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
Elodia [21]
2 years ago
5

(x+4)+(x+7)=81

Mathematics
1 answer:
klemol [59]2 years ago
6 0

In this article, I will show you how to find the area of a circle and express your answer in terms of pi (π). First, you'll need to familiarize yourself with the formula for calculating the area of a circle:

A = π * r²

Let's define our variables:

A: area of the circle

π: pi (a mathematical constant that is approximately equal to 3.141492 . . .)

r: radius of the circle (the distance from the circle's center point to its edge)

Typically, to find the area of a circle, we would simply plug in the circle's radius for r and 3.141592 for π. If so, our answer would be a number.

Therefore, the answer is 16π.

You might be interested in
13. Find the surface area of each figure to the nearest tenth. Show your work.
stiv31 [10]
A. The figure is a triangular pyramid. You can findits surface area by adding up the area of the three faces of the triangle and the area of the base. A derived formula also is used where the SA is equal to 12 times the perimeter of base times the slant height, added to that is the area of the base. The area of the square base is s^2. Its perimeter is 4s.

SA of Pyramid = 12*P*l + s^2
SA of Pyramid = 12*4s*l + 16^2
SA of Pyramid = 12*4(16)*(17) + (16)^2
SA of Pyramid = 11,008 square inches

b.) The formula for the SA of a cone is: 

SA of cone = πr[r+√(h^2+r^2)]
SA of cone = π(3)[(3+√(8^2+3^2)]
SA of cone = 108.8 square inches
7 0
3 years ago
Read 2 more answers
Find the quotient. (12x 2 - 10x -12) ÷ (3x + 2)
MAXImum [283]
I'm attaching the solution.. feel free to ask if you have questions.. I basically did long division.  Hope this helps.

5 0
3 years ago
PLEASE HELP MIDDLE SCHOOL MATH​
snow_tiger [21]

Answer:

x>=5

Step-by-step explanation:

If x is less than five, then there will be a negative in the square root, which will yield x an  imaginary number.

3 0
3 years ago
Solve the following system of equations graphically.<br> y=3x+4<br> y=-2x-5
ExtremeBDS [4]

Answer:

 (x, y) = (-1.8, -1.4)

Step-by-step explanation:

3 0
2 years ago
Help ASAP<br><br> https://brainly.com/question/15912533?answeringSource=feedPersonal%2FhomePage%2F18
givi [52]

Answer:  

Last one: 5x - 3√y + 1

Step-by-step explanation:

8x + √1 - √9y - √9x^2

8x + 1 - 3√y - 3x

5x + 1 - 3√y

5x - 3√y + 1

 

CAN YOU PLEASE MARK MY ANSWER BRANLIEST

7 0
3 years ago
Read 2 more answers
Other questions:
  • (25 Points) You develop an app to help students complete their homework. To earn money, you sell advertising space on the app’s
    13·1 answer
  • Samantha is baking a cake. She needs 3/4 cup of butter for each cake. One stick of butter is 1/2 cup. How many sticks of butter
    13·2 answers
  • Write the equation of a secant line? Screenshot of the question is attached
    7·1 answer
  • Listed below are the amounts​ (dollars) it costs for marriage proposal packages at different baseball stadiums. Find the​ range,
    8·2 answers
  • Last month, mrs. Johnson received a phone bill for $26.86. If the company charges $0.17 per minute l, and there were no other ch
    11·2 answers
  • In ΔKLM, the measure of ∠M=90°, the measure of ∠K=68°, and MK = 42 feet. Find the length of LM to the nearest tenth of a foot.
    12·1 answer
  • F(x) = 3x2 +6x - 18 Find f(10)​
    12·2 answers
  • 3x+2x-13=47 solve for x <br><br> Please show the work
    10·1 answer
  • Kara has 6 cups of flour. She uses 1 1/2 cups of flour for one batch of muffins. How many batches can she make from the flour sh
    6·2 answers
  • Oliver earns $12 per hour doing extra lawn chores for his neighbor. They also pay him $40 each month for cutting the grass,
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!