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Alexeev081 [22]

3 years ago

7

The weather center in Alaska recorded the average temperature for 42 days and prepared the dot plot shown. What was the mean tem

perature during that period?
A. 12.4 degrees
B. 10.7 degrees
C. 11.3 degrees
D. 9 degrees

1 answer:

Rom4ik [11]3 years ago

7 0

Your answer will be C, 11.3. 42 numbers all together, add them up and you get 476 then you divide it by 42 and get 11.3

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Answer:

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Step-by-step explanation:

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3 years ago

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The balance after the payment is $1263.84.

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4 years ago

How many bits does 2 to the 100 have if written in base 2?

S_A_V [24]

Not sure how to give a hint without blatantly giving the answer but...

Consider an n - digit number in base b.

That is N=an−1an−2.....a0=∑k=0akbk
N
=
a
n
−
1
a
n
−
2
.
.
.
.
.
a
0
=
∑
k
=
0
a
k
b
k
Note aka
k
<
b
so we can easily show NN
<
b
n
(may have to repeat and argue inductively.

And presumably to be n - digit than an−1≠0
a
n
−
1
≠
0
so N≥bn−1
N
≥
b
n
−
1
.

So we have: every n digit number is between bn−1
b
n
−
1
inclusively and bn
b
n
exclusively. This should be blindingly obvious to us if b=10
b
=
10
.

So... that's a really important and fundamental result. Remember and use it.

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3 years ago