Building and solving an equation to model the situation, it is found that it takes 4 min for the prairie dog to reach 13 feet underground.
- Initially, the dog is 5 feet underground.
- Each minute, the dog goes 2 more feet underground.
Hence, the underground height of the dog after t seconds is given by:

The time it takes for the dog to reach 13 feet underground is <u>t for which h(t) = 13</u>, hence:





It takes 4 min for the prairie dog to reach 13 feet underground.
A similar problem is given at brainly.com/question/25290003
This questions can be answered with a calculator, but I have an impression it is meant to be a mental calculation problem, which can be solved as follows.
We know that 10*10=100, in otherwords, √ 100 = 10 which is greater than 9.4247.
We also know that √ 108 is greater than √ 100 =10
So we can conclude that
√ 108 > √ 100 = 10 > 9.4247
or simply
√ 108 > 9.4247
by the transitive property of logical propositions.
Answer:
40000ftMSL
Step-by-step explanation:
We know that airspeed is measured using a pilot tube
And the air pressure is a function of density given as
Pressure= 1/2 xdensityx V²
So at 40,000ftMSL
Is this is replaced for V in the equation then the density of air will be 1/4 that of sea level
So since we are deriving velocity from pressure and pressure is 1/4 so the velocity Will be half of its pressure since velocity is squared from The equation above
Let's first write down all the information given in <em>y = mx + b</em> form. Notice that x-intercept means that <em>y = 0</em> at that point. <em>b</em> is not given, so:

Let's solve for b:


Now we have the equation:

We can plug in every option given to see which choice makes it true:
<u>(0, 30)</u>


<u>(5, 15)</u>



<u>(10, 10)</u>


<u>(-5, 60)</u>


Therefore, choice D or <u><em>(-5, 60)</em></u> is your answer. Hope I could help! :)
<em>*There is probably an easier way to solve this, I just didn't see it when I attacked the problem! :) </em>