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Jlenok [28]
1 year ago
15

Keewan bike 6 miles in 30 minutes at this rate how long would it take him to bike 18 miles

Mathematics
1 answer:
Mandarinka [93]1 year ago
8 0

Answer:

It would take him 90 minutes, 1 hour and 30 minutes, to bike 18 miles

Step-by-step explanation:

Divide 18 by 6 to get 3

Multiply 30 by 3 to get 90

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Find the probability that the mean annual preciptiation will be between 32 and 34 inches. variable is normally distributed
liq [111]
Supposing, for the sake of illustration, that the mean is 31.2 and the std. dev. is 1.9.

This probability can be calculated by finding z-scores and their corresponding areas under the std. normal curve.  
                                                                     34 in - 31.2 in
The area under this curve to the left of z = -------------------- = 1.47 (for 34 in)
                                                                           1.9
                                                                      32 in - 31.2 in
and that to the left of 32 in   is               z = ---------------------- = 0.421
                                                                             1.9

Know how to use a table of z-scores to find these two areas?  If not, let me know and I'll go over that with you.


My TI-83 calculator provided the following result:

normalcdf(32, 34, 31.2, 1.9) = 0.267  (answer to this sample problem)

5 0
3 years ago
the amount of money in an account with continuously compounded interest. calculated to the nearest tenth of a year how long it t
pentagon [3]
You will need this formula:
Years = ln (Total / Principal) / rate
(where "ln" means natural logarithm)
and we'll use $100 and $200 for beginning and ending amount
Years = ln (200 / 100) / rate
Years = 0.69314718056 / .052
Years = <span> <span> <span> 13.3297534723 </span> </span> </span>
Rounding to the nearest tenth of a year:
Years = <span> <span> <span> 13.3

Source:
http://www.1728.org/rate2.htm

</span></span></span>

6 0
3 years ago
Using synthetic divison, what is the quotient of this expression? <br>2x^2+5x-7 over x-2​
a_sh-v [17]

Answer:

A. 2x + 9 + 11 over x - 2

Step-by-step explanation:

2x^2+5x-7 over x-2​

divide - 2x^2 + 5x - 7 over x - 2 = 2x + 9x - 7 over x - 2

= 2x + 9x - 7 over x - 2

divide - 9x - 7 over x - 2 = 9 + 11 over x - 2

= 2x + 9 + 11 over x - 2

7 0
3 years ago
What conclusion can be made based on this Divison problem ? 20 divided by 10 =2
RoseWind [281]

Answer: it obvious that you are not a good non algebraic

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
How many even prime numbers are 0 1 2 3
matrenka [14]
A prime number can <span>be divided evenly only by 1, or itself. </span>
<span>And it must be a whole number greater than 1.

Therefore, the prime numbers between 0, 1, 2, 3 are 

2 and 3 

and the only even one among those two is two, so your answer would be One. </span>
7 0
3 years ago
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