Answer:
18
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>
<em>Identify</em>
<em>b</em> = 3
<em>y</em> = -3
5b - y
<u>Step 2: Evaluate</u>
- Substitute in variables: 5(3) - -3
- Multiply: 15 - - 3
- Subtract: 18
An algebraic expression that represent the worded expression would be (x is representing the unknown number) 3x-4, since the worded expression asks for "four less than three times a number" meaning you subtract 4 from the product of 3 and the unknown number.
Answer:
5.4 numbers of purple beads and 12.6 numbers of silver beads.
Step-by-step explanation:
Arlene makes a necklace using 14 purple beads for every 6 silver beads. So, she uses purple and silver beads in the ratio 14 : 6 = 7 : 3.
Now, the necklace contains 18 beads, then in the ratio 7 : 3, there will be numbers of purple beads and (18 - 5.4) = 12.6 numbers of silver beads. (Answer)
Answer:
1, 3
.4, 0
3, 12
Step-by-step explanation: