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
goldenfox [79]
1 year ago
6

Quiz 10-1 intro circles central angles question 9

Mathematics
1 answer:
kompoz [17]1 year ago
3 0

Answer:

if the diameter of the circle is 25, then the radius will be 12.5.

A=3.14(12.5)2 --> 490.9m^2

C= 2*3.14(12.5)---> 78.5 m

You might be interested in
What is the answer a, b, c, or d
podryga [215]

Answer: Choice B

(-2, 5)

==================================================

Explanation:

The original system is

\begin{cases}-4x+3y = 23\\ x-y = -7\end{cases}

Multiply both sides of the second equation by 3. Doing so leads to this updated system of equations

\begin{cases}-4x+3y = 23\\ 3x-3y = -21\end{cases}

Now add straight down

The x terms add to -4x+3x = -1x = -x

The y terms add to 3y+(-3y) = 0y = 0

The terms on the right hand sides add to 23+(-21) = 2

We end up with the equation  -x = 2 which solves to x = -2

Now use this to find y. You can pick any equation with x,y in it

----------------

-4x+3y = 23

-4(-2)+3y = 23

8+3y = 23

3y = 23-8

3y = 15

y = 15/3

y = 5

Or

x-y = -7

-2-y = -7

-y = -7+2

y = -5

y = 5

Either way, we get the same y value.

So that's why the solution is (x,y) = (-2, 5)

6 0
2 years ago
There was a bag of counters. 45 were large! For every large counters 3/5 were small! The green was 300% than yellow, there were
madreJ [45]

Answer:

12 is the correct answer

7 0
2 years ago
How do mental math strategies help you solve problems such as the ones above?
Luden [163]

With mental math, you can perform equations quickly and efficiently. They also help you to develop your own strategies and solve more complex math equations. Hope this helps;)


7 0
3 years ago
Help!!!!!!!!!!!!!!!!!!!!
lapo4ka [179]
Well...   the segment FG = 4x + 3, the segment GH = 7x - 12, now, the
 
segment FH = FG + GH, those two fellows added up, and we know that FG and GH are both equal halves because G is the midpoint.

thus, FG = GH
or

\bf 4x+3=7x-12\implies 3+12=7x-4x\implies 15=3x
\\\\\\
\cfrac{15}{3}=x\implies \boxed{5=x}\\\\
-------------------------------\\\\
thus\qquad 
\begin{cases}
\overline{FG}=4x+3\\
4(5)+3\\
23\\
------\\
\overline{GH}=7x-12\\
7(5)-12\\
23
\end{cases}\impliedby equal\ halves
\\\\\\
\overline{FH}=23+23\implies \overline{FH}=46\implies 6y-2=46
\\\\\\
6y=46+2\implies y=\cfrac{48}{6}

and fairly sure, you know how much that is.
7 0
3 years ago
38- Blank:_____=12c+4+3c
dimaraw [331]

Answer:

38-15c-4

Step-by-step explanation:

38-x=12c+4+3c

38-x=15c+4

x=38-15c-4

7 0
2 years ago
Other questions:
  • Your state charges 5% sales tax on nonfood items. You're buying a light bulb for $3.00, cereal for
    13·1 answer
  • In a health club, research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard dev
    6·1 answer
  • By what least number should 648 be divided to get a perfect cube
    14·1 answer
  • Can someone help with geometry !! If m
    5·1 answer
  • 2(4+c)=67 help solve for c
    5·1 answer
  • If x represents the first, or smallest, of three consecutive odd integers, express the sum of the three integers in terms of x.
    10·1 answer
  • HELPPPPPPPPPPPPPPPPPPPPPP
    11·2 answers
  • Y= 8x + 168 show your work
    11·1 answer
  • Algebra one slope-intercept form
    10·2 answers
  • How to do this friends ???
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!