Q1. The answer is <span>(x – 14)(x + 14)
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x² - 196 = x² - 14²
a² - b² = (a - b)(a + b)
a = x, b = 14
x² - 196 = x² - 14² = (x - 14)(x + 14)
Q2. The answer is (3x - 8)(3x + 8)
9x² - 64 = (3x)² - 8²
a² - b² = (a - b)(a + b)
a = 3x, b = 8
9x² - 64 = (3x)² - 8² = (3x - 8)(3x + 8)
Q3. The answer is (7x - 4)²
49x² - 56x + 16 = (7x)² - 2 * 7x * 4 + 4²
(a - b)² = a² - 2ab + b²
a = 7x, b = 4
49x² - 56x + 16 = (7x)² - 2 * 7x * 4 + 4² = (7x - 4)²
Answer:
#1 is the 1st option. #2 is the 4th option.
Step-by-step explanation:
Have a great day mate!
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Answer:</h2><h2>The value after 0 years = $ 800</h2><h2>The value after 1 year = $600</h2><h2>The value after 2 years = $450</h2><h2>The value after 3 years = $337.5</h2><h2>The value after n years = computer cost at (n-1) year -
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Step-by-step explanation:
The cost of computer = $ 800
It losed 1/4th of value every year.
The value of computer after 0 years = cost of computer = $ 800
The value after 1 year = 800 - ( ) = $600
The value after 2 years = 600 - ( ) = $450
The value after 3 years = 450 - ( ) = $337.5
The value after n years = computer cost at (n-1) year -
Jenna need 2 days to make jam if she wants to jar 12 litres of jam in all.
Step-by-step explanation:
The equation shows the amount of jam Jenna has jarred is related to the number of days she has spent making jam.
where j represents the amount of jam jarred and d represents the number of days spent making jam.
To find the number of days that Jenna will need if she wants to jar 12 litres of jam is to substitute in
Dividing 6 on both sides, we get,
Thus, Jenna need 2 days to make jam if she wants to jar 12 litres of jam in all.
Answer:
Step-by-step explanation: