C
100 divided by 2 (boy and girl) is 50, then 4 goes into 100 25 times so a chance of being a girl in a family of 4 is 25% or .25
Answer: -120
Step-by-step explanation:
this would be the answer because if you take a positive and add it to a negative you get zero if their the additive inverse of the number.
The additive inverse of a complex z is a complex number

so that

Finding

If you're having problems understanding this answer, try seeing it through your browser: <span>
brainly.com/question/2159647</span>I hope this helps.
Tags: <em>complex number additive inverse opposite algebra</em>
Since you have y alone on one side of the equation......
Use substitution and plug in 1/2x-4 for y in the other equation.

Distribute

Combine like terms

Add 8 to both sides

Divide by 4
and 
Plug this value in for x

Simplify

Multiply everything by 8 and simplify

Divide.....

Your answers are:

Answer:
240
Step-by-step explanation:
20/0.25 = 80
80 x 3 = 240