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
aleksley [76]
3 years ago
14

B is the midpoint of AC and AC=8r-20,and AB=3x-1 Find BC

Mathematics
1 answer:
muminat3 years ago
6 0

Answer:

BC = 26

Step-by-step explanation:

since B is the midpoint of AC, then AB = BC

AC = 8x - 20 & AB = 3x - 1

AC = AB + BC or 2AB

8x - 20 = 2(3x - 1)

8x - 20 = 6x - 2

subtract 6x form each side

2x - 20 = -2

add 20 to each side

2x - 20 + 20 = -2 + 20

2x = 18

x = 9

BC = 3x - 1

BC = 27 - 1

BC = 26

AC = 52

You might be interested in
The coefficient of x in -7xy is -7​
Oksanka [162]

Answer:

True: the leading coefficient in the monomial is -7

Step-by-step explanation:

Math

5 0
3 years ago
What is the surface area of this square pyramid
My name is Ann [436]

Answer 144 ft2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Question 3 Unsaved
sashaice [31]
87.4 people per square mile
3 0
3 years ago
Read 2 more answers
Please solve and explain how. Photo attached
geniusboy [140]

Answer:

Step-by-step explanation:

\frac{2}{k^2-2k}=1-\frac{1}{k^2-2k}

multiply by \frac{k^2-2k}{1} on each side

2=k^2-2k-1

add 1 on both sides 3=k^2-2k

make it equal 0

0=k^2-2k-3

Factor

(k-3)(k+1)

answer is 3 and -1

7 0
3 years ago
$35,125 loan, a feat which took ten years of quarterly payments. The loan had an interest rate of 7.44%, compounded quarterly. I
Darya [45]
First find the amount of each payment:
35,125 = P(\frac{(1+i)^{40} -1}{i (1+i)^{40}}) , i = \frac{.0744}{4}  \\  \\ P = 1252.70

The total cost will be 40 payments plus service charges.
40*1252.70 + 5180.70 = 55,288.90

The percentage is the service charge divided by total cost:
X = \frac{5180.70}{ 55,288.90} = .0937 = 9.37\%
7 0
3 years ago
Other questions:
  • Math Help? 15 Points
    14·1 answer
  • 7th grade math help me plzzz
    10·1 answer
  • Which describes the relationship between the lines y=2x - 5 and y=2x +2?
    11·1 answer
  • The seventh-grade class is building target areas for a PE activity. The bases for the game will be in a circular shape. The diam
    6·2 answers
  • Help, please!!<br><br><br> How much is 2/5 of 20 ?
    5·2 answers
  • A factory purchased a machine for $35,000. The value of the machine depreciates at a rate of 10% each year. Complete the followi
    14·1 answer
  • Help me out please? <br> Thank you!
    5·1 answer
  • Triangle X Y Z is shown. The length of X Y is 9, the length of Y Z is 19, and the length of X Z is y. Angle X Y Z is 41 degrees.
    10·2 answers
  • Can someone answer this because this one is confusing and I need help.
    11·1 answer
  • Graycie and her 6 friends are using 293 beads to make bracelets. They share the beads evenly but some were left over. How many b
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!