Download ME43 Homework #1

HW1: Read (p503-p506),
p122(#21,22,23,24,), p507(#9,10)
P122
21. 4a + 0.2 = 5
22. 4 = 3t – 0.2
23.
1
x  11  5
4
24. 13  5 
2
y
3
P507
9. x 2  2 x  1  0
10. y 2  11y  24  0
HW#5
1. Write a quadratic equation, in the
form
ax2 + bx + c = 0, whose roots are 5 and 5.
2. Write a quadratic equation, in the
form
ax2 + bx + c = 0, whose roots are -4 and
3.
3. 1. Write a quadratic equation, in the
form
ax2 + bx + c = 0, whose roots are -8 and
2.
4. The square of a number exceeds 4
times the number by 45. Find the
number(s).
HW6: (Only 1,2,3,4)
Solve for x
1. 10x2 - 25x = 0
2. 2x2 = 12x
3. -4x2 - 20x = 0
4. - 5x2 = -45x
5. A ball is thrown from the top of a
building that is 16 feet high. The path of
the ball is modeled by the equation d =
16t- 2t2, where d is the distance in feet
above the ground and t is the number of
seconds since the ball dropped.
Find
a. How far is the ball from the ground is
2 sec.?
b. How many seconds will it take for the
ball to reach the ground.
#35(HW3), set up equation only
such as ax2 + bx +c = 0 (do not solve)
HW4:
HW7: (Only 1,2,3)
1. Find two consecutive integers
whose sum is 11
2. Find 3 consecutive even integers
whose sum is 36
3. Find 3 consecutive odd integers
whose sum is 15
4. The product of two consecutive
integers is 20. Find the integers.
5. The product of two consecutive
integers is 72. Find the integers.
HW#8 (finish only 1-4)
Find x (1-3)
1. x2 = 25
2. 6x2 - 18x = 0
3. x2 = x +72
HW12: (only 1-4)
Express each radical as a rational
number with the appropriate signs.
4. The product of two consecutive
odd integers is 77 more than twice
the larger.
Find the integers.
5. The product of two consecutive
integers is 5 more than three times
the larger.
Find the integers.
6. Find three consecutive integers
such that four times the sum of all
three is 2
times the product of the larger two.
7. Find three consecutive integers
such that three times the sum of all
three equals the product of the larger
two.
HW9:
Find the roots of each equation
1. x(x-3) = 4
2. 2x2 = (x+2)(x+4)-1
3. 9x - 4 = 2x2
4. x(x+4) = 2 + 5(x+2)
5. Find two consecutive negative
integers such that the product is 42.
HW13: Simplify
1. 50
3. 12
5. 48
2. 125
4. 18
6. 200
HW14: Simplify
1.
1
4
2.
6
9
3.
50x 2
4.
32x3
5.
27x6
6.
20x5
HW15: Simplify the result
HW10:
Find x
1. x(x-8) = 2x - 25
2. x(x+3) = 18
3. x(x+4) = -4
4. x2 - 49 = 0
5. x2 - 4 = 0
6. x2 = 25
HW11:
1. Is 3.145 a rational or irrational
number?
2. Is 3
a rational or irrational
number?
3. Is 0.12357102...
a rational or irrational number?
1.
5 6 3 6
2.  6 x  
3.
4 2 
4.
5.
4 8 x  2 x
2
1
x
2
2 3x 
2
HW16: Divide and simplify
1.
1
6
8
4. Is π a rational or irrational
number?
3.
5. Is .63 a rational or irrational
number?
5. 
4 3
20 27
4 3
2.
4.

6.
3
5
9
3 3
36 48
6 3