Answer:
33.2%
Step-by-step explanation:
Calculate the z-scores.
z = (x − μ) / σ
z₁ = (82 − 100) / 15
z₁ = -1.2
z₂ = (98 − 100) / 15
z₂ = -0.133
Use a chart or calculate to find the probability.
P(-1.2 < Z < -0.133) = P(Z < -0.133) − P(Z < -1.2)
P(-1.2 < Z < -0.133) = 0.4470 − 0.1151
P(-1.2 < Z < -0.133) = 0.3319
Rounded to the nearest tenth, the percentage is 33.2%.
In total, they would need 4 pumps. If we divide 55 by 17, we get just more than 3. This little more would need an entire pump. So the answer 4 total, 3 added
Answer:
C
Step-by-step explanation:
Hey there!
So, x is being multiplied by itself three times. Therefore, the exponent needs to be three.
Hope that helps! :)
Stop ! Don't do something you might regret. It's not as bad as you think.
Minutes to days, eh ? What conversions could we find that might help ?
How about . . .
1 hour / 60 minutes
1 day / 24 hours
Both of those fractions are equal to ' 1 ', so we can freely multiply any quantity
by either one or both of them, without changing the value of the quantity.
The conversion you want might look something like this ...
(75 minutes / 1) x (1 hour / 60 minutes) x (1 day / 24 hours) .
After canceling units from top and bottom where possible,
you have ...
(75 x 1 x 1 day) / (1 x 60 x 24) = <em>0.05208333... day</em>
and your head is still right where it belongs, ready to fight another day.
