Question and answer
Which of the following abbreviations requires the use of a period or periods? A. Fe (the chemical symbol for iron) B. YWCA (an organization for young women) C. PA (the abbreviation for Pennsylvania) D. am (the abbreviation for before noon)
am (the abbreviation for before noon) requires periods: a.m.
Question
Asked 12/18/2017 5:16:16 PM
Updated 12/18/2017 5:39:18 PM
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am (the abbreviation for before noon) requires periods: a.m.
Added 12/18/2017 5:39:18 PM
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Simplify (–8q^3r^4s^2)^2 = ? A. –64q^9r^16s^4 B. 64q^6r^8s^4 C. –64q^6r^8s^4 D. 64q^9r^16s^4
Question
Not Answered
Updated 109 days ago|12/30/2018 10:58:59 AM
2 Answers/Comments
(–8q^3r^4s^2)^2 = 64q^6r^8s^4
Added 12/11/2017 3:59:18 PM
This answer has been confirmed as correct and helpful.
Find the value of x in the equation 2(x – 3) + 5x = 5(2x + 6). A. –12 B. 12 C. –2 D. 2
Weegy: 2(x – 3) + 5x = 5(2x + 6); 2x - 6 + 5x = 10x + 30 ; 7x - 6 = 10x + 30 ; 7x - 10x = 30 + 6 ; -3x = 36 ; x = 36/-3 ; x = -12 User: Find the value of n in the equation 6.2n – 3.7n = 85 + 45. A. 13.13 B. 16 C. 52 D. 325 (More)
Question
Updated 12/12/2017 1:44:46 AM
1 Answer/Comment
6.2n – 3.7n = 85 + 45
2.5n = 130
n = 130/2.5
n = 52
Added 12/12/2017 1:44:46 AM
This answer has been confirmed as correct and helpful.
There are two factories in the town of Lemming. Factory A has 4 times as many workers as Factory B. Factory A has 1,160 workers. How many workers does Factory B have? A. 1,450 B. 5,800 C. 4,640 D. 290
Question
Not Answered
Updated 12/12/2017 1:42:23 AM
1 Answer/Comment
Factory A has 4 times as many workers as Factory B. Factory A has 1,160 workers. Factory B has 290 workers.
1,160/4 = 290
Added 12/12/2017 1:42:23 AM
This answer has been confirmed as correct and helpful.
Solve the system of equations 3y + 2z = 12 and y – z = 9. A. y = 6, z = 15 B. y = –6, z = 15 C. y = 6, z = –3 D. y = 24, z = 15
Question
Updated 12/12/2017 1:53:18 AM
1 Answer/Comment
3y + 2z = 12

y – z = 9



y = z + 9

3(z + 9) + 2z = 12

3z + 27 + 2z = 12

5z + 27 = 12

5z = 12 - 27

5z = -15

z = -15/5

z = -3



y - (-3) = 9

y + 3 = 9

y = 9 - 3

y = 6



Solution set: y = 6, z = -3
Added 12/12/2017 1:53:18 AM
This answer has been confirmed as correct and helpful.
Solve the system of equations 2x + 3y = 40 and –2x + 2y = 20. A. x = –10, y = 20 B. x = 10, y = 20 C. x = 2, y = 12 D. x = –6, y = 4
Question
Updated 12/12/2017 1:48:29 AM
1 Answer/Comment
2x + 3y = 40
–2x + 2y = 20

(2x + 3y = 40) + (–2x + 2y = 20)
5y = 60
y = 60/5
y = 12

2x + 3(12) = 40
2x + 36 = 40
2x = 40 - 36
2x = 4
x = 4/2
x = 2

Solution set: x = 2, y = 12
Added 12/12/2017 1:48:29 AM
This answer has been confirmed as correct and helpful.
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