There are 10 students in a social studies class. three students will be selected to present their term projects today. in how many different orders can three students be selected? a. 120 b.720 c. 60 d. 1440 what is the theoretical probability of rolling a sum of 8 on one roll of two standard number cubes? a. 5/36 b.1/6 c. 1/9 d. 1/12

Step-by-step explanation:

Given that there are 10 students in a social studies class. three students will be selected to present their term projects today.

Since order does not matter,

3 students can be selected from 10 students in 10C3 ways

Option A is right

When a cube is rolled we have 36 outcomes

If total of 8 is desired, then favourable outcomes are

(2,6)(3,5)(4,4)(5,3)(6,2)

Hence theoretical probability =no of favourable outcomes/no of total outcomes

=

6.5

step-by-step explanation:

you said it was in the question

~courtney

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet