Answer:
z = -9
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Algebra I</u>
- Terms/Coefficients/Degrees
Step-by-step explanation:
<u>Step 1: Define</u>
-21 = z - (-6 - 2z)
<u>Step 2: Solve for </u><u><em>z</em></u>
- Distribute negative: -21 = z + 6 + 2z
- Combine like terms: -21 = 3z + 6
- Isolate <em>z</em> term: -27 = 3z
- Isolate <em>z</em>: -9 = z
- Rewrite: z = -9
To do this problem, we could set up an equation by putting 15% into a decimal.
90 coins * 0.15 = amount of coins sold
13.5=amount of coins sold
You sold 13.5 coins.
Answer:
z+z
Step-by-step explanation:
Answer:
3, -5
Step-by-step explanation: took the test
The basketball player attempted to do 15 baskets.
He made 9 of these baskets.
You must write a ratio that says:
attempted baskets:baskets made
Since he attempted 15 baskets and made 9 baskets, the answer would be:
15:9