Answer: 384
There are 384 smoke free rooms.
Answer: 159%
Step-by-step explanation: all of the first square is shaded, which is obviously 100%, 59 out of 100 is shaded in the second one which means it is 159%
Answer:

Step-by-step explanation:
from the pythagorean theorem:

Answer:
Step-by-step explanation:
Givens
DTBC is a rhombus
<RTB = <FCB
Find
RD = DF
Solution
- <RTB = <FCB Given
- TD = DC Property of a Rhombus (all four sides are equal)
- <RDT = <FDC Vertically opposite angles are equal
- ΔRDT ≅ ΔFDC Δ = triangle. The Δs are congruent by ASA.
- RD = DF Parts of congruent triangles are congruent.
You will get problems like the way you were trying to do it. But you should just mark out what you know. I think that you might have forgotten about vertically opposite angles.
Well, to add and subtract unlike fractions, you need to look at both fractions and look at their denominators. next, you need to find the LCD, or the least common denominator. for example : 1/3 + 3/5. what is the least common multiple of 3 and 5? its 15 . and after that , you multiply the top the same amount you multiplied the bottom by, example con. : 1/3 x 5/5= 5/15 and 3/5 x 3/3 = 9/15. then you add the products , 5/15 + 9/15 and you get 14/15.