Hello! Could you please help me find the LCM (least common multiple) for the following problems?
7,10 9,4 8,12

thank you!

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

What’s the answer ? use the picture to see the problem

In an isosceles triangle, the vertex angle is 112 degrees. what is the measure of each base. a.34 b.24 c.44 d.54