All categories

2 years ago

I need helpppppp!!!!

Mathematics

1 answer:

Naddik [55]2 years ago

6 0

Answer:

The first one

Step-by-step explanation:

neritic zone, shallow marine environment extending from mean low water down to 200-metre (660-foot) depths, generally corresponding to the continental shelf. Neritic waters are penetrated by varying amounts of sunlight, which permits photosynthesis by both planktonic and bottom-dwelling organisms.

You might be interested in

The team ratio of games won to games played was 2 to 7. If the team played 49 games, how many games did the team fail to win?

Nikolay [14]

Answer:

they failed to win 35 games

6 0

3 years ago

Write a polynomial function in it's factored form with zeros 5, -1, and 2

inna [77]

Answer:

(x - 5)(x + 1)(x - 2) = 0

Step-by-step explanation:

If a polynomial function has roots a, b, and c, then it is (x - a)(x - b)(x - c).

The roots here are 5, 1, and 2, so the factors are

(x - 5)(x - (1))(x - 2)

The function is:

(x - 5)(x + 1)(x - 2) = 0

7 0

3 years ago

Find the absolute maximum and minimum values of f on the set D. f(x, y) = x3 − 3x − y3 + 12y + 1, D is quadrilateral whose verti

mojhsa [17]

$D$ is the set of points,

$\left\{(x,y)\mid-2\le x\le2,x\le y\le3\right\}$

Check for critical points:

$f(x,y)=x^3-3x-y^3+12y+1\implies\begin{cases}f_x=3x^2-3=0\implies x=\pm1\\f_y=-3y^2+12=0\implies y=\pm2\end{cases}$

Of these 4 points, only 2 belong to $D$ , (-1, 2) and (1, 2), for which we have

$\begin{cases}f(-1,2)=19\\f(1,2)=15\end{cases}$

Now look for extrema along the boundary.

If $x=-2$ , then

$f(-2,y)=-y^3+12y-1\implies f'(-2,y)=-3y^2+12=0\implies y\pm2$

We have $f'(-2,y)>0$ for $-2$ and $f'(-2,y)$ for $2$ , which indicates a local maximum at $y=2$ and minima at the endpoints of this boundary. So

$\begin{cases}f(-2,2)=15\\f(-2,-2)=-17\\f(-2,3)=8\end{cases}$

If $x=2$ , then

$f(2,y)=y^3+12y+3\implies f'(2,y)=-3y^2+12=0\implies y=\pm2$

We have $f'(2,y)$ for $2$ , so we have extrema at the endpoints of this boundary.

$\begin{cases}f(2,2)=19\\f(2,3)=12\end{cases}$

If $y=x$ , then

$f(x,x)=9x+1\implies f'(x,x)=9>0$

which tells us $f$ is strictly increasing on this boundary, giving the extrema we already know about,

$\begin{cases}f(-2,-2)=-17\\f(2,2)=19\end{cases}$

If $y=3$ , then

$f(x,3)=x^3-3x+10\implies f'(x,3)=3x^2-3=0\implies x=\pm1$

We have $f'(x,3)>0$ for $-2$ and $1$ , and $f'(x,3)$ for $-1$ . This indicates a maximum at $x=-1$ and a minimum at $x=1$ , with

$\begin{cases}f(-2,3)=8\\f(-1,3)=12\\f(1,3)=8\\f(2,3)=12\end{cases}$

From this analysis, we find that $f$ attains an absolute maximum of 19 at (-1, 2) and (2, 2), and an absolute minimum of -17 at (-2, -2).

4 0

3 years ago

Help T-T

Reil [10]

Answer:

Step-by-step explanation:

If 5/8 are eating salads, and 1/4, or 2/8 are eating sandwiches. Add 2/8 and 5/8 to get 7/8. That means only 1/8 are eating neither salads or sandwiches. Divide 24 by eight. You get 3. Since only 1/8 are eating neither sandwiches or salads you multiply 3 times one which gives you 3.

3 0

3 years ago

Callie drew the map below to show her neighborhood. If each unit in the coordinate plane represents 1.5 miles, how many miles is

astraxan [27]

I’m so sorry but I need to answer 2 questions to be able to ask mine again I apologize

3 0

3 years ago