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
RSB [31]
3 years ago
8

I need help with surface area for a pyrimid please

Mathematics
4 answers:
IrinaVladis [17]3 years ago
6 0
Okay do find the area of a triangle and then add it to the area of the rectangles
exis [7]3 years ago
6 0
SA = Base Area • 2 + base perimeter • distance

SA = 1/2(12•8)+(12+10+10)•10
1/2(96)+(32•10)
48+320
SA= 368
Svetlanka [38]3 years ago
5 0
SA = Base Area • 2 + base perimeter • distance

SA = 1/2(12•8)+(12+10+10)•10
1/2(96)+(32•10)
48+320
SA= 368
kifflom [539]3 years ago
5 0
SA = Base Area • 2 + base perimeter • distance

SA = 1/2(12•8)+(12+10+10)•10
1/2(96)+(32•10)
48+320
SA= 368
You might be interested in
The line y = 2x - 16 is a tangent to the curve y = ax³ + bx at the point where x = 2. Find the value of a and of b.​
finlep [7]

I might not be right but a is 2 and b is 16

Step-by-step explanation:

7 0
3 years ago
Find the directional derivative of the function at the given point in the direction of the vector v. h(r, s, t) = ln(3r + 6s + 9
vodka [1.7K]

Answer:

D_\overrightarrow{\rm v} h(r,s,t)=(\frac{2}{7}\overrightarrow{\rm i})*(\frac{1}{r+2s+3t})+(\frac{6}{7}\overrightarrow{\rm j})*(\frac{2}{r+2s+3t})+(\frac{3}{7}\overrightarrow{\rm k})*(\frac{3}{r+2s+3t})

Step-by-step explanation:

First,  let’s check to see if the direction vector is a unit vector:

||v||=\sqrt{(14)^{2} +(42)^{2} +(21)^{2}   } =\sqrt{2401} =49

It’s not a unit vector. therefore let's divide the vector by its magnitude in order to convert it into a unit vector:

\overrightarrow{\rm v}=(\frac{14}{49}\overrightarrow{\rm i})+(\frac{42}{49}\overrightarrow{\rm j})+(\frac{21}{49}\overrightarrow{\rm k})= (\frac{2}{7}\overrightarrow{\rm i})+(\frac{6}{7}\overrightarrow{\rm j})+(\frac{3}{7}\overrightarrow{\rm k})

Now, the directional derivative is given by:

D_\overrightarrow{\rm v} h(r,s,t)=\frac{\partial h(r,s,t)}{\partial r}\overrightarrow{\rm i} + \frac{\partial h(r,s,t)}{\partial s}\overrightarrow{\rm j} + \frac{\partial h(r,s,t)}{\partial t}\overrightarrow{\rm k}

So let's calculate the partial derivates:

\frac{\partial }{\partial r} ln(3r+6s+9t)=\frac{3}{3r+6s+9t}=\frac{1}{r+2s+3t}

\frac{\partial }{\partial s} ln(3r+6s+9t)=\frac{6}{3r+6s+9t}=\frac{2}{r+2s+3t}

\frac{\partial }{\partial t} ln(3r+6s+9t)=\frac{9}{3r+6s+9t}=\frac{3}{r+2s+3t}

Therefore:

D_\overrightarrow{\rm v} h(r,s,t)=(\frac{2}{7}\overrightarrow{\rm i})*(\frac{1}{r+2s+3t})+(\frac{6}{7}\overrightarrow{\rm j})*(\frac{2}{r+2s+3t})+(\frac{3}{7}\overrightarrow{\rm k})*(\frac{3}{r+2s+3t})

3 0
3 years ago
10+x=21 ?<br><br> What’s the answer
Goryan [66]

Answer:

x=11

Step-by-step explanation:

first you flip the X and the 10, then subtract the 10 on both sides and you should be left with x=11

3 0
3 years ago
What is the slope of (10, 8) and (-5, 8)
Eva8 [605]

Answer:

0/-5

Step-by-step explanation:

y2-y1/x2-x1

8-8/5-10= 0/5

4 0
2 years ago
WILL GIVE BRAINLIEST IF YOU ARE CORRECT!!!<br>L, M, and N are integers and L​
schepotkina [342]

Answer:

where is the rest of the question?

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • The drama club is selling short-sleeved shirts for $5 each, and long-sleeved shirts for $10 each. They hope to sell all of the s
    16·2 answers
  • What fraction is equal to 30/45
    11·1 answer
  • How do you do a 3-step equation?
    14·1 answer
  • Hola que es <br> 34+34+34+34+3+43+4+34+3+4+3
    15·2 answers
  • Two lines are perpendicular, and neither line is horizontal. Which of the following is not necessarily true of the lines?
    5·1 answer
  • Help me please and thankyou
    5·2 answers
  • HELP PLEASEE i need it
    11·1 answer
  • There is a snowstorm in a certain town. In 30 minutes, 78 in. of snow falls. It continues at the same rate for a total of 2 h. W
    7·2 answers
  • Describe the pattern in each sequence and determine the next term of the sequence.
    12·1 answer
  • PLZ HELP I HAVE 5 MINS FIRST RIGHT GETS BRAINLYEST
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!