Welcome

Anti Essays offers essay examples to help students with their essay writing.

Sign Up

Math 221 Excercises Essay

Open Document

Below is an essay on "Math 221 Excercises" from Anti Essays, your source for research papers, essays, and term paper examples.

01 . 24-(19-11) +{(-2)2/2}(-5)+32 =

24-8+(4/2)(-5)+9
24-8+(2)(-5)+9
24-8+-10+9
15

02. (3/5)+(1/8) / (3/4) – (1/7)*(2/3) =

(3/5) + (1/8) * (4/3) – (1/7)*(2/3)
(3/5) + (1/6) – (2/21)
(18/30) + (5/6) – (2/21)
(23/30) – (2/21)
(483/630) – (60/630)
423/630
47/70

03. 20 80 120

MCD = 20
20/20 = 1
80/20 = 4
120/20=6

04. a=2 b= -3

(3a-2)/8 – 6b/a
(32-2)/8 – 6(-3)/2
(9-2)/8 + (18/2)
(7/8) + (18/2)
(7/8) + (72/8)
79/8
9 7/8

05. 2x+4>5x-12

2x-2x+4 > 5x – 2x – 12
4>3x-12
12+4>3x-12+12
16>3x
1/3(16)>3x(1/3)
16/3>x
5 1/3 > x

06.15/25 = 3/x

15/25 = 3/x
(15/25) / 5/5 = 3x
3/5 =3/x
(x/1)(3/5)= (3/x)(x/1)
(3/5)x = 3
(5/3)(3/5)x = 3(5/3)
x=5

07.(6x2+1)(2x-2)

(6x2+1) (x-1)2
(6x3- 6x2 + x – 1)2

08.4x2+8x+3
(2x+3)(2x+1)

09. 4(5x-2y) = 3tx – 5e
20x - 8y = 3tx -5e
-8y – 20x + 20x   = 3tx – 5e + 20x
-8y = 3tx – 5e + 20x
-8y + 5e = 3tx + 20x – 5e + 5e
-8y + 5e = 3tx + 20x
(1/3t)(-8y + 5e) = 20x + (3tx)(1/3t)
(-8y+5e)/3t = 20x + x
(-8y+5e)/3t = 21x
(1/21)((-8y+5e)/3t) = 21x (1/21)
(-8y+5e)/63t = x

Show More


Citations

MLA Citation

"Math 221 Excercises". Anti Essays. 11 Dec. 2018

<https://www.antiessays.com/free-essays/Math-221-Excercises-170657.html>

APA Citation

Math 221 Excercises. Anti Essays. Retrieved December 11, 2018, from the World Wide Web: https://www.antiessays.com/free-essays/Math-221-Excercises-170657.html