Answer:
RQS is 107 degrees
Given, (9x - 4)(9x + 4) = ax² - b
From algebraic identities:
We know, (a + b)(a - b) = a² - b²
Now, 81x² + 36x - 36x - 16 = ax² - b
81x² - 16 = axis² - b
So ax² = 81x²
a = 81
-b = -16
b = 16
Solution
Therefore, the value of a is 81.
<h2>MyHeritage</h2>
Answer:
14 cm.
Step-by-step explanation:
The formula for the perimeter of a rectangle is P = 2l + 2w, where P is the perimeter, l is the length, and w is the width.
In this case, the width is 4 cm and the length is 3 cm.
P = 2(3) + 2(4)
P = 6 + 8
P = 14
So, the perimeter of the rectangle is 14 centimeters.