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lys-0071 [83]
3 years ago
6

The area of the united states is 3,794,100 square miles. which is the best estimation of this area?

Mathematics
2 answers:
klasskru [66]3 years ago
8 0

Answer:

c

Step-by-step explanation:

To estimate, round up to 4,000,000 since 7 is larger than 5. Since we move the decimal 6 times, the correct answer is 4 x 106. _sorry im late_

ludmilkaskok [199]3 years ago
7 0
The answer is B to ur question
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I need help with #3 plz
Nadusha1986 [10]
The correct answer is A. 10 bracelets

5 0
3 years ago
Read 2 more answers
A forestal station receives the locations of two fires, one of them in a forest located 11 Km heading N69°W from the station. Th
loris [4]

Answer:

  30.7 km

Step-by-step explanation:

The distance between the two fires can be found using the Law of Cosines. For ΔABC in which sides 'a' and 'b' are given, along with angle C, the third side is ...

  c = √(a² +b² -2ab·cos(C))

The angle measured between the two fires is ...

  180° -(69° -35°) = 146°

and the distance is ...

  c = √(11² +21² -2(11)(21)cos(146°)) ≈ √945.015

  c ≈ 30.74

The straight-line distance between the two fires is about 30.7 km.

8 0
2 years ago
1. What values of a, b, and c would you use in the quadratic formula for the following equation?
Archy [21]
Question (1):
The general formula of the quadratic equation is:
ax² + bx + c = 0
The given equation is:
5x² + 9x = 4
Rearrange the given equation to look the standard one:
5x² + 9x - 4 = 0
Now, compare the coefficients in the given equation with the standard one, you will find that:
a = 5, b = 9 and c = -4

Question (2):
The given expression is:
 -5 + 2x²<span> = -6x 
</span>Rearrange this expression to be in standard form:
2x² + 6x - 5 = 0
This means that:
a = 2
b = 6
c = -5
The roots of the equation can be found using the formula in the attached image.
Substituting in this formula with the given a, b and c, we would find that the correct choice is third one (I have attached the correct choice)

Question (3):
Quadratic formula (the one used in the previous question, also shown in attached images) is the best method to get the solution of any quadratic equation. This is because, putting the equation in standard form, we can simply get the values of a, b and c, substitute in the formula and get the precise solutions of the equation.

Hope this helps :)

8 0
3 years ago
Read 2 more answers
Simplify this expression
antiseptic1488 [7]

Answer:

2/(3x-2)²

Step-by-step explanation:

4x²-6x³-2x²+6x³/4x²-6x³-6x³+9x^4=

2x²/4x²-12x³+9x^4=

2x²/x²(4-12x+9x²)=

2/9x²-12x+4

2/(3x-2)²

6 0
3 years ago
Use the Distributive Property to find the Product 4 and 2/5 × 10
arlik [135]
Distributive Property ( A number, n, is multiplied to the expression in parentheses)

4( \frac{2}{5}  \times 10) =  \\ 4( \frac{20}{5} ) =  \\ 4(4) = 16
5 0
3 years ago
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