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
klemol [59]
3 years ago
13

The diameter of a circle is 18 centimeters. what is the radius? d=18 cm give the exact answer in simplest form.

Mathematics
1 answer:
goldenfox [79]3 years ago
4 0
The diameter of the circle is 18 cm.

The radius is one half the diameter.
Therefore the radius is  18/2 = 9 cm

Answer: 9 cm
You might be interested in
What is the sum of 4.2 × 10^5 and 5.3 × 10^5?
mojhsa [17]
C  is the correct answer using scientific notation Hope this helps! :D
6 0
3 years ago
Please help me solve this
RSB [31]

Step-by-step explanation:

a) f(1) = -1 → x = -1

b) g(1) = Undefined

c) f(x) = 1 → x= Undefined

d) g(x) = 1 → x= 5

8 0
2 years ago
Baily is training to run a marathon. The number of minutes it takes to run the marathon after t weeks of training is M= 300(0.95
Whitepunk [10]

Answer:

300=initial time and 0.05 is the amount of time shaved off of the initial time to run the marathon

Step-by-step explanation:

3 0
3 years ago
I need help again i will mark brainliest
kykrilka [37]
1.false
2. true
3.true
4.false

Hope this helps!
5 0
3 years ago
Match each equation with its solution set.
taurus [48]

Answer:

1- The solution of I2x + 5I = 9 is {-7 , 2}

2- The solution of I2x + 7I + 2 = 11 is {-8 , 1}

3- The solution of I5 - xI = 6 is {-1 , 11}

4- The solution of I6x - 8I + 7 = 5 is ∅

5- The solution of Ix + 3I = 12 is {-15 , 9}

6- The solution of Ix - 3I = -12 is ∅

Step-by-step explanation:

* At first lets explain the meaning of IxI = a

- If IxI = a ⇒ then x = a or x = -a

- IxI never give a negative answer, because IxI means the

 magnitude of x is always positive

Ex: I-2I is 2

* Now lets find the solution of each equation

1- ∵ I2x + 5I = 9

∴ 2x + 5 = 9 ⇒ subtract 5 from both sides

∴ 2x = 4 ⇒ divide both sides by 2

∴ x = 2

OR

∴ 2x + 5 = -9 ⇒ subtract 5 from both sides

∴ 2x = -14 ⇒ divide both sides by 2

∴ x = -7

* The solution of I2x + 5I = 9 is {-7 , 2}

2- ∵ I2x + 7I + 2 = 11 ⇒ Subtract 2 from both sides

∴ I2x + 7I = 9

∴ 2x + 7 = 9 ⇒ subtract 7 from both sides

∴ 2x = 2 ⇒ divide both sides by 2

∴ x = 1

OR

∴ 2x + 7 = -9 ⇒ subtract 7 from both sides

∴ 2x = -16 ⇒ divide both sides by 2

∴ x = -8

* The solution of I2x + 7I + 2 = 11 is {-8 , 1}

3- ∵ I5 - xI = 6

∴ 5 -x = 6 ⇒ subtract 5 from both sides

∴ -x = 1 ⇒ divide both sides by -1

∴ x = -1

OR

∴ 5 -x = -6 ⇒ subtract 5 from both sides

∴ -x = -11 ⇒ divide both sides by -1

∴ x = 11

* The solution of I5 - xI = 6 is {-1 , 11}

4- ∵ I6x - 8I + 7 = 5 ⇒ Subtract 7 from both sides

∴ I6x - 8I = -2

- I  I never give negative answer

* The solution of I6x - 8I + 7 = 5 is ∅

5- ∵ Ix + 3I = 12

∴ x + 3 = 12 ⇒ subtract 3 from both sides

∴ x = 9

OR

∴ x + 3 = -12 ⇒ subtract 3 from both sides

∴ x = -15

* The solution of Ix + 3I = 12 is {-15 , 9}

6- ∵ Ix - 3I = -12

- I  I never give negative answer

* The solution of Ix - 3I = -12 is ∅

4 0
3 years ago
Other questions:
  • 13 POINTSS!! PLZ HELPP!! I WILL GIVE BRAINIEST
    8·2 answers
  • Tiles. Show your work<br>5. X+4= 4​
    15·1 answer
  • Marcus is 5 7/8 feet tall. Ben is 5 5/16 feet tall. Which of the two boys is taller? Justify your answer
    14·1 answer
  • The domain of the following relation R {(6, −2), (1, 2), (−3, −4), (−3, 2)} is
    6·1 answer
  • Can someone please help me with this?
    11·1 answer
  • Identify the like terms.
    6·1 answer
  • Enter an equation in the form of y = MX + b that represents the function described by the graph ​
    7·1 answer
  • What is the midpoint of the segment shown below? (-2,4) (6,-4)
    15·1 answer
  • 1) Find the value of these expressions:<br> a) (2x7)x5=<br> b) (8x3)x2=<br> c) 4x(3x8)=
    7·2 answers
  • PLEASE HELP ME ASAP ​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!