 25/15 = 5/3 in lowest terms This is what you need to do to your problem.

**math - please help**

Please see answer I pasted below. This question was answered by Damon yesterday. math - Damon, Wednesday, February 2, 2011 at 7:40pm 1 1 1 1 1 2 1 1 3 assuming at least 3 greeting card choices

**algebra 1**

x = miles Candice drove 2x = miles Marcus drove x + 2x = 66 = miles driven together 3x = 66

**algebra**

FYI-"algabra" is not how you spell algebra. 3x^2- 12x - 24 = 0 This equation cannot be solved by factoring. Use the Quadratic Formula, or the method of completing the square. Here is the quadratic formula. x = (-b +- (sqrt(b^2 - 4ac)))/2a 3x^2 - 12x - 24 = 0 a = 3, b...

**Math**

You question is not clear. Are all these age problems based on the 10 year old, 55 year old and 75 year old or are these separate problems? Are these ages three different people? For example, "at my age of 55, in years, how old was the older person of 75 when I was born?&...

**Physics**

Please put your school subject in the School Subject box.

**physics**

See the 3rd link below under Related Questions. A similar question was answered for (a).

**math**

6 = 14 - 2x add -14 to both sides 6 + -14 = 14 + -14 - 2x -8 = -2x Divide both sides by -2 -8/-2 = -2x/-2 4 = x x = 4

**physics**

See links below under related questions. Similar problems were answered.

**math**

Pay attention. Do as many practice problems as you can a night. If you do not understand a certain math concept, ask for help. Practice, study and repeat as needed.

**math**

D = RT (Distance = Rate x Time) R = D/T 35 min = .58 hour (35/60) D = 25 mi, T = .58 h R = 25/.58 = 43.10 mph to nearest mph = 43 mph

**math**

Don't listen to emma. She/he is wrong.

**math**

22-2[5+3(6-1)] Remove the inner most parentheses first 22-2[5+3(5)] Perform the inner most multiplication next 22 - 2[5 + 15] Do addition inside parentheses 22 - 2(20) Perform theultiplication 22 - 40 Subtract -18

**physics**

You're welcome :)

**physics**

See first link below under Related Questions. A very similar problem was answered.

**math**

5z+10(-z+14)=95 5z - 10z + 140 = 95 -5z = -45 z = ?

**alg and trig**

If you mean, (you should use parentheses) 6x^3-5x^2+15x+5 / (2x^2-x+3) Use polynomial long division, Here's the answer to check to your long division, 6x^3 - 5x^2 + 15x + 5/(2x^2 - x + 3)

**math**

If you mean, (5x^3 * y^4)/(14x^5 * y^-8)= 5y^12/(14x^2)

**algebra**

Your problem is not clear. What are you dividing?

**math**

20 + 40 = 60

**math**

Square X, s = side Area, A = s^2 100 = s^2 Take square root of both sides 10 = s Square X, s = side Perimeter, P = 4s s = 10 P = 4(10) P = 40 Square Y, s = side Perimeter of Sq. Y = 1/2 Sq. X Perimeter of Sq X = 40, P = 1/2 (40) = 20 P = 4s 20 = 4s s = 5 Square Y, side = s ...

**math**

Yes, Damon is right. A(5) is the total value. I meant to put, $18,500 + 4610.26 Interest = $23,110.26 after 5 years

**math**

$18,500 at 4.5% compounded semiannually for 5 years A(t) = P(1 + r/n)^nt A(5) = 18500(1 + 0.045/2)^(2(5)) A(5) = 18500(1 + 0.0225)^10 A(5) = 18500(1.0225)^10 A(5) = 18500(1.24920) A(5) = 23110.26 interest 18,500 + I = total value after 5 yrs

**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...

**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...

**Math geometry**

Need more information. Recheck your problem.

**Algebra**

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

**Algebra**

Set up a ratio. 10 : 100 = 10/100 = 1/10 The model is 1/10 the size of the Endeavour.

**,Math 7**

You're welcome :)

**,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".

**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 ...

**math**

y = 10h if h = number of hours worked then, $10

**Math geometry**

You're welcome :)

**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

**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...

**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...

**algebra**

3x^3-2x^2y-8xy^2 x(3x^2 - 2xy - 8y^2) x(x - 2y)(3x + 4y)

**Psych**

I think Ms. Sue said this. Where are the quotes?

**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.

**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 ...

**algebra**

If x = -70 -x = 70 Think of '-' meaning -1 -1x = 70 Divide both sides by -1 -1x/-1 = 70/-1 x = -70

**Math**

You're welcome :)

**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.

**Physics**

See links below under Related Questions. This almost exact problem was answered.

**Algebra**

the quotient of 12 and the number, x 12/x = quotient x = -3 12/-3 = ?

**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 ...

**Math**

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

**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...

**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

**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 ...

**Calc**

Looks good to me!

**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

**geometry**

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

**Algebra**

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

**math**

129/10 = ?

**Algebra**

You're welcome

**Algebra**

(7+u)(3u-1)=0 7 + u = 0 u = -7 3u - 1 = 0 3u = 1 u = 1/3

**geometry**

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

**Algebra B**

imaginary number

**Algebra- is my answer right**

(2b^-4 c^6)^5 = 32c^(30)/(b^(20))

**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

**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

**algebra**

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

**Math**

Your question is?

**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

**trig**

1 half x ? What does this mean?

**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

**Finance**

Is the interest compounded? Compounded daily, quarterly, yearly, etc ?

**Finance**

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

**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

**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

**accounting**

Is there a Stockholders equity acct? DB Cash CR Stockholders Equity

**Physics**

Incomplete problem

**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

**math**

You are welcome :)

**math**

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

**Complex Numbers**

You are welcome

**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 - ...

**geometry**

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

**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?

**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

**math**

3 gal = 12 quarts Each scoop makes 3 quarts 12 quarts / 3 quarts per scoop = 4 scoops

**math**

V = pi r^2 h V = (3.14)(17^2)(3) V = ?

**math**

V = pi r^2 h V = (3.14)(6^2)(12) V = ?

**math**

You must have a typo. None of the choices are correct. starting at5:380p.m ?

**Math (Algebra 2)**

x^4 + 8x^2 - 20 (x^2 - 2)(x^2 + 10)

**ap calculus**

By Theorem ∫ e^x dx = e^x + C

**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...

**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

**algebra**

24 is the total number of plants. x = number of blooming annuals y = number of non-blooming annuals x + y = 24

**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....

**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

**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

**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.

**Calculus**

Were you given (a,b) values? From x = ? to ?

**Math**

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

**math**

Do you have a choice of dimensions?