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Brut [27]
2 years ago
14

What is the answer ?

Mathematics
2 answers:
const2013 [10]2 years ago
7 0

Answer:

b

Step-by-step explanation:

answer is b

Sergio [31]2 years ago
6 0
The answer I always A
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Match the parametric equations with the verbal descriptions of the surfaces by putting the letter of the verbal description to t
alukav5142 [94]

Answer:

1. B

2. C

3. A

4. D

Step-by-step explanation:

The parametric equations of the circular cylinder are:

x(u,v)=a\cos v\\y(u,v)=a\sin v\\z(u,v)=u

If the orientation of the cylinder is changed to have the height u along the x-axis, the parametric equations of the cylinder match:

3. \mathbf{r} \left( u, v \right) = u \mathbf{i} + \cos v \mathbf{j} + \sin v \mathbf{k}

The parametric equations of the circular paraboloid are:

x(u,v)=u\cos v\\y(u,v)=u\sin v\\z(u,v)=u^2

Using the units vectors the parametric equations match:

1. \mathbf{r} \left( u, v \right) = u \cos v \mathbf{i} + u \sin v \mathbf{j} + u^{2} \mathbf{k}

The parametric equations of the cone are:

x(u,v)=au\cos v\\y(u,v)=au\sin v\\z(u,v)=u

Using the units vectors  and rotating the base of the cone from z=0 to x=0  the parametric equations match:

2. \mathbf{r} \left( u, v \right) = u \mathbf{i} + u \cos v \mathbf{j} + u \sin v \mathbf{k}

The equation left is the equation of a plane:

4. \mathbf{r} \left( u, v \right) = u \mathbf{i} + v \mathbf{j} + \left( 2u - 3v \right) \mathbf{k}

5 0
3 years ago
Which number sentence is represented by this model?
Makovka662 [10]

Answer:

Correct answer is B. -3 • 5 = - 15

3 0
2 years ago
155​% of what number is 43.4​?
Fed [463]

67.27

155 = 1.55 x 43.4 = 67.27

7 0
2 years ago
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What are some responsibilities that come with having a checking account?
vampirchik [111]

Answer:

Once the account is open, it is the responsibility of the account holders to reconcile their statements and maintain a proper balance in order to clear all checks. It is very important to pay attention to your balance, and a monthly reconciliation of your account is highly beneficial.

Step-by-step explanation:

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3 years ago
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Isaiah is having his house painted. He paid $525 for the required materials, and he will pay $30 an hour for the painters to com
alukav5142 [94]

Answer:

Step-by-step explanation:

x is the amount of hours it will take. Since he pays $30 per hour, your answer would be 30x + 525

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2 years ago
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