The quadratic formula is 

So the solution for k is 16.
Hope that helps!
Answer:
<h3><u>48 people</u> is the right answer.</h3>
Step-by-step explanation:
Let the number of male and female be 3x and 5x
There are twelve more females than males
According to the above problem,

Therefore, the numbers of male is

and number of female is

Hence, total number of people are

There are <u>48 people</u> in the party.
7. 55 + 35 + x = 180 x = 90 making the triangle a right triangle.
8. The room would be 11 inches by 8.5 inches. The scale factor is 1/2 : 1
Answer:
6
Step-by-step explanation:
Turn all fractions to improper fractions first.
2
× 2
=
×
Directly multiply. (numerators with numerators and denominators with denominators)
×
=
Simplify by turning improper fractions back into mixed numbers.
= 6