Answer:
![\large \boxed{\mathrm{B. \ 84}}](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B%5Cmathrm%7BB.%20%5C%2084%7D%7D)
Step-by-step explanation:
bisects
and
.
![RU=UA](https://tex.z-dn.net/?f=RU%3DUA)
![3m+21=6m](https://tex.z-dn.net/?f=3m%2B21%3D6m)
Solve for m.
Subtract 3m from both sides.
![21=3m](https://tex.z-dn.net/?f=21%3D3m)
Divide both sides by 3.
![7=m](https://tex.z-dn.net/?f=7%3Dm)
Calculate
.
![RA=3m+21+6m](https://tex.z-dn.net/?f=RA%3D3m%2B21%2B6m)
![RA=9m+21](https://tex.z-dn.net/?f=RA%3D9m%2B21)
Put m = 7.
![RA=9(7)+21](https://tex.z-dn.net/?f=RA%3D9%287%29%2B21)
![RA=63+21](https://tex.z-dn.net/?f=RA%3D63%2B21)
![RA=84](https://tex.z-dn.net/?f=RA%3D84)
Answer:
128°
Step-by-step explanation:
x + 154° + 78° = 360° {being complete turn}
x + 232° = 360°
x = 360° - 232°
x = 128°
The given equation is: ![y+2x=5](https://tex.z-dn.net/?f=%20y%2B2x%3D5)
To find the line perpendicular to it, we interchange coefficients and switch the signs of one coefficient.
The equation to a line perpendicular to it is:
$ 2y-x=c$
where, $c$ is some constant we have determine using the condition given.
It passes through $(2,-1)$
Put the point in our equation:
$2(-1)-(2)=c$
$c=-2-2$
$c=-4$
The final equation is:
$\boxed{ 2y-x=-4}$
Answer:
The first blank is 20 and the second one is 1.25
Step-by-step explanation:
i just took the quiz