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

Algebra ->  Expressions -> Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!      Log On


   



Tutors Answer Your Questions about expressions (FREE)


Question 897980: y/z,if y=4/5 and z=2/3

Click here to see answer by Fombitz(32388) About Me 

Question 898206: Hi.
My question is If C=2πr, then r = ?
A. C-2π
B. C/2π
C. C/2π
D.2π/C
E. 2π-C
thank you if you can help, and "π" is the pie symbol, just incase you didn't see it clear Thanks.

Click here to see answer by ewatrrr(24785) About Me 

Question 898204: please Evaluate:
(x^2-3xy^3+2z²)/(x(y^2-z)) when x=-1 y=-2 z=1

Click here to see answer by ewatrrr(24785) About Me 

Question 898228: Hi,
evaluate
9 - 3 - (-2)^3

Click here to see answer by ewatrrr(24785) About Me 

Question 898231: Hello,
Identify the domain and range of
f(x)= 2cosx


Click here to see answer by Fombitz(32388) About Me 

Question 898232: Hello,
Which of the following is the equation of an asymptote 0f
g(x)=tanx

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

Question 898253: how do you solve the following equations,
3/4x-1/3x+5=5/6x


-1/4(x-12)+1/2(x+2)=x+4

1/2(x+2)+3/4(x+4)=x+5

Click here to see answer by Fombitz(32388) About Me 

Question 898193: A shop sells sweets in bags of 7 and 20. What is the largest number of sweets that cannot be purchased exactly?
Click here to see answer by richard1234(7193) About Me 

Question 898225: can anyone please help?
Evaluate:
A = 5/100[50.28 -( 17(5)²)/9.81]

Click here to see answer by rfer(16322) About Me 

Question 898230: Hi,
evaluate

cos(tan ^-1)(-1))

evaluate
sec^-1(2)

Click here to see answer by lwsshak3(11628) About Me 

Question 898858: [8(2)-16]+7(4)
Click here to see answer by rfer(16322) About Me 

Question 898988: transpose the following making x the subject:
y= 7+x/14
thanks in advance

Click here to see answer by Fombitz(32388) About Me 

Question 899057: what is the value of a,b,c
2a-5b+c=1
a+c=2
b-3c=-3

Click here to see answer by ewatrrr(24785) About Me 

Question 899768: (7/15)x(5/28)+(7/10)x(5/14)
Click here to see answer by Fombitz(32388) About Me 

Question 899862: (3x^3-5x^2-3x+3) divided by (x-3)
Click here to see answer by ewatrrr(24785) About Me 

Question 899953: Your friend claims that the equation 2x = 3x is always false. Is your friend correct? Explain your answer.

Click here to see answer by Fombitz(32388) About Me 

Question 899253: How do I rewrite this expression without the parenthesis step by step
P(1+r/2)^2

Click here to see answer by Fombitz(32388) About Me 

Question 900044: Im in algebra 1 and my teacher gave us the answer to the following question.
Question - 9+[4-(10-9)²]³. He said the answer is 36, but i dont know how he got that answer. Plus show me step by step, how to get this answer. Please and thank you. :)

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

Question 900081: How do you find equivalent expression without parentheses for x-(x+2)
Click here to see answer by stanbon(75887) About Me 

Question 900154: My son is studying math expressions with exponents. The question is which expression is equivalent to 45^-3/45^3/ The options are 45^-1, 45^0, 1/45^6, or 45^6. I came up with the answer of 45^0 because the negative and positive exponent would subtract itself to equal 0. Is this correct and how would I write out the problem solving to explain the answer.
Click here to see answer by josgarithmetic(39623) About Me 
Question 900154: My son is studying math expressions with exponents. The question is which expression is equivalent to 45^-3/45^3/ The options are 45^-1, 45^0, 1/45^6, or 45^6. I came up with the answer of 45^0 because the negative and positive exponent would subtract itself to equal 0. Is this correct and how would I write out the problem solving to explain the answer.
Click here to see answer by MathTherapy(10555) About Me 

Question 900730: Factor: +x%5E5%2Bx%2B1+
Click here to see answer by Alan3354(69443) About Me 

Question 900731: If x and y satisfy the simultaneous equations +16%5Ex-16%5Ey=+64512+ and +4%5Ex-4%5Ey=+224+, find the sum of x and y.
Click here to see answer by Edwin McCravy(20060) About Me 

Question 900856: Square root of (48x^3y^2)
Click here to see answer by Alan3354(69443) About Me 

Question 901028: Translate the verbal sentence to algebraic term
The sum of four and a number divided by 3.
A. 4 + y/3
B. (4 + y)/3
I am confused if the correct answer is "A" or "B". Please help.
Thanks

Click here to see answer by ewatrrr(24785) About Me 

Question 901097: IF X IS THE UNKNOWN NUMBER, WHAT IS 28 LESS THAN THE NUMBER?
Click here to see answer by JulietG(1812) About Me 

Question 901352: John is n years old.sue is 3 years younger than twice his age.write an expression for sue's age in terms of n.
Click here to see answer by stanbon(75887) About Me 

Question 901528: When evaluating all expressions, do we use the oder of operations to evaluate? Are there times that we dont follow these rules?
Click here to see answer by stanbon(75887) About Me 

Question 901534: Okay, I have this problem I got wrong on my test but I thought I got it right.

Evaluate the expression below if x=-1 and y=3
3x^2-y^2
I got -12, but my teacher check it as wrong so I went to the online calculator it also said -12. I am confused please help.
cmur9133

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

Question 901714: Evaluate g(3) if g(x) = 2x + 2.
Click here to see answer by harpazo(655) About Me 

Question 901737: 3 x 4 + 15 / 5
Add grouping symbols to get (a) 21 and (b) 15. Show your work.

Click here to see answer by ewatrrr(24785) About Me 

Question 901849: How do I rewrite with parentheses 5+3*2-6 to get the value of 10
Click here to see answer by Simnepi(216) About Me 

Question 902243: hi,
Which of the following is equivalent to 125%
a) 12.5
b) 1.25
c) 0.125
d) 0.0125

Click here to see answer by ewatrrr(24785) About Me 
Question 902243: hi,
Which of the following is equivalent to 125%
a) 12.5
b) 1.25
c) 0.125
d) 0.0125

Click here to see answer by richwmiller(17219) About Me 

Question 902245: Hi,
given cos(A+B)= cos A cos B - sin A sin B, Find cos(2x)

Click here to see answer by ewatrrr(24785) About Me 

Question 902247: Hello,
A while back, I submitted a problem and got wrong answer.I put problem wrong, my fault, so here is what I need to know:
evaluate
sec^-1(2)

Click here to see answer by Fombitz(32388) About Me 

Question 903108: Find a number such that one-half of the number is 3 less that two-thirds of the number.
Click here to see answer by ewatrrr(24785) About Me 

Question 903329: What does it mean when the numbers don't have any thing between them like this 5(-3/4)
Click here to see answer by Alan3354(69443) About Me 

Question 903328: 5x-7(2-4x) I don't understand how to do this problem.
Click here to see answer by jim_thompson5910(35256) About Me 

Question 903825: Evaluate the following algebraic expressions for given value of the variables.
3-5x; x=-4

(3x-2)(y-1);x=2/3,y=1

Click here to see answer by jim_thompson5910(35256) About Me 

Question 903967: SOLUTION: Find by calculating gradient whether or not the opposite sides of quadrilateral ABCD are parallel. A is (2,1), B is (14,9);C is (24,23), D is (10,13
Click here to see answer by Edwin McCravy(20060) About Me 

Question 904192: 10+2(9-5)-16+8= evaluate the following expression step by step
Click here to see answer by Alan3354(69443) About Me 

Question 904252: Evaluate the expression for x=3 and z=4 4xz-3x= I got 127 I did 4(34)=136 minus 3(3)=9 so I did 136-9 =127 and I got it wrong ...where did I go wrong and what's the correct awnser
Click here to see answer by Alan3354(69443) About Me 

Question 904431: Let x = 6 and y = 6. Write the phrase as an algebraic expression. Assume that no denominators are 0.
8 less than the sum of x and y

Click here to see answer by ewatrrr(24785) About Me 

Question 905079: Multiply.(-9x4)(8x3) can you help me figure this out?
Click here to see answer by ewatrrr(24785) 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