Answer:
$3.50
Step-by-step explanation:
Given:
1 sharpener + 2 posters = $28.99
1 sharpener = $21.99
1 poster = ?
Solve:
1 sharpener + 2 posters = $28.99
$21.99 + 2 posters = $28.99
2 posters = $28.99 - $21.99
2 posters = $7
1 poster = $7/ 2 = $3.5
Answer:
The answer is -4/3 or -1 1/3
The teacher ordered the students in 24 ways.
We have given that the total number of students is 4.
4 students are assigned to give presentations.
We have to find the arrangement of the 4 students.
<h3>What is the arrangement?</h3>
An arrangement (or ordering) of a set of objects is called a permutation. (We can also arrange just part of the set of objects.)
In a permutation, the order that we arrange the objects n is important.
4 students can be arranged by 4! ways.

Therefore option 3 is correct.
The teacher ordered the students in 24 ways.
To learn more about the permutation visit:
brainly.com/question/12468032
#SPJ1
Answer:
Step-by-step explanation:
(-5)(-3) = 15
(-6)(-8)= 48
(48)(15)= 720
the sign is positive
two negatives = a positive
four negatives = a positive
0.00000297or 336700
hope this help