Answer:

Step-by-step explanation:
Let x = calories in chocolate bar
¼x = ¼ of the calories
¼x – 10 = 10 calories less than half the calories
¼x – 10 = 70
¼x = 80
x = 320
There are
calories in the chocolate bar.
Step-by-step explanation:
in an equlateral triangle all sides are equal so one side would be
99/3= 33
Answer:
192
Step-by-step explanation:
Its nothing complicated just add their scores together.
Answer:
<em>Correct choice: B</em>
Step-by-step explanation:
<u>System of non-linear equations</u>
It's given the following system of equations:


We'll use the substitution method. Substituting y from the first equation into the second equation, we have:

Moving all terms to the left side:

Simplifying:

Factoring:

There are two solutions:
x=-4, x=2
The first solution gives a value for y:
y=-4+13=9
First solution: (-4,9)
The second solution gives a value for y:
y=2+13=15
Second solution: (2,15)
Correct choice: B