Answer:
20
Step-by-step explanation:
We have two simultaneous equations.
(1) y = 2x + 50
(2) y = 4.5x
1. Subtract (1) from (2)
0 = 2.5x - 50
2. Add 50 to each side
2.5x = 50
3. Divide each side by 2.5
x = 20
Pilar must sell 20 items to break even.
Answer:
Simple Interest: A = P(1+rt)
Step-by-step explanation:
P: the principal, the amount invested
A: the new balance
t: the time
r: the rate, (in decimal form)
Ex1: If $1000 is invested now with a simple interest of 8% per year. Find the new amount after two years.
P = $1000, t = 2 years, r = 0.08.
A = 1000(1+0.08(2)) = 1000(1.16) = 1160
One way to compare quantities is with fractional numbers that represent quantities using divided numbers.
<h3>What is a fraction?</h3>
Fractional number is a mathematical concept that refers to a quantity divided by another quantity. Common fractions are made up of: numerator, denominator and dividing line between them (horizontal or oblique bar).
- The denominator "b" expresses the number of equal parts that represent the unit.
- The numerator "a" indicates how many of them are taken.
Some examples of fractional numbers are:
Note: This question is incomplete because there is some information missing. However I can answer it based on my general prior knowledge.
Learn more about fractional numbers in: brainly.com/question/13398430
The answer is 80 because you add then subtract