Multiplying by 100 shifts the decimal 2 places to the right.
Example: 3.45 × 100 = 345.
an = 5n − 7
This is an arithmetic sequence with first term a = -2 and common difference d = 5.
General formula: an = a + (n−1)d = -2 + (n−1)×5 = 5n − 7.
The house was built by my father.
The original sentence is in simple past tense ("built"), so the passive form should be in simple past too.
Passive voice: Subject + was/were + past participle + by + agent.
Formula: Perimeter = 2 × (Length + Width)
⇒ 66 = 2 × (15 + Width)
Solving: 33 = 15 + Width ⇒ Width = 18 meters.
Number of rabbits = 3/8 × 480
= 180
Number of white rabbits = 2/5 × 180
= 72
Given radius (r) = 30 cm and distance from center to chord (d) = 10 cm
Let's find the length of the chord using the formula:
Length = 2√(r² - d²)
= 2√(30² - 10²)
= 2√(900 - 100)
= 2√800
= 2√(400 × 2)
= 2 × 20√2
= 40√2 cm
A compound noun is formed when two or more words combine to create a single noun (e.g., toothpaste, classroom).
It names a person, place, thing, or idea using combined words.
x: -3 < x < 6
This represents all numbers greater than -3 and less than 6.
A digraph is when two letters are used together to represent one sound (e.g., sh, ch, th).
It's common in English spelling patterns and phonics.
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