Let's draw a diagram of this room so it's easier to solve. (see the image I've included)
The perimeter is the length of all of the sides of the rectangle, so
8 + 8 + x + x = 40
Simplify
16 + 2x = 40
Subtract 16 from both sides
2x = 24
Divide by 2 on both sides
x = 12
The length of the rectangle is
12.
Hopefully this helps! If you don't understand or have more questions, feel free to DM me!! :)
Answer: C, 3 HOURS
Step-by-step explanation:
she canoed for 1 hour and windsurfed for 2 hours
Answer:
Option 3
Step-by-step explanation:
The student first made an error in step 2 when she simplified... She should have used the distributive property to distribute the -4 through the parentheses. It should look like this...
-4 (y) = -4 (4 - 2z)
-4y = -16 + 8z
Angle E = 180 -45 -63 = 72 degrees
Using the Law of Sines
FD / sine (E) = ED / sine (63)
3.8 / 0.95106 = ED / 0.89101
side DE = 3.8 * .89101 / .95106
side DE =
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3.5600677139
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Source:
http://www.1728.org/trigtut2.htm