Which expression represents the determinant of det(A) = (2)(9) – (1)(3)
det(A) = (2)(9) + (1)(3)
det(A) = (2)(3) – (1)(9)
det(A) = (2)(3) + (1)(9)

english, cause i can’t you

3 qrs + 3/2 xy hope this : /

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

answe: it will take 4.5 hours for naomi and clair to paint an equal number of square feet

hope i

-lavira : )