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
Molodets [167]
3 years ago
15

Which equation has x=-6 as the solution? A-logx36=2. B-log3(2x-9)=3. C-log3 216=x. D-log3(-2x-3)=2

Mathematics
1 answer:
bezimeni [28]3 years ago
5 0
I posted this to your other question as well:

So we have:

A) \log_x(36)=2

B) \log_3(2x-9)=3

C) \log_3(216)=x

D) \log_3(-2x-3)=2

We need to try x = –6 in each equation until we find a solution that makes both sides of the equation equal.

For A, this gives an undefined result. Logarithms are only defined for bases that are positive real numbers not equal to 1.

For B, this again gives an undefined result. The logarithm of a number is only defined when that number is a positive real number. It would be –21, which is undefined.

For C, we have a defined operation, but \log_3(216)=4.893 \neq -6.

Finally, for D, we have 

\log_3(-2(-6)-3)=2\\ \log_3(9)=2 \\ 3^2=9 \\ 9=9

This is true.
You might be interested in
How to do angles like vertical and congruent
Talja [164]
The angles have to have a 90 degree angle , and they have to be equal too
3 0
3 years ago
Read 2 more answers
A bag of marbles consists of 14 blue marbles and 7 red marbles. If you reach into the bag and choose 2 marbles,
julsineya [31]

Answer:

chances are 10.5

Step-by-step explanation:

8 0
3 years ago
A baseball is hit into the​ air, and its height h in feet after t seconds is given by h(t)= -16t^2+128t+2. The height of the bas
tankabanditka [31]

Answer:

\large \boxed{\sf \ \text{2 feet, 4 seconds, 258 feet } \ }

Step-by-step explanation:

Hello,

To know the height of the baseball when it is hit we have to compute h(0), as t = 0 is when the baseball is hit into the air.

h(0)=-16\cdot 0^2+128 \cdot 0+2=2

So, the answer is <u>2 feet.</u>

<u />

h(x) is a parabola which can be written as ax^2+bx+c, it means that the vertex is the point (-b/2a,h(-b/2a)).

The baseball reached its maximum height after

   \dfrac{-b}{2a}=\dfrac{-128}{-2*16}=\boxed{4 \text{  seconds}}

And the maximum height of the baseball is h(4).

h(0)=-16\cdot 4^2+128 \cdot 4+2=-256+512+2=\boxed{258 \ \text{feet}}

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

8 0
3 years ago
There is approximately 3.3 x 10*8 people in the United States of America in 2018. The average person consumed about 3.4 x 10*2 m
ELEN [110]
(3.3 x 10^8) x (3.4 x 10^2) = 1.22 x 10^11
3 0
3 years ago
Connor borrows $8,000 at a rate of 19% interest per year. what is the amount due at the end of 7 years if the interest is compou
Mariana [72]

a$14,576

I t will be the answer.

5 0
3 years ago
Other questions:
  • a group of children share 11 3/7 vegetarian pizzas.each child receives 10/14 of a pizza. how many children are in the group
    14·1 answer
  • A right circular cylinder has a diameter of 16 mm and a height of 12 mm. what is the volume of the cylinder in terms of π?
    9·2 answers
  • I need help I’m not sure
    8·1 answer
  • 21 is what percent less than 35 ?
    14·1 answer
  • Round to the nearest thousandth. 4.8493
    15·2 answers
  • Solve x2 = 12x - 15 by completing the square. Which is the solution set of the equation?
    10·1 answer
  • I WILL GIVE U BRAINLY!!
    13·1 answer
  • Lines x and y are parallel and are cut by the transversal b. If the measure of angle 1 is 57°, what is the measure of angle 6? E
    14·1 answer
  • Helpppp plssssss and thxxx
    15·2 answers
  • What’s the answer and How do you do these
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!