Answer:
8/17
Step-by-step explanation:
total students = 34
no of girls = 16
no of boys = 18
probability to choose a girl to answer the question = no of girls/total students
=16/34
=8/17
Answer: 3(a+5)
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
12
Since the denominators are like, add the numerators leaving the denominator
=
=
15
We require the denominators to be like before we can add.
factor x² - 4 as a difference of squares
x² - 4 = (x + 2)(x - 2)
Expressing as
+
multiply the numerator/denominator of the first fraction by (x - 2)
= +
Expand and simplify the numerators, leaving the denominator
=
=
I guess the equation would be y^2 = 4(x-2)