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Sergio039 [100]
3 years ago
6

Determine the point on the hyperbola 3x^2−10y^2=20 closest to the point (0, -7).

Mathematics
1 answer:
stepan [7]3 years ago
7 0

Answer:

Step-by-step explanation:

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Which relation is a function?
xz_007 [3.2K]

Answer:

I see this

"Which relation is a function?

A {(-3,4),(-3,8),(6,8)}

B {(6,4),(-3,8),(6,8)}

C {(-3,4),(3,-8),(3,8)}

D {(-3,4),(3,5),(-3,8)}"

So the answer is none of these.

Please make sure you have the correct problem.

Step-by-step explanation:

A set of points is a function if you have all your x's are different.  That is, all the x's must be distinct. There can be no value of x that appears more than once.

If you look at choice A, this is not a function because the first two points share the same x, which is -3.

Choice B is not a function because the first and last point share the same x, which is 6.

Choice C is not a function because the last two points share the same x, which is 3.

Choice D is not a function because the first and last choice share the same x, which is -3.

None of your choices show a function.

If you don't have that choice you might want to verify you written the problem correctly.

This is what I see:

"Which relation is a function?

A {(-3,4),(-3,8),(6,8)}

B {(6,4),(-3,8),(6,8)}

C {(-3,4),(3,-8),(3,8)}

D {(-3,4),(3,5),(-3,8)}"

7 0
3 years ago
12x(x+2)−5(2x−1)<br><br> find the equation
ankoles [38]
Perform the indicated multiplications...

12x*x+12x*2-5*2x-5*(-1)

12x^2+24x-10x+5  combine like terms

12x^2+14x+5
7 0
2 years ago
Read 2 more answers
Question 4 options:<br><br> tan Z<br><br><br> cos X<br><br><br> sin X<br><br><br> sin Z
ser-zykov [4K]

Answer:

sin X

Step-by-step explanation:

sin X = \frac{opposite}{hypotenuse} = \frac{YZ}{XZ} = \frac{84}{85}

4 0
3 years ago
Sum of 2x 2 + 3x - 4, 8 - 3x, and -5x 2 + 2.
Salsk061 [2.6K]
 (2x²<span> + 3x - 4) +  (8 - 3x) + (-5x</span>²<span> + 2)

= </span> 2x² + 3x - 4 +  8 - 3x - 5x² + 2

= -3x² + 6

= 3(-x² + 2)
5 0
3 years ago
For bone density scores that are normally distributed with a mean of 0 and a standard deviation of​ 1, find the percentage of sc
Shkiper50 [21]

Answer:

a) Scores of 2 and higher are significantly high

b) Scores of -2 and lower are significantly low

c) Scores between -2 and 2 are not significant.

Step-by-step explanation:

Mean = 0

Standard deviation = 1

a. significantly high​ (or at least 2 standard deviations above the​ mean).

2 standard deviations above the mean is:

0 + 1*2 = 2

So scores of 2 and higher are significantly high

b. significantly low​ (or at least 2 standard deviations below the​ mean).

2 standard deviations below the mean is:

0 - 1*2 = -2

So scores of -2 and lower are significantly low

c. not significant​ (or less than 2 standard deviations away from the​ mean).

2 standard deviations above the mean is:

0 + 1*2 = 2

2 standard deviations below the mean is:

0 - 1*2 = -2

So scores between -2 and 2 are not significant.

3 0
3 years ago
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