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3 years ago

14

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

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