B. 70 feet
C. 20 feet
D. 50 feet
Answer:
The correct option is C. 50 feet.
Therefore the girl is 50 feet away from the tree.
Step-by-step explanation:
Consider a Right angle Triangle
Elevation to the tree is ' θ '
Adjacent Side to θ = distance from the tree to girl = distance
Opposite Side to θ = height of the tree = height
To Find:
distance from the tree to girl = distance
Solution:
In Right angle Triangle Tangent Identity
Substituting we get
........Given
Comparing the given equation with the above we get
Therefore the girl is 50 feet away from the tree.
Have the first number be x and the other number be y.
Write the first equation: The sum is 38:
x+y=38
Then the second equation: x is 5 more than than 2y:
x=2y+5
Take the first equation and make it y=38-x
Then substitute it in for the 2nd equation to find x:
x=2(38-x)+5
x=76-2x+5
3x=81
x=27
Then substitute that into the 1st equation to find y:
(27)+y=38
y=11
The first number (x) is greater than the second number (y) because 27 is greater than 11
THE ANSWER IS 37 BUT HOW DO U SOLVE IT