Solve each equation.
log (7 x+1)=log (x-2)+1

Answers

Answer 1

The value of x for log (7 x+1)=log (x-2)+1 is 7.

What is the importance of logarithmic function?

Due of their connection to exponential functions, logarithmic functions are crucial. Exponential equations and the characteristics of exponential functions may both be investigated using logarithms. Additionally, they will be of great service in calculus, where they will be used to determine the slope of specific functions and the region enclosed by particular curves. They also have useful uses in economics.

Given,

log (7 x+1)=log (x-2)+1

log(7x + 1) - log(x - 2) = 1

using log (m/n) = log m - log n

log (7x+1 / x-2) = 1

It can be expressed as -

7x + 1 / x - 2 = 10 ¹

7x + 1 = 10x - 20

3x = 21

x = 7

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Related Questions

PLEASE HELP!! 20 points

Answers

The transformations needed to sketch the graph of [tex]h(x) = \sqrt[3]{1 - x}[/tex] are described as follows:

Starting with the graph of the basic function [tex]y = \sqrt[3]{x}[/tex], horizontally shift the graph right one unit, and then reflected the graph about the x-axis.

What is a transformation in a function?

A transformation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s range(involving values of y) or in it’s domain(involving values of x).

Examples are shift left, shift right, shift down, shift up, vertical stretching, horizontal stretching, vertical compression, horizontal compression, reflection over the x-axis, reflection over the y-axis, and rotations by a determined amount(in degrees). All these translations have predetermined rules that we apply to the figures.

The parent cube root function is given by:

[tex]y = \sqrt[3]{x}[/tex]

To have x -> x - 1, we reflect the function over the y-axis, hence:

[tex]y = \sqrt[3]{-x}[/tex]

To have -x -> 1 - x, we shift it one unit right, hence:

[tex]h(x) = \sqrt[3]{1 - x}[/tex]

The order of the transformations can be reversed, i. e., shift right then reflection.

Thus the correct statement to sketch the graph is given by:

Starting with the graph of the basic function [tex]y = \sqrt[3]{x}[/tex], horizontally shift the graph right one unit, and then reflected the graph about the x-axis.

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A church has 475 members of the congregation. 32% of the congregation are senior citizens and 24% are children. work out the number of members from the congregation who are neither

Answers

32% of 475 = 152
24% of 475 = 114
Remaining = 475-152-114=209 is the amount who are neither

A business owner made a survey where he ask his customers150 what do they like the most between a fish and meat and he got this data 85 like meat 125 like fish 70 like both fish and meat 1 what is the probability for a customer to pick at least one item?

Answers

Taking into account the definition of probability, the probability for a customer to pick at least one item is 14/15.

Definition of Probabitity

Probability is the possibility that a phenomenon or an event will happen, given certain circumstances and it is expressed as a percentage.

The probability of any event A is defined as the ratio between the number of cases in which event A may or may not occur and the total number of possible cases. This is called Laplace's Law:

P(A)= number of favorable cases÷ total number of posible cases

Union of events

The union of events, AUB, is the event formed by all the elements of A and B. That is, the event is verified when one of the two, A or B, or both occurs and it is read as "A or B".

The probability of the union of two compatible events is calculated as the sum of their probabilities subtracting the probability of their intersection:

P(A∪B)= P(A) + P(B) -P(A∩B)

where the intersection of events, A∩B, is the event formed by all the elements that are, at the same time, from A and B.

Probability for a customer to pick at least one item

In first place, let's define the following events:

M: The event that a customer like meat.F: The event that a customer like fish.

So you know:

P(M)= 85÷150= 17/30P(F)= 125÷150= 5/6P(F and R)= P(F∩R)= 70÷150= 7/15

In this case, considering the definition of union of events, the probability for a customer to pick at least one item is calculated as:

P(M∪F)= P(M) + P(F) -P(M∩F)

P(M∪F)= 17/30 + 5/6 -7/15

P(M∪F)= 14/15

Finally, the probability for a customer to pick at least one item is 14/15.

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Let g(x)=3 x+2 and f(x)=x-2 / 3 . Find each value.
(f⁰f)(0)

Answers

A composite function exists as a function that depends on another function. The value for  (f⁰f)(0) = - 4/3

What is meant by composition function?

In mathematics, function composition exists as an operation ∘ that takes two functions f and g, and has a function h = g ∘ f such that h(x) = g. In this operation, the function g exists used to the result of applying the function f to x.

Function composition is a mathematical procedure where two functions, f, and g, are taken and a function, h = g ∘ f, is produced such that h(x) = g(f(x)). The function g exists used in this operation on the outcome of applying the function f to x.

Let the two functions be g(x) = 3x + 2 and f(x) = x - 2/3

Now, (f⁰f)(x) = f[f(x)]

f(x) = x - 2/3

(f⁰f)(x) = f( x - 2/3)

simplifying the above equation, we get

(f⁰f)(x) = (x - 2/3) - 2/3  

(f⁰f)(0) = - 2/3 - 2/3

(f⁰f)(0) = - 4/3

Therefore, the value of (f⁰f)(0) = - 4/3.

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A wet bicycle tire leaves a trace of water on the floor. The tire has a radius of 30 \text{ cm}30 cm30, start text, space, c, m, end text, and the bicycle wheel makes 333 full rotations before stopping.
How long is the trace of water left on the floor?
Round your answer to the nearest \text{cm}cmstart text, c, m, end text

Answers

The trace of water left on the floor is the circumference of 565.2 cm.

Water traces are seen on the floor from a wet bicycle tire.

The bicycle wheel makes three complete rotations before coming to a stop, circumference  and the tire has a radius of 30 cm.

The circle of the cycle is indicated by the water stain left on the floor.

Given the radius = 30 cm

So,

C = 2 × 3.14 × 30

C = 188.4

Given that a bicycle wheel turns three times before pausing to pick up a trace of water, the answer is,

3 x 188.4 = 565.2 cm

the floor has a 565.2 centimeter trace of water.

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What is an equation in point slope form that passes through (8,2) and has a slope of -5

Answers

Answer:

y-2 = -5(x-8)

Step-by-step explanation:

y-y₁=m(x-x₁)

Ayuda es urgente : pls ayuda me ayudarían mucho

Answers

Answer:

$29.40

Step-by-step explanation:

please check this
choose the expression that is equivalent to (6^-3/3^-2x6^2) to the third
a) 3^6/6^15 (this was my answer)
b) 3^2/6^5
c)-3^6/6^15
d)-3^2/6^5

Answers

The exponential expression [tex]6^{-3}[/tex]/ [tex]3^{-2}[/tex] * 6² is equivalent to the exponential expression is 3² / [tex]6^{5}[/tex] which is option 2 and not option 1

The Exponential expression given to us is 6^-3/3^-2x6^2 or we can write it as

[tex]6^{-3}[/tex]/ [tex]3^{-2}[/tex] * 6²

There is a rule for solving exponents that when we reciprocate the fractions with exponential powers the signs of powers get changed from negative to positive and positive to negative

for example

[tex]x^{-2}[/tex] is written as [tex]\frac{1}{x^{2} }[/tex]

So, we can write the above  exponential expression as

3² / 6³ × 6²

Also, when two same numbers with different powers then the base remains same and powers get added.

3² / [tex]6^{3+5}[/tex]

3² / [tex]6^{5}[/tex]

So, the exponential expression [tex]6^{-3}[/tex]/ [tex]3^{-2}[/tex] * 6² is equivalent to the exponential expression is 3² / [tex]6^{5}[/tex] which is option 2 and not option 1

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what is the multiplicative inverse 23

Answers

Answer: 1/23

Step-by-step explanation:

x=multiplicative inverse of 23

23*x=1

23x=1

23x/23=1/23

x=1/23

At the bookstore, used hardcover books sell for $8 each and used softcover
books sell for $2 each. You purchase 26 used books and spend $64. How
many softcover books do you buy?

Answers

Answer:The answer to your question is

I bought

12

hardcover books and

24

softcover books.

Explanation:

We shall represent the hardcover books purchased by

x

and the softcover books purchased by

y

. From the details we can write two equations:

x

+

y

=

36

8

x

+

2

y

=

144

From the first equation we can calculate the value of

y

.

x

+

y

=

36

Subtract

x

from each side.

y

=

36

x

Now, in the second equation, substitute

y

with

(

36

x

)

.

8

x

+

2

y

=

144

8

x

+

2

(

36

x

)

=

144

Open the brackets and simplify.

8

x

+

72

2

x

=

144

6

x

+

72

=

144

Subtract

72

from both sides.

6

x

=

72

Divide both sides by

6

.

x

=

12

Now in the first equation, substitute

x

with

12

.

x

+

y

=

36

12

+

y

=

36

Subtract

12

from both sides.

y

=

24

Step-by-step explanation:

Hope I helped!Dont forget to hit that Brainliest button for me!If I really helped you.

alex wrote checks on tuesday for 30$ and 35$. He also made a deposit in his checking account of 185 . Find the overall change in the amount in his checking account

Answers

Answer:

He would have $100 in his bank account from the information provided

Step-by-step explanation:


In a bake sale, you recorded the number of muffins sold and the amount of sales in a table as shown.

a. What is a function that relates the sales and the number of muffins?

Answers

The function that relates the sales and the number of muffins is :

S = 2.5 m

What is the sales amount ?

The sales amount can be find by the total sales. That is , if there are n products to sell and selling amount is x rs. then we can easily find the total sales by multiplying them and by this total sales we can easily find the number of items sold per units and vice versa.

In the question given,

amount (A) = $ 250.00

Now take any of two values from table ,

Choose any two points and calculate the slope:

slope = [tex]\frac{50 - 20}{20 - 8}[/tex] =  2.5

thus, y = 2.5x

Hence we can say the function that relates the sales and the number of muffins is :

S = 2.5 m

where, S = sales amount

           m = number of muffins to be sell

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The complete question is:

In a bake sale, you recorded the number of muffins sold and the amount of sales in a table as shown.

a. What is a function that relates the sales and the number of muffins?

b. How many muffins would you have to sell to make at least $ 250.00 in sales?

which option?
pls help giving brainliest answers!! :)

Answers

Answer: D y=4x   3=4y+x

Step-by-step explanation:

[tex]y=4x\ \ \ \ m=4\\\\3=4y+x\\3-x=4y+x-x\\3-x=4y\\-x+3=4y[/tex]

Divide both parts of the equation by 4:

[tex]\displaystyle\\-\frac{x}{4} +\frac{3}{4}=y \\\\-\frac{1}{4} x+0.75=y\\\\y=-\frac{1}{4} x+0.75\ \ \ \ m_{\perp}=-\frac{1}{m}=-\frac{1}{4}[/tex]

Write -8<=x<=8 as an absolute value inequality

Answers

Answer:

2x>8

Step-by-step explanation:

this should be right

Convert 9 feet to meters

Round your answer to the nearest tenth.

(……..) meters

Answers

Answer:

2.7432 meters ≈ 2.7 meters.

Step-by-step explanation:

Convert 9 feet into meters:

9 feet= 2.7432 meters

Round 2.7432 meters:

2.7432 ≈ 2.7.answer is 2.7 meters.

Select all possible combinations of swimming and biking times that meet both the distance and the time constraints in this situation.


0.2 hours of swimming and 1.3 hours of biking

1.5 hours of swimming and 0.5 hours of biking

0.5 hours of swimming and 1.5 hours of biking

1 hour of swimming and 1 hour of biking

0 hours of swimming and 2 hours of biking

Answers

Answer:

Step-by-step explanation:

It’s the 3rd and last one 0.5 swim and 1.5 bike and 0 hours swim and 2 bike

I’ve done the test

A hand held music player was marked down by 1/4 of the original price. If the sales price is $128.00, what is the original price?

Answers

Answer:

A) The original price of music player is $170.66

B) If the item was marked up by 1/2 before it was placed on the sales floor, what was that the store paid for the digital player.?

Step-by-step explanation:

A)you would divide $128 by 4, getting $32. then add that to the original price, being $160.

B) you would divide $160 by 2, getting $80, then add those two together in order to find what it was marked up to, being $240. hopefully this helps

What is the value of the expression 5(2to the power of 3 -)?. Show your work

Answers

The value of the expression,  5([tex]2^{-3}[/tex]) is expressed as: 5/8.

How to Find the Value of an Expression?

We are given the expression, 5([tex]2^{-3}[/tex]), to find the value of the expression, the steps explained below should be taken.

5([tex]2^{-3}[/tex]) [given expression]

Apply the negative exponents rule to evaluate the exponent in the expression

5([tex]2^{-3}[/tex]) = 5(1/2³)

5([tex]2^{-3}[/tex]) = 5/2³

Solve the exponent to eliminate the power of minus 3

5([tex]2^{-3}[/tex]) = 5/(2 × 2 × 2)

5([tex]2^{-3}[/tex]) = 5/8

Thus, the value of the expression,  5([tex]2^{-3}[/tex]) is expressed as: 5/8.

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Ryan and Aqil had 352 stickers altogether. After Ryan lost 25% of his stickers, the ratio of Ryan's stickers to Aqil's stickers was 9:4. How many stickers did Aqil have?​

Answers

Aqil have 88 stickers.

Let Ryan have x stickers initially. Then Aqil will have (352-x) stickers. Ryan lost 25% of his stickers i.e., x-(25% of x)

= x- 25x/100

= x-x/4

= 3x/4

After Ryan lost 25% of his stickers, the ratio of Ryan's stickers to Aqil's stickers was 9:4 i.e.,

3x/4 : (352-x) = 9 : 4

⇒ 3x/4/(352-x) = 9/4

⇒3x/4 x 4 = 9 x (352-x)

⇒3x = 3168-9x

⇒3x+9x = 3168

⇒12x = 3168

⇒x = 3168/12

⇒x = 264

∴ Ryan have 264 stickers of the total 352 stickers and Aqil will have (352-x) i.e., 88 stickers.

Hence, Aqil have 88 stickers out of the 352 stickers.

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write the equation for a line perpendicular to y = 3x - 2

Answers

The equation of the line is y = -(1/3)x + 5,

What is an equation of a line?

The equation of a line is an algebraic form of representing the set of points, which together form a line in a coordinate system.

We have,

The line is perpendicular to y = 3x - 2 and passes through (3, 4).

The slope of the line and the slope of y = 3x - 2 is:

[tex]m_{1} m_{2}[/tex] = -1

Where [tex]m_{2}[/tex] = 3

[tex]m_{1}[/tex] = -1/3

The equation for the line that passes (3, 4) is given by:

y - 4 = -1/3 ( x - 3)

y = -1/3x + 1 + 4

y = -(1/3)x + 5

Thus the equation of the line is y = -(1/3)x + 5,

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The complete question is:

What is the equation of the line perpendicular to y = 3x − 2  and passes through point (3,4)?

Pls help I’ll mark u brainlest asap and extra points for the correct answer

Answers

This step should be 25 - 4 = 1

Answer:

Step-by-step explanation: the five was never in bracket and -2 times 2 = -4

(5)^2 -2(5-3)

=(5)^2  -2(2)

=25  -2(2)

25 (-4)

-100

A laptop comes without any programs installed on it. Each program costs $ 20 and the laptop you want costs $ 319 . What is the greatest number of programs you can buy if you want to spend at most $ 500 for the laptop?

Answers

We can buy 9 programs after buying the laptop if we want to spend $ 500 at most on the laptop.

The cost of the laptop = $ 319

The maximum money we have = $ 500

Money left after purchasing the laptop will be calculated by using subtraction.

Money left = $ 500 - $ 319 = $ 181

Now, cost of each program = $ 20

The number of programs we can buy = $ 181 / $ 20

The number of programs we can buy = 9.05

That means 9 programs.

Therefore, we get that, we can buy 9 programs after buying the laptop if we want to spend $ 500 at most on the laptop.

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Which equation is equivalent to the formula below?​

Answers

good luck buddy rip if you dont get the question

whats the formula for finding the area

Answers

Length•Width= Area
Hope this helps!

Answer:

square = width*height,

circle=pi*r^2

triangle = w * h * 0.5

Step-by-step explanation:

square = width*height,

circle=pi*r^2

triangle = w * h * 0.5

Please help me I need help

Answers

Answer:

14

Step-by-step explanation:

To solve [tex]\frac{ab^2-4}{10}[/tex]

We need to know what [tex]ab^2[/tex] is.

[tex]ab^2 = a*b^2 = 4 * 6^2 = 4*36 = 144[/tex]

[tex]\frac{144-4}{10} = 140/10 =14[/tex]

Hope this helps :)

Have a great day!

Can someone just solve pls

Answers

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(10,8)

Equation Form:

x=10,y=8

Step-by-step explanation:

need Help with this plsss

Answers

The linear equation in slope intercept form is y = -2x + 1

What are linear equations?

Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient

How to determine the linear equation?

The table represents the given parameters

On the table, we have the following points

(x, y) = (0, 1) and (1, -1)

A linear equation is represented as

y = mx + c

Substitute (x, y) = (0, 1) and (1, -1) in y = mx + c

So, we have

1 = 0 * m + c

-1 = 1 * m + c

This gives

1 = c

-1 =m + c

Rewrite 1 = c as

c = 1

Substitute c = 1 in -1 =m + c

-1 =m + 1

Evaluate

m = -2

Substitute m = -2 and c = 1 in y = mx + c

y = -2x + 1

Hence, the linear equation in slope intercept form is y = -2x + 1

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Polygon AVC’s slides 4 units left and 3 units up on the coordinate plane. If the original measure of angle A was 75 degrees, what I’d the measure of angle A’?

Answers

The angle of A when the polygon slides 4 units left and 3 units up on the coordinate plane is 75°.

How to calculate the angle?

From the information, Polygon AVC’s slides 4 units left and 3 units up on the coordinate plane. If the original measure of angle A was 75 degrees.

It should be noted that translation doesn't change the angle. Therefore, the number will be the same as the translation is stationary.

Therefore, the angle of A when the polygon slides 4 units left and 3 units up on the coordinate plane is 75°

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SAP PLEASE HELP IF RIGHT ANSWER WILL GIVE BRAINLIEST, 15 POINTS, AND 5 STAR OVERALL!!!! IF WRONG ANSWER OR INVALID WILL REPORT, PLEASE, PLEASE, PLEASE!!

Answers

The only graph that has a slope of -¹/₃ and a y-intercept of -4 that represents the inequality y > -¹/₃x - 4 is the graph represented by option C.

How to Interpret Inequality Graphs?

We want to find the graph that represents the inequality;

y > -¹/₃x - 4

Now, the general form of equation for a linear equation is;

y = mx + c

where;

m is slope

c is y-intercept

Now since the inequality is greater than, it means that it must be shaded at the top and must be a broken or dashed line. Thus, the only graph that has a slope of -¹/₃ and a y-intercept of -4 is the graph represented by option C.

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If the number represented by n-3 is an odd number, which expression represents the next
greater odd integer

Answers

n-2 is the next larger odd integer if the number represented by n-3 is an odd number.

An odd integer is... what?

Parity, in mathematics, is the characteristic of an integer that determines whether it is even or odd. If an integer is a multiple of two, it is even; otherwise, it is odd. For instance, 4, 0, and 82 are even. 3, 5, 7, and 21 are odd numbers in comparison.

Whole numbers that cannot be divided perfectly into pairs are referred to as odd numbers. When two is divided by an odd number, one is left over.

based on the available facts;

Formulate based on the conditions stated:

(n-3)+1

Rearrange and group related terms:

n+(-3+1)

Calculate the sum or difference:

n-2

Answer is n-2

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