To answer your question: Rewrite <span>81<span>x2</span></span> as <span><span>(<span>9x</span>)</span>2</span>.<span><span><span>(<span>9x</span>)</span>2</span><span>−49</span></span>Rewrite 49 as <span>72</span>.<span><span><span>(<span>9x</span>)</span>2</span><span>−<span>72</span></span></span> Both terms are perfect squares, factor using the difference of squares formula, <span><span><span>a2</span><span>−<span>b2</span></span></span>=<span><span>(<span>a+b</span>)</span><span>(<span>a<span>−b</span></span>)</span></span></span> where <span>a=<span>9x</span></span> and <span>b=7</span>.<span><span>(<span><span>9x</span>+7</span>)</span><span>(<span><span>9x</span><span>−7</span></span><span>)</span></span></span>
Answer:
49/99
Step-by-step explanation:
Follow the first hint. Since there are two numbers that are repeating, the numerator will be 49. The denominator will have two nines.
Hope this helps!
Answer:I believe it’s 40 degrees
Step-by-step explanation:
70
-30
=
40
Answer:
28.27 inches
Step-by-step explanation:
circumference of a circle = πd
9π = 28.27
Answer:Flying potatox x plus y yes
Step-by-step explanation:
