The answer for your question is 2 × s × t × t.
Answer:
Step-by-step explanation:
In a word where no letters are repeated, such as FRANCE, the number of distinguishable ways of arranging the letters could be calculated by 5!, which gives 120. However, when letters are repeated, you must use the formula
n
!
(
n
1
!
)
(
n
2
!
)
...
Explanation:
There are 4 s's, 3 a's and a total of 9 letters.
9
!
(
4
!
)
(
3
!
)
=
362880
24
×
6
= 2520
There are 2520 distinguishable ways of arranging the letters.
Practice exercises:
Find the number of distinguishable ways of arranging the letters in the word EXERCISES.
Find the number of distinguishable ways of arranging letters in the word AARDVARK.
I can’t help but you did just help me get an answer correct
the answer its 120 hope helps you
Answer:
90°
Step-by-step explanation:
Two lines intersect each other at a right angle, making them perpendicular. Thus, the resulting angles will all be 90°, making ∠4 = 90°.
Alternatively, we can use the supplementary angles equation.
Let's call the right angle marked in the picture ∠5.
∠4 + ∠5 = 180°, since the line is also a straight angle which measures 180°.
∠4 + 90° = 180°
∠4 = 90°
Either way, ∠4 = 90°
Hope this helps!