Answer:
80
Step-by-step explanation:
Initial ratio:
Teachers to students
1 : 15
Ratio after:
Teachers to students
3 : 40
The number of students did not change, so we can make the students of the initial ratio and the students of the ratio after the same.
1 : 15 = 8 : 120
3 : 40 = 9 : 120
120 units = 1200
1 unit =
Initial teachers = 8 units =
Answer: +7
Step-by-step explanation: Since a negative divided
by a negative always equals a positive, (-28) ÷ (-4) = +7
Answer:
<h2><u><em>
207.35</em></u></h2>
Step-by-step explanation:
Answer:
x = 10
Step-by-step explanation:
In the last step, you can see that the fraction has been multiplied by its reciprocal , making it cancel out. The reciprocal has been multiplied to both sides, so all you need to do is multiply · :
6 · 5 = 30
3 · 1 = 3
<u><em>So now you should have the fraction:</em></u>
x =
<u><em>But, you can still simplify the fraction by dividing 30 by 3:</em></u>
x = 10
A) Ang 1 + Ang 2 = 90
B) Ang 1 = Ang 2 + 20
B) Ang 1 -Ang 2 = 20 then adding this to equation A produces
2 Ang1= 110
Ang 1 = 55 degrees
Ang 2 =35 degrees