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
artcher [175]
3 years ago
14

Please Help!!! Surface Area of a ball!!! Extra points and brainiest will be given!!!!!

Mathematics
1 answer:
Helen [10]3 years ago
7 0

Answer:

530.66 cm²

Step-by-step explanation:

First, since the formula for the area of a ball is r² x 3.14, you multiply 13 by itself. Since 13x13 is 169, you do 3.14x169. Your answer should be 530.66 cm². (i don't know what the other one is, or if it's just a separate question.)

You might be interested in
For each ordered pair, determine whether it is a solution to the system of equations.
-Dominant- [34]

The only ordered pair that is a solution to the given system of equations is (-2, -6)

<h3>System of Linear Equations </h3>

From the question, we are to determine if each ordered pair is a solution to the given system of equations

The given system of equations is

-9x + 2y = 6

5x - 3y = 8

  • For (7, 9)

That is,

x = 7, y = 9

Putting the values into the first equation

Is -9(7) + 2(9) = 6

-63 + 18 = 6

-45 ≠ 6

Thus, (7,9) is not a solution

  • For (0, 3)

That is,

x = 0, y = 3

Putting the values into the first equation

Is -9(0) + 2(3) = 6

0 + 6 = 6

6 = 6

The ordered pair satisfies the first equation

Testing for the second equation

Is 5(0) - 3(3) = 8

0 - 9 = 8

-9 ≠ 8

Thus, (0, 3) is not a solution

  • For (5, -4)

That is,

x = 5, y = -4

Putting the values into the first equation

Is -9(5) + 2(-4) = 6

-45 - 8 = 6

-53 ≠ 6

Thus, (-5,4) is not a solution

  • For  (-2, -6)

That is,

x = -2, y = -6

Putting the values into the first equation

Is -9(-2) + 2(-6) = 6

18 - 12 = 6

6 = 6

The ordered pair satisfies the first equation

Testing for the second equation

Is 5(-2) -3(-6) = 8

-10 + 18 = 8

8 = 8

The ordered pair satisfies the second equation

∴ The ordered pair that is a solution to the system of equations is (-2, -6)

Hence, the only ordered pair that is a solution to the given system of equations is (-2, -6)

Learn more on System of equations here: brainly.com/question/8630769

#SPJ1

3 0
1 year ago
Elise and her younger brother, Reid, take turns loading the dishwasher after dinner. Because she is older, Elise loads the dishw
erik [133]

Answer:

<h2>48</h2>

Step-by-step explanation:

so  for every 3 Reid washes there are 4 Elsie washes

the ratio of washing is 3:4

lets add 3 and 4 up

3 + 4 = 7

now lets divide the total number of washes by the added ratio

84/ 7

=12

now we know that 1 part is 12

to find Elsie's part we need to x 12 by how many parts she has got

she washed 4 times

4 x 12

=48

5 0
3 years ago
The solution of (10 x/6)(10 x/8)=10 to the power of 10​
PolarNik [594]

Answer:

80,60

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Can someone help me with this please and don’t guess I really need help
zysi [14]

Answer:

it should be (5,4)

Step-by-step explanation:

♊♊♊

3 0
3 years ago
Read 2 more answers
Help me plz with my math homework
enyata [817]
86-(5+9)
————- =
3

86-(14)
———- =
3

72
—- = 24
3

45-(11+9)
————- =
5

45-(20)
———— =
5

25
—— = 5
5
6 0
3 years ago
Other questions:
  • Kira goes running Kira goes running Monday, Wednesday, and Friday of each week. Each Monday she runs 2.5 miles, each Wednesday s
    10·1 answer
  • What is the y in 10.3=0.6y
    15·1 answer
  • Solve the following linear equation for x.<br> 2 (5x+8) = 16-5(3+6)
    5·2 answers
  • Rufus collected 18 pounds of
    5·1 answer
  • Find the ratio of 1 1/2 hours to 25 minutes.
    9·2 answers
  • The altitude of an equalateral triangle is 6√3 units long what is the length on one side of the triangle a. 12 b. 6 c. (7√3)/2 d
    11·1 answer
  • 3/24 in lowest terms
    7·1 answer
  • The ratio of the sides of a triangle is 3:4:5 and its perimeter is 48 inches. Find the length of the shortest side.
    9·1 answer
  • What is the value of i^20+1?<br><br> A. 1<br> B. -1<br> C. -i<br> D. i
    14·1 answer
  • The distance Train A travels is represented by y=70x, where y is the distance in kilometers and x is the time in hours. What is
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!