Vocab & communication
The variable in
2 + a
What is a
Simplify 2a4x 3a3
6a7
Identify the number 0.00245 in scientific notation
What is
2.45 x 10-3
The coefficient in
-2a4b
What is -2
Simplify
(2a3b)4
What is
4a12b4
Identify the number 6.3 x 105 in decimal notation
what is
630 000
Explain the second index law and give an example to show this mathematically.
What is:
a^n/(a^m) =a^n^-^m
The second index law state that when bases are the same and you are dividing you can subtract the powers.
e.g:
10^6/(10^2)
=10^4
Simplify:
(15x^7)/(5x^12)
what is:
3/x^5
Simplify and write in scientific notation
(1 xx 10^8)/(1 xx 10^3)
What is :
1 x 105
A multiple choice question requires a student to multiply 66 by 63 . The student is having trouble deciding which of these four answers is correct: 616, 69, 369or 3618.
Which is the correct answer? support your answer with mathematical reasoning.
What is:
69, index law one state when bases are the same and you are multiplying you add the indices and the base must stay the same. In 66x63 the bases are both 6 so we can add the indices. 66+3 simplifies to 69
Simplify:
(-5x^5*x^3 2x^4)/((5x^6)^2)
what is:
-1
The number 0.087 52 to 2 significant figures is:
what is:
0.088