math

-3(-9) – |-5 – 3

9c^3+7c-(3c^3-12+c)

4. Solve 4x- 3(5x-8) =23-9(x+2) . Please show all of your work

5. Solve the following equation for z. Please show all of your work.
x=1/25(22z-9w)

6. Solve -14x -7(4-7) <(2x-15) . Write your solution using set builder notation. Please show all of your work
7.
During one year, the Hills' real estate bill included \$413 for miscellaneous services. Of this amount, 8% went to the local homeless shelter. How much money did the homeless shelter receive?

Find the length and width of a rectangular lot with a perimeter of 108 meters if the length is 8 meters more than the width.

9. 9. Solve. Please show the algebraic inequality you used and show all of your work.
The Lido Company rents copy machines for a monthly charge of \$300 + 10 cents per copy. The Lumsden Company rents copy machines for a monthly charge of \$500 + 3 cents per copy. How many copies make the Lido Company more expensive than the Lumsden Company?

1. 👍 0
2. 👎 0
3. 👁 107
1. Jiskha is NOT a dumping ground for homework. We help students, but we do not do the work for them. If you continue posting a lot of questions with no work shown, you may be banned from posting here.

Also see Writeacher's message to you earlier today.

http://www.jiskha.com/display.cgi?id=1313421001

1. 👍 0
2. 👎 0
2. 2. I'm assuming you meant:

-3(-9) - [-5-3] =
27 - 8 = 19.

3. 9c^3 + 7c -(3c^3-12+c) =
9c^3 + 7c - 3c^3 + 12 - c =
6c^3 + 6c + 12 =
6(c^3 + c + 2).

4. Similar to # 3.

5. x = 1/25(22x - 9w) =
Multiply both sides by 25:
25x = 22x - 9w,
25x - 22x = 9w,
3x = 9w,
X = 3w.

6. -14x - 7(4-7) < (2x-15)
-14x + 21 < 2x-15
-14x - 2x < -15 - 21,
-16x < -36,
X > -36/-16,
X > 2 1/4.

1. 👍 0
2. 👎 0
posted by Henry
3. 7. 0.08 * \$413 = \$33.04

8. Width = X-Met3rs.

Length = (x+8) Meters.

2x + 2(x+8) = 108m.
2x + 2x + 16 = 108,
4x = 108 - 16 = 92,
X = 23m = Width.

X+ 8 = 31m = Length.

9. 0.1x + 300 > 0.03x + 500,
0.1x - 0.03x > 500 - 300,
0.07x > 200,
X > 2857 Copies.

1. 👍 0
2. 👎 0
posted by Henry

Similar Questions

1. math

I am not sure how to do these. 1. Simplify 4√6/√30 by rationalizing the denominator. Show your work. 2. Simplify (2√5 + 3√7)^2 Show your work. Justify each step.

asked by edison1969 on July 30, 2014
2. Algebra 2

1.What is the vertex from the equation? Y=x^2+12x=4 (Please show your work to show me the steps to get to the right answer.) 2. Use the quadratic formula to solve the equation. x^2-7x-6=0 (Please show your work to show me the

asked by Sam on November 27, 2018
3. Algebra 1

Simplify using long division. (remember to show all your work.) 3. (72-8x^2+4x^3-36x)/(x-3) 4. (8b^3-6)/(2b-1) simplify the expression, if possible. state the excluded values, if any. 5. 10x^2-25X+15^5x-5 6.2w^2-18^w^2+6w+9

asked by Natalia on January 13, 2017
4. Math

Simplify the expressions in each pair. (2 marks each) (Show your work) i) (x^2-x-2)/(x+1),g(x)=(x-2) My work on simplifying the functions: (x-1)(x+2)/(1) (x-1)(x+2) ii) (x^2-x-12)/(x+3), g(x)=(x^2-6x+8)/(x-2) My work on

asked by Alex on January 10, 2015
5. Math

Consider the equation below. 1/5(x+2)+2x = 6x-10 Part A: Which property can be used to simplify the expression 1/5(x+2)? Answer _______________ Part B: Move all x-terms to one side of the equation and simplify. Show your work.

asked by Jayson Angole on March 31, 2013
6. algebra

simplify and show all work 11+12^2-(-11)*12 is this right11+144-(-11)*12 155-(-11)*12 144*12 1,928 simplify -(8m)-(-7m+2) 15m-2 according to order of operation what should be done first when evaluating this expression do not solve

asked by babygirl on September 3, 2011
7. Mathematics

asked by Cali on January 22, 2017
8. Calculus

Let f (x) = 5x^2 – 9 and g(x) = x – 3. (a) Find the composite function ( f o g)(x) and simplify. Show work. (b) Find ( f o g)(2) . Show work.

asked by Brian on March 10, 2012
9. algebra

Let f(x)= 2x^2 +7 and g(x)= x – 6. (a) Find the composite function (f*g)(x) and simplify. Show work. (b) Find ( f*g)(1). Show work.

asked by david on May 9, 2014