H=3.7
Then 0.8+h=0.8+3.7
=4.5
Answer: it takes 5s for each plane to travel their respective distances
Step-by-step explanation:
Let a = speed of plane A
Let b = speed of plane B
b = 55 + a
Time for plane A to fly 4000 miles
= 4000/a
Time for plane B to fly 4275 miles
= 4275/b
Since it takes same amount of time
4000/a = 4275/b
4000b = 4275a-------1
Put b = 55+a in eqn
4000(55+a) = 4275a
220000+4000a = 4275a
275a = 220000
a = 800
b = 55 +800 = 855
Time for plane A to fly 4000 miles
= 4000/800 = 5s
Time for plane B to fly 4275 miles
= 4275/855= 5s
Answer:
189 sq mm
Step-by-step explanation:
area = (21×18)/2 = 189 sq mm
Answer:
The needed line equation is : x + y + 2 = 0
Step-by-step explanation:
The slope m of the given line equation = -1
The points through which the line passes is (1,-3).
Now,as we know:
The POINT SLOPE form of the equation with point (x0,y0) is given as:
y - y0 = m (x-x0)
So, the equation if line q=with m = -1 and (x0,y0) = (1,-3) is given as
y - (-3) = -1( x - 1)
or, y + 3 = 1 -x
or, x + y + 2 = 0
Hence, the needed line equation is : x + y + 2 = 0