Answer:
r = -29/20 or r = -1.45
Step-by-step explanation:
I believe you are saying that the equation is -2 1/4 = r - 4/5. If so, then I would solve it in this way:
-2 1/4 = r - 4/5
-9/4 = r - 4/5
-9/4 (20) = r (20) - 4/5 (20)
-45 = 20r - 16
20r = -29
r = -29/20
r = -1.45
Check:
-2.25 = r - 0.8
-2.25 = -1.45 - 0.8
-2.25 = -2.25
-9/4 = -9/4
x = 68°
Explanation:
We can find x by:
x + 90° + 22° = 180°
x + 112° = 180°
x = 180°- 112°
Volume is 150 cu.m
volume of cuboid = length × breadth × height
= 10 × 5× 3
= 150 cu.m
Not enough context...
