Which expressions are equivalent to (4⋅a)⋅2 ?
1 answer:
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Answer:
The value of x for the given expression is
Step-by-step explanation:
Given as :
The expression is
=
Now,
∵ = 32
And = 8
So, =
Or, =
<u>Here , on both side base is 2 , so we remove common base 2</u>
∴ Equation can be written as
15 x + 25 = 3 x - 3
Or, 15 x - 3 x = - 25 - 3
Or, 12 x = - 28
∴ x =
So, The value of x =
Hence, The value of x for the given expression is Answer
Answer:
171 foot
Step-by-step explanation:
We are given that
Height of tower=135 ft
AC=55 ft
Let x be the length of shortest length of wire.
The angle of inclination of mountain with horizontal =
The angle between sides AB and BC=
Exterior angle is equal to sum interior angles of a triangle on the opposite sides .
We have to find the value of x.
We know that law of cosine
Substitute the values in the given formula we get
Hence, the length of wire needed=171 foot
