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
Tasya [4]
2 years ago
9

А)

Mathematics
1 answer:
Nookie1986 [14]2 years ago
6 0

Answer:

Step-by-step explanation:

surface area of sphere=a

4pir^2=a

r^2=a/4p

r=root(a/4pi)

if radius is doubled

r1=2root(a/4pi)

r1^2=4(a/4pi)

a/a1=(4pia/4pi)/(4pi 4a/4pi)=1/4

so a is increased by 4 times

You might be interested in
300g of bananas cost £1.80. how much does 1kg cost?
amm1812
Maybe try dividing by 300 and timesing by 1000?
4 0
2 years ago
Read 2 more answers
Indicate a general rule for the n th term of this sequence. 6a, 3a, 0, -3a, -6a, . . .
GrogVix [38]
Hello : 
(-6a)-(-3a) =(-3a)-(0) = (0)-(3a) = (3a)-(6a) = -3a (arthmetic<span> sequence, the common  -  diff is : d= -3a   the first term is : U1 = 6a
</span><span>a general rule for the n th term is : Un =U1+(n-1)d
Un = 6a +(n-1)(-3a) =
Un = 6a -3an+3a
</span>Un  = -3an +9a

3 0
3 years ago
there are 27 red or blue marbles in a bag. The number of red marbles is 5 less than 3 times the number of blue marbles. How many
Natasha2012 [34]
8 blue marbles and 19 red
7 0
3 years ago
PLS HELP! ASAP!
Oduvanchick [21]

Answer:

i only know (d)

was -i s now

1.8 m - 0.6 m

1.2 m - 0.4 m

2.4 m - 0.8 m

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
I need your help to unscramble these words​
Alinara [238K]
2. Terminating
3. Repeating
4. Like infactors
5. Unlike
6. Common denominator
4 0
3 years ago
Other questions:
  • 2143.57333 whole number
    13·1 answer
  • Given the equation 5x − 4 = –2(3x + 2), solve for the variable. Explain each step and justify your process.
    14·1 answer
  • I'm not really 100% sure on how to do this??
    14·1 answer
  • Cira is going for a run on a trail.so far she has 6/4 of a mile.she still has 2/3 Of the trail left to run.how long is the trail
    7·1 answer
  • I need help....and please explain how you got it
    13·1 answer
  • A cone has a diamete of 3 inches the cone hold 12 cubic inches of water to the nearet inch what is the height of the cone
    7·1 answer
  • Alfonso and Gracie have decided to join a gym! Gracie found a gym that costs $20 to join and charges $4 per class. Alfonso found
    14·1 answer
  • Given one zero of the polynomial function, find the other zeros.
    14·1 answer
  • Hello can some one please answer this ASAP
    5·1 answer
  • For the given fact below, which subsequent true/false statement is true?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!