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
ki77a [65]
3 years ago
8

Can someone help on question 2

Mathematics
2 answers:
Kobotan [32]3 years ago
5 0

Step-by-step explanation:

i think option a is the correct answer

Vikentia [17]3 years ago
3 0

Answer:

692.82 m^2

Step-by-step explanation:

Regular tetrahedrons have four equivalent equilateral triangular faces, so only the side length of one is needed.

In practice, you could find the area of one triangular side and multiply it by 4. This is probably what your teacher wants you to do, but there is another way if you have a calculator...

To make it easier, use the following equation to calculate the surface area of a tetrahedron:

Surface Area = sqrt(3) * a^2           ( "a" represents edge length )

sqrt (3) * 20^2

sqrt (3) * 400

692.82032302 m^2

You might be interested in
Need the answer on this ​
denpristay [2]
None of the answers are correct because it’s definitely not “Given” because x=20 is like an answer. It’s also not “Distributive Property”, “subtraction Property”, and or “Additional Property” b/c there’s nothing that can be distributed, subtract or add. It’s just an answer.
3 0
3 years ago
Read 2 more answers
How does your model represent the problem?
Paha777 [63]

Answer:

the first equation is the total legs on one dog being added together with 2 other total dog legs. The second equation is the number of dogs multiplied by the total number of legs on one dog. Either way both equation show 3 dogs with 4 legs each.

8 0
3 years ago
Three-fourths of a research team worked in a lab while one-fourth of the team worked near a pond. Of the researchers who worked
Lisa [10]

Answer:

3.5%

Step-by-step explanation:

In this case, the final probability would be the product of the two probabilities that the plating shows us:

First probability would be:

We are told that three quarters of the equipment (3/4) in the laboratory and the other quarter (1/4) near the pond, we are interested in the latter, that is, the probability is 1/4 = 0.25

Second probability:

We are told that 14% collected insects, therefore it would be 0.14

The final product is the question they ask us:

0.25 * 0.14 = 0.035

Which means that the joint probability is 3.5%

8 0
3 years ago
find the area of the shaded region of the radius is 9<br> Did I get the answer right
crimeas [40]

Answer:69.66

r=9 so diameter is 18, and the shape being a square you do 18 x 18 = 324

now the circles area is 254.34 now find the difference... and it is 69.66

Step-by-step explanation:

5 0
3 years ago
Ariel has already spent 79 minutes on the phone and she expects to spend 4 more minutes with every phone call she routed. In all
hjlf
Answer: 13

Subtract 131-79
Then, divide the sum (52) by 4
Ariel had to route 13 calls
8 0
4 years ago
Other questions:
  • 3(x-2)&gt;-3 anyone know the answer
    8·2 answers
  • What is the length of JK? <br><br> 6 cm<br> 7 cm<br> 10 cm<br> 13 cm
    8·1 answer
  • emily earns $75 per day plus a commission. her commission is 15%. she sells $600 worth of furniture. how much does she earn for
    7·1 answer
  • a health club chargers a monthly fee of $99 plus $2 per visit. donny paid $121 for the month of october. how many times did he v
    5·1 answer
  • If you are on a ship at sea navigating to a point that is 300 miles north and 400 miles west, find the distance from tour ship t
    8·1 answer
  • When 4(0.5x+25y-07x-1.3y+4) is simplified, what is the resulting expression?
    7·1 answer
  • Item 4<br> Simplify. 6 – 20<br><br> –26<br><br> –14<br><br> 14<br><br><br> 26
    15·1 answer
  • You purchase three $0.89 candy bars and you hand the cashier a $5 bill. You then tell them to keep the change as a top. What per
    13·1 answer
  • Cho phương trình: x1 + x2 + x3 + x4 + x5 = 30 (*)
    6·1 answer
  • PLEASE ANSWER ASAP !!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!