Answer:
there are 117 square units.
Step-by-step explanation:
you multiply 13 by 9
please mark brainliest!!
Answer: C
Step-by-step explanation:
By the difference of squares, 
Let's simplify step-by-step.<span><span><span>23.6−<span>7.1a</span></span>−<span>4.2b</span></span>−<span>(<span><span>5.8b</span>−<span>9a</span></span>)</span></span>Distribute the Negative Sign:<span>=<span><span><span>23.6−<span>7.1a</span></span>−<span>4.2b</span></span>+<span><span>−1</span><span>(<span><span>5.8b</span>−<span>9a</span></span>)</span></span></span></span><span>=<span><span><span><span><span><span>23.6+</span>−<span>7.1a</span></span>+</span>−<span>4.2b</span></span>+<span><span>−1</span><span>(<span>5.8b</span>)</span></span></span>+<span><span>−1</span><span>(<span>−<span>9a</span></span>)</span></span></span></span><span>=<span><span><span><span><span><span><span>23.6+</span>−<span>7.1a</span></span>+</span>−<span>4.2b</span></span>+</span>−<span>5.8b</span></span>+<span>9a</span></span></span>Combine Like Terms:<span>=<span><span><span><span>23.6+<span>−<span>7.1a</span></span></span>+<span>−<span>4.2b</span></span></span>+<span>−<span>5.8b</span></span></span>+<span>9a</span></span></span><span>=<span><span><span>(<span><span>−<span>7.1a</span></span>+<span>9a</span></span>)</span>+<span>(<span><span>−<span>4.2b</span></span>+<span>−<span>5.8b</span></span></span>)</span></span>+<span>(23.6)</span></span></span><span>=<span><span><span>1.9a</span>+<span>−<span>10b</span></span></span>+<span>23.6</span></span></span>
4.6 because you round up because the next number is less than 5
