Turn this into an expression. The height of a kiwi is (k).
78=15+3k
Minus 15.
63=3k
Divide by 3.
21=k
A kiwi is 21 inches tall.
Answer:
(-3/2, -11/2)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Equality Properties
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
y = x - 4
y = 4x + 2
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
- Substitute in <em>y</em>: x - 4 = 4x + 2
- Isolate <em>x </em>terms: -4 = 4x + 2
- Isolate <em>x</em> term: -6 = 4x
- Isolate <em>x</em>: -3/2 = x
- Rewrite: x = -3/2
<u>Step 3: Solve for </u><em><u>y</u></em>
- Define equation: y = x - 4
- Substitute in <em>x</em>: y = -3/2 - 4
- Subtract: y = -11/2