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
WITCHER [35]
3 years ago
15

If an atom has a radius of 65pm, what is its circumference

Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0
To calculate circumference, you must use the equation (65)(2)(Pi) which would be 408.2pm. (IF YOU COUNT PI AS 3.14)
You might be interested in
A cistern can be completely drained by a pipe in 6 hours. It can be filled by two pipes in 4 hours and 5 hours, respectively. Ho
boyakko [2]
X/4 +x/5 -x/6=1
make the denominator the same: 
15x/60 +12x/60 -10x/60=1
17x=60
x=60/17=3.53 hours

the second choice is the correct answer.
6 0
3 years ago
Which of the following is the result of completing the square for x2 + 8x - 6 ?
melamori03 [73]
STEP 1- since 6 doesn't contain the variable to solve for move it to the right side of the equation by subtracting 6 from both sides
X^2-8X=-6
STEP 2- create a trinomial square on the left side of the equation find the value that is equal to the square of half of b the coefficient of x 
(b/2)^2 =(-4)^2
STEP 3- add the term to each side of the equation
x^2-8x+(-4)^2=-6=(-4) 
STEP 4- simplify the equation
x^2-8x+16=10 
STEP 5- factor the perfect trinomial square into (x-4)^2
(x-4)^2=10
STEP 6-solve the equation for x
x=4= square root of 10

 
5 0
3 years ago
Read 2 more answers
The area of a rectangular wall of a barn is 85 square feet. Its length is 12 feet longer than the width. Find the length and wid
MaRussiya [10]

Answer:

Length = 17 feet, Width = 5 feet

Step-by-step explanation:

Given:

The area of a rectangular wall of a barn is 85 square feet.

Its length is 12 feet longer than the width.

Question asked:

Find the length and width of the wall of the barn.

Solution:

Let width of a rectangular wall of a barn = x

<u>As length is 12 feet longer than the width.</u>

Length of a rectangular wall of a barn = 12+x

As we know:

Area\ of\ rectangle=length\times breadth

85=(12+x)x\\\\85=12x+x^{2} \\

Subtracting both sides by 85

x^{2} +12x-85=0\\x^{2} +17x-5x-85=0\\Taking\ common\\x+(x+17)-5x(x+17)=0\\(x+17)(x-5)=0\\x+17=0, x-5=0\\x=-17,x=5

As width can never be in negative, hence  width of a rectangular wall of a barn = x = 5 feet

Length of a rectangular wall of a barn = 12+x=12+5=17\ feet

Therefore, length and width of the wall of the barn is 17 feet and 5 feet respectively.

                 

4 0
3 years ago
Need help asap.pls and thanks
love history [14]

Answer:

your speed is 135 mph

Step-by-step explanation:

                                   

6 0
2 years ago
Help pls D:
olchik [2.2K]
A. The cost of buying x number of concert tickets for $76 each.
3 0
3 years ago
Other questions:
  • If x = 1 is a zero of the polynomial function f(x) = 3x3 − 8x2 + 3x + 2, which of the following is another zero of f(x)? 
    10·2 answers
  • The solution x=1/5 is a solution to which of the following equations?
    5·1 answer
  • The slope of the line graphed below
    6·1 answer
  • Write a linear function f with f(-4) = 2 and f(6) =-3​
    8·1 answer
  • Which expressions represent a quadratic expression in factored form?
    15·2 answers
  • if a scatter plot has no association then a.) it has no ordered pairs B.) its ordered pairs hsve no predictable pattern C.) it h
    9·1 answer
  • 50 POINTS
    7·1 answer
  • Which graph represents 4x + 7y &lt; -21
    15·1 answer
  • 2 sin^2 + sin x - 3 = 0
    14·1 answer
  • Zach has $40,173 in his bank account. He recently decided to move to NYC to pursue an acting career and is not making money. He
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!