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Week 3 Quiz
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Section 3.2 General Equations
1.
Solve for the value of x
X = ____2/10__
2.
Solve 5x2y= 3 when x = 3
5 ( 3 )  2y = 3
15 2y =3
2y = 12
y = 6
Answer:
___6___
Section 3.3 General Equations Part 2
1.
Two children are sitting on a seesaw that is 12 ft long.
One child weighs 60 lbs.
The
other child weighs 90 lbs.
How far from the 90 lb. child should the fulcrum be placed so
that the seesaw balances?
Answer:
______7.2____ feet from the fulcrum
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View Full Document 2.
Solve the equation for the value of x
7(3x+6) – 4(3+5x) = 13 + x
Answer x =_ 7(3x + 6)  4(3 + 5x) = 13 + x; distribute the 7 and the 4
21x + 42  12  20x = 13 + x combine like terms
x + 30 = 13 + x subtract x from each side
x  x + 30 = 13 + x  x
30 = 13 no solution
Section 3.4
Translating sentences into equations
1.
The sum of two numbers is eighteen.
The total of three times the smaller and twice the
larger is fortyfour.
Find the value of the two numbers.
What equation would you use to solve the problem?
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This note was uploaded on 03/02/2011 for the course MATH 101 taught by Professor Miller during the Spring '11 term at University of Maryland Baltimore.
 Spring '11
 miller
 Equations

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