Two easy seventh grade problems, please help !

Step-by-step explanation:

#1.         +4.9       +4.9

             m/2.8 =

              *2.8       *2.8           Multiply both by 2.8

   Calculate the answer this is your work after all!!!                

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

both triangles are similar because 2 is just smaller than the big one 1 is similar because they are facing different way's but are similar to each other

step-by-step explanation: