Math 99 Homework with answers November 25th 2013
Reuven Hoffman
Problem 1 Divide the equation 24x4-28x3/2x
Problem 2 Divide the equation 72x6-27x4+45x/9x
Problem 3 Divide the equation 100x16-50x14+40x12-110x10/10x18
Problem 4 Simplify the following 25x3+1
Math 99 Homework Problems with Answers December 12th 2013
Problem 1 factor completely r2 -81
Problem 2 Factor Completely c2-169
Problem 3 can b2-15 be factored or is it prime
Problem 4 Factor Completely a4-196
Problem 5 Factor Completely v4-1
Problem 6 Fa
MTH 99 Fall2010 Practice for Exam II
1
NOTE: NO CALCULATORS WILL BE ALLOWED ON THIS EXAM!
Exam time: 50 minutes.
1.
Systems of Linear Equations
Solve the following systems of linear equations by substitution (12 points)
I.
2x + 3y = 28
y = 4x
II.
x + 2y =
MTH 99 Worksheet 7 Solutions
1
Solve the following systems of equations
1.
x + y = 12
y = 3x
Solution
Substitute y = 3x in the rst equation and we get,
x + 3x = 12 = 4x = 12 =
12
4x
=
= x = 3
4
4
Since y = 3x, we get y = 3(3) = 9.
2.
5x + 2y = 1
2x y = 13
MTH 99 Worksheet 6 Solutions
1
1. Let f = cfw_(0, 1), (2, 3), (5, 7), (9, 4). State whether f represents y as a function of x. What is the
domain and range?
Solution
Here, every x coordinate (rst coordinate) appears only once (or no rst coordinate gives m
MTH 99 Worksheet 2, Sep 15, 2010
Problems 6, 19, 28, 44, 52 page 129
Solve using the additive property of equations
1)
x8=9
Add 8 on both sides
x8+8=9+8
This gives
x = 17
2)
8x + 5 = 7x
Bring all the
x
terms on the left side. So subtract
7x
on both sides
MTH 99 Worksheet 3, Sep 22, 2010
Problems 30 and 46 page 186-187
1) Solve the equation
x + 10
x+4
=
6
8
First, cross multiply and obtain
8(x + 4) = 6(x + 10)
which we can simplify using distributive property as
8x + 32 = 6x + 60
Subtract 6x and 32 from bo
MTH 99 Worksheet 4 Solutions
1
1. Solve 5x 4 < 6
Solution
Add 4 on both sides and we get
5x < 10
. Divide both sides by -5 and reverse the inequality and this gives
x > 2
. So the solution is (2, ). The graph is
-5
-4
-3
-2
-1
0
1
2
3
4
5
2. Solve 14x 6 +
MTH 99 Worksheet 5 Solutions
1
1. Find the slope of the line joining (-8,0) and (0,-5)
Solution
If we denote (x1 , y1 ) = (8, 0) and (x2 , y2 ) = (0, 5) the slope is
5 0
5
y2 y1
=
=
x2 x1
0 (8)
8
2. Solve Find the slope of the line 6x + 4y = 4
Solution
We
MTH 99 Worksheet 10 Solutions
1
Simplifying rationals using laws of exponents
1.
(x 2 )2
3
7
(x2 ) 3
Solution
First, multiply the exponents of the numerator and denominator. This gives
4
(x) 3
14
(x) 3
Now, we have a quotient of terms with same base and d
MTH 99 Fall2010 Practice for Exam I
1
NOTE: NO CALCULATORS WILL BE ALLOWED ON THIS EXAM!
Exam time: 50 minutes. YOU MUST BRING YOUR URI ID.
Part I
1. Each problem has exactly one correct answer. Circle the correct answer for each question. No partial
cred
MTH 99 Worksheet 9 Solutions
1
Factorize the following polynomials using appropriate rules.
1.
x2 + 14x + 48
Solution
We need 2 numbers whose sum is 14 and product is 48. They are 6 and 8. The factors are (x + 6) and
(x + 8)
2.
x2 2x 48
Solution
The numbe
Math 99 Homework with Answers October 16th
Problem 1 Find the slope from the two given coordinates (9,3) and (10,-2)
Problem 2 Find the slope from the two given coordinates (6,7) and (10,-8)
Problem 3 Find the slope from the coordinates (9,5) and (-9,5)
P
Math 99 Homework With Answers October 2nd 2013
Problem 1 There are 100 members of the U.S senate. After an election there were four more
democrats than republicans. How many representatives were there from each party.
Problem 2 The owner of a sandwich sho
Math 99 Homework November 6th 2013 with answers
Problem 1 Is (4,-8) the solution to x+y=-4 4x+3y=12
Problem 2 Is (-3,-4) the solution to 3x+5y=-29 4x+2y=-20
Problem 3 use the elimination method to solve x-y=2 x+y+6
Problem 4 Solve for the solution set x-2
Math 99 Homework November 20th with answers
Problem 1 Multiply 3q(9r3)
Problem 2 Multiply (4x6)(2x6)(-x2)
Problem 3 Multiply 5x3(6x2-4x+4)
Problem 4 Find the product of 5xy4(6xy2-5xy+7x)
Problem 5 Find the product of (3x+5)(2x3-4x2+3x-6)
Problem 6 Multipl
Math 99 Homework December 4th 2013
Reuven Hoffman
Problem 1 Use the foil method to solve the following (a+9)(a+7)
Problem 2 Use the foil method to solve the following (a+7)(a+5)
Problem 3 Factor the trinomial x2+14x+48
Problem 4 Factor the trinomial x2+10
Math 99 Homework with answers November 13th
Problem 1 how many terms does t4 have
Problem 2 What is the coefficient of
Problem 3 Can this polynomial be simplified -2y5+8y5
Problem 4 Can this polynomial be simplified 4m3+(-7m3)
Problem 5 Simplify the expre
Math 099 Homework September 18th With Answers
Problem 1 What is the value of the expression 62
Problem 2 Evaluate the expression 46-14
Problem 3 What is the value of the expression +
Problem 4 Evaluate the expression 610-47
Problem 5 Calculate 4[6+(23)]
Math 99 Homework September 11th 2013 with answers
Problem 1 is 67 a prime or composite number
Problem 2 Is 6 a prime or composite number
Problem 3 Write out the prime factorization form of 114
Problem 4 write in lowest terms
Problem 5 Write the fraction i
MTH 99 Worksheet 8 Solutions
1
Simplify using laws of exponents. The laws of exponents used in these problems are the following.
1.
am an = am+n
2.
(am )n = amn
3.
(ab)m = am bm
4. Assuming that b = 0
a
b
m
=
am
bm
1.
(9a + 2)(9a2 + a + 1)
Solution
We sho
MTH 99 Fall2010 Practice for Final Exam
1
NOTE: NO CALCULATORS WILL BE ALLOWED ON THIS EXAM!
Exam time: 3 hours.
1.
Linear Equations and Systems of Linear Equations
(30 points)
I. Solve the linear equation 7(x 2) + x = 2(x + 2)
II. Solve the equation
2(x