Answer:
46.95 in.²
Step-by-step explanation:
Surface area of the kaleidoscope = surface area of a triangular prism = 2(BA) + P*H
Base area (B) = 2(½*bh) = 2(½*1.5*1.3) = 1.95 in.²
Perimeter of base (P) = 1.5 + 1.5 + 1.5 = 4.5 in.
Height of prism (H) = 10 in.
Plug in the values
Surface area = 1.95 + 4.5*10 = 46.95 in.²
Count change of signs to tell positive roots
then replace x with -x and evaluate, then count change in sign for negative roots
initially
+, -, -, +, +, -
3 changes
3 or 1 positive roots
replacing x with -x
-,-,+,+,-,-
2 changes
2 or 0 negative roots
B is answer
Add all of the hours together than divide by 5 should get 40
Answer:
5 > k
Step-by-step explanation:
-45 < -9k
Switch sides
-9k > -45
Multiply both sides by -1 (reverse the inequality)
( -9k )( -1 ) < ( -45 )( -1 )
Simplify
9k < 45
Divide both sides by 9
9k/9 < 45/9
Simplify
K < 5
Is there a picture to show it?
