Question

please help!! write photo1. and write the answer photo2. and so on please I'm struggling!!

Answer 1

Answer:

please Mark me as brainest answer

Answer 2

Answer:

1. E=½mv²

or, 25=½×m×5²

or,25=m/2×25

.:m=2

• Given,

x=-3,y=1 and z=-2

• $2 {x}^{2} - {y}^{2} - xyz$
• $2 \times 9 - 1 - ( - 3 \times 1 \times - 2) \\ = 18 - 1 - 6 \\ = 18 - 7 = 11$

So it is your answer.Hope you understand.