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
Marina CMI [18]
3 years ago
8

If B is the midpoint of AC and AC=8x-20 find BC

Mathematics
2 answers:
Degger [83]3 years ago
5 0

we are given

B is the midpoint of AC

so,

AB=BC

AC=AB+BC

AC=BC+BC

AC=2BC

now, we are given

AC=8x-20

so, we can plug it

8x-20=2BC

we can divide both sides by 2

and we get

BC=4x-10.............Answer

Elza [17]3 years ago
3 0

We know that AC=8x-20 and B is the mid-point of AC

⇒ AB = BC = \frac{AC}{2}

⇒ BC = \frac{8x-20}{2}

⇒ BC = 4x-10


You might be interested in
Solve the equations if possible <br><br> * -5×=×+6(1-×)<br><br> *(2×-5)²=(2×-1)(2×+1)-10(2×-1)
Allushta [10]
-5x = x + 6(1-x)

-5x = x + 6(1) + 6(-x)
-5x = x + 6 -6x
-5x = x - 6x + 6
-5x = -5x + 6
-5x + 5x = 6
0 = 6  Not equal. No solution.

(2x-5)² = (2x-1)(2x+1) -10(2x-1)
(2x-5)(2x-5) = (2x-1)(2x+1) - 20x + 10
2x(2x-5)-5(2x-5) = 2x(2x+1)-1(2x+1) - 20x + 10
4x² - 10x -10x + 25 = 4x² + 2x - 2x -1 - 20x + 10
4x² - 20x + 25 = 4x² - 20x - 1 + 10
4x² - 20x + 25 = 4x² - 20x - 9

Not equal. No solution.

8 0
3 years ago
What is the equation for the line? Enter your answer in the box
Ipatiy [6.2K]

y=-1/2x-4

I could be wrong. Not my strong subject.

-Seth

4 0
3 years ago
Round your answer to two decimal places log 6e
Andru [333]

Solution: We know that e is numerical constant and is equal to 2.71828.

Therefore log( 6 x 2.71828) = 1.21

4 0
3 years ago
Round both numbers to find the answer-WRITE OUT THE NEW PROBLEM<br> 89 x 32
ankoles [38]

Answer:

2848

Step-by-step explanation:

89 x 32 = 2848

5 0
3 years ago
Read 2 more answers
A number squared increased by 5, is 41
Ksenya-84 [330]

Answer:

n² + 5 = 41          n = 6

Step-by-step explanation:

n² + 5 = 41

n² + 5 - 5 = 41 - 5

n² = 36

What squared equals 36? 6!

6² = 6 * 6 = 36

Check your answer!

6² + 5 = 41

36 + 5 = 41

41 = 41

Have a good night! :)


7 0
3 years ago
Other questions:
  • (10 points)4 5/6 + 9 5/9 =
    9·2 answers
  • Urgent help needed w/ right triangle trig
    8·1 answer
  • 3/7 x 28/9 x 15/17 ... how do I use cancellation? my answer was 15/17 but thats not the right answer, can someone explain this a
    14·1 answer
  • If 2&lt;=&lt;14, which two lines are parallel ?
    11·1 answer
  • The check issued on 2/24 was for $104.30. True or false ?
    5·1 answer
  • This is urgent plz question is below
    11·2 answers
  • If a race car averages 155 miles per hour for 4 hours, how far does the car travel?
    8·2 answers
  • Hi there, can anyone please help me? I need this soon. The question is: Tell whether the angles are adjacent or vertical then fi
    5·1 answer
  • Solve each inequality below using the Addition principle. Draw a graph of each solution set.
    6·1 answer
  • Nine students in Maddie's classroom are wearing red. There are
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!