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

Tutors Answer Your Questions about expressions (FREE)

Question 50107: 3-(5+1)-(1-4)
Click here to see answer by stanbon(75887)

Question 50128: 15/t when t =5
Click here to see answer by tutorcecilia(2152)

Question 50128: 15/t when t =5
Click here to see answer by gloria3309(1)

Question 50166: (-15-20)+[8+(-3)-(-5)]

Click here to see answer by 4011(1)

Question 50374: Evaluate the expression.
-3m/t m=5/6 t=1/6
x/y x==2/5 y= 3/10

r/3s r=1/8 s=3/4 3x/5y x=1/5 y=-1/2
Click here to see answer by stanbon(75887)

Question 50376: Evaluate the expressions

2/5 divided by 3/10
-3m(5/6) divided by 1/6
-1/8 divided by 3(3/4)
3(1/5) divided by 5( -1/2 )
Click here to see answer by stanbon(75887)

Question 50377: -3m/t m= 5/6 t= 1/6

r/-3s r= -1/8 s= 3/4

3x/5y x=1/5 y= -1/2 Can you show me as much as possible how you got your answers? Thanks
Click here to see answer by stanbon(75887)

Question 50465: an orange has 62 calories. It has C fewer calories than a nectarine.
How many calories does a nectarine have?
Click here to see answer by stanbon(75887)

Question 50439: Evaluate the expression when n= 7 and when n= 0.4
Click here to see answer by tutorcecilia(2152)

Question 50510: Your friend evaluates (10-k) / 5 for k = 5, and gets 9 for an answer. Explain your friends error.
Click here to see answer by stanbon(75887)

Question 50515: Can this be simplified?
9/4 (x+ 6/5)-11
Click here to see answer by stanbon(75887)

Question 49495: evaluate
4(xx)-x+3 when x=-3

Click here to see answer by SnowXclouD(11)

Question 50587: I have worked this problem til I cant see straight. The ans in the book shows an answer of 15-3y. I show 18-2y so I think I am leaving out a step someplace.
The problem is 3[6-(y+1)]. would I not do the () first which is 2y so the problem would now be 3[6-2y] so this would be 3(6-2y) 18-4y? Can you please not really show me the ans per say but show me step by step where I went wrong. My family would sure appreciate it too since my high school daughter cant see where they got the ans either. Thank you so much for this service
Click here to see answer by stanbon(75887)

Question 50554: f(x) = (1 + x)/x
g(x) = 1/(1 - x)
h(x) = 1/(1 + x)
If so, (g o h)(x) =
a. x
b. 2 - x
c. -x
d. x/(2x + 1)
e. (1 - x)/(2 - x)
f. (1 + x)/x
g. (2 - x)/(1 - x)
h. (1 - x)/x
i. 2 + x
j. none of these
Click here to see answer by rapaljer(4671)

Question 50663: Add. 20 + (�15)
Click here to see answer by checkley71(8403)

Question 50788: I need to use parenthesis to get this problem to equal 14. can you help?
2 x 2 + 3squared - 4 + 3 x 5
thanks
Click here to see answer by checkley71(8403)

Question 50795: find the sum:
[6.7 -2.6] + [-3.3 2.9]
[3.5 -1.7] + [-0.2 1.1]

Click here to see answer by gsmani_iyer(201)

Question 50661: List the terms of the following expression.
2b to the 2nd power + 7b + 10

Click here to see answer by tutorcecilia(2152)

Question 50873: Combine like terms
9-3(2x-4)
Click here to see answer by Cintchr(481)

Question 50930: evaluate (0.03125)-2/5

Click here to see answer by stanbon(75887)

Question 50966: I am trying to help my son with an Algebra equation: 8+(36+ ___ )+1=15
The only numbers he has to choose from for this problem are 0,5,6,7
I don't understand how if this problem is all addition how the answer is 15.
Can you help us?
Click here to see answer by tutorcecilia(2152)

Question 51036: HI...MI NAME IN ANGI AND IM TAKING ALGEBRA AND IT IS A HARD CLASS FOR ME...SO PLEASE MAYBE I CAN LEARN IF YOU EXPLAIN ME HOW...THANKS
HERE IS THE PROBLEM
5(X+3)+X=4(X+6)-3
AGAIN THANK YOU...
Click here to see answer by stanbon(75887)

Question 51112: (x+5)+4
Click here to see answer by msmath(4)

Question 51135: (x+5)+4
Click here to see answer by checkley71(8403)

Question 51279: Can you help me with this equation
2
r - 5r + 6
___________
2
r - 4
Click here to see answer by Nate(3500)

Question 51389: how do you solve an expression with the exponent outside the parentheses
Click here to see answer by checkley71(8403)

Question 51406: Write an equation for the following using n as the variable. Then solve for n.
Three-fourths of a number equals 3 times the number increased by 9.
Hope you can help. Thanks.
Jill
Click here to see answer by music974(43)

Question 51666: I am not sure what order to do this equation. I have just re enrolled in College after many years. This is an economic question that requires algebraic skills. I do not remember what the order of Add, Subtract, Multiply and Divide is. Could you please help? Thanks,
Paul
D=1000+.20*10,000-10*50-20*P

Click here to see answer by THANApHD(104)

Question 51835: This was the answer I got on this problem +2 1/2 . please tell me if i am correct.
Question: Ty got a score of t on a test. Warren's score was 2 more than half Ty's score. What was it? (was my answer correct? If not, can you help me?)
Click here to see answer by checkley71(8403)

Question 51832: My answer for this problem was- rx2 - Could you tell me if I am correct?
Question: Arnold walked r miles. Ralph walked 2 miles farther. Represent the distance Ralph walked. (was my answer correct? If not, can you help me?)

Click here to see answer by checkley71(8403)

Question 51810: Simplify:
(6x^2 +4x-10)-(4x^2 -6x+4)

Click here to see answer by funmath(2933)

Question 52072: -8x-24=-291/3
Click here to see answer by tutorcecilia(2152)

Question 52257: Can someone help me with this problem?
I need to evaluate the followig expression:
(18 - 3) x 5
Thanks,
Lyn
Click here to see answer by tutorcecilia(2152)

Question 52279: (Can someone help me with this problem?
It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this year?
Thanks,
Sher
Click here to see answer by funmath(2933)

Question 52303: I don't understand how to do these particular math problems. Exam. m2-6;m=4
Click here to see answer by checkley71(8403)

Question 52199: Can someone help me on this problem?
Evaluate the following expressions:
(18 - 3) * 5
Thank you,
Lyn
Click here to see answer by checkley71(8403)

Question 52379: Can someone help me with this problem?
I need to evaluate:
|4| + | -3|
Thanks,
Sher
Click here to see answer by funmath(2933)

Question 52382: Can someone help me solve this problem?
25/2 . 4/5
Thanks,
Sher
Click here to see answer by rapaljer(4671)

Question 52383: Can someone help me on this problem?
I need to divide and round the quotient to the nearest thousandth:
3.041 divided by 0.37
Thanks,
Sher
Click here to see answer by dreamgirl(3)

Question 52400: what is the answer with the steps to 6x-3y?

Click here to see answer by checkley71(8403)

Question 52521: A boy is 4 years old and his sister is three times as old as he is. When the boy is 12 years old, how old will his sister be?
Click here to see answer by darq(90)

Question 52571: Can someone help me on this problem?
I need to identify the property that is used.
4 * (3 + 2) = (3 + 2) * 4
Is it Associative property or Associate property of addition?
Thanks,
Sher
Click here to see answer by Nate(3500)

Question 52569: Can someone help me on this problem?
The Kinetic energy of a particle of mass m is found by taking one-half of the product of the mass (m) and the square of the velocity (v). I need to write an expression for the Kinetic energy of a particle.
Thank you,
Sher
Click here to see answer by Nate(3500)

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