If the first chapter of a certain book is 28 pages long and makes up 4% of the book, how many pages does the entire book have?
1 answer:
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Answer:
The total change in water level over the past 2 years is .
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
- Left to Right
Fractions
- Proper and Improper
Numbers
- Least Common Multiple (LCM)
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
Year 1 water change:
Year 2 water change:
<u>Step 2: Find Total Water Change</u>
- [Set up] Add yearly water changes:
- [Fractions] Convert to improper:
- [Fraction] Rewrite [LCM]:
- [Order of Operations] Subtract:
- [Fraction] Convert to proper:
Answer:
<h2>i) 3</h2><h2>ii) 5</h2>Step-by-step explanation:
Let H be the set of students who play Hokey
V be the set of students who play Volleyball
S be the set of students who play Soccer
======================================
card(volleyball only) = card(V) - [card(V∩H∩S) + card(V∩H only) + card(V∩S only)]
= 73 - [50 + (58-50) + (62-50)]
= 73 - [50 + 8 + 12]
= 73 - 70
= 3
………………………………………………
Card(Hokey only) = 100 - [3 + 8 + 50 + 10 + 12 + 12]
= 100 - 95
= 5
…………………
<u><em>Note</em></u> :
A Venn diagram might be helpful in such case.
Hi,
Work:
Equation;
Collect like terms and calculate sum of positive numbers.
Move constant +63 to the right side and change its sign.
Subtract numbers.
Divide both sides of equation with 13.
Hope this helps.
r3t40
Work:
Equation;
Collect like terms and calculate sum of positive numbers.
Move constant +63 to the right side and change its sign.
Subtract numbers.
Divide both sides of equation with 13.
Hope this helps.
r3t40