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
lyudmila [28]
3 years ago
13

If a cell has a volume of 3nm, what are the surface area and the volume of the cell?

Mathematics
1 answer:
harkovskaia [24]3 years ago
7 0
A cell has a radius: r = 3 nmThe surface area of a cell:A = 4 r² π = 4 · 3² π = 4 · 9 π = 36 π nm²The volume of a cell:V = 4/3 r³ π = 4/3 · 3³ π = 4 · 9 π = 36 π nm³Answer: The surface area is 36 π nm² and the volume is 36 π nm³.
You might be interested in
Irene has 1 gallon of milk. She uses
Umnica [9.8K]

Answer:

32

Step-by-step explanation:

In 1 gallon, there are 128 ounces.

Divide 128 by 4 and get 32.

5 0
3 years ago
The states C and D spend a total of ​$56.6 million for tourism. The state C spends ​$2.6 million more than the state D. Find the
igomit [66]

Answer:

State C : $30.9 Million       State D : $25.7 Million

Step-by-step explanation:

It may help to just forget about the word "million" and focus on the decimal number part,so one you get the deciaml number you can just put the word million after it as your answer.

First do 56.6 divided by 2, which equals 28.3. Since it said that State C spends 2.6 million more, you hvae to add 28.3 and 2.6 together, which also equals 30.9. So now you know State C spends $30.9 million total. In order to find out how much money State D sends, you have to do 56.6 - 30.9,which comes up to 25.7. So finnaly you know that State C spends 30.9 million dollars and State D spends 25.7 million dollars.

5 0
3 years ago
Pls help me plssss help asap
Anestetic [448]

Answer:

1) 15

2) 18

3) 72

8 0
3 years ago
Given the sample 4, −2, −6, 19, 6, add one more sample value that will neither change the mean nor the variance. Round to two de
DedPeter [7]

Answer:

Cannot create sample

Step-by-step explanation:

We are given the following in the question:

4, -2, -6, 19, 6

Formula:

\text{Variance} = \displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{21}{5} = 4.2

Sum of squares of differences = 0.04 + 38.44 + 104.04 + 219.04 + 3.24 = 364.8

s^2 = \dfrac{364.8}{4}} = 91.2

If we add an observation equal to the mean of given sample, then the mean and of new sample will not change.

New sample:

4, -2, -6, 19, 6, 4.2

Mean =\displaystyle\frac{25.2}{6} = 4.2

Sum of squares of differences = 0.04 + 38.44 + 104.04 + 219.04 + 3.24 + 0 = 364.8

s^2 = \dfrac{364.8}{5}} = 72.96

Thus, the variance of new sample changes.

Thus, it is not possible to create a sample.

5 0
3 years ago
find the zeros of the polynomial x square-3 and verify the reationship between the zeros and the coefficient.​
defon

Answer:

√3, and -√3

Step-by-step explanation:

to find the zeros or roots of the polinomial x²-3 make it equal to zero and solve for x

x²-3=0 add 3 to both sides to isolate x

x² = 3 squareroot both sides

√x²= √3

x= ±√3 are the two zeros

7 0
3 years ago
Other questions:
  • Help me find the Simplified product ? Math
    12·1 answer
  • ok i want a bf but every time i make a guy friend they dont talk to me bc i was talking to other people so i dont are about look
    5·2 answers
  • Which number line represents the solutions to lx + 4 = 2?
    8·1 answer
  • 20 POINTS AND BRAINIEST FOR THOSE WHO ANSWER CORRECTLY
    6·2 answers
  • If somehting is $599 and it's price increases by 5%, how would you find the total cost?
    14·1 answer
  • Step by step how to do 4 divided by 2/3.
    11·2 answers
  • 4)<br> Write an inequality for the graph below. If necessary, use<br> &lt;= for &lt; or &gt;= for .
    14·1 answer
  • PLZ HELPPPP<br><br> C candies cost 5 dollars. how much money would 12 dollars cost?
    11·2 answers
  • Evaluate the following expression. Round to the nearest hundredth when necessary.<br> 27
    7·1 answer
  • Betty's bedroom is 18ft
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!