Answer:
Speed = 8mph
Step-by-step explanation:
Speed of wind = 4mph
Let speed of Darrin with no wind be "x" mph
then resultant speed of Darrin, travelling in direction of wind = (x + 4) mph
Using a result, Time = Distance travelled / Net speed
Time taken by Darrin to travel 6miles in direction of wind = 6 / (x + 4)
When Darrin travel in opposite direction of wind, then its net speed = (x - 4)mph
Darrin travel 2 miles against the wind in 6/(x + 4) hr
then Distance = speed × time
2 = ( x- 4 ) × ( 6/x + 4)
2x + 8 = 6x - 24
4x = 32
x = 8 mph
Therefore speed of Darrin skateboard with no wind = 8mph
Answer:
Step-by-step explanation:
x= -5
Answer:
TeX, stylized within the system as TeX, is a typesetting system which was designed and written by Donald Knuth and first released in 1978. TeX is a popular means of typesetting complex mathematical formulae
Step-by-step explanation:
TeX, stylized within the system as TeX, is a typesetting system which was designed and written by Donald Knuth and first released in 1978. TeX is a popular means of typesetting complex mathematical formulae
S = 3+M
4(S + M) = 67
4(3+M + M) = 67
4(3+2M) = 67
12 + 8M = 67
8M = 55
M = 6 years 10 months 14 days @ 6.875 years
S = 3 + 6.875
S = 9 years 10 months 14 days
Given:
The figure of a triangle.
To find:
The category of the triangle.
Solution:
In the given triangle two angles are equal and their measure is 78 degrees. So, the measure of third angle is
(Angle sum property)
In the given triangle only two angles are equal in means their opposite sides are also equal.
We know that base angles of an isosceles triangle are equal. So, the triangle is isosceles.
All angles are less than 90 degree. So, the triangle is acute.
Therefore, the given triangle is an isosceles acute triangle and the correct option is B.
