Math Help

Archive for February, 2007

Question: Help me with math problem solving? ?

Use the digits 1, 3, 5, and 7 to make two number whose product is 2325.

And please show how you did it.
OMG. I suck at problem solving, not one of my strong points.
Find three consecutive even integers so that six less than two times the largest number is equal to the sum of the other two?

Answer: 75 x 31 = 2325

I dont know if there is any formula to do this or not,
but i just used the highest possible 2-digit number and multiplied it with the remaining numbers.

however, there maybe other solutions to this as well…

Basic Math Skills : Math Problem Solving

Estimating the Variance

and the unbiased estimator:

Confidence interval for is

At 95% confidence interval,

, and

Note that:

For example,

Question: Can someone help me with this exponent math problem?

Its hard to type exponents sooo ^ will be the exponent sign * example x^3 ………3 would be the exponent

please explain the awnser and why is it the awnser

simplify each expression

(a) 3x^5 + 2x^5

(b) 3x^5 * 2x^5 *= multiply

Answer: 3x^5 + 2x^5 = 5x^5
Both are the same variable, with the same exponents, but different coefficients.

It’s similar to:
2ab + 4ab = 6ab

3x^5 * 2x^5 = 6x^10
The coefficients of “x” are multiplied together to equal 6.
The exponents of “x” are multiplied together also.

Example:
x^2 * x^4 = x^8

Hope this helps.

Exponents – YourTeacher.com – Math Help