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Yuliya22 [10]
2 years ago
15

You rode your bike on a 6 and 1/2 mile path. You sister rode on a different path that was 2 and 3/10 miles long. How much farthe

r did you ride?
Mathematics
1 answer:
Alex_Xolod [135]2 years ago
7 0

To solve, the first step is to find the LCM (least common denominator). In this scenario, it's ten.

6 5/10 - 2 3/10

From here, do the math. It's easy this time, what's 5 - 3? Two.

Now, subtract two from six. (four)

4 and 2/10

4 and 1/5

There! :)

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Answer:5

Step-by-step explanation:

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3 years ago
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The waking time of a student under common conditions is normally distributed with mean of 30 hours and a standard deviation of 5
Elina [12.6K]

Answer:

If the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 30 hours

Standard Deviation, σ = 5 hours

We are given that the distribution of waking time is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.95

P( X < x) = P( z < \displaystyle\frac{x - 30}{5})=0.95  

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 30}{5} = 1.645\\\\x = 38.225  

Thus, if the walking time is greater than or equal to 38.225 hours, than it exceeds 95% probability that is lie in top 5%.

4 0
3 years ago
*WILL GIVE BRAINLIEST*
Pepsi [2]

Answer:

$50 and

$30

Step-by-step explanation:

Question 1. Principal = $500

Rate = 5%

Time = 2yesrs

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= 500 x 5 x 2 /100

= 5000/100

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Therefore, interest =

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Step-by-step explanation:

13 was subtracted from a number and that difference was then divided by 5. After which, that quotient was multiplied by 7. The resulting product was -7. What was the number? (

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Abbie decides to start doing crunches as part of her daily workout. She decides to do 15 crunches the first day and then increas
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For this case, the first thing we must do is define a variable.
 We have then:
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 4: increase the number 4 each day
 Answer:
 
An explicit formula for the number of crunches Abbie will do on day n is:
 
an = 4n + 15
3 0
3 years ago
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