The correct answr is 24 3/4 just took the test
Answer:
C. 40.2°
Step-by-step explanation:
Cosine rule (real handy to remember): c² = a² + b² - 2·a·b·cos(γ)
If you don't know this yet, look it up but in short: c, a and b are the lengths of the sides of the triangle, the angle opposite side a is called α, for b it is β and for c it is γ. That's the convention I've always used anyway, you can call them whatever of course. Anyhow:
c² = a² + b² - 2·a·b·cos(γ)
⇒ |AC|² = |AB|²+|BC|²-2·|AB|·|BC|·cos(∠B)
⇒ |AC|²-|AB|²-|BC|² = -2·|AB|·|BC|·cos(∠B)
⇒ ( |AC|²-|AB|²-|BC|² ) / ( -2·|AB|·|BC| ) = cos(∠B)
⇒ ∠B = arccos( ( |AC|²-|AB|²-|BC|² ) / ( -2·|AB|·|BC| ) )
= arccos( ( 11²-16²-16² ) / ( -2·16·16 ) )
= 40.21101958°
≈ 40.2°
Answer:

Step-by-step explanation:
step 1
Find the slope of line L
we know that
If two lines are perpendicular, then their slopes are opposite reciprocal
In this problem we have

Isolate the variable y

The slope of the given line is

so
The slope of the Line L is

step 2
Find the x-intercept of the line

The x-intercept is the value of x when the value of y is equal to zero
so
For y=0

The x-intercept is the point (5/2,0)
step 3
Find the equation of the line L
Find the equation of the line in point slope form

we have

substitute


Convert to standard form
AX +By+C
where
A is a positive integer
B and C are integers
Multiply both sides by 4

Answer:
.09
Step-by-step explanation:
It is this because if you divide 9 by 100 it will equal .09.