What is the simplified value of $\frac{10! + 11! + 12!}{10! + 11!}$?

12

Step-by-step explanation:

We can factor out 10! on the numerator and the denominator,.

This gives: 10! (1 + 11 + (11 * 12)) / 10! (1 + 11)

This is because 10! * 11 is equal to 11! meaning we can factor out 10!.

10! * 11 * 12 also equals 12! which is why we can factor 10! out of that too.

Seeing as 10! is at the top and bottom we can cancel those out.

This leaves us with: 144 / 12 which is equal to 12.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)