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
DedPeter [7]
3 years ago
10

The radius of a circle is 20 cm. Find its area in terms of π π.

Mathematics
1 answer:
natulia [17]3 years ago
4 0

Answer:

A = 400\pi cm^2

Step-by-step explanation:

Area of a circle is:

A = πr²

We are given a radius of 20 cm.

A = πr²

A = π(20)²

A = π400

<em>A = 400πcm²</em>

Hope this helps.

You might be interested in
Need help finding out what 3x=y and x-2y = 10
sweet-ann [11.9K]

Answer:

x=-2, y=-6

Step-by-step explanation:

Simple substitution.

Since y is isolated in one of the equations already, you can plug it into the second equation.

x - 2(3x) = 10

x - 6x = 10

-5x = 10

x = -2

Sub. x = -2 into 3x = y:

3(-2) = y

y = -6

4 0
3 years ago
If m(x) =x+5/x-1 and n(x) =x-3 which function has the same domain as (m.n)(x)
Travka [436]

Answer:

Step-by-step explanation:

m (x) = (x+ 5) / (x -1)        and     n(x) = x - 3.

m(x) = \dfrac{x+5}{x-1}

Hence

m(n) = \dfrac{n+5}{n-1}

but n is a function and n = x-3. Now, replace value of n on m (n)

(m(n))= \dfrac{(x-3)+5}{(x-3)-1}

simplify it

(m\bullet n)(x) =\dfrac{x+2}{x-4}\\

since (m . n) (x)  is a fraction function, its domain will be all x such that the denominator is NOT 0. That is

x-4\ne 0\rightarrow x\ne 4

among options, only C has the same denominator with (m\bullet n)(x)

Hence their domains are the same.

4 0
3 years ago
What is 6 /9ths divided by 5/8ths
Ivahew [28]
The answer to this problem is 16/15

$o u solve this by turning 5/8 into 8/5 then turn 6/9 into 2/3 , Then u multiply 2/3 and 8/5 and you get the answer 16/15.
4 0
3 years ago
Solve for BC and round your answer to the nearest hundredth
Tasya [4]
You gotta round the be to 100,000
6 0
3 years ago
Solve for x 3(8x-5)=-4(7-6x)
tekilochka [14]

3(8x - 5) = -4(7 - 6x)

Distribute 3 and -4 inside their respective parentheses.

24x - 15 = -28 + 24x

Add 28 to both sides.

24x + 13 = 24x

Subtract 24x from both sides.

13 = 0

This is an untrue statement, so that means there are no solutions to this equation.

Your answer is no solution.

6 0
3 years ago
Read 2 more answers
Other questions:
  • The membership in the math club at Rogers Junior High increased by 6% from last year to this year. The president of the math clu
    10·1 answer
  • Help me please :) this is due today
    9·1 answer
  • Please help me I am having a hard time understanding this !
    5·1 answer
  • What is not an equation of the line going through (6,7) and (2,-1)
    15·2 answers
  • A pizza parlor uses 42 tomatoes for each one
    13·1 answer
  • A formula for finding SA, the surface area of a rectangular prism, is
    9·1 answer
  • 0.3546875 Rounded to the nearest tenth
    12·2 answers
  • Write the sentence as an equation<br><br> 46 less than m is 54.<br><br> Can someone please help me
    7·1 answer
  • Looking at the fraction 6/3, what type of fraction is it?
    9·2 answers
  • I need help math hard
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!