What is change of base formula example?

Answers

Answer 1

Change of base formula is used to rewrite a logarithmic operation as a ratio of two logarithms each with the same base that is different from the base of the original logarithm, for example, log₆₄8 = log 8 / log 64.

Logarithm is the inverse function of an exponential. The logarithm of x is the exponent to which another fixed number, the base b, must be raised, to produce that number x.

Change of base formula is used to rewrite a logarithmic operation as a ratio of two logarithms each with the same base that is different from the base of the original logarithm. It can be written as follow:

[tex]Log_{b} a = \frac{Log_{d} a}{Log_{d} b}[/tex]

For example:

We want to find the value of log₆₄8 using the change of base formula.

log₆₄8 = log 8 / log 64

          = log 8 / log 8²

          = log 8 / 2 log 8

          = 1/2

Thus the log₆₄8 is 1/2

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Related Questions

Given the Function below and the three point domain of {-2, 1, 3}, what is the matching three point range?
F(x) = 2x + 4

Answers

Answer:

sorry need points

Step-by-step explanation:

can someone please help me find the value of y

Answers

Answer:

4y=48

y=48/4

y=12

therefore,the value of y is 12


An algebraic expression is given. Use the expression to answer the following questions,

a) How many terms are there in the algebraic expression?

b) What is the numerical coefficient of the first term?

c) What is the constant term?

d) Does the algebraic expression contain like terms? If so, what are the like terms?

X+ 3+ 7x
The

Answers

Answer:

A. 2

B.1

C.3

D. (should be x and 7x but that isnt an answer choice so) no

Step-by-step explanation:

For given expression x + 3 + 7x,

a) the number of terms in an algebraic expression = 2

b) the numerical coefficient of the first term = 1

c) the constant term = 3

d) the like terms are x and 7x

What is an algebraic expression?

"It is a mathematical expression that consists of variables, numbers and operations."

What is constant?

"It is a value or number that never changes in expression."

What are like terms?

"The like terms are defined as the terms that contain the same variable which is raised to the same power."

For given example,

We have been given an expression  x + 3 + 7x

a) x + 3 + 7x = 3 + (1 + 7)x

                    = 3 + 8x

So, the number of terms in the algebraic expression = 2

b) for given expression x + 3 + 7x,

the first term is x

x = (1) × (x)

the numerical coefficient of the first term is 1.

c) for given expression x + 3 + 7x,

the constant term = 3

d) for given expression x + 3 + 7x,

the like terms are x and 7x

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8. I NEED HELP ASAP!! PLEASE PUT AND ANSWER AND STEP BY STEP EQUATION!! IF YOU DON'T KNOW THE ANSWER DON'T PUT ANYTHING!!

Write a rule for the linear function in the table.


A. f(x) = 1/2x +1


B. f(x) = –2x – 1



C. f(x) = x + 5



D. f(x) = 2x + 1

Answers

Answer:

I DON'T KNOW THE ANSWER

Step-by-step explanation:

SORRY

3/8 (2x - 8 / 3x) = 21 solve for x
A -66
B -70
C -84
D -96

Answers

Answer:

d

Step-by-step explanation:

How many kids are there in the US

Answers

Answer:

74.2 million children under the age of 18

Step-by-step explanation:

Answer:

74•2 million kids are in the usa

pa help po need lang ipasa ngayon​

Answers

1.

[tex] \frac{3}{5} \times \frac{5}{6} = \frac{15}{30} = \frac{1}{2} [/tex]

2.

[tex] \frac{3}{5} \times \frac{3}{15} = \frac{9}{75} = \frac{3}{25} [/tex]

3.

[tex] \frac{5}{8} \times \frac{4}{10} = \frac{20}{80} = \frac{1}{4} [/tex]

4.

[tex] \frac{5}{12} \times \frac{3}{8} = \frac{15}{96} = \frac{5}{32} [/tex]

5.

[tex] \frac{12}{20} \times \frac{5}{6} = \frac{60}{120} = \frac{1}{2} [/tex]

6.

[tex] \frac{4}{5} \times \frac{8}{3} = \frac{32}{15} = 2 \frac{2}{15} [/tex]

7.

[tex] \frac{3}{8} \times \frac{16}{7} = \frac{6}{7} [/tex]

8.

[tex] \frac{11}{2} \times \frac{18}{7} = \frac{198}{14} =14 \frac{1}{7} [/tex]

9.

[tex] \frac{14}{6} \times \frac{18}{5} = \frac{252}{30} = 8 \frac{2}{5} [/tex]

10.

[tex] \frac{4}{3} \times \frac{5}{2} = \frac{20}{6} = 3 \frac{1}{3} [/tex]

Factorise fully
px + py​

Answers

Answer:

p(x+y)

Step-by-step explanation:

p(x+y)

hope that helps^^

12. (8x+15) + 45 + (18x+15) + 45

Answers

2 ( 13x + 60 ) or 26x + 120 is the correct answer
Yea that what I got so he’s right

6. Simplify the expression.
3n+5-12n-8+6p

Answers

Answer

-9n-3+6p

Step-by-step explanation:

Answer:

-9n - 3 + 6p

Step-by-step explanation:

You have to remember that you can add or subtract only LIKE terms. In other words, you can't add 3n + 5, so separate them.

In this equation: 3n + 5 - 12n - 8 + 6p,

1. 3n - 12n

2. 5 - 8

3. 6p

= -9n - 3 + 6p

Combine like terms

7k + 4(k + 4)

A.8k + 16

B.11k + 16

C.7k + 1k + 16

D.27k

Answers

Answer:

B. 11k + 16

Step-by-step explanation:

We have an expression and are asked to combine like terms.

To solve this, we need to first distribute 4(k + 4). Which is to multiply four by both k and 4.

(4(k) + 4(4))

4k + 16

7k + 4k + 16.

Since 7k and 4k are like terms since they end in the same variable, we can only add them.

7 + 4

11

11k + 16

What is the slope of the line that passes through the points (-2, 2), and (-4,-2)?
o
02

Answers

Answer:

2

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-2-2)/(-4-(-2))

m=-4/(-4+2)=-4/-2=2

A number cube is rolled 24 times and lands on 2 four times and on 6 three times.
Find the experimental probability of landing on a 2.
12

Answers

Answer:

1/6 times the number cube wil land on 2

Step-by-step explanation:

is y=x+3 a proportional relationship?

Answers

Answer: yes

Step-by-step explanation: im correcting my answer

Answer:

Yes

Step-by-step explanation:

The Ratio's Are Equivalent.

select all sets of side lengths that could form a triangle ​

Answers

8,8,8 is a triangle for sure

Solve for x. −9x+2>18 AND 13x+15≤−4

Answers

Answer:

-16/9

Step-by-step explanation:

School
PLEASE HELP WITH THIS QUESTION: One week Tony bought 6 soft shell tacos and 2 hard shell tacos for $12. The next week he bought 3 soft shell tacos and 1 hard shells tacos for $6. Write a system to find the cost for each type of taco. Explain your answer.

Answers

The soft shell tacos cost a dollar and the hard shell cost three dollars so in algorithm 3x2 equals 6 plus 6x1 equals 12 combined. So the hard shell cost 3$’s while the soft shell cost 3$’s

Is it true dat 2+2=5

Answers

Answer:

nah you tripping the answer is *22*.

Step-by-step explanation:

That's how I end up on harvard.

No it’s 4
Because
You have 2cars and you bought 2more it’s equal 4

Help with this please!

Answers

Answer:

47

Step-by-step explanation:

mean is found by dividing the sum of the terms by the number of terms:

(43+48+41+41+x)/5=44

173+x=220

x=220-172=47

The is answer is 47

Find the area of a square with sides of length 1/3 (fraction) yard.

Answers

Answer:

A. 1/3 sq yard

*sneezes cutely

Step-by-step explanation:

change your name

DO IT. DO IT NOW. Why arent you listenin-

in real life when do you think it would br helpful to know to calculate slope​

Answers

Answer:

When ur going down it

Step-by-step explanation:

Personally, I don’t. My grandma has never had to calculate slope in her entire life outside of school.

The slope of a line is -5 and its y-intercept is 8. Discuss how you will write the equation in the slope-intercept form

Answers

Step-by-step explanation:

slope-intercept form : y = mx + b

m = slope

b = y intercept

y = -5x +8

Please find what the value of x and y is!!!

Answers

Answer:

x = 3; y = 2

Step-by-step explanation:

You would just set each side equal to its opposite so for x, it'll be like:

4x+6=7x-3

and for y:

4y-3=3y+1

I attached my work below as well to help you.

Pleasssseeeee help its almost due

Answers

In A x=64 bc alternate interior angles are congruent and 128/2= 64. In B x=75 bc alternate exterior angles are also congruent and (151-1)/2 = 75. In C x=12 bc consecutive interior angles are supplementary. 7x+24+72=180 180-72-24=84 84/7=12

Can someone please help me with this question?

Answers

Answer:

110 degrees

Step-by-step explanation:

Ok so no matter what the shape is, the exterior angles always have to add up to 360 degrees. Then, you can make the equation:

140 + 110 + x = 360

250 + x = 360

x = 110 degrees

Here's another way you can do it:

To do this, you can start by noticing that the top angle would be 40 degrees, because there's a straight line with 140 degrees and that angle, so you can do 180 - 140 = 40 degrees.

Then, the angle towards the bottom right would be 70 degrees using the same strategy:

180 - 110 = 70 degrees

The interior angles of a triangle always have to add up to 180 degrees, so you can do 180 - 40 - 70 = 70 to find the third interior angle of the triangle.

The last step is to do 180 - 70 = 110 to find the measure of the exterior angle at that point.

find the missing measure ​

Answers

42 is the answerss to it

1 Calcula de la medio aritmética, la mediana
y la moda. Se analizó el IVA que se oplico
en diversos países europeos, a la compra de
obras de arte. Los resultados obtenidos
fueron los siguientes:
PAIS
España 0,16
Holia 0,20
Belgica 0,06
Holanda 0.06
Alemania 0,07
Portugal 0,17
Luxemburgo 0,06
Finlandia 0,22.​

Answers

Answer:

Step-by-step explanation:

orms of volunteering can be applied to the different roles that people take within ... volunteer motivations and looks to develop a typology of sports volunteers. ... diversity for their effectiveness as a policy tool and for government support. ... International Journal of Sport Policy and Politics 4, 2, 187–200 . ... text, however. For .

NOTE: Angles not necessarily drawn to scale.
X = ____ degrees

Answers

Answer:

x =60°

Step-by-step explanation:

GOOD QUESTION BRO

pls solve~~~~~~~~~~~~~~~~~~~~~~~~​

Answers

Answer:

q3

Step-by-step explanation:

P°×q3

=1×q3

=q3

11 quarts of soil are used to completely fill 5 flower pots. If each pot holds the same amount of soil, how many quarts will each pot hold?

Answers

11 divided among the 5
2 and 1/5
Or 2.2
Other Questions
Type or copy and paste your revised informational text draft in the student response box, then read it aloud. As you read, pause to edit the draft using standard English conventions. Remember to follow these editing strategies:Answer: Here is Sutton's edited biography of Alexander Fleming:It is extremely uncommon to come across someone who alters how others perceive the world. One such person was Alexander Fleming. Before 1928, when Fleming's smart and creative mind developed it, penicillin, a treatment for numerous infections, did not exist.As a young man, Fleming was very interested in the study of medicine. Under the direction of bacteriologist Almroth Wright, he started his research career in 1906 at St. Mary's Hospital in London, England. During World War I, Fleming dealt with injured troops while serving in the Royal Army Medical Corps. He discovered that the liquid antiseptics used to treat wounds had a significant negative impact on a person's capacity to combat bacterial infections. He therefore thought that wounds should be kept clean and dry rather than being treated with antiseptics. His suggestions were mainly ignored, though.Fleming came back to St. Mary's in 1918 and was appointed the department's assistant director. He made an astonishing finding regarding the bacteria Staphylococcus aureus, which can result in serious human infections, ten years later, in September 1928. Fleming discovered an unfamiliar mold had grown around the bacteria after leaving it unattended in a petri dish.He was startled to learn through studying the mold that it was a form of antibiotica compound that can either kill or stop the growth of germs. Penicillin was given a name by him, and word of its therapeutic efficacy in treating bacterial infections quickly spread. After that, he was successful in stabilizing and purifying penicillin for use by the general population with the aid of scientists from the University of Oxford, Howard Florey and Ernst Chain.Penicillin's discovery changed medicine and made Alexander Fleming a hero. He was chosen as a Fellow of the Royal Society in 1943, and a year later, he was knighted. For the discovery of penicillin and their contributions to medicine, Fleming, Chain, and Florey were given the Nobel Prize in 1945.Later in life, Sir Alexander Fleming published numerous publications in international medical and scientific journals on topics like immunology, chemotherapy, and bacteriology. Fleming passed away in London in 1955, but his legacy is still honored today. Spending plans are divided into three categories with roughly ______% of the after tax budget going to the category of needs and _____________ % of the after tax budget going to wants, with the rest going to esi. List the functions of water in the body. 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