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
Radda [10]
3 years ago
7

How do you do this??

Mathematics
2 answers:
lisabon 2012 [21]3 years ago
8 0

Answer:

131.964 cm

Step-by-step explanation:

C = 2 \pi r = 2 * 3.142 * 21 = 3.142 * 42 = 131.964 \ cm

Alex777 [14]3 years ago
6 0

The formula for the circumference of a circle = 2 x radius x pi

The radius is given as 21 cm and pi = 3.142

Circumference = 2 x 21 x 3.142 = 131.964 cm

You might be interested in
a factory makes 718 toy trains in one day .the toy trains are placed in boxes of 30 in what place will the first digit of the qu
ycow [4]
The first digit of the quotient is the first number of the answer of your division problem. the answer is 2
6 0
3 years ago
A tug boat traveled -15 miles in 0.3 hours what was its velocity
GenaCL600 [577]

Answer:

22.35 m/s

Step-by-step explanation:

The distance is always a positive unit, so distance traveled (d) = 15 miles

Time (t) = 0.3 hours

Time (t) = 0.3 * 60 = 18 minutes

(1 hour = 60 minutes)

Velocity (v) = ?

The formula of distance is: d = v*t

=> v = d/t = 15/18 = 0.83 miles/minute

we can also calculate velocity is meter/sec, for that

1 minute = 60 sec

=> 18 mins = 18*60 = 1080 sec

1 mile = 1609.34 meters

=> 15 miles = 15 * 1609.34 = 24,140 m

hence,

v = 24,140/1080 = 22.35 m/s

4 0
3 years ago
A game decreased in price by 2/3. After the reduction it was priced at £13. What was the original price of the game?​
Archy [21]

Answer:

x = 39

Step-by-step explanation:

Based on the given conditions, write: x=\frac{13}{1-\frac{2}{3}}

Find common denominator and write numerators above common denominator: x=\frac{\frac{13}{3-2} }{3}

Calculate the sum or difference: x=\frac{\frac{13}{1} }{3}

Divide the fraction by multiplying its reciprocal: x=13*3

Calculate the product or quotient: x=39

Answer: x=39

5 0
2 years ago
Read 2 more answers
Please help me!!!!!!!!!!!
shutvik [7]

The given parabola is y+4=12(x-7)^2. Compare with the standard equation of a parabola in vertex form, y-c=a(x-b)^2.

The vertex of this parabola is (b,c). Compare y+4=12(x-7)^2 with the standard equation y-c=a(x-b)^2.

we see c=-4,b=7. Thus, the vertex of the given parabola is (7,-4).


8 0
4 years ago
Read 2 more answers
How do you do this? (Not looking for answer, just how to do it)
Anit [1.1K]
All triangles add up to 180 degrees. Since sines can't be a negative, you need to add -130 to 180. The answer to this question would be sine 50 degrees. 
8 0
3 years ago
Other questions:
  • Using the quadratic formula I can't remember what to do next <br>​
    13·1 answer
  • Solve -5(3n + 4) = 40. <br> -4<br> -3<br> 3<br> 4
    9·2 answers
  • Solve for A.<br><br> 7a + 2 = 3a + 14
    8·2 answers
  • If p-3, p+3, 4p+3 are three consecutive terms of a geometric progression, find the possible values of p and the corresponding va
    9·2 answers
  • What is the range of the function f(x) = 3x2 + 6x – 8?
    13·1 answer
  • Please answer correctly !!!!!!!!!! Will mark brainliest !!!!!!!!!!!!
    10·2 answers
  • What is 8/15÷2/5?What so u think is the best answer for this problem??
    15·2 answers
  • HELPPPP PLEASE I HAVE SO MANY COOLDOWNS AND PLS EXPLAIN I DONT GRT THIS
    6·1 answer
  • Someone please help me!!!!what’s the answer????
    6·1 answer
  • What is the answer someone help meeee
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!