Give the rule and the answer for -18+6
Rule: Addition of unlike signs, subtract and keep the sign.
Answer: -12
Is this Rational or Irrational and why?
1. 5.55555555
Rational because the 5 is repeating
Solve
x-15=-21
x=-6
solve:
4x-5=-29
x=-6
Solve
−12 = 3 − 2k − 3k
k=3
Give the rule and the answer for -3*3
Rule: multiplication of unlike signs equal a negative
Answer: -9
Is this Rational or Irrational and why?
2. Square root of 43
Irrational because its an unperfect square
Solve:
x/3=-6
x=-18
Solve
7x+8=-48
x=-8
Solve:
6 = −3(x + 2)
x=-4
Give the rule and the answer for -3-(-6)
Rule: KCC
Answer:3
Is this Rational or Irrational and why?
3.31234567098....
Irrational because it never terminates
Solve
-4x=-44
x=11
Solve
b/7-15=5
b=140
Solve:
75 = 3(−6n − 5)
n=-5
Give the rule and the answer for 49/7
Rule: Like signs equal a positive
Answer: 7
What makes a number Rational
1. It repeats
2. Perfect square
3. Can turn into a fraction
4. Terminates
Solve
b/12=-20
b=-240
solve:
x/-3 - 6=4
x=-30
Solve
−4k + 2(5k − 6) = −3k − 39
k=-3
What are the 5 rules of Integers?
1. Addition of like signs
2. Addition of unlike signs
3.KCC
4. Like signs equal a postive
5. Unlike signs equal a negative
What Makes a number Irrational?
1. does not Come to a stop
2. Repeating dots at the end
3. Unperfect square
4. Goes on forever
Solve:
-40x=400
x=-10
What are the 5 steps to solving an equation?
On the wall or in notes
Solve
−10n + 3(8 + 8n) = −6(n − 4)
n=0