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
amm1812
3 years ago
13

Select the solution(s) of log2x=1−log(x+4).

Mathematics
1 answer:
mart [117]3 years ago
7 0

Step-by-step explanation:

log2x = 1 - log(x+4)

log2x = log10 - log(x+4)

log2x = log[10/(x+4)]

2x = 10/(x+4)

2x(x+4) = 10

2x² + 8x - 10 = 0

÷2 both sides of equation

x² + 4x - 5 = 0

(x+5)(x-1) = 0

x = -5, 1

x isn't be -5 because logA, A need to be > 0

So, x value is 1

You might be interested in
Find the measure of A.18<br> B.54<br> C.36
prisoha [69]

Answer:

[A] 18

Explanation:

[I'm assuming you want us to find the measure of ∠ABC]

∠ABC is a right angle, meaning ∠ABD and ∠DBC added together must equal 90°

2x° + 3x° = 90

2x + 3x = 5x

5x = 90

5x / 5 = 90 / 5

x = 18

7 0
3 years ago
Is this solution true <br> 2<br> — 36+h=8,when h=4<br> 6
Crazy boy [7]

Answer:

yes

Step-by-step explanation:

8 0
3 years ago
Please help!
Marat540 [252]

Answer: width = 82.50 m

Step-by-step explanation:

P = 2l x 2w

425 = 2(130) + 2w

425 - 260 = 2w

w = 165 / 2 = 82.50

5 0
3 years ago
All else being equal, a study with which of the following error ranges would be
denis-greek [22]

im pretty sure its option B

dont take my word for it

3 0
3 years ago
Read 2 more answers
Given thatP(5,4) Q(8,10) and R (X,18) are collinear. Find X
aleksley [76]

Answer:

x = 12.

Step-by-step explanation:

If P(5,4),Q(8,10) and R(x,18) are collinear

then the slope of PQ equals the slope of QR

hence:

(10 - 4)/(8 - 5) = (18 - 10)/(x - 8)

6/3= 8/(x - 8)

2 = 8/(x - 8)

multiplying both sides by (x - 8) gives:

2(x - 8) = 8

2x - 16 = 8

2x = 8 + 16 = 24

hence x = 12

8 0
3 years ago
Read 2 more answers
Other questions:
  • How much is 134×134=
    14·2 answers
  • Helppppppp plz god bless u 10 points
    8·1 answer
  • What is the value of 6/x + 2x^2, when x = 3?
    12·2 answers
  • Please help me!!!
    7·1 answer
  • You are playing poker and drawing 5 cards without replacement from a deck of card? What is the probability that you draw a hand
    6·1 answer
  • Convert .04 to percent
    8·2 answers
  • A square piece of fabric has side length 2.2 cm. Find the area of the piece of fabric.
    6·1 answer
  • How can you use the pythagorean theorem to solve real-world problems
    7·2 answers
  • Solve for v: w = v/r
    13·2 answers
  • Determine the perimeter of the figure shown, correct to decimal place.<br> HELP IS MUCH APPRECIATED!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!