1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Radda [10]
2 years ago
15

HWLP PLEASE I DONT KNOW HOW TO DO It

Mathematics
2 answers:
Fofino [41]2 years ago
7 0

\textrm {Volume of rectangular pyramid :}

\mathrm {Volume = \frac{1}{3} \times length \times width \times height}

\mathrm {Volume = \frac{1}{3} \times 9 \times 8 \times 9}

\mathrm {Volume = 3 \times 72}

\mathrm {Volume = 216 cm^{3}}

\textrm {Volume of rectangular prism :}

\mathrm {Volume = length \times width \times height}

\mathrm {Volume = 9 \times 8 \times 7}

\mathrm {Volume = 72 \times 7}

\mathrm {Volume = 504 cm^{3}}

\textrm {Total volume of composite figure :}

\textrm {Volume of pyramid + volume of prism}

\mathrm {216cm^{3} + 504cm^{3}}

\mathrm {720cm^{3}}

const2013 [10]2 years ago
5 0
Your answer is 33 because you have to add all the numbers together
You might be interested in
Consider the following equation. f(x, y) = e−(x − a)2 − (y − b)2 (a) Find the critical points. (x, y) = a,b (b) Find a and b suc
murzikaleks [220]

a.

f(x,y)=e^{-(x-a)^2-(y-b)^2}\implies\begin{cases}f_x=-2(x-a)e^{-(x-a)^2-(y-b)^2}\\f_y=-2(y-b)e^{-(x-a)^2-(y-b)^2}\end{cases}

Critical points occur where f_x=f_y=0. The exponential factor is always positive, so we have

\begin{cases}-2(x-a)=0\\-2(y-b)=0\end{cases}\implies(x,y)=\boxed{(a,b)}

b. As the previous answer established, the critical point occurs at (-3, 8) if \boxed{a=-3} and \boxed{b=8}.

c. Check the determinant of the Hessian matrix of f(x,y):

\mathbf H(x,y)=\begin{bmatrix}f_{xx}&f_{xy}\\f_{yx}&f_{yy}\end{bmatrix}

The second-order derivatives are

f_{xx}=(-2+4(x-a)^2)e^{-(x-a)^2-(y-b)^2}

f_{xy}=4(x-a)(y-b)e^{-(x-a)^2-(y-b)^2}

f_{yx}=4(x-a)(y-b)e^{-(x-a)^2-(y-b)^2}

f_{yy}=(-2+4(y-b)^2)e^{-(x-a)^2-(y-b)^2}

so that the determinant of the Hessian is

\det\mathbf H(x,y)=f_{xx}f_{yy}-{f_{xy}}^2=\left((4(x-a)^2-2)(4(y-b)^2-2)-16(x-a)^2(y-b)^2\right)e^{-2(x-a)^2-2(y-b)^2}

\det\mathbf H(x,y)=(16(x-a)^2(y-b)^2-8(x-a)^2-8(y-b)^2)+4)e^{-2(x-a)^2-2(y-b)^2}

The sign of the determinant is unchanged by the exponential term so we can ignore it. For a=x=-3 and b=y=8, the remaining factor in the determinant has a value of 4, which is positive. At this point we also have

f_{xx}(-3,8;a=-3,b=8)=-2

which is negative, and this indicates that (-3, 8) is a local maximum.

8 0
4 years ago
Steven bought a watch for $140 and added a 40% markup before reselling.
dusya [7]

Answer:

$196

Step-by-step explanation:

8 0
3 years ago
The figure is cut into 15 equal pieces. Shade 2/3 of the figure.
Anna007 [38]

Answer:

Shade 10 of the pieces.

Step-by-step explanation:

7 0
3 years ago
Rajan ran 15km in 90 mins. How hast did he run.<br>​
VikaD [51]

2700 bc in everminutes he would run 920

8 0
3 years ago
Read 2 more answers
How can I solve this problem
never [62]
This is number 14 answer

7 0
3 years ago
Other questions:
  • Use determinants to find out if the matrix is invertible.[Start 3 By 3 Matrix 1st Row 1st Column 20 2nd Column 5 3rd Column 3 2n
    7·1 answer
  • What is the reciprocal of 535 ? PLEASE ANSWER QUICK QUICKLY
    6·2 answers
  • Chloe collected 4 times as many bags of cans as her friend and her friend collected 1/6 of a bag how much did Chloe collect
    13·1 answer
  • Answer this please, need by 7:00 AM, and thx if you answered
    6·1 answer
  • 3/5 + 1/25 = ??<br><br> Simplify answer fully
    6·2 answers
  • Graph f(x) = (x+1) (x-5)
    7·1 answer
  • Jamie bought a necklace at a department store for 23.50. Later that day, she saw the same necklace at a local jewelry store for
    12·1 answer
  • Help me pls ☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️☹️
    5·2 answers
  • Help needed!
    6·1 answer
  • A car travels 18 miles per gallon of gas used. Which equation best represents the proportional relationship between the y miles
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!