is a perfect square if and only if (m+1)·(m+2)… n. is a perfect square. For the five answer choices, that quantity is 121, 121⋅ 122, 120, 120⋅ 121, and 122, and of those only 121 is a perfect square. Therefore the answer is120!·121!.反馈 收藏 ...
解析 A A is the correct answer.-This is a test of your knowledge of the unit circle and/or unit triangle. Since it is a perfect square, you should know it is a 45-45-90 triangle, for which the diagonal will be the length of the leg times the root of two. 反馈 收藏 ...
Taihu Square, the city's central hub, is adorned with lush greenery and modern architecture. The nearby South Bay Area, with its high-end shopping malls and trendy cafes, provides a perfect blend of leisure and retail therapy. For nature enthusiasts, Yushan National Park, also known as Mount...
The residual sum of squares can be zero. The smaller the residual sum of squares, the better your model fits your data; the greater the residual sum of squares, the poorer your model fits your data. A value of zero means your model is a perfect fit. ...
2022/02/04 | 110次组卷 | 2卷引用:河北省唐山市丰润区2021-2022学年九年级上学期期末考试英语试题 相似题 纠错 详情 收藏 E阅读下面的短文,并根据短文内容完成后面各小题。 Have you ever taken a plane from Beijing Daxing International Airport (BDIA)? After opening on Sept. 25, people are surprise...
This hit home for me as I was sitting with my 2-year-old grandson on a sofa over the Spring Festival holiday. I had brought a children’s book to read. It had simple words and colorful pictures — a perfect match for his age. Picture this: my grandson sitting on my lap as I ho...
Removal of half blocks for the game to simplify rules; a square is now simply full, or empty. Addition of an ‘objective focus’ token to increase interactivity and planning between players at the start of each turn. Alternate objectives are currently being tested; these can be swapped in to...
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Planes can get chilly, and a jumpsuit like this Kirundo one that can keep you warm and cozy is a smart travel outfit. Its long-sleeved and wide-leg silhouette has a stylish square neckline, creating a look that can easily be dressed up or down as your plans require. ...
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