Answer:
HELP PLEASE
In this unit, you've learned about trigonometry and its applications to right triangles and real-world scenarios that can be modeled
with right triangles. In such scenarios, sometimes we refer to an angle of elevation or depression. Both types of angles have one side
that is horizontal. From this side, the angle may open up (angle of elevation) or open down (angle of depression). These images show
the difference between the two.
angle of depression
angle of elevation
In this task, you'll apply what you've learned to answer questions about a skateboard ramp that you and your friends are building for
your community skate park. The ramp will lead up to a platform. You'll be using a piece of wood that's 3.5 meters long for the ramp,
and the ramp's angle of elevation will be 28°. Use this figure as a model to answer the questions that follow.
B
platform
ramp
28°
A
C
Part A
3/4 is greater than 1/3
4 x 3 = 12 ( so we shall choose 12 as our new denominator)
1/3 = 4/12 ( multiply 4 top and bottom to get the same denominator)
3/4 = 9/12 ( multiply 3 top and bottom to get the same denominator)
3/4 is greater than 1/3 by 5/12
hope this helps
Answer: x =9
Step-by-step explanation:
These are corresponding angles, meaning they are equal. (the same angle). Set them equal to each other to solve. 13x+ 3 = 12x +12. Subtract 3 from both sides. 13x = 12x + 9. Subtract 12x from both sides. X = 9
Seems to be an arythmetic sequence
Sn=[n(a1+an)]/2
where
Sn means sum of all terms up the nth term
n=number of terms
a1=first term
an=nth term
so from 86 to the 22th term is from a1 to a22
find teh sequence
miknus 7 each time
an=a1+d(n-1)
an=87-7(n-1)
find 22n term
a22=87-7(22-1)
a22=87-7(21)
a22=87-147
a22=-60
S22=[22(87-60)]/2
S22=[22(27)]/2
S22=594/2
S22=297
the sum is 297
