An ordered pair (x,y) is a solution to a system of equations if it makes all the equations true.
Let's check whether (–1, 5) makes the equations true.
Plugging –1 in the first equation for x and 5 in for y, we get
–1 + 5 = 4: TRUE
Plugging –1 in the second equation for x and 5 in for y, we get
–1 – 5 = –6: TRUE
Since it makes both the equations true, it's a solution to the system of equations. So the answer choice is D, the 4th one.
Answer:
wow thats a lot let me write this down
We will just need to multiply the fl oz by 8. ---- > 8*.035 = 0.28 fl oz
Answer:
A. 6
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
4² - (x + 8)
x = 2
<u>Step 2: Simplify</u>
- Evaluate exponents: 16 - (x + 8)
- Distribute negative: 16 - x - 8
- Combine like terms: 8 - x
<u>Step 3: Evaluate</u>
- Substitute in <em>x</em>: 8 - 2
- Subtract: 6
