Answer:
and 
the mistake was in calculating 
let's solve first.
Step-by-step explanation:
if 
, substitute the 
in the equation
as
solve the equation in parentheses :
multiply 
by 
it will equal to: 
now we want to let all unknown digits alone, so we will take 
to the other side with a different sign it will be as:
now we will solve it:
at this part, the given equation was wrong in the paper.
we don't want the digit to be negative so we will do it like this:
now that we found 
we will substitute it to find 
:
overall the mistake was in calculating instead of putting
he/she put a different sign in front of the digit like :
so when he/she flipped 
it became positive and instead of subtracting he/she added it.
The distance from the wall was the bullet fired if the gun was held 1.1 m above the floor will be 4.25 meters.
<h3>What is trigonometry?</h3>
Trigonometric functions examine the interaction between the dimensions and angles of a triangular form.
A projectile is tracked down and implanted in the mass of a room 2.2 m over the floor. The shot entered the wall going vertically at a point of 15°.
Because the gaps are so low and the bullet's speed is so high, we may treat the bullet's route as a straight line.
The distance is given as,
⇒ (2.2 - 1.1) / sin 15°
⇒ 1.1 / sin 15°
⇒ 4.25 meters
The distance from the wall was the bullet fired if the gun was held 1.1 m above the floor will be 4.25 meters.
More about the trigonometry link is given below.
brainly.com/question/22698523
#SPJ1
Answer:
-2x - 1
Step-by-step explanation:
6 - 6x - 2 + 4x - 5
6 - 2x - 2 - 5
-2x - 1
Answer:
83°
Step-by-step explanation:
We khow that the sum of a triangle's angle is 180°
- x is unkhown
- an angle with 43° and another unkhown one
We should calculate the first one wich is given by : 180-126= 54
now finally :
=83°
