Answer:
Step-by-step explanation:
Which is the only fraction that must be represented by a nonterminating decimal?
1 answer:
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1) In this problem, the first thing to do is to enlist the categories:
workers time to clean # apartments
8 2h15 12
8 9 x
2) Note that the number of cleaners is the same. So, we can pick the ratios that fall under the category <em>time </em>and <em>#apartments</em>
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We need to convert that 2h 15 into decimal form before setting the ratios:
3) Now, we can set the ratios and solve for x:
Thus, the answer is 48
Answer:
5
Step-by-step explanation:
Original equation:
Divide both sides by 7
Rewrite in log
You can do mental math to realize this equals 5, or plug this into your calculate (if it allows you to set the base), but if you can't do either, you can use the change of base formula:
You get:
When you calculate using a calculator you should get 5
Plug in what we know:
Find the cube root of both sides:
Simplify: