Step-by-step explanation:
a)
8÷2=4
12÷3=4
27÷9=3
•it does'nt always take the same amount of time to serve each customer .
•10×3=30
b)
according to the question
2=18 point
4=36 point
8=72 point
18=9×2
36=9×4
72=9×8
so 1dollar =9point
•each dollar spent appears to earn the same number of point
•because 81=9×9, it costs 9 dollar
Answer: 36 / 2 1/4
Step-by-step explanation:
From the question, we are informed that Jared needs to drill holes 2 1/4 inches apart in a 36 inch section of his garage. The expression that he can use to figure out the number of holes he will need to drill will be:
= 36 ÷ 2 1/4
From the expression we can then calculate the number of hours to drill. This will be:
= 36 / 2 1/4
= 36 / 9/4
= 36 × 4/9
= 16
He'll need to drill 16 holes
Answer:
a ≈ 6.5 cm
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>Geometry</u>
Volume of a Cube Formula: V = a³
- <em>a</em> is a side length
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
<em>V</em> = 270 cm³
<u>Step 2: Solve for </u><em><u>a</u></em>
- Substitute in variables [Volume of a Cube Formula]: 270 cm³ = a³
- [Equality Property] Cube root both sides: 6.4633 cm = a
- Rewrite: a = 6.4633 cm
- Round: a ≈ 6.5 cm
Answer:
80% Confidence interval: (0.4603,0.7397)
Step-by-step explanation:
We are given the following in the question:
Sample mean, 
= MD = 0.60 points
Sample size, n = 9
Sample variance = 0.09
Sample standard Deviation =
80% Confidence interval:
Putting the values, we get,
Answer:
the difference between a number and five is negative fieles a number is equal to two
Step-by-step explanation:
n-5=-2
n=-2+5
=3
