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taurus [48]
3 years ago
8

12 POINTS!!!!PLS HURRY!!Two ships are near a buoy in the open ocean. One ship is 20 km due north of the buoy, and the other ship

is 13.5 km due east of the buoy.
Enter a number in the box to correctly complete the statement. Round the answer to the nearest tenth.
The distance between the two ships is _____ km

Mathematics
1 answer:
Irina18 [472]3 years ago
8 0

Answer:

The distance between two ships to the nearest tenth place is, 24.1 km

Step-by-step explanation:

Using Pythagoras theorem:

\text{Hypotenuse side}^2 = \text{Adjacent side}^2 +\text{Perpendicular side}^2

As per the statement:

Two ships are near a buoy in the open ocean. One ship is 20 km due north of the buoy, and the other ship is 13.5 km due east of the buoy.

You can see the diagram for this problem as shown below.

Let x be the distance between the two ships.

Hypotenuse side = x km

Adjacent side = 13.5 km

Perpendicular side = 20 km

Apply the Pythagoras theorem:

x^2 = 13.5^2+30^2 = 182.25+400 = 582.25

⇒x = \sqrt{582.25}

Simplify:

x = 24.129857024 km

Therefore, the distance between two ships to the nearest tenth place is, 24.1 km

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If f(x)=x^2 and g(x)=1÷2x+3 find g(f(-1))
gogolik [260]

ANSWER

g(f( - 1)) = \frac{1}{5 }

EXPLANATION

The given function is:

f(x) =  {x}^{2}

and

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g(f(x)) = g( {x}^{2} )

g(f(x)) = \frac{1}{2{x}^{2} + 3 }

To find g(f(-1)), we substitute x=-1, to obtain;

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We now add the denominator to obtain;

g(f( - 1)) = \frac{1}{5 }

6 0
4 years ago
Which statement is true about the factorization of 30x2+40xy+51y2
icang [17]
The complete question is
Which statement is true about the factorization of 30x² + 40xy + 51y²<span>?

A. The factorization of the polynomial is 10(3x2 + 4xy + 5y2).
B. The polynomial can be rewritten as the product of a trinomial and xy.
C. The greatest common factor of the polynomial is 51x2y2.
D. The polynomial is prime, and the greatest common factor of the terms is 1.

we know that

case A) </span>is not right because 10 is not a common factor of the three terms.
case B) is not right because the original polynomial is already a trinomial
case C) is not right because the terms do not contain 51x^2y^2
<span>case D) is right 
because
</span><span>Factors of 30 are-----> 1,2,3,5,6,10,15,30
</span>Factors of 40 are-----> 1,2,4,5,8,10,20,40
Factors of 51 are-----> 1,51
<span>so
</span><span>The "Greatest Common Factor" is the largest of the common factors
</span><span>the GFC is 1

therefore

the answer is the option
</span>D. The polynomial is prime, and the greatest common factor of the terms is 1<span>



</span>
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