Saturday
May 25, 2013

# Homework Help: Math 115

Posted by Johnnie on Saturday, February 7, 2009 at 12:23am.

What is the greatest common factor of 15, 30, and 45. My answer is 3.
let me know if this right.

Subtract - 7 -(-5.7).= 50
Is this right

• Math 115 - Salman, Saturday, February 7, 2009 at 1:40am

greatest common factor is the hightest possible number which can divide all the three , 15, 30 and 45 all are divisble by 15 so the gcf is 15 :)

• Math 115 - Johnnie, Saturday, February 7, 2009 at 1:48am

Subtract -7-(-5.7).
is the answer is 3.99

• Math 115 - Salman, Saturday, February 7, 2009 at 1:58am

Does the dot"." represents multiplication ? if so then

-7-(5x7) = -7 - (-35)
'''''''' = -7 + 35
'''''''' = 28

• Math 115 - Reiny, Saturday, February 7, 2009 at 10:04am

Subtract -7-(-5.7)

-7-(-5.7)
= -7 + 5.7
= -1.3

I found Salman's response to this post intriguing.
We should clearly be aware of the fact that there are different ways to represent decimal numbers.
In many English speaking countries like US, Canada, UK, and Australia, the "dot" is used as a decimal place indicator, while a large portion of the rest of the world uses the comma to show where the decimal place is.

Just an observations for what it is worth.

• Math 115 - Johnnie, Saturday, February 7, 2009 at 3:20pm

It subtact problem negative 7 minus(negative5 point7)=what

• Math 115 - Ms. Sue, Saturday, February 7, 2009 at 7:46pm

Happy Birthday!!
Those are all correct, keep practicing!!

 First Name: School Subject: Answer:

Related Questions

math - What is the greatest common factor of 18, 30, and 45? I come up with 3 as...
Math 115 - What is the product of 225 and 507? What is the greatest common ...
Greatest Common factors - I dont know these answers. Can you help me? Greatest ...
math - What is the greatest common factor of 18, 30, and 45? How do figure this ...
Math - If a is the greatest common factor of 72 and 48, and if b is the greatest...
math/algebra - subtract. express in simplest form 13x/30 - 4x/ 15 = factor the ...
Math - Did I solve this problem right? Here is the question: Use least common ...
Math - list the common factors for each pair of numbers. Then find the greatest ...
Grade 9 Greatest Common Factor Algebra - Joey is having a party during the Major...
Math - The greatest common factor of 20, 45, and 116.

For Further Reading

Search
Members
Community
FEATURES