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polet [3.4K]
3 years ago
14

Explain how u can use estimation to check that ur answer is reasonable

Mathematics
1 answer:
Pie3 years ago
6 0
Do the opposite of the problem
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Ella has 50 stacks of ten pennies in each stack. Describe how to find how many pennies Ella has in all
k0ka [10]
You would do ten times fifty. which would be 500
6 0
3 years ago
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In the drawer you have 8 black socks and 5 yellow socks, if you pick 2 socks what is the probability that pick out a black sock
Nataliya [291]

Answer:

10/39

Step-by-step explanation:

The chances of picking a black sock on first try are 8/13, and the chances of picking out a yellow sock without replacing the black sock are 5/12. If you multiply 8/13 and 5/12, you get 40/156, and if you simplify, you will get 10/39 as your answer.

7 0
3 years ago
Given that f(a+b)= f(a) + f(b) and f(x) is always positive, what os the value of f(0)?
FrozenT [24]
This is a strange question, and f(x) may not even exist. Why do I say that? Well..

[1] We know that f(a+b) = f(a) + f(b). Therefore, f(0+0) = f(0) + f(0). In other words, f(0) = f(0) + f(0). Subtracting, we see, f(0) - f(0) = f(0) or 0 = f(0).

[2] So, what's the problem? We found the answer, f(0) = 0, right? Maybe, but the second rule says that f(x) is always positive. However, f(0) = 0 is not positive!

Since there is a contradiction, we must either conclude that the single value f(0) does not exist, or that the entire function f(x) does not exist.

To fix this, we could instead say that "f(x) is always nonnegative" and then we would be safe.
4 0
3 years ago
Is -49 a rational number? please explain
aleksklad [387]
Yes, because a rational number is any number that can be expressed as a fraction a/b where a/b are both integers, but cannot be zero.
7 0
2 years ago
Just give answers I don't care the explaining just give me the answers I don't want to explain because I'm Savage just give answ
timama [110]
3.)9 10/11
5.)11 6/15
7.)11 5/6
9.)9 7/8
4 0
3 years ago
Read 2 more answers
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