Its the first and third one or is there only one answer?
Step-by-step explanation:
Let the speed of the plane in still air = x
and speed of wind = y
Now from city A to B
dIstance = speed × time
732732 = (x - y) × 2 (1)
From city B to A
Distance = speed × time
732732 = (x + y) × 1.5 (2)
From (1) and (2)
2x - 2y = 1.5x + 1.5y
0.5x = 3.5y
x = 7y
If we plug in (1)
732732 = (7y - y) × 2
732732/12 = 12y/12
y = 61061
Since x = 7y
= 427427 miles/hr
Speed of still air plane is 427427 miles/hr
Speed of wind = 61061miles/hr
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Answer:
the answer is 5
Step-by-step explanation:
Answer:
x=3
Step-by-step explanation:
2x/3−x/10=17/10
Multiply each side by 30 to get rid of the fractions
30( 2x/3−x/10)=(17/10)*30
Distribute
20x -3x = 51
Combine like terms
17x = 51
Divide by 17
17x/17 = 51/17
x=3
The identities are:
If c^2 > a^2 + b^2 the triangle is an obtuse triangle
If c^2 < a^2 + b^2 then triangle is an acute triangle
If c^2 = a^2 + b^2 the triangle is a right triangle
The longest length always goes in for C.
A. 6^2 <,>,= 4^2 + 5^2
36 <,>,= 16 + 25
36 ____41 36< 41 acute
B. 19^2 <,>,= 5^2 + 13^2
361 <,>,= 25 + 169
361 ____194 361 > 194 obtuse
C. 25^2 <,>,= 12^2 + 14^2
625 <,>,= 144 + 196
625 <,>,= 340
625 ___ 340 625 > 340 obtuse
D. 75^2 <,>,= 21^2 + 72^2
5625 <,>,= 441 + 5184
5625 <,>,= 5625
5625 = 5625 right triangle
LETTER D