Posted by NENAS on Tuesday, July 7, 2009 at 6:42pm.
1. Start by performing operations in the parentheses:
84 / [-1 + 7]
A negative multiplied by a negative is a positive.
Now we have 84/[6], which equals 14
2. Start by finding prime factors of the numbers:
240 = 4*6*10 = 2^2 * 2 * 3 * 2 * 5 = 2^4 * 3 * 5
10000 = 10^4 = 2^4 * 5^4
4500 = 9 * 5 * 100 = 3^2 * 5 * 10^2 = 3^2 * 5 * 2^2 * 5^2 = 3^2 * 5^3 * 2^2
Now look for common factors in the prime factorizations:
240 = 2^4 * 3 * 5
10000 = 2^4 * 5^4
4500 = 3^2 * 5^3 * 2^2
The greatest power of 2 shared by all of them is 2^2.
The greatest power of 3 shared is 3^0.
The greatest power of 5 shared is 5^1. Therefore, the GCF is 2^2 * 3^0 * 5^1 = 4*1*5 = 20
3. 0.000294. Multiply by 10 until there is a number in the units place:
.000294 * 10 = .00294
.00294 * 10 = .0294
.0294 * 10 = .294
.294 * 10 = 2.94
You multiplied by 10 four times. Therefore, the number is 2.94 x 10^(-4) in scientific notation.
Thank you so much it makes a lot more sense to me now. I have my final exam next week so I reviewing over my work. Once again thank you
I have a question what do you mean by ^ what does that symbol mean I know that * means multiplication.
^ means to the power of.
For instance, 4^2 is 4 squared and 5^3 is 5 to the third power or 5 cubed.
Has the content in this course allowed you to think of mathematics as a useful tool? If so, how? What concepts investigated in this course might apply to your personal and professional life?
what is the answer if I use lattice multiplication to find the product in 124 x 56