Answer:
5 and -1.
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
<u>Algebra I</u>
- Terms/Coefficients
- Solving systems of equations by substitution/elimination
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
Let <em>x</em> be one number and <em>y</em> be the other.
x + y = 4
x - y = 6
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Elimination</em>
- Combine 2 equations: 2x = 10
- [Division Property of Equality] Divide 2 on both sides: x = 5
<u>Step 3: Solve for </u><em><u>y</u></em>
- Substitute in <em>x </em>[1st Equation]: 5 + y = 4
- [Subtraction Property of Equality] Subtract 5 on both sides: y = -1
Answer:
550
Step-by-step explanation:
Rewrite in exponential form:
10^3=2x-100
Solve for x:
1000= 2x-100
2x=1100
x=550
If she cuts it then the angle would become a right angle so it sould be 90º
Answer:
What boxes....
Step-by-step explanation:
Step-by-step explanation:
In this problem, all we have to do is replace x and y with the values we've been given.
It can be helpful to think of 3x as 3 * x (which is the same exact thing), so I'll write it out that way.
3*x - 4*y
(replace)
3*4 - 4*3
(multiply (doing this step first because of PEMDAS))
12 - 12
(subtract)
0
Answer:
0