Math Help

Archive for December, 2007

Question: Help on typing/making math equations for microsoft word?

is there a website where i can download a free math equations maker/editor? i need one to help me make math questionnaires. thanks!

Answer: juz use microsoft word 2007
u can create math equation easily..they provide u

Math Help Quadratics: The Quadratic Formula

Question: Which two numbers have 7 as the greatest common factor?

Math Help PLEASE
A 2+3/4
B 5/2
C11/4
D 2 3/4

Answer: 21 and 28
21 and 35
21 and 49
21 and 77
21 and 91
21 and 119
……
28 and 35
28 and 49
28 and 77
28 and 91
28 and 119
………
35 and 49
35 and 77
35 and 91
35 and 119
………

………
Many more.

Greatest Common Factor – GCF – YourTeacher.com

Question: How do you work out the mode, median, range and the mean of this maths question?

10, 10, 9, 3, 7, 6, 5, 9, 9, 5, 2, 6, 6, 4, 7, 8, 9, 7, 3, 1

(20 numbers)

Median: 10, 10, 9, 3, 7, 6, 5, 9, 9, 5, 2, 6, 6, 4, 7, 8, 9, 7, 3, 1
Range: 10-9=1
Mean: 6.25
Mode: ???
please help??

Answer: Put the numbers in rank order. Say from lowest to highest.
10, 10, 9, 3, 7, 6, 5, 9, 9, 5, 2, 6, 6, 4, 7, 8, 9, 7, 3, 1

1,2,3,3,4,5,5,6,6,6,7,7,7,8,9,9,9,9,10,10.

The MODE. is the term that appears most frequently.
In this case ’9′ as there are four of then.

The MEDIAN is the term that appears at the absolute mid point of the list. As there are twenty terms, there will ten terms to the lower side and tern terms to the higher side. The tenth term is ’6′ and the eleventh term is ’7′. So the absolute mid point is ’6.5′ ( (6 + 7)/2).

The RANGE is the difference between the highest and lowest terms.
In this case 10 – 1 = 9 the Range.

The MEAN is the sum of the terms divided by the number of terms.
( 1+2+3+3+4+5+5+6+6+6+7+7+7+8+9+9+9+9+10+10) / 20 =
126/20 =
6.3 The Mean.

Hope that helps !!!! .

Mean Median & Mode Math Learning Upgrade