Answer:
therefore x = 600 mph
therefore the speed of the other plane y = x - 110 = 600 - 110 = 490 mph
Step-by-step explanation:
i) Two planes are 2725 miles apart and are travelling towards each other.
ii) One plane is travelling 110 mph faster than the other plane.
iii) the planes pass each other in 2.5 hours
iv) let the speed of one plane be x mph
v) let the speed of another plane be y mph
vi) therefore x - y = 110 mph
vii) and also x + y = 2725/2.5 = 1090
viii) adding the equation in vi) to the equation in vii) we get 2x = 1200
therefore x = 600 mph
ix) therefore the speed of the other plane y = x - 110 = 600 - 110 = 490 mph
The boats would be 7.62 mi apart
Answer:
4 and 8
Step-by-step explanation:
You don't need the surface area to find the edge length of a cube. Length of edge = ∛volume
Cube 1:
Length of each edge = ∛64 = 4 in.
Area of each face = 4² = 16 in².
Surface area = 6×16 = 96 in².
Cube 2:
Length of each edge = ∛512 = 8 in
Area of each face = 8² = 64 in²
Surface area = 6×64 = 384 in²
So the surface area is in the ratio 1:4
Answer:
See below.
Step-by-step explanation:
7) 10 x [(7² + 3) - 9]
= 10 x [52 - 9]
= 10 x 43
= 430
9) {[(66 / 11) + 3] x 2}
= [6 + 3] x 2
= 9 x 2
= 18
11) {[(18 - 3) + 3²] - 14} x 3
= {[24] - 14} x 3
= 10 x 3
= 30
It is B, 5.64 because A and D can't fit on the number line and C is just not it because that would be one tick mark before 5.7
