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Lorico [155]
3 years ago
7

find the population density for an area that is 0.7 square miles and has a population of 31160the population density is what peo

ple / square mile
Mathematics
1 answer:
s2008m [1.1K]3 years ago
8 0
31160- 0.7=44514.285714
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Carolina ha dibujado a varios de sus amigos y también varios personajes de Los
Lana71 [14]

Answer:

what does this mean

Step-by-step explanation:

4 0
3 years ago
7. You are ordering sweaters from American Eagle. Each sweater costs $25. They also charge a shipping fee of $7. You spent. $132
NARA [144]

Answer:

Step-by-step explanation:

Alright, after reading this problem, let’s highlight some key points. Each sweater costs $25, we can write that down as 25x because will represent the amount of sweaters we buy. But we have a shipping fee of $7, so we will +7 to our highlights. And the total money spent was $132.

So far, we have: 25x + 7 = 132

Let’s subtract the 7 from the 132. Now we have: 25x = 125

Then we can divide by 25 on each side, and get x by itself.

X = 5 sweaters.

BONUS: Let’s replace 5 for our x to prove our answer

25(5) + 7 = 132 >>> 125 + 7 = 132 >>> 132 = 132 :D

There you go!! We buy 5 sweaters from American Eagle..!

6 0
3 years ago
Four times the difference of a number and seven is 12
vekshin1

4(x-7)=12=


4x-28=12 

add 28 to both sides

4x=40

x =40/4 = 10

x = 10

8 0
3 years ago
Help help help........
adoni [48]
It should be B because if class average will increase then the cost of books will be increased. Therefore, class average will be independent variable and cost of books will be  dependant.

Hope this helps you out... :)

3 0
4 years ago
Read 2 more answers
Determine the value of x.
Akimi4 [234]

Answer:   \frac{10}{\sqrt{3}}

This is equivalent to \frac{10\sqrt{3}}{3}

======================================================

Explanation:

To get the first value mentioned above, we simply divide the long leg (10) over the square root of 3.

This is due to the fact that if x is the short leg, then x*sqrt(3) is the long leg. We go in reverse of this process to go from long leg to short leg.

The expression \frac{10}{\sqrt{3}} is the same as \frac{10\sqrt{3}}{3} after we multiply top and bottom by sqrt(3) to rationalize the denominator.

Side notes:

  • This entire process only applies to 30-60-90 triangles.
  • The hypotenuse of a 30-60-90 triangle is twice as long as the short leg, so the hypotenuse is 2x = 2*\frac{10\sqrt{3}}{3} = \frac{20\sqrt{3}}{3}  units long.
  • You could use the tangent ratio to help isolate x. You would either say tan(30) = x/10 or tan(60) = 10/x as the first equation to set up.
8 0
3 years ago
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