-54 i believe
Explanation: used calculator
Answer:
<h2>231cm²</h2>
Step-by-step explanation:
First, let's find the surface area of both the triangles
5x3=15
So, the surface area of the triangles is 15 sq.cm
Now, let's find the surface area of the base (large rectangle in the middle)
12x8=?
10x8=80
2x8=16
80+16=96
12x8=96
So, the surface area of the base, is 96sq.cm
Now, let's find the surface area of both of the side rectangles
12x5=60
60x2=120
So, the surface area of the two side rectangles is 120sq.cm
Now, let's find the total surface area by adding all of our answers.
120+96=216
216+15=231
<h2>
So hence, the surface area of this net is 231cm²</h2>
9514 1404 393
Answer:
11 1/9%
Step-by-step explanation:
1/9 × 100% = (100/9)% = (11 1/9)%
Answer:
%
Step-by-step explanation:
Given: Jocelyn calculates that see will take 105 minutes to run 7 miles. She runs the distance in 84 minutes.
To find: Jillian’s percent error
Solution:
Actual time taken by Jocelyn to run 7 miles = 84 minutes
Approximate time taken by Jocelyn to run 7 miles = 105 minutes
Error = 
minutes
Percent error = error/(Actual time taken) × (100) = 
If there are 21 teachers then the number of students is 14 students.
The ratio of students to teachers is 2:3 respectively. If there are 21 teachers, the number of students can be calculated by using unitary method or by proportions.
Using unitary method
It means for every 2 students there are 3 teacher's
For 3 teacher there are 2 students
for 1 teacher there are 2/3 students
for 21 teacher there are 21(2/3) students = 14 students.
By using proportions
Number of students/ number of teacher = 2/3
Number of students / 21 = 2/3
Number of students = 21x 2/3 = 14
So, there 14 students for 21 teachers.
Therefore, if there are 21 teachers then the number of students is 14 students.
To learn more about ratio refer here
brainly.com/question/2914376
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