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>
I believe the answer is 1. One is the only number that can go into both 8 and 9.
Answer:
27
Step-by-step explanation:
9+8+10=27
We want to divide whole sand into scoops, so we have to divide 4/5 by 1/20. Lets do this
We know that if we want to divide 2 fraction we can multiply first by inverse of second fraction instead of dividing.,so:
scoops - its our result.
A 3 1/3
Subtract
8x-2-5x=8
-5x
3x-2=8
+2 +2
3x=8
X=10/3
