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PolarNik [594]
3 years ago
5

What is the value of 2^-6 as a fraction

Mathematics
1 answer:
Annette [7]3 years ago
8 0
Answer:

1/64

Step-by-step explanation:

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Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 12. Use the empirical rule t
MissTica

Answer:

A) 99.7% of people have an IQ between 64 and 136.

B) 5% of people have an IQ score less than 76 or greater than 124.

C) 16% of people have an IQ score greater than 112.

Step-by-step explanation:

The Empirical Rule tells us that, in a normal or 'bell-shaped' distribution, 68% of the data is one standard deviation from the mean, 95% of the data is two standard deviations from the mean, and 99.7% of the data is three standard deviations from the mean.

A) 64 and 136 are 3 standard deviations away from the mean, so 99.7% of people have an IQ between 64 and 136.

B) 76 and 124 are 2 standard devations away from the mean, but the answer is asking what percentage is not between them. 100% - 95% gives us 5%.

C) 112 is one standard deviation away from the mean. If we want to find the percentage greater, then we can do 100% - 50% (as 112 is to the left of the mean), then we can take half of 68 to get 34%, and after subtracting 50% and 34% from the 100%, we get 16%.

8 0
3 years ago
Pablo has completed 44 deliveries so far this week. He needs to make 55 deliveries for the week. What
Dennis_Churaev [7]

Answer:

<h2>80%</h2>

Step-by-step explanation:

step one:

completed delivery = 44

total delivery to be made= 55

Step two

Required is the percentage completed

the formula is

=completed/total*100

=44/55*100

=0.8*100

=80%

Hence  Pablo has completed 80% of the deliveries so far

3 0
2 years ago
Four times the sum of 8 and some number is 4. What is the number?
Lunna [17]

Answer:

\Huge \boxed{\mathrm{-7}}

\rule[225]{225}{2}

Step-by-step explanation:

Let the number be x.

4(x+8)=4

Dividing both sides by 4,

x+8=1

Subtracting 8 from both sides,

x=-7

The number is -7.

\rule[225]{225}{2}

3 0
3 years ago
Read 2 more answers
Dawson rakes leaves in his neighborhood. The equation y = 10x represents the amount of money he earns. What is the constant of p
Dafna11 [192]

Answer:

idk for sure but id say 10x

Step-by-step explanation:

5 0
3 years ago
A fishing store gives customers 10 new lures for every 2 fishing poles they buy. How
Firlakuza [10]

Answer:

40 lures

Step-by-step explanation

First, 10 for every 2  means multiplication. 2 goes into 8   4 times. 4x2=8

10 lures multiplied by 4 is 40.

I hope this helps! ツ

3 0
3 years ago
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