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3 years ago

Write an inequality to model the situation.

Mathematics

2 answers:

svet-max [94.6K]3 years ago

8 0

Answer:

$n >21$

Step-by-step explanation:

The number exceeds 21 or is greater than 21.

‘ $>$ ’ represents greater than.

Let the number be $n$ .

$n >21$

Makovka662 [10]3 years ago

3 0

N > 21 is the answer

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Help me with this please

Fittoniya [83]

Answer:

1. 5

2. 8

Step-by-step explanation:

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3 years ago

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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

4 years ago

-4 + 8 - 5

pochemuha

Answer:

-1

Step-by-step explanation:

read warriors

by eren hunter.

5 0

1 year ago

Read 2 more answers

Need help pls help will gift extra points if help plz explain how you soved it

Sedbober [7]

Answer:

both 125° and the 5x+30 are congruent to eachother. therefore you can go

5x+30=125

subtract 30 from both sides.

5x=95

then divide both sides by 5

x=19

8 0

3 years ago

Ali counted 25 red cards and 75 black cards in a deck of cards what is the ratio of red cars two black cards in simplest form?

Nadya [2.5K]

Step by step;
Red:black
25/75
25 to 75
25/75 / 5/5 = 5/15 you can divided that number me more time (divid it by 5/5) which give you your answer of 1:3

3 0

3 years ago