In a class of 39 student , 25 offer Fante and 19 offer Twi. five student do not offer any of the two languages.
1 answer:
The Venn diagram is given below. Then the number of students who offer only Twi will be 9.
<h3>What are Sets?</h3>Sets are groups of clearly specified components. The number of items in a finite set is denoted by a curly bracket.
In a class of 39 students, 25 offer Fante and 19 offer Twi.
Five students do not offer any of the two languages.
The Venn diagram is given below.
The number of students who offer both Fante and Twi will be
⇒ 25 + 19 - (39 - 5)
⇒ 44 - 34
⇒ 10
Then the number of students who offer only Twi will be
⇒ 19 - 10
⇒ 9
More about the sets link is given below.
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Answer:
x ≈ 1.32, x ≈ - 5.32
Step-by-step explanation:
Given
x² + 4x - 7 = 0 ( add 7 to both sides )
x² + 4x = 7
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(2)x + 4 = 7 + 4
(x + 2)² = 11 ( take the square root of both sides )
x + 2 = ± ( subtract 2 from both sides )
x = - 2 ±
Thus
x = - 2 - ≈ - 5.32 ( to 2 dec. places )
x = - 2 + ≈ 1.32 ( to 2 dec. places )