Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Question 1124700: 5a+3(4-a)
Click here to see answer by josgarithmetic(39623) About Me 

Question 1124802: Solve for U:
s= h/2 (u+v)

Click here to see answer by solver91311(24713) About Me 
Question 1124802: Solve for U:
s= h/2 (u+v)

Click here to see answer by josgarithmetic(39623) About Me 

Question 1124801: 1/t=1/u+1/y

Click here to see answer by solver91311(24713) About Me 

Question 1124842: -2(8x+8)=-16

Click here to see answer by josgarithmetic(39623) About Me 

Question 1125015: Circle the GCF of 18×3 y and 12xy2
18x3y: 2.3.3.x.x.x.y


12xy2:2.2.3.×.y.y

Click here to see answer by Boreal(15235) About Me 
Question 1125015: Circle the GCF of 18×3 y and 12xy2
18x3y: 2.3.3.x.x.x.y


12xy2:2.2.3.×.y.y

Click here to see answer by MathLover1(20850) About Me 

Question 1125012: A large office desk has an area of 36feet and 2 inches.If the wideth is 4.5 feet write a equation to respresent the area.
Click here to see answer by ikleyn(52832) About Me 

Question 1125499: 6(5g+2)=30g
Click here to see answer by MathLover1(20850) About Me 

Question 1125573: The length of a rectangle is 4 centimeters less than 3 times the width. The a perimeter is 64 cm. Find the length and width.

Click here to see answer by josgarithmetic(39623) About Me 

Question 1125639: What whole number will make the sentence 21-x>17 ?
Click here to see answer by josgarithmetic(39623) About Me 

Question 1125742: If x + 1/x = 4, find the value of x^2 + 1/x^2
Click here to see answer by greenestamps(13203) About Me 
Question 1125742: If x + 1/x = 4, find the value of x^2 + 1/x^2
Click here to see answer by ikleyn(52832) About Me 

Question 1125807: 0.6x - 2.4 = 1.2
Click here to see answer by MathLover1(20850) About Me 

Question 1126164: x-4/3y=17/15
2x+3/2y=11/10
Solve by substitution or elimination

Click here to see answer by Alan3354(69443) About Me 
Question 1126164: x-4/3y=17/15
2x+3/2y=11/10
Solve by substitution or elimination

Click here to see answer by josgarithmetic(39623) About Me 

Question 1126319: TechWiz Electronics makes a profit of
$35
for each MP3 player sold and
$18
for each DVD player sold. Last week, TechWiz sold a combined total of
117
MP3 and DVD players.
Let
x
be the number of MP3 players TechWiz sold last week. Write an expression for the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week.

Click here to see answer by ikleyn(52832) About Me 
Question 1126319: TechWiz Electronics makes a profit of
$35
for each MP3 player sold and
$18
for each DVD player sold. Last week, TechWiz sold a combined total of
117
MP3 and DVD players.
Let
x
be the number of MP3 players TechWiz sold last week. Write an expression for the combined total profit (in dollars) TechWiz made from MP3 and DVD players last week.

Click here to see answer by josgarithmetic(39623) About Me 

Question 1127405: Obtain the simplest value of [1-{1-(1-x³)^(-1)}^(-1)]^(-⅓) if x = 4.
Click here to see answer by MathLover1(20850) About Me 
Question 1127405: Obtain the simplest value of [1-{1-(1-x³)^(-1)}^(-1)]^(-⅓) if x = 4.
Click here to see answer by MathTherapy(10555) About Me 

Question 1127640: Given the set {1,2,3,6,11,20,37,68,}, which integers between 60 and 100 cannot be written as a number from the set on it's own, or as the sum of two, three or four numbers from this given set?
Click here to see answer by greenestamps(13203) About Me 

Question 1127774: Find the vertical and horizontal intercepts for -x^2 - 3x + 9.
(-x^2 means negative x squared)*

Find f(x) = ab^x if f(7) = 1 and if f(-1) = 2.
(ab^x means ab to the power of x)*

Click here to see answer by stanbon(75887) About Me 

Question 1128050: factor the following expression:
(A+1)(A-2)-(A+1)(A-4)

Click here to see answer by josgarithmetic(39623) About Me 

Question 77314: 6/z^2-4/z
Click here to see answer by Shin123(626) About Me 

Question 1128800: Can someone please help my brother solve the following equation.

Evaluate the function. (Round your answer to four decimal places.)
f(x) = − 3/8(3)^−x + 9/8, for f(2)
f(2) =

Click here to see answer by MathLover1(20850) About Me 

Question 1129727: What is the coefficient in this expression ?
80 - 5x
Is it -5 or 5 ?
My textbook says the coefficient is -5 but I think its a typo. Please correct me if I am wrong.

Click here to see answer by Boreal(15235) About Me 

Question 1129728: What is the coefficient in this expression ? 40 - 3x
Is it -3 or 3 ?
The way I read this expression is 40 - (+3x) so the coefficient should be 3.
Isn't the negative sign the SUBTRACTION operation rather than a negative integer?
Please correct me if I am wrong.

Click here to see answer by MathLover1(20850) About Me 
Question 1129728: What is the coefficient in this expression ? 40 - 3x
Is it -3 or 3 ?
The way I read this expression is 40 - (+3x) so the coefficient should be 3.
Isn't the negative sign the SUBTRACTION operation rather than a negative integer?
Please correct me if I am wrong.

Click here to see answer by MathTherapy(10555) About Me 

Question 1129729: What would be the coefficient in the expression 72 - (-4x)?
I am confused if it will be -4 or 4 and why? Could you please explain how you derive the answer?

Click here to see answer by MathLover1(20850) About Me 
Question 1129729: What would be the coefficient in the expression 72 - (-4x)?
I am confused if it will be -4 or 4 and why? Could you please explain how you derive the answer?

Click here to see answer by stanbon(75887) About Me 

Question 1129869: How do I evaluate m/n for m=54andn=9
Click here to see answer by math_helper(2461) About Me 

Question 1129879: Evaluate m/n and for m=54 and n=9
Click here to see answer by MathLover1(20850) About Me 

Question 1130005: The temperature in Brownsville fell from 25°F to −23°F in 8 minutes.
a. Write a numerical expression you can evaluate to find the average change in temperature per minute.
b. Find the mean change in temperature per minute.
Could you please explain the reasoning behind your answer such that I can explain to my child. This is my child's math homework who is a 6th grader.

Click here to see answer by ikleyn(52832) About Me 

Question 1130051: The temperature in Brownsville fell from 25°F to −23°F in 8 minutes.
a. Write a numerical expression you can evaluate to find the average change in temperature per minute.
b. Find the mean change in temperature per minute.
Could you please explain the reasoning behind your answer such that I can explain to my child. This is my child's math homework who is a 6th grader.

Please note: I asked this question earlier and the tutor replied about how she has never heard temperature drop so quickly in nature!!! I did not make this question. It is straight out of my child's math textbook. As illogical as it may sound, the question is targeted at math and not weather accuracy.Would appreciate the answer please!

Click here to see answer by ikleyn(52832) About Me 

Question 1130396: factorise x^3-3x^2-4x+12

Click here to see answer by Theo(13342) About Me 

Question 1130646: -2(x-6)=7x-48
Click here to see answer by MathLover1(20850) About Me 

Question 1130698: Solve the following equation for x, given that m is a positive number: √m*x+3=m*x-2
(only m is under the radical sign on the right hand side of the equation)

Click here to see answer by MathLover1(20850) About Me 
Question 1130698: Solve the following equation for x, given that m is a positive number: √m*x+3=m*x-2
(only m is under the radical sign on the right hand side of the equation)

Click here to see answer by MathTherapy(10555) About Me 

Question 1130750: Today, there were 2 members absent from the band. The present members folded 25 programs each, for a total of 525 programs. How many members are in the band when no one is absent? Write and solve an equation.
Click here to see answer by rothauserc(4718) About Me 

Question 1130751: Today, there were 2 members absent from the band. The present members folded 25 programs. How many members are in the band when no one is absent? Write and solve an equation.
Click here to see answer by greenestamps(13203) About Me 

Question 1131138: 525=25(x−2)
Click here to see answer by ikleyn(52832) About Me 

Question 1131644: The value of 28^983 x 98^984 ÷ 14^2948
Click here to see answer by MathLover1(20850) About Me 
Question 1131644: The value of 28^983 x 98^984 ÷ 14^2948
Click here to see answer by MathTherapy(10555) About Me 
Question 1131644: The value of 28^983 x 98^984 ÷ 14^2948
Click here to see answer by greenestamps(13203) About Me 

Question 1131702: Simplify [1-(1-(1-a²)^-1) ]^(-1/2)
Click here to see answer by josgarithmetic(39623) About Me 

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840