It’s very easy lol it’s B
Answer:
C.
Step-by-step explanation:
Answer:
a) 24 teachers
b) 942.86 $
c) 1650 $
Step-by-step explanation:
The school has 1120 students, if the ratio teacher-pupil is 1:35 means, that for each group of 35 students you have one teacher, and at the same time means that the school has 32 teachers.
If the school is going to reduce the mentioned ratio to 1:20 then, it is neccessary to hire:
1120 /20 = 56 this will be the total number of teachers to get ratio of 1:20
but the school already has 32 so they need to contract 56 - 32 = 24 new teachers
Finally if each teacher cost 33000 $/per year, and there are 32 teachers the total costs associate to teachers is :
32 * 33000 = 1056000 $ / per year and the money spend por pupil per year will be
1056000/ 1120 = 942.86
c) With ratio 1:20
56 * 33000 = 1848000 $
And the cost per pupil per year become
1848000 / 1120 = 1650
Answer:
- Long leg = 10√3
- Short leg = 10
- Hypotenuse = 20
Step-by-step explanation:
<u>Concept: </u>
Here, we need to know the idea of a special triangle 30-60-90.
A special right triangle is a right triangle with some regular feature that makes calculations on the triangle easier, or for which simple formulas exist.
The ratio between the corresponding side of each angle is 1 : √3 : 2
If you are still confused, please refer to the attachment below for a graphical explanation.
<u>Solve:</u>
30-60-90 ⇔ 1 : √3 : 2
Given the side corresponding to 90° is 20
30° : 90° = 1 : 2
30° : 20 = 1 : 2
30° = 10
30° : 60° = 1 : √3
10 : 60° = 1 : √3
60° = 10√3
Hope this helps!! :)
Please let me know if you have any questions
I don't know how to upload a picture but I can tell you what to write
Start off with a writing the problem then you have to divide two from both sides
1) 2x=8
/2 /2
Once you divide two from both sides x is alone so you were left with X=4 which gives you the answer
2) x = 4