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
Rudiy27
4 years ago
12

Find the circumference and the area of a circle with diameter 7 cm

Mathematics
1 answer:
zepelin [54]4 years ago
3 0
Circumference formula: diamter*pi=7pi
Area = pi*r^2=pi(3.5)^2=12.25pi.
You might be interested in
Find the slope of every line that is parallel to the line on the graph.​
melamori03 [73]

Answer:

-1/5

Step-by-step explanation:

What are parallel lines?

Lines that are parallel never touch. They can extend infinitely and they will still never touch. In order for this to happen the slope of the two lines must be the same. So if we want to find the slope of every line that is parallel to the line on the graph, we simply find the slope of the line of the graph.

Finding the slope

We can find the slope using the following formula:

Slope=\frac{y_2-y_1}{x_2-x_1}

Where the x and y values are derived from any given points on the line (x1,y1) and (x2,y2)

Here the given points are (-5,-1) and (0,-2)

So we have (x1,y1) = (-5,-1) meaning x1 = -5 and y1 = -1

We also have (x2,y2) = (0,-2) meaning x2 = 0 and y2 = -2

Now we plug these values into the formula

Recall formula : Slope=\frac{y_2-y_1}{x_2-x_1}

==> Plug in x1 = -5 , y1 = -1 , x2 = 0 and y2 = -2

Slope=\frac{-2-(-1)}{0-5}

==> simplify numerator and denominator

slope = \frac{1}{-5}

So the slope of the line is -1/5

This means the slope of any parallel line to that line would also have a slope of -1/5

8 0
3 years ago
-3a+8=14 whats the value of A
den301095 [7]

Answer:

or , -3a=14-8

or,  -3a=6

or  , a= 6/3

therefore, value of a= 2

Step-by-step explanation:

4 0
4 years ago
Solve F(x) for the given domain.<br>F(x) = x² + 3x - 2<br>F(3)=____<br>a. 13<br>b. 16<br>C. 40​
Llana [10]

Answer:

B. 16

Step-by-step explanation:

F(3) means we must plug the number "3" into the equation for each x.

(3)^2 + 3(3) -2

9 + 9 - 2

16

5 0
3 years ago
Read 2 more answers
PLEASE HELP!!! I WILL MARK BRAINLIEST!!!!
Marat540 [252]
To answer this question you will use the
Pythagorean Theorem. a^2+b^2=c^2. In this
case a and b are the same because it is a
square. So 2x^2=1600 (c^2 where c=40).
Solve this equation ( divide both sides by two
and find the square root for both). Each side
length should be approximately 28.3 cm.
3 0
2 years ago
What is the K for this story Problem? John bought 27 baseball cards for $9. How many baseball cards can he buy with $84?
Nata [24]

Answer:

210

Step-by-step explanation:

9 divided by 27 = .33333 = .4

you would divide 9 by 27 because if you did 27 divided by 9 he would only have 3 cards

84 divided by .4 = 210

3 0
3 years ago
Other questions:
  • #2
    7·1 answer
  • An elevator starts on the 100th floor of a building in Sims 4 floors every 10 seconds I want floor will the elevator be 60 secon
    10·1 answer
  • Angle 1 and angle 2 are supplementary if m angle 1 is two times m angle 2 what are the measures of both angles
    7·1 answer
  • I need help what is this solution
    15·2 answers
  • Explain the distance formula. Then use it to calcute the distance between A(1,1) and B(7,-7).​
    13·1 answer
  • What is the least common multiple of 9 , 12, 15
    14·1 answer
  • What is the value of the 7 in the number 2 741 203<br><br> give your answer in number
    7·1 answer
  • Find the missing side length.
    5·1 answer
  • Please helps
    5·1 answer
  • Does this image show an enlargement or a reduction?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!