Saturday

July 30, 2016
Total # Posts: 1,781

**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*

**math**

Please don't repost a question without checking to see if your original post was answered. See your 1st post at 4:51 pm. This was answered for you.
*January 30, 2011*

**finance**

P = M/(1 + r)^n P = price M = maturity value r = investor's required annual yield/2 n = number of years to maturity x 2 225 = 1000/(1 + r/2)^22 225(1 + r/2)^22 = 1000 (1 + r/2)^22 = 4.4444 take the 22nd root of each side 1 + r/2 = 1.07015 r/2 = 0.07015 r = .1403 r = 14% ...
*January 30, 2011*

**algebra**

For each equation, pick values for x and solve for y. Pick at least three pair of x,y values and then plot these points. Draw a line connecting these points. Do this for each equation. The point where these line graphs intersect is the solution.
*January 30, 2011*

**accounting**

Are you sure it's only one journal entry? For the $50 mil transaction, $50 DB to Asset Account, $10 mil paid in cash (CR Cash) and the remaining $40 mil is a loan payable (CR Loan Pay). Since $8 mil principal and interest is due each Dec 31, this must be a 5-yr loan (40 ...
*January 30, 2011*

**Algebra II**

Correct!
*January 30, 2011*

**Algebra II**

I = PRT Divide both sides by PT I/PT = R
*January 30, 2011*

**algebra**

And, your question is? y + x = -4 ?
*January 30, 2011*

**Algebra**

Do this the same way as shown in your 1st post.
*January 30, 2011*

**Algebra**

Find ordered pairs to graph these equations. x + y = 6 x = 0, y = 6 x = 2, y = 4 x = 4, y = 2 x = 6, y = 0 x - y = 4 Do the same for this equation. Plot the points, for each equation and draw a line for each set of points. The point of intersection is the solution.
*January 30, 2011*

**accounting**

You're welcome.
*January 30, 2011*

**accounting**

If for the following year, the entry should have been to prepaid insurance, an asset account, not to insurance expense. This is because the expense is not for the current year. The expense belongs in the next fiscal year. Current year entry, should have been DB Prepaid ...
*January 30, 2011*

**Accounting-Journal Entry**

I don't see a question.
*January 30, 2011*

**math**

Do you mean the wall is 12 feet by 16 feet? If so, set up a ratio. 12 : 16 = 4 : x 12/16 = 4/x Cross multiply 12x = 64 x = ?
*January 30, 2011*

**algebra**

Do you mean, 5^2 n + 1 = 1/25 ? 25n + 1 = 1/25 multiply both sides by 25 625n + 25 = 1 625n = -24 n = ?
*January 30, 2011*

**6th grade math**

'tghias' is NOT correct.
*January 30, 2011*

**Math PLEASEE**

Do you mean, x^2 - 4 ? x^2 - 4 = (x - 2)(x + 2)
*January 30, 2011*

**Math- Geometry**

Ratio 5 : 2 5x + 2x = 20 Solve for x.
*January 30, 2011*

**College algebra**

Re-type your problem. What is 7 4 1 4 ?
*January 30, 2011*

**math**

What rectangle? Re-read your problem. If you knew absolutely nothing about this problem, could you solve it with the information given?
*January 30, 2011*

**Calculus **

I guess it depends on your teacher, because (2)^3/2 means (sqrt(2))^3 I've never seen anyone interpret this as (sqrt(2^3)). The first way will always get you the correct, simplified answer. If I were you, I would get in the habit of doing this the first way. Radicals ...
*January 30, 2011*

**Calculus **

2/3(8)-ln3-2/3(sqrt*8) My answer, 16/3 - ln 3 - 4/3(sqrt(2)) You have 16/3, 2/3 (8) = 16/3 Where you went wrong, You have, 2/3 (sqrt(8)) It should be, 2/3 (0 + 2)^3/2 2/3 (2)^3/2 2/3 (sqrt(2))^3 2/3 (2(sqrt(2))) 4/3 (sqrt(2))
*January 30, 2011*

**trigonometry**

Please do not repost questions without checking to see if your original post was answered. Check your earlier post (2:44 am). This question was answered for you.
*January 30, 2011*

**math**

Check your problem. Not enough info is given here to solve this problem.
*January 30, 2011*

**Math**

If he spends the same time doing 3 different activities, 80 hrs/3 = ?
*January 30, 2011*

**math**

n = number of dimes 21 - n = number of quarters .10n = value of dimes .25(21 - n) = value of quarters .10n + .25(21 - n) = 4.20 Solve for n, number of dimes 21 - n = number of quarters
*January 30, 2011*

**7th Math**

Correct!! Good job!
*January 30, 2011*

**7th Math**

70 words in 2 min = 70/2 = 35 wpm 120 words in 3 min = 120/3 = 40 wpm wpm = words per min Can you answer now?
*January 30, 2011*

**calculus**

Verify this equation, y = 4^x-1 You need parentheses. Is it, y = 4^(x - 1)? Or, y = 4^(x) - 1? Or ?
*January 30, 2011*

**Geometry/Trig.**

angle A = 45 deg Special 45-45-90 deg triangles have sides in the ratio of 1:1:(sqrt(2)) OR ratio n : n : n(sqrt(2)) This means, in this problem, side a = 1 (opposite side) side b = 1 (adjacent side) side c = 1*(sqrt(2)) (hypotenuse) tan A = a/b = op/adj tan 45 = ?
*January 30, 2011*

**Calculus**

Verify this equation, y = 4^x-1 You need parentheses. Is it, y = 4^(x - 1)? Or, y = 4^(x) - 1? Or ? Are you Jamal? Please don't change screen names. And, which is it? In this problem, rotation is about the x-axis. In the 'Jamal' problem, rotation is about the y-axis.
*January 30, 2011*

**calculus**

Check your problem. Does the problem state between x = a and x = b?
*January 30, 2011*

**Intermediate Accounting**

For compounded annually R = rate, n = number of years FV = orig investment * ((1 + R)^n) 1,000,000 = 182,696 * (1 + R)^15 5 = (1 + R)^15 (15th root(5)) = 1 + R 1.11 = 1 + R .11 = R please check my math
*January 30, 2011*

**math **

D = RT Distance = Rate x Time T = D/R R = D/T
*January 30, 2011*

**trig**

x = 225 degrees
*January 30, 2011*

**trig**

Do you mean -(sqrt(2))/2 ?
*January 30, 2011*

**Geography 7**

The usual term for the place where two (or more) rivers meet is "confluence". From wiki answers dot com
*January 30, 2011*

**Math(Please check)**

derivative of f(x)=7x-19 at x=2 f'(x) = 7 f'(2) = 7
*January 30, 2011*

**science**

"The moon is much smaller than the earth. As a result, the force of gravity on the moon is only about one sixth as strong as gravity on earth. Gravity is what holds us down on the earth's (or moon's) surface. If you were to weigh yourself on a scale here on earth ...
*January 29, 2011*

**Chemistry**

If you would like a timely answer to your post, please post your school subject in the "School Subject" box.
*January 29, 2011*

**Physics**

See the first link below under Related Questions. A somewhat similar problem was answered. The link might be helpful if no one else answers.
*January 29, 2011*

**geometry**

s = side of square P = 4s 30 <= 4s <= 64 30/4 <= s <= 16 15/2 <= s < 16
*January 29, 2011*

**mat/116**

Try to solve these inequalities first. Compound inequalities with 'Or', are solved separately and the solutions have 'or' between them. Example. If the solution to the first was x < 2 and the solution for the second was x > 4, then the solution would be, ...
*January 29, 2011*

**Math**

Thanks so much MathMate!!
*January 29, 2011*

**Math**

If possible, could a math tutor check the math post question that "daylo3" asked at 6:42 pm today, that I answered? I don't usually answer posts that I am not 100% sure of the answer. I would like to know if the way I approached this problem is correct? Thanks in...
*January 29, 2011*

**Algebra**

194 * 10^3 = 194,000 Scientific notation 1.94 x 10^5
*January 29, 2011*

**Math**

Since, the problem states to use R and C for the equation, change the x to C. So, the equation would be, R = 1.4C - 7 Instead of, R = 1.4x - 7
*January 29, 2011*

**Math**

A.) Cost 85, Retail 112 Cost 175, Retail 238 For the equation (x,R), x = cost (85,112), (175,238) Since linear, use y = mx + b R = mx + b slope m = 238 - 112/(175 - 85) slope m = 126/90 = 1.4 R = 1.4x + b To find b, plug in (85,112) 112 = 1.4(85) + b 112 = 119 + b b = -7 R = 1...
*January 29, 2011*

**trig**

Leave in radical form means don't simplify the sqrt (radical) to exact value. Example, exact value of (sqrt(2))= 1.4142 All your answers are correct. Always simplify radicals, ie,(like you did), but wasn't sure, (sqrt(52)) = 2(sqrt(13)) don't leave as (sqrt(52)) (...
*January 29, 2011*

**MATH: Pre-Cal/Trig**

A = wL x = width of garden x + 6 = length of garden Area of garden = x(x + 6) x + 6 = width of garden and walkway x + 6 + 6 = x + 12 = length of garden and walkway Area of garden and walkway = (x + 6)(x + 12) Area of garden and walkway - 288 = area of garden (x + 6)(x + 12) - ...
*January 29, 2011*

**algebra**

Commutative Property (think commute or move around)is the one that refers to moving stuff around. For addition, the rule is a + b = b + a From purplemath dot com
*January 29, 2011*

**Math**

Assuming you mean 4 - 7^(2x) = 1 7^(2x) = 3 Take logarithm to base 7 of both sides 2x log 7 = log 3 x = log 3/(2 log 7) x = 0.4771/(2 * 0.8451) x = 0.4771/1.6902 x = 0.2823
*January 29, 2011*

**Personal Finance**

b. Future value of an asset with interest compounded annually, (you didn't mention how to compound) n = number of years R = rate FV = Original investment * ((1 + R)^n) Cal. Future value of salary, 6%/year 1st year--23,000 2nd year---23,000 + 1,380 = 24,380 3rd year---24,...
*January 29, 2011*