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BARSIC [14]
3 years ago
11

QUICKEST ANSWER BRAINLIEST CORRECT AND A FOLLOWanswer the 3 questions ​

Mathematics
2 answers:
alexgriva [62]3 years ago
7 0

Answer:

1. the answer is No

2. A is the answer

3. A is the answer

Step-by-step explanation:

Verdich [7]3 years ago
5 0

Answer:

Step-by-step explanation:

1=no

the rest are pretty easy, all you do is plug in your (x.y)-->x+y=?

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That would be 4
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Find and identify the traces of the quadric surface x2 + y2 − z2 = 36 given the plane. x = k Find the trace. Incorrect: Your ans
AlekseyPX

Answer:

Hyperbola.

Step-by-step explanation:

We start from the function:

x^{2} +y^{2} -z^{2} =36

We may get the traces if we cut the surface in planes x=k. This is equivalent to replace x for k:

k^{2}+y^{2} -z^{2}=36\\y^{2} -z^{2}=36-k^{2}

The last equation is the equation of an hyperbola, which varies its characteristics depending on K (the plane cut).

3 0
3 years ago
2x+3y=1, -x+2y=-4 solve using substitution method
ollegr [7]

Step-by-step explanation:

1) 2x+3y-3y=1-3y. -x+2y= -4

2x/2=1-3y/2. -(1-3y/2)=-4

x=1-3y/2. -1+3y/2= -4

x=1-3(-2)/2 3y/2= -4+1

x=1+6/2 3y/2×2/3= -3×2/3

x=7/2 y= -2

S.s{ 7/3,-2}

2). -4x-6y+6y=7-6y. 4x+y= -2

-4x/-4=7-6y/-4. 4(-7-6y/4)+y= -2

x= -7-6y/4. -7-6y+y = -2

x= -7-6/4 -5y/5= 5/5

x=-13/4 y= 1

S.s { -13/4, 1 }

8 0
2 years ago
A study was being conducted about birth weights of babies at a local hospital and found the average to be 7.6 pounds with a stan
dangina [55]

Answer:

The birth weight associated with the lowest 1% is 4.6 pounds.

Step-by-step explanation:

Let <em>X</em> represent the birth weights of babies.

It is provided that X\sim N(7.6,1.3^{2})

It is also provided that many pre-mature births weights are in the lowest 1% of births.

Let <em>x</em> represent the births weights that are in the lowest 1% of births.

That is, P (X < x) = 0.01.

⇒ P (Z < z) = 0.01

The corresponding <em>z</em>-score is, <em>z</em> = -2.33.

Compute the value of <em>x</em> as follows:

z=\frac{s-\mu}{\sigma}\\\\-2.33=\frac{x-7.6}{1.3}\\\\x=7.6-(1.3\times 2.33)\\\\x=4.571\\\\x\approx 4.6

Thus, the birth weight associated with the lowest 1% is 4.6 pounds.

7 0
3 years ago
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