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3 years ago

What is cramer's rule ??

2 answers:

7 0

Cramer's rule is an explicit formula for the solution of a system of linear equations. That has many equations as unknowns and valid whenever the system has a unique solution.

vova2212 [387]3 years ago

6 0

Answer:

Cramer's rule is an explicit formula for the solution of a system of linear equations with as many equations as unknowns, valid whenever the system has a unique solution.

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Find a vector function, r(t), that represents the curve of intersection of the two surfaces. the paraboloid z = 9x2 y2 and the p

dolphi86 [110]

The vector function is, r(t) = $\bold{ < t,2t^2,9t^2+4t^4 > }$

Given two surfaces for which the vector function corresponding to the intersection of the two need to be found.

First surface is the paraboloid, $z=9x^2+y^2$

Second equation is of the parabolic cylinder, $y=2x^2$

Now to find the intersection of these surfaces, we change these equations into its parametrical representations.

Let x = t

Then, from the equation of parabolic cylinder, $y=2t^2$ .

Now substituting x and y into the equation of the paraboloid, we get,

$z=9t^2+(2t^2)^2 = 9t^2+4t^4$

Now the vector function, r(t) = <x, y, z>

So r(t) = $\bold{ < t,2t^2,9t^2+4t^4 > }$

Learn more about vector functions at brainly.com/question/28479805

#SPJ4

7 0

2 years ago

An apprentice productively working a 40-hour week earns more wages and is worth considerably more to the local union and the ind

zvonat [6]

$3.60

You can get this by determining that the rate of which they are paid is $4 an hour (divide the total by the amount of hours). Then you can find the rate of which they collect dues by dividing the amount they paid by their total (3%).

Using those numbers you can find the total amount the second person paid.

4 0

4 years ago

Help can’t figure it out

m_a_m_a [10]

87.4% is the answer to this question

4 0

3 years ago

I’m not sure how to solve this, anyone know?

siniylev [52]

Answer:

A' = (-4, 7)

B' = (3, 5)

C' = (1, 2)

Step-by-step explanation:

The question is asking you to translate the function by adding 4 to the x-value of each point and 2 to the y-value of each point.

I didn't double-check my math, but since the question is asking for an ordered pair, this should be correct.

7 0

3 years ago

What is the answer to 12,8,10,6

maw [93]

Q1) From 12 m to 18 m

It is a percentage increase

Percentage change = (18-12)/12 × 100

= 6/12 × 100

= 50%

Q2) From 27 days to 30 days

It is a percentage increase

Percentage change = (30-27)/27 × 100

= 3/27 × 100

= 11.1%

Q3) From $48.50 to $38.80

It is a percentage decrease

Percentage change = ($48.50 - $38.80)/48.50 × 100

= 9.7/48.50 × 100

= 20%

Q4) From 25 lb to 12 lb

It is a percentage decrease.

Percentage change = 25-12/25 ×100

= 13/25 × 100

= 52%

Q5) from 10mm to 3mm

it is a percentage decrease.

Percentage change = (10-3)/10 ×100

= 7/10 × 100

= 70%

Q6) From $875 to $1000

It is a percentage increase.

Percentage change = (1000-875)/875 × 100

= 125/875 ×100

= 14.3%

Q7) from $18.1 to $22.50

It is a percentage increase

Percentage change = (22.50-18.10)/18.10 × 100

= 4.4/18.10 × 100

= 24.3%

Q8) From 32 people to 3040 people

It is a percentage increase.

Percentage change = (3040-32)/32 × 100

= 3008/32 × 100

= 9400%

Q9) From 28 stray cats to 5 stray cats.

It is a percentage decrease.

Percentage change =(28-5)/ 28 × 100

= 23/28 × 100

= 82%

Q10) From 12 words to 90 words.

It is a percentage increase.

Percentage change = (90-12)/12 × 100

= 78/12 ×100

= 650%

Q11) From 47 mph to 35 mph

It is a percentage decrease

percentage change = (47 - 35)/47 × 100

= 13/47 × 100

= 25.5%

Q12) From 8 computers to 15 computers

It is a percentage increase

percentage change = (15-8)/8 × 100

= 7/8 × 100

= 87.5%

4 0

3 years ago