Posts by helper
Total # Posts: 1,943

ALGEBRA
see your first post below, I solved it for you and explained 
maths
P = a + b + c add the three sides P = 8x  7w + 3x + 9y + 3y + 5w combine like terms 
math
by the cofunction property cos B = sin A so, if angle B = 33 angle A = ? 
precalc
Sine is an odd function, sin(Î¸)= sin Î¸ 
precalculus
2 rads to converts radian to degrees, multiply by 180/pi 2 * 180/pi = (2 * 180)/3.14 = ? 
algebra
3x + 9y = 18 y = mx + b solve for y, 9y = 3x + 18 y = 3x/9 + 18/9 simplify the equation 
Math
A = pi r^2 pi = 3.14 r = 5 A = (3.14)*(5^2) A = (3.14)*(25) A = ? m^2 do the multiplication for your answer I don't know what this sentence means. Is this the same as the surface area and it would be 10m? 
ALGEBRA
I followed that 3 + x(12*4) = 24 multiply 12*4 3 + 48x = 24 subtract 3 from both sides 3  3 + 48x = 24  3 48x = 21 divide both sides by 48 48x/48 = 21/48 x = 21/48 reduce fraction x = 7/16 
ALGEBRA
what is 'pemdas'? 
ALGEBRA
3 + x(12*4)  24 if that is the problem then, 3 + 48x  24 48x  21 48x = 21 x = 21/48 x = 7/16 you can only combine 'like terms' x terms can only be added to other x terms, constant terms can only be added to other constant terms. do you understand? 
ALGEBRA
I need to see the original problem first to help you. why did you add 48x + 3 to equal 51x? then the 'x' is gone in the next line? 
Statistics
see 1st link below under 'Related Questions' for this exact problem 
Taxes
No. Each partner includes his or her share of the partnership's income or loss on his or her personal tax return. 
5th grade
17,13,27,33,25 put the numbers in order, from smallest to largest 13, 17, 25, 27, 33 the median is the number in the middle so, the median would be 25 for the mean, add all the numbers and then divide the sum by the number of numbers that you added. 13 + 17 + 25 + 27 + 33 = ? ... 
Algebra  Help
Train A has a lead of 12 min. RT = D T = time train B T + .20 = time train A 90T = distance train B 80(T + .20) = distance train A 80(T + .20) = 90T 80T + 16 = 90T 16 = 10T T = 1.6 hours train B overtake train A = 1.6 hours 
geomitry
x = 1st angle 90  x = 2nd angle 5x  16 = 3rd angle x + 90  x + 5x  16 = 180 solve for x 
math
what is the figure? square, cube, sphere, etc? 
algebra
6m + 3/11 = 77/11 to solve subtract 3/11 from both sides then divide both sides by 6 
Prealgebra
A = 1/2 bh multiply both sides by 2 2A = bh to find h, divide both sides by b can you finish this? 
math
sketch a right triangle A = 55 degrees c = 50 a = unknown (kite height) sin 55 deg = a/c = a/50 = 0.8192 solve for a 
help math ahhhh
9. 5x + 4y = 1 3x ? 4y = 7 what does ? mean ? 
mathematics
simplify 2/(x^(3/2))= 2x^(3/2) 
AiMS MATH
Natural numbers are the counting numbers, 1, 2, 3, etc Integers are the counting numbers, together with their opposites and zero. whole numbers are the counting numbers without the zero. Rational numbers are the set of all numbers that can be written as quotients, ie, 1/2. ... 
math
yes, correct good job! :) 
math
5 * (thirdrt 48)  (thirdrt 750) breakdown the radicals 5 * (3rt 8)(3rt 6)  (3rt 125)(3rt 6) can you do this now? 
math i need help please
B. what are you having trouble with? did you find r (common ratio)? post what you found for r and the first term so I can understand what part of this you don't understand. 
MATH I NEED HELP PLEASE!
Reposting a problem in all caps is rude. it's like you are shouting. 
Analytical Geometry
(sin^2 x)/(sec^2 x  1) (sin^2 x)/(tan^2 x) (sin^2 x)/(sin^2 x/cos^2 x) (sin^2 x) * (cos^2 x/sin^2 x) cos^2 x therefore, (sin^2 x)/(sec^2 x  1) = cos^2 x 
geometry
is this a triangle? is this a right triangle? need more specific info to solve 
MATH HELP ME NOW PLEASE!!
see your above latest post 
algebra
w = width 4w + 6 = length P = 2w + 2L 42 = 2w + 2(4w + 6) Solve for w 
algebra
y = 2x + 5 y = 3x substitute, y = 3x in y = 2x + 5 y = 2x + 5 3x = 2x + 5 solve for x, use x value to find y What do the "?" mean? I see them in most of your posted problems. In this case, the "?" in this problem are part of the answer, so it didn't ... 
arithmetic
Add 17 + 5 = 22 therefore, 17/18 + 5/18 = 22/18 
math
G = Glen's present age B = Ben's present age B = 4/7 G G + 15 + B + 15 = 63 substitute, B = 4/7 G G + 15 + 4/7 G + 15 = 63 Solve for G 
Trig
cos^2 x = 1 take square root of both sides + cos x = 1 cos x = 1 cos x = 1 for what angle value is cos = 1 and cos = 1 ? 
physics
should have added above, 1 mi = 5280 feet 1 mi = 1609.344 meters 1 mi/min = 60 mi/hr 1 mi/min = 88 ft/sec 1 mi/min = 26.8224 meters/sec sorry for the confusion. I wish there was a 'do over' button. :) 
physics
1.00 mi in 4.00 min 1 mile/min = 60 mph 1 mile/4 min = 0.25 mi/min 1. 0.25 x 60 mi/hr = ? mph 2. 0.25 x 88 ft/sec = ? ft/sec 3. 0.25 x 26.8224 meters/sec = ? meters/sec 
Math
circles that form E? how can a circle form an E? I don't understand 
alg2
3x âˆ’ 7 (sqrt x) + 2 = 0 7(sqrt x) = 3x  2 divide both sides by 7 (sqrt x) = 1/7(3x + 2) square both sides x = 1/49 (3x + 2)^2 expand the right side you will have a quadratic equation that can be solved either by completing the square or using the ... 
alg 2
x^3/4 * x^3/4 * x^3/4 = x^9/64 
5th grade math
w = 78 L = 68 p = 2w + 2L p = 2(78) + 2(68) can you do this now? 
algebra 2
v^2 + 8v + 6 = 0 this cannot be factored either complete the square or use the quadratic formula to solve 
algebra 2
quadratic formula x = (b + (sqrt(b^2  4ac))/2a 5x^2 + 3 = 7x 5x^2 + 7x + 3 = 0 a = 5, b = 7, c = 3 plug these into the formula and solve 
alg. 2
2.25 + .15x = 1.50 + .18x solve for x 
math
incomplete problem 
Junior Math
(t^21)/(t^2+7t+10)  (2t+4)/(t^2t6) factor the denominators first (t^21)/(t+2)t+5)  (2t+4)/(t3)(t+2) LCD is (t+2)(t+5)(t3) Now, can you combine over the LCD? 
ALGEBRA
x + 2y  4 = 0 x + 2y = 4 to find xintercept, y = 0 x + 2(0) = 4 x = 4 xintercept = (4.0) slope intercept form (which you got right above) y = mx + b for Line A is y = 1/2 x + 2 slope m = 1/2 If two lines are perpendicular, the slope of one is the negative reciprocal of ... 
math
5/4 x + 1/8 = 5/8 + x 5/4 x = 4/8 + x multiply both sides by 8, (LCD of 4 and 8) then solve for x 
math
you need to use parentheses 5/4x1 divided by 8x = 5/8 + x ? what is "4x1"? 
Algebra 1
you're very welcome :) 
Algebra 1
f(x) = x^2 + 3 f(5) = 5^2 + 3 f(5) = ? 5^2 = 5 x 5 = 25 f(5) = 5^2 + 3 f(5) = 25 + 3 f(5) = 28 
Algebra 1
No, f(5) does not = 10 f(x) = x^2 + 3 f(5) = 5^2 + 3 f(5) = ? 5^2 = ? 5^2 + 3 = ? show me how you got 10 
Algebra 1
f(x) = x^2 + 3 f(2) = 2^2 + 3 f(2) = ? 2^2 = 4 f(2) = 2^2 + 3 f(2) = 4 + 3 f(2) = 7 the answer for f(2) is 7 when x = 2, the function value = 7 now, you do the other one 
Algebra 1
just plug in the values for x and solve f(x) = x^2 + 3 f(2) = 2^2 + 3 f(2) = ? f(x) = x^2 + 3 f(5) = 5^2 + 3 f(5) = ? 
math 5th grade
5/5 * 2/3 = ? 100, 10, 1, 1/10 
Math
I = PRT 525 = 3500 *.06 * T Solve for T (time) this is simple interest 
rectangular area
you're welcome 
rectangular area
A = Lw 240 = 24w w = ? 
To helper
I do when they post more than one of the same type problem, but I understand and will only set up for now on 
Cylinder Height
r = radius 3r = height (h) SA = 2(pi)(r)(h) + 2(pi)(r^2) SA = 2(pi)(r)(3r) + 2(pi)(r^2) SA = 6(pi)(r^2) + 2(pi)(r^2) SA = 8(pi)r^2 402 = 8(pi)r^2 402 = 8(3.14)r^2 402 = 25.12r^2 16.00318 = r^2 rounding 16.00318 = 16 16 = r^2 r = 4 height = 3r = 3(4) = 12 
algebra
x + 5 > 9 remove absolute value sign x + 5 > 9 x > 4 x  5 > 9 x > 14 when you divide by a negative, reverse the sense of the inequality x < 14 x > 4 x < 14 
math
(3xy  10)  (xy + 5) 3xy  10  xy  5 2xy  15 
TO Helper
I figured those were yours. I'm going through those now (and others). I try to help everyone I can. I don't exactly understand the donut problem either because the equation doesn't seem to work if all donuts were sold. I'm hoping REINY or another math tutor ... 
TO Helper
the screen name "Anonymous" belongs to anyone who left the name field blank, so I have no idea which posts are yours. I scan all problems and help where I can. I am not a tutor so I only help on problems I am sure of. 
MATH ALGEBRA
2x 3y + 30 = 0 ? to find x and y intercepts, put equation in the form ax + by = c x intercept = (c/a, 0) y intercept = (0, c/b) to find xintercept, y = 0 2x  3(0) = 30 2x = 30 x = 15 x intercept = (c/a, 0) x intercept = (15, 0) to find yintercept, x = 0 2(0)  3y = 30... 
4th Grade
2/9 * 36 = 72/9 = 8 
Algebra 1
0.2x < 10 divide both sides by 0.2 when dividing by a neg, reverse the sense of the inequality x > 50 
algerbra
yes, you are correct 
alg. 2
x^2  16x + 4 = 0 x^2  16x = 4 (16^2)/4 = 256/4 = 64 x^2  16x + 64 = 4 + 64 x^2  16x + 64 = 60 (x  8)^2 = 60 
MATH_ALGEBRA
you're welcome :) 
MATH_ALGEBRA
(1) F + 1000P = 32 (2) F + 3500P = 44.50 you have to solve these 2 equations simultaneously By elimination method, to eliminate F, multiply one of the equations by 1 1(F + 1000P = 32)= F  1000P = 32 Now ADD these two equations together F  1000P = 32 F + 3500P = 44.50 0... 
MATHALGEBRA
y = 2/5x  3 P (0,5) parallel lines have equal slopes slope intercept form of an equation y = mx + b m = slope, b = yintercept parallel to y = 2/5x  3, and through P(0, 5) m = 2/5 y intercept = 5 so, the equation would be D. y = 2/5x + 5 
math
A = B + 5 B = C + 7 C = THE DIFFERENCE BETWEEN 13 AND 9 D = A  B C = 13  9 = 4 B = C + 7 = 4 + 7 = 11 A = B + 5 = 11 + 5 = 16 D = A  B = 16  11 = 5 A = 16 B = 11 C = 4 D = 5 
algebra
quadratic formula x = (b + (sqrt(b^2  4ac)))/2a 1) x^2 = 9 x^2  9 a = 1, b = 0, c = 9 x = 0 + (sqrt(0^2  4(1)(9)))/2(1) x = +  (sqrt(0 + 36))/2 x = + (sqrt36)/2 x = + 6/2 x = + 3 x = 3, 3 you try number 2 
math
Supplementary angles: two angles whose measures total 180 deg x = 1st angle 3x  4 = 2nd angle x + 3x  4 = 180 solve for x to find the angles 
algebra
for michele (3x2)/(5)2<(2x3)/(2) multiple both sides by LCD of 10 2(3x  2)  20 < 5(2x  3) 6x  4  20 < 10x  15 6x  24 < 10x  15 9 < 4x 9/4 < x x > 9/4 
Math
if this your problem  1  4x/3  < 3 remove absolute value sign 1  4x/3 < 3 and 1 + 4x/3 < 3 1  4x/3 < 3 4x/3 < 2 4x < 6 x > 6/4 x > 3/2 1 + 4x/3 < 3 4x/3 < 4 4x < 12 x < 3 so solution is 3/2 < x < 3 
math
from above .03 = value of mixture this should be x + 100 = mixture total number of oz 
math
x = number oz of cheaper tea .02x = value of cheaper tea 100 = number oz of better tea .05 * 100 = 5.00 = value of better tea .03 = value of mixture .03(x + 100) = value of mixture .02x + 5.00 = .03(x + 100) .02x + 5.00 = 3.00 + .03x 2.00 = .01x x = 200 200 oz of .02 tea 
Intermediate Algebra
V = 2(pi * L^2) or V = 2pi * 2L^2 
algebra
(4/(x + 2)  4/x)/2 = 1 rewrite as (4/(x + 2)  4/x) * 1/2 = 1 4/(2(x + 2))  4/2x = 1 4/(2x + 4)  4/2x = 1 LCD 2x(2x + 4) (8x  4(2x + 4))/(2x(2x + 4)) = 1 multiply both sides by 2x(2x + 4) 8x  4(2x + 4) = 2x(2x + 4) 8x  8x 16 = 4x^2 + 8x 16 = 4x^2 + 8x 4x^2 + 8x + 16 = ... 
math!!!
g(x) = 2x^2 + x  1 The degree of an equation that has not more than one variable in each term is the exponent of the highest power to which that variable is raised in the equation. b. 2 is the answer 
math!!!
h = 6(t  2.5)^2 + 38.5 plug in a few values for t when t = 1, h = 25 when t = 2, h = 37 when t = 2.5, h = 38 when t = 3, h = 37 you try, what do you think the answer is 
Algebra
x = each base vertex angle = 1/2x + 10 solve x + x + 1/2x + 10 = 180 
Algebra II
3/x^3 divided by 1/x^2 is this your problem? instead of dividing, invert and multiply 3/x^3 * x^2/1 = 3x^2/x^3 = 3x^1 = 3/x 
algebra
8/26 = m/13 cross multiply means denominator of 1st * numerator of 2nd numerator of 1st * denominator of 2nd 26M = 104 M = 4 
algebra
11T/28T / 4 = 1 rewrite problem 11T/28  T * 1/4 = 1 11T/(4(28  t)) = 1 11T/(112  4T) = 1 11T = 112  4T 15T = 112 T = 7.47 
advance algebra
X=smaller number y= bigger number y  x = 192 9x = bigger number 9x  x = 192 8x = 192 x = 24 smaller number bigger number = 9x = 9(24) = 216 
calculus
A = Lw 25 = Lw w = 25/L P = 2w + 2L P = 2(25/L) + 2L P = 50/L + 2L 
Algebra 1
5x + y = 5x + (3x âˆ’ 11) = 13. where are you getting these problems? there is no way to solve the way you have written this. copy the problem exactly from your book 
Algebra 1
no way to solve this 
math
cannot solve either as separate equations 
math
see your other post 
ALGEBRA
4 + x(10  8) 4 + 10x  8x 4 + 2x 2x = 4 x = 2 
Algebra 1
5y + 4x = 41 what are you solving for? copy the complete problem from your book there isn't anything to solve for above, unless 5y + 4x = 41 5y = 41  4x y = (41  4x)/5 4x = 41  5y x = (41  5y)/4 is this what you want there is nothing else to solve for 
algebra
don't understand what you need done repost 
MATH
881/5 = 176 1/5 
Algebra 1
5y + 4x = 41 what are you solving for? 
Algebra 1
incomplete problem try again :) 
Geometry
a + b + c = 1400 a + b + 600 = 1400 a + b = 800 using Pythagorean theorem a^2 + b^2 = 600^2 a + b = 800 a^2 + b^2 = 600^2 solve simultaneously I got a = 258.579 b = 541.421 or a = 541.421 b = 258.579