1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pickupchik [31]
3 years ago
9

mr sanchez owns a square field. the side lengths are 0.9 kilometers. there are 1980 prairie dog burrows in the field. what is th

e approximate density of prairie dog burrows in burrows in square kilometers
Mathematics
1 answer:
nata0808 [166]3 years ago
5 0
Density is the measurement of the amount of mass per unit of volume. 
In this case we should calculate the density of prairie dog burrows on a square field. This is a surface charge density.It is defined as the total amount of units q per km^2.
to calculate<span> the </span>density of prairie dog burrows, we should divide the total number of  prairie dog burrows in the field <span>by the size of the field. Thus,
</span><span>
 </span>prairie dog <span>burrows in square kilometers= number of dog burrows/ size of the field

size of the field=0.9*0.9=900*900=180000m^2
1980/180000</span><span> m^2= 0.011 dog burrows in square meter 
11 dogs in square kilometer</span>
You might be interested in
Find the length of a
Temka [501]

Answer:

I think it's B I hope this is the right answer.

8 0
3 years ago
Read 2 more answers
A rectangle is inscribed in a right isosceles triangle, such that two of its vertices lie on the hypotenuse, and two other on th
Ronch [10]
Refer to the attachment for the diagram of the problem.

Let us call the two identical sides of the isosceles triangle with s. Since we know that the hypotenuse measures 45 inches, we can find s by using the Pythagorean Theorem:
45^{2} = s^{2}+ s^{2}
45^{2} = 2s^{2}
45^{2} = 2s^{2}
1012.5 = s^{2}
s=31.82

We can notice that the figure will have similar triangles with the smaller triangle having one length equal to 5x. We then compute for the equivalent hypotenuse of the smaller triangle (denoted as y).
\frac{31.82}{5x} = \frac{45}{y}
y=7.07x

We can then solve for the value of x by applying the Pythagorean Theorem in the smaller triangle.
(7.07x)^{2} = (5x)^{2}+ (31.82-2x)^{2}
50x^{2} = 25x^{2}+ 1012.5-127.28x+4x^{2}
0= -21x^{2}-127.28x+1012.5
x=4.55,-10.61

We ignore the negative value since there is no negative side. x is therefore 4.55 thus the dimensions of the rectangle would be 22.75 and 9.1. For the other case, the dimensions would simply be inverted since we would be dealing with a rectangle with its width longer than its length.

6 0
3 years ago
Find the length of Cable 1. <br> Find Cable 2 bridge span. <br> Find Length of Cable 2
marysya [2.9K]
Use your knowledge of trig for this. you know the opposite length, 35, and you need to find the hypotenuse. the trig function to use would be SIN.
\sin(60 ) = 35 \div hyp
try to think about which trig functions to use to find the answers for cable 2. if you need more help leave a message.
8 0
3 years ago
Right now Martha has $600 in her savings account she wants to purchase a used car she decides that it we should put $20 into acc
lapo4ka [179]

Multiply the amount she puts in the account every week by the number of weeks (w) and add that to what she already has saved:

20w + 600 >= 2000

6 0
4 years ago
Read 2 more answers
How many triangles can you construct with the angle measures of 50, 70, and 100?
lidiya [134]

Answer:

0

Step-by-step explanation:

You can't construct any triangles with those angles. Because when you add all the angles of a triangle, it has to add up to 180. But when we add 50,70, and 100, it equals 220. So you can't construct any triangles.

Hope this helps.<em> (If it does, please mark me brainliest)</em>

6 0
3 years ago
Other questions:
  • Write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator.
    6·1 answer
  • Answer to this equation
    8·1 answer
  • A commuter has $245 in his computer savings account. This account changes by -$15 each week he buys a ticket. In one time period
    11·1 answer
  • Someone help plz!!!!!!!!
    11·1 answer
  • 3×3/4=_. This product lies between_and_.
    9·2 answers
  • What is 5x-(x-2)&gt;2x-4(x-8)
    11·1 answer
  • Use the values in the table to determine the slope.
    13·2 answers
  • Find the equation of the linear function represented by the table below in slope-
    5·2 answers
  • What is the coefficient of the term x°ys in the
    7·1 answer
  • A total of 840 people ate at lunch.Which statement is true
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!