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

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Algebra: Evaluation of expressions, parentheses

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Question 115810: Simplify:
a + 5a + 2a
Click here to see answer by Nihat Routsong(11)

Question 115811: Simplify:
(-6a)(4b)
Click here to see answer by Nihat Routsong(11)

Question 115857: Please help. I am not sure about the topic because I am not sure which topic to pick
Multiply.
9q^8 • 9q^5
Thanks
JMS

Click here to see answer by checkley71(8405)

Question 115928: Please help.
Please Evaluate the following.
(15-5)÷ [(12 ÷ 2 • 2) -2]
Thanks
JMS

Click here to see answer by checkley71(8405)

Question 116092: solve
16y=64
Click here to see answer by bucky(1732)

Question 116088: In the expression 13y + 4 identify..
the variable____
the coefficient______
Click here to see answer by bucky(1732)

Question 116084: Simplify
-10(2a - 6b)
Click here to see answer by bucky(1732)

Question 116091: m - 25 = -10
Click here to see answer by bucky(1732)

Question 116093: solve
n-2n = -14
Click here to see answer by jim_thompson5910(13794)

Question 116147: 11P3 evaluate the expression
Click here to see answer by jim_thompson5910(13794)

Question 116152: 11p3 evaluate expression
Click here to see answer by jim_thompson5910(13794)

Question 116082: simplify
9x + 3y - (5x + y)
Click here to see answer by Fombitz(2113)

Question 116172: In how many ways can a student work 7 out of 10 questions on an exam?
Click here to see answer by checkley71(8405)

Question 116089: Write an equation. Solve algebraically, the check
Twelve times a number is equal to 216. what is the number?
Click here to see answer by keerthu(5)

Question 116089: Write an equation. Solve algebraically, the check
Twelve times a number is equal to 216. what is the number?
Click here to see answer by jim_thompson5910(13794)

Question 116086: What is the simple interest when $1,000 is invested at 4 1/4% for 2 years?
Click here to see answer by checkley71(8405)

Question 116087: Write an algebraic expression for each verbal expression.
a number increased by 20 (X+20)________
the quotient of b divided by 7 (B/7)_________
Click here to see answer by checkley71(8405)

Question 116085: Use the formula C= 5/9 (F-32 degrees) to find the Celsius temperature that is equivalent to the 59 degrees Fahrenheit.
Click here to see answer by checkley71(8405)

Question 116083: How far will Jim run in 12 seconds, if his speed is 42.4 feet per second?
Click here to see answer by checkley71(8405)

Question 116257: twenty-five more than r
Click here to see answer by edjones(3299)

Question 116299: Simplify:
5(2a + b) - (a + 3b)
Click here to see answer by bucky(1732)

Question 116343: Please help.
Use your calculator to evaluate the following expression if x = 8.48 and
y = -3.71 and z = -4.19. Round your answer to the nearest tenth. x - yz
Thanks
JMS
Click here to see answer by SHUgrad05(58)

Question 116525: the balences of two investments are changing at steady rates. one investment of $1450 is decreasing by $105.75 each month. the other investment of $825 is increasing by $144.25 each month. write and solve an equation to find how many months it takes the balances of the investments to be the same.
Click here to see answer by stanbon(26297)

Question 116568: Solve
3x - 4(5 + x) = x + 8
Click here to see answer by MathLover1(1183)

Question 116564: Simplify
2 + 5(3)
________
7
Click here to see answer by jim_thompson5910(13794)

Question 112633: PLEASE EXPLAIN.

Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m and the area is 224m^2, find the length of the other base.

Click here to see answer by BurningFlame_marc(77)

Question 116527: 3.15x + 9.4 + 12 + 12 + 5.5x
Click here to see answer by awang1996(50)

Question 117255: Multiply. a^4 b^2 x ab^3
Click here to see answer by HyperBrain(694)

Question 117282: Subtract
(4a-3b)-(a-5b)
Click here to see answer by MathLover1(1183)

Question 117281: Add
(-5xy + 2xyz) + (xy - 3xyz)
Click here to see answer by MathLover1(1183)

Question 117280: simplify

54m third power/9m fourth power
Click here to see answer by checkley71(8405)

Question 116523: 5.1x - 11.4 = -0.9x - 17.4
Click here to see answer by awang1996(50)

Question 117774: Use the properties of addition and multiplication to complete the statement.
5 * (12 + 3) = 5 * _____ + 5 * 3
Thank you.
Click here to see answer by psbhowmick(456)

Question 117853: ax=b for x
Click here to see answer by jim_thompson5910(13794)

Question 117890: simplify
(-1) fifth power
Click here to see answer by josmiceli(3013)

Question 117893: (2c-3d) - (-7c-2d)
Click here to see answer by MathLover1(1183)

Question 117892: simplify
5y + y + 2y
Click here to see answer by MathLover1(1183)

Question 117891: simplify
m(9m to the fourth power)
Click here to see answer by MathLover1(1183)

Question 117889: Simplify

-10 + (-30)
Click here to see answer by MathLover1(1183)

Question 117888: simplify
10-6(2)/1+ -5
Click here to see answer by misscrt(37)

Question 117888: simplify
10-6(2)/1+ -5
Click here to see answer by MathLover1(1183)

Question 117887: subtract
(4a-3b) - (a-5b)
Click here to see answer by MathLover1(1183)

Question 117886: simplify
(s to the third power t)2nd power
Click here to see answer by MathLover1(1183)

Question 118012: Write the equation of each line. Give the answer in standard formusing only integers as the coefficients.
The line through (2,-3) that is perpendicular to the line y=-3x+12
The answer is x-3y=11
How do I work the problem to find the answer given?
Click here to see answer by jim_thompson5910(13794)

Question 117279:
simplify

Click here to see answer by Edwin McCravy(2922)

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