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
Tanzania [10]
3 years ago
10

How many solutions does the following equation have? ln(x2 + 4x − 5) = 0

Mathematics
1 answer:
lisov135 [29]3 years ago
7 0
Alrighty
remember
log_a(b)=c means a^c=b
and
ln(x)=log_e(x)
and
x^0=1 for all real values of x
so

ln(x^2+4x-5)=0 means
log_e(x^2+4x-5)=0 means
e^0=x^2+4x-5 which simplifies to
1=x²+4x-5
minus 1 both sides
0=x²+4x-6
use quadratic formula or complete the square
x=-2+\sqrt{10} and x=-2-\sqrt{10}
2 solutions
You might be interested in
Help please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
SpyIntel [72]
Hang in there just a sec
4 0
3 years ago
-3 = 7 - BLANK pls tell me what blank is
liberstina [14]

Answer:

10

Step-by-step explanation:

-3 = 7 - x

Add x to both sides

x -3 = 7 - x +x

x - 3 = 7

Now, add 3 to both sides

x - 3 + 3 = 7 + 3

x = 10

4 0
3 years ago
Read 2 more answers
Need help on all these questions!!
Yuki888 [10]

Okay, so YZ = 3 cm.  You have XM correct. And YM = 0.5.

Now, you have the midpoint M at the correct spot.

Use Pythagorean's theorem o find the length of AB.  a² + b² = c²   a=6,  b=8.

6² = 36   8² = 64    36 + 64 = 100      AB = 10!

If AB = 10   then AM = 5    MB also = 5

If B is the midpoint of AC,  C would be 12 rows down from A, and 16 columns to the right. The last spot where the line intersects.

There are your answers!

5 0
3 years ago
Please help! (Answer and explanation, NO LINKS!)
blsea [12.9K]

Answer: primeter is 20

Area :

Step-by-step explanation:

Height : 4

Base : 6

Prim - 6+6+4+4=20

Area - 6x4=24

8 0
3 years ago
8 5x=-2 whats the value of the variable?
wlad13 [49]
In order to get the value of x you have to set x by itself subtract from both sides because the only way to get rid of a positve its with a negative now you have 5x=6, now divide 5 from both sides because the only way to get rid of a multiplication is with a division, this will give you the final answer of x=6/5

Hope this helps
8 0
3 years ago
Other questions:
  • A: 10x − 4y = 20 B: 8x + 6y = 14 Solve this system of equations using addition. Show all of your work. Also list the property th
    7·1 answer
  • 5 times 60 equals 5 times how many tens
    5·1 answer
  • If a humming bird beats its wings 200 times per minute and it beats for 3 minutes. How many beats will the humming bird have?
    13·2 answers
  • Can someone help? 15 points! :)
    15·1 answer
  • What is the third term of the sequence ? An=3•2^ (n-1)
    10·1 answer
  • During bowling practice, Marley rolled 14 strikes out of 70 attempts. What percent of Marley’s attempts were strikes?
    11·2 answers
  • HELP WITH THIS QUESTION ;/
    15·1 answer
  • A. Figure A
    10·2 answers
  • PLEASE HELP GIVING BRAINLIST TO THE CORRECT ANSWER IT'S DUE TOMORROW! D:
    7·2 answers
  • Multiply (Make sure to show work on a separate sheet of paper)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!