Number of students failed test are 6.
Any number or ratio that can be expressed as a fraction of 100 is percentage.
Given
number of students = 24
percentage of students failed = 25
no. of students failed the test = 25% of total number of students
=25% of 24
= × 24
=6
Hence, the number of students who failed in exam are 6.
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Answer:
Step-by-step explanation:
3.2 × 6.892 = 22.0544
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Answer:
A= 57° , a= 7.79 and c = 14.30
Step-by-step explanation:
In a given right triangle,
We have, b =12 ,B =33° and C =90°
We can find Angle A.
Angle sum property of triangle:
i.e A + B + C = 180°
A + 33° + 90° = 180°
A = 57°
Next, by using trigonometry
tanB = Perpendicular /Base = a /b
Here B =33° , a = ? , b = 12
So, tan 33° = a/12
0.6494 = a/12
a = 7.79
So we got a and b. By using Pythagoras theorem we determine c.
c^2 = a^2 + b^2
c^2 = 7.79^2 + 12^2
c = √(2046841) = 14.30