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hernsl0263
13.08.2019 •
Mathematics
Which expressions are equivalent to the one below? check all that apply. log(10^5)
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Ответ:
See explanation
Step-by-step explanation:
There are so many ways we can rewrite
.
We can apply the power rule to obtain:
We could also simplify this further because![\log10=1](/tpl/images/0174/8501/67a39.png)
This implies that:
Or
All these are equivalent expressions.
Ответ:
120m^2
Step-by-step explanation:
Let's start with the bottom. Since the height, base and width are all 4m, we can say that one square = 16 m^2.
There are 5 squares (counting the bottom), and 16 * 5 = 80.
Now the top triangles. We can split the bigger triangle in half. The base is 4m, you can tell from the bottom. To find the area of the triangle, split 4 in half to find the base of the smaller triangles, which equals 2.
Now for the smaller triangles, the base is 2 and the height is 5. We know that to find a triangle's area, you do (b * h)/2, which is (2*5)/2 = 5.
The big triangle is 2 of the small triangles, so you can multiply the smaller triangle's area by 2, which is 5 * 2 = 10.
There are 4 identical triangles at the top-- so 10 * 4 = 40.
80 + 40 = 120.
Hope this helps!