Number of students who secured first class in English only is 20
Step-by-step explanation:
- Step 1: Find the number of students who secured first class in English only.
Total number of students who secured first class in English or Maths, T = 80
Number of students who secured first class in Maths, M = 50
Number of students who secured first class in both English and Maths, EM = 10
⇒ Let the number of students who secured first class in English only be x.
Total students with first class, T = M + EM + x
⇒ 80 = 50 + 10 + x
⇒ 80 = 60 + x
∴ x = 80 - 60 = 20
Answer:
331
Step-by-step explanation:
Add 74 + 46 + 57 = 177
Add 9 + 36 = 45
Add 45 + 46 = 91
Answer: 1.05(0.85y)
Step-by-step explanation:
i think that is correct
The proof shows that x is equal to the sum of the interior adjacent angles
<h3>Sum of interior and exterior angle of a triangle</h3>
From the given triangle:
x + y = 180 (sum of angle on a straight line is 180 degrees)
Also, the sum of an interior angle of the triangle is 180 degrees, hence:
y + 50 + 70 = 180
Equate both expressions
x + y = y + 50 + 70
x + y - y = 50 + 70
x = 50 +70
This shows that x is equal to the sum of the interior adjacent angles
Learn more on exterior angles here: brainly.com/question/17972372
