Answer:
28.9
Step-by-step explanation:
Using cosine, we get the equation cos(21)=x/31. Solving cos(21), we get about 0.933. Then we multiply by 31 to get about 28.9.
Levi Ackerman I looked it up
Answer:
The coordinates of point B is (8,-4)
Step-by-step explanation:
Midpoint of a line segment: It is the point on the line segment that divides the segment in two congruent segments.
Since it is given that C is the midpoint of Line segment AB.
Mid-point of a segment of end points
and
is, C=
.
As, given the coordinates of A and C are (2,4) and (5,0)
then, we have
,
;
and 
to find the coordinates of
.

Simplify:

⇒ 
to solve for
we have, 
or
or
= -4
so, the values of
and 
Therefore, the coordinates of point B is (8,-4)
Answer:
x=−y+19
Step-by-step explanation:
(x+5)(2)+(y−3)(2)=42
Step 1: Add -2y to both sides.
2x+2y+4+−2y=42+−2y
2x+4=−2y+42
Step 2: Add -4 to both sides.
2x+4+−4=−2y+42+−4
2x=−2y+38
Step 3: Divide both sides by 2.
2x
2
=
−2y+38
2
x=−y+19
Answer:
instructions please
Step-by-step explanation: