Math Help

Archive for February, 2010

Question: Math homework problems PLZ help?

-3(7+3b)<-6b-3

2d-10>6(7-4d)

PLZ explain how u got the answers so I can understand.

Answer: You have to multiply the -3 to the 7 and the 3b remember since you are multiplying -3 X positive 3B the answer comes out to

-21-9B<-6b-3

you then add 9b to each side

-21<3b-3

add the - three

-18<3B

divide 3 on each side

-6

It's is practically the same for the other one
here is the answer see if you can figure out if you can get it
remember you switch the sign to the opposite side if you divide by a negative

D>2

Math Call to 911

Below is a video showing different polygon shapes and names of polygons in geometry. The polygon shapes video starts with defining what a polygon is, then introduces polygon names as well as polygon shapes and types of polygons. You can use this polygon shapes video as part of your lesson plans for polygons. There are regular polygons, congruent polygons, irregular polygons and more.

Polygon Shapes

What is a polygon?

A polygon is a closed planar figure formed by three or more line segments. Polygons are named according to the number of sides they have. Polygons are further defined by the angles between the sides of the polygons as well as the lengths of the sides.

Question: (-5)(24)= Math homework help please?

My son has math homework I can’t help him with, are there any math experts out there or sites to go to for help? What do you do when you can’t help your kids with their math? The above equation is an example of tonight’s HW…how do you explain it please, any help would be wonderful. Thanks!
Thanks Christina!
* Thanks Cristina (sorry for the misspell)

Answer: just multiply the numbers like you would usually do. if the two numbers are negative then your result is positive, if one is negative and the other is positive then your result is negative.
=] hope it helps

Teaching Kindergarten Math : Teaching Kids to Count Dots when Adding