use the prime factorization what is the L.C.M for 28,42,56

use the prime factorization what is the L.C.M for 28,42,56

find the H.C.F of the following 26 and 65. And 21, 35 and 56

I dont know I don't know I don't know

-15y +4 +x = 9x -4y

I need help pleaseeeee!!!! I don not understand this at all

Mrs Jenkins has five children. Her youngest child is two years old. The next three children have consecutive ages. Her oldest child is two years older than the second oldest. If the combined age of...

what is the greatest number of whole liters you could pour into a one gallon Container without it overflowing

I don't know what to do to find per minute it takes to fill the pool and I don't get it

Hello guys, i need a bit of guidance with this problem; In a truncated right cylinder, the top plane makes an angle of 45deg horizontal. and the shortest and longest elements are 27...

Y=x2-2x-3

a cube shaped container will hold 8,000 cubic centimeters of water. what is the length of an edge of the container

Let f(x)= |2x-3| and g(x)= |-7+2x|. Find all x for which f(x)=g(x) After solving I got no solution but it does not seem right.

Please help.

i am stuck

There are 23 boys in the class. This is 16 more than 3 times the number of girls. How many girls are in the class?

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I had $100 stolen from my register five minutes later the thief came in with the same hundred dollar bill and bought $70 worth of products I gave him $30 in change back how much did I lose in tot...

Math problem solve

restrictions are: uses each of the four operations at most once uses no parentheses and uses only the digit 3.

There are 25 ducks, each duck having different running speeds. What is the minimum number of duck races required to determine the 3 fastest ducks with the provisions of every duck race followed by...