Answer:
D = 1st / C = 2nd / A = 3rd / B = 4th
Step-by-step explanation:
Solution
The counselor has 12 electives courses (e.g. art, band, PE, etc.) to choose from and must select 2 ordered classes for each 6th grade student.
Let S be the sample space.
Then, n(S) = 12C2 = (12 x 11) ÷ (2 x 1 ) = 132 ÷ 2 = 66
![Then, n(S) = 12C2 = (12 x 11) ÷ (2 x 1 ) = 132 ÷ 2 = 66](https://tex.z-dn.net/?f=Then%2C%20n%28S%29%20%3D%2012C2%20%3D%20%2812%20x%2011%29%20%C3%B7%20%282%20x%201%20%29%20%3D%20%20132%20%C3%B7%202%20%3D%20%2066)
Sixty six (66) ways can the counselor arrange the last 2 periods of the day for the 6th grade students
Answer:
600 square centimeter.
Step-by-step explanation:
A cube-shaped satellite has side lengths of 10 centimeters.
So, the total surface area of the satellite is 2(10 × 10 + 10 × 10 + 10 × 10) = 600 sq. cm.
{The total surface area of a cuboid having length L, width W, and height H is given by 2(LW + WH + HL)}
Therefore, the least amount of aluminum needed to cover the satellite will be 600 sq. cm. (Answer)
20% or 2 cm 1 dm = 10 cm.