How many different pairs of parallel edges are there on a rectangular solid?
1 answer:
Answer:
18
Step-by-step explanation:
A rectangular prism has four parallel edges along its length, four parallel edges along its width, and four parallel edges along its height.
We want to know how many different pairs of parallel edges there are. Starting with the length, the number of unique pairs is:
₄C₂ = 6
The same is true for the width and height. So the total number of different pairs of parallel edges is:
3 × 6 = 18
You might be interested in
Answer:
so if 10 times 10 is 100 <em><u>your</u></em> <em><u> </u></em> <em><u>answer</u></em> <em><u> </u></em> <em><u>should</u></em> <em><u> </u></em> <em><u>be</u></em> <em><u> </u></em> <em><u>1</u></em> <em><u>0</u></em> <em><u> </u></em> <em><u>to</u></em> <em><u> </u></em> <em><u>the</u></em> <em><u> </u></em> <em><u>2</u></em> <em><u>n</u></em> <em><u>d</u></em> <em><u> </u></em> <em><u>power</u></em> <em><u> </u></em> <em><u> </u></em> <em><u> </u></em> <em><u>(</u></em> <em><u> </u></em> <em><u>the</u></em> <em><u> </u></em> <em><u>2</u></em> <em><u>n</u></em> <em><u>d</u></em> <em><u> </u></em> <em><u>power</u></em> <em><u> </u></em> <em><u>is</u></em> <em><u> </u></em> <em><u>the</u></em> <em><u> </u></em> <em><u>little</u></em> <em><u> </u></em> <em><u>number</u></em> <em><u> </u></em> <em><u>that</u></em> <em><u> </u></em> <em><u>goes</u></em> <em><u> </u></em> <em><u>on</u></em> <em><u> </u></em> <em><u>the</u></em> <em><u> </u></em> <em><u>top</u></em> <em><u> </u></em> <em><u>right</u></em> <em><u> </u></em> <em><u>of</u></em> <em><u> </u></em> <em><u>1</u></em> <em><u>0</u></em> <em><u>)</u></em>
If the first one is a = 180 - b, and not 180 - 6, then that is correct.
Answer:
3(x-1)(x+8)
Step-by-step explanation:
3x2+21x−24
3x2+21x−24
=3(x−1)(x+8)
Answer:
(-b-81)/6=a
Step-by-step explanation:
3b−2a-17 = 4a+4b+64
3b-4b-17-64=4a+2a
-b-81=6a
(-b-81)/6=a
First, we see the closest multiple of 7 under 100 is 98 and that divided by 7 is 14. there are 2/7 as our remainder. We do 2/7 times 160 to get 320/7 and 320/7 = 45 and 5/7. We convert 5/7 into a decimal like 5/7 = .7. The answer is 45.7 milligrams of sodium .
