Answer:
C) It is the only solution to the system.
Step-by-step explanation:
3x + 3y = -30
2x + y = -17
3(-7) + 3(-3) = -30
-21 + -9 = -30
-30 = -30
True
2x + y = -17
2(-7) + (-3) = -17
-14 + -3 = -17
-17 = -17
True
Answer:
<u>∠J = 31.06°</u>
Step-by-step explanation:
Taking the inverse sin function :
- sin ∠J = 1.6/3.1
- J = sin⁻¹ (0.516)
- <u>∠J = 31.06°</u>
Add the corresponding elements,
Let A1, A2, B1 and B2 be the elements of the new matrix after addition.
Therefore, A1 = 1+(-2) = - 1
A2 = - 4+6 = 2
B1 = 3+(-2) = 1
B2 = 5+4 = 9
D is the correct one
