Answer:
Subtract by 5 on both sides.
Step-by-step explanation:
x+5 = -10. if you subtract both sides by 5, you will get x+5-5=-10-5, which can be simplified to x=-15.
4x + 1 = 90 degrees
4x = 89
x = 22.25
Answer:
b= (2a+11)/5
Step-by-step explanation:
5x + 2y = 9
2y=9-5x
y= 9/2 - 5x/2
slope, m1= -5/2
for perpendicularity, m1 × m2 = -1
slope for QR= m2=
![= - 1 \div \frac{ - 5}{2} = - 1 \times \frac{2}{ - 5} = \frac{ - 2}{ - 5} = \frac{2}{5}](https://tex.z-dn.net/?f=%20%3D%20%20-%201%20%20%5Cdiv%20%20%5Cfrac%7B%20-%205%7D%7B2%7D%20%20%3D%20%20-%201%20%5Ctimes%20%20%5Cfrac%7B2%7D%7B%20-%205%7D%20%20%3D%20%20%5Cfrac%7B%20-%202%7D%7B%20-%205%7D%20%20%3D%20%20%5Cfrac%7B2%7D%7B5%7D%20)
m2 is 2/5
![qr = \frac{b - 3}{a - 2}](https://tex.z-dn.net/?f=qr%20%3D%20%20%5Cfrac%7Bb%20-%203%7D%7Ba%20-%202%7D%20)
![\frac{2}{5} = \frac{b - 3}{a - 2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B5%7D%20%3D%20%20%5Cfrac%7Bb%20-%203%7D%7Ba%20-%202%7D%20)
5(b-3)=2(a-2)
5b-15=2a-4
5b=2a-4+15
5b= 2a+11
![b = \frac{2a + 11}{5}](https://tex.z-dn.net/?f=b%20%3D%20%20%5Cfrac%7B2a%20%2B%2011%7D%7B5%7D%20)
The answer is B) 26 because it would have to add up to 90