Answer:
20.
m = -52
22.
x=13
24.
a=-90
26.
n=-2
28.
a=9
30.
m=-10
Step-by-step explanation:
20. m/4=-13
m = -13*4 = -52
22. -143=-11x
x=-143/-11 =13
24. -5=a/18
a=-5*18= -90
26. n-8=-10
n=--10+8
n=-2
28. a+11=20
a=20-11
a=9
30. 18+m=8
m=8-18
m=-10
question 4: the answer is 1/2
question 5: the answer is 58/79
Answer:
D
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
y - 3 = 4(x - 10) ← is in point- slope form
with slope m = 4
Given a line with slope m then the slope of a line perpendicular to it is
= -
= - 
The perpendicular line passes through (- 3, 7), hence
y - 7 = -
(x - (- 3)), that is
y - 7 = -
(x + 3) → D
The correct answer is C, 6/7
6^2= 36
3 times 6 = 18
36+18-3 =
Answer is 51
I hope this is correct :)