Answer:
D . (486 – 9 + 6) + (33 × 2)
Step-by-step explanation:
Which expression is equivalent to 486 – 9 + 6 + 33 × 2?
486 – 9 + 6 + 33 × 2
486 – 9 + 6 + 66
477 + 6 + 66
549
D . (486 – 9 + 6) + (33 × 2)
477 + 6 + 66
549
Hope this helps!
The same relationship it's multiplying and dividing because they are the same kinda of they are like cousins
Answer:
AB ≈ 6.71
Step-by-step explanation:
Calculate the length using the distance formula
d =
with (x₁, y₁ ) = A (- 1, 6) and (x₂, y₂ ) = B (5, 3)
AB =
=
=
=
=
≈ 6.71 ( to 3 significant figures )
first speed --- x mph
return speed -- x+16 mph
6/x + 6/(x+16) = 1
times each term by x(x+16)
6(x+16) + 6x = x(x+16)
x^2 + 4x - 96 = 0
(x-8)(x+12) = 0
x = 8 or x is a negative
her first speed was 8 mph
her return speed was 24 mph
check:
6/8 + 6/24 = 1 , that's good!