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Katarina [22]
3 years ago
14

All of the following were advantages the North enjoyed over the South EXCEPT

Mathematics
1 answer:
olganol [36]3 years ago
5 0

Your list does not include any advantages
that the North enjoyed over the South.

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Find the length of the chord made by 3x2 - y2 = 3 and y + x – 5 = 0.
MArishka [77]

Answer:

The correct answer is "9√2 units".

Step-by-step explanation:

The given equations are:

⇒ 3x^2-y^2=3...(equation 1)

⇒ y+x-5=0...(equation 2)

According to the 2nd equation, we get

⇒ y+x-5=0

⇒              y=5-x

On substituting the value of "y" in the 1st equation, we get

⇒  3x^2-y^2=3

     3x^2-(5-x)^2=3

     3x^2-(25+x^2-10x)=3

     2x^2+10x-28=0

On taking common, we get

     x^2+5x-14=0

On applying factorization, we get

     x^2+7x-2x-14=0

   x(x+7)-2(x+7)=0

           (x+7)(x-2)=0

                        x+7=0

                              x=-7

or,

                         x-2=0

                                x=2

Now,

The points are:

(-7, 12) = (x₁, y₁)

(2, 3) = (x₂, y₂)

By using the distance formula, the length of chord will be:

= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

On substituting the values in the above formula, we get

= \sqrt{(2-(-7))^2+(3-12)^2}

= \sqrt{(9)^2+(-9)^2}

= \sqrt{81+81}

= 9 \sqrt{2} units

8 0
3 years ago
Write 11.183 million in scientific notation.
babymother [125]
The answer is 1.1 x10^7
5 0
3 years ago
Will mark brainliest, please answer:)
yanalaym [24]

Check the picture below.

7 0
3 years ago
If you flip a coin 10 times, what is the best prediction possible for the number of times it will land on tails?
Serjik [45]

Answer:

5

Step-by-step explanation:

The probability of tails is 1/2, so the expected value is (1/2) (10) = 5.

8 0
3 years ago
Read 2 more answers
Form a third degree polynomial function with real coefficients such that -9+i and 7 are zeros
jonny [76]
Yes they are that's correct
7 0
3 years ago
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