Ciara solved the exponential equation 3x+1 = 15 and her work is shown below. What is the first step she did incorrectly? (3 points) Step 1: log 3x+1 = log15 Step 2: (x + 1)log 3 = log15 Step 3: log3 = log 15 over x plus 1 Step 4: 0.477121 = 1.176091 over x plus 1 Step 5: 0.477121(x + 1) = 1.176091 Step 6: x + 1 = 1.176091 over 0.477121 Step 7: x + 1 = 2.464975 Step 8: x = 1.464975

Answers

Answer 1
log3=log 15 over x+1 I think
Answer 2

Answer:

The Answer is Step 3. I took the test :)


Related Questions

Find the equation for the line that passes through the point (1, 3), and that is perpendicular to the line with the equation −3x − 4y = 13.

Answers

-3x - 4y = 13
-3 - 12 = 13
-15 = 13

What power do you raise a number to to get the square root of it?

Answers

Answer:  To get the "square root" of a number,  you can raise a number to the 
  "(1/2)" exponent.

A rectangle is 1/3 yards long and 2/3 yards wide. What is the area of the rectangle? Enter your answer in the box as a fraction in simplest form.

Answers

To find the area of a rectangle, multiply the length by the width. For a rectangle that is 1/3 yards long and 2/3 yards wide, the area is 2/9 square yards, which is the answer in simplest form.

The question asks us to calculate the area of a rectangle that is 1/3 yards long and 2/3 yards wide. The formula to compute the area of a rectangle is length  imes width.

First, multiply the length and the width:

Length: 1/3 yards

Width: 2/3 yards

Area = (1/3) times (2/3) yards sq

Area = 2/9 square yards

This is the simplest form of the fraction, so this is the final answer: The area of the rectangle is 2/9 square yards.

There are 20,000 owls in the wild. Every year the population decreases by 8%. How many owls will there be after 8 years?

Answers

After 8 years, there will be approximately 10,260 owls remaining in the wild. This calculation is based on an initial population of 20,000 owls decreasing by 8% annually, yielding a final population using the formula for exponential decay.

To find out how many owls will remain after 8 years, we can use the formula for exponential decay:

[tex]\[ \text{Final population} = \text{Initial population} \times (1 - \text{Rate of decrease})^{\text{Number of years}} \][/tex]

Given:

Initial population (P) = 20,000 owls

Rate of decrease (r) = 8% = 0.08

Number of years (t) = 8

Plugging in the values:

[tex]\[ \text{Final population} = 20,000 \times (1 - 0.08)^8 \][/tex]

[tex]\[ \text{Final population} = 20,000 \times (0.92)^8 \][/tex]

[tex]\[ \text{Final population} \approx 20,000 \times 0.513 \][/tex]

[tex]\[ \text{Final population} \approx 10,260 \][/tex]

So, after 8 years, there will be approximately 10,260 owls remaining in the wild.

What is the slope of the line 3x + 4y = -11?

answers:
3\4
-3\4
3
4

Answers

 you need to make it in the form of y=mx+b, and m will be the slope 
so... 
3x-4y=7 
subtract 3x from both sides 
-4y=-3x+7 
then divide both sides by -4 
y=(3/4)x-7/4 

so the slope is 3/4

Final answer:

To find the slope of the line given by 3x + 4y = -11, the equation is rearranged into the slope-intercept form, yielding a slope (m) of -3/4.

Explanation:

The question asks: What is the slope of the line 3x + 4y = -11?

To find the slope of the line, we first need to rearrange the equation into the slope-intercept form, which is y = mx + b, where m is the slope, and b is the y-intercept. Starting with the given equation

3x + 4y = -11

We isolate y on one side by first moving 3x to the right side of the equation, and then dividing everything by 4:

4y = -3x - 11y = (-3/4)x - 11/4

Now, in the form of y = mx + b, it's clear that the slope (m) of the line is -3/4.

Adventure Play sells an mp3 player for $18.00 and charges $3.25 per song. King Music sells a player for $23.00 and charges $2.00 per song. For how many songs will the cost be the same?

Answers

Answer: 4

Explanation:

Translate the english language to mathematical (algebraic) language.

This implies to define the variables and translates the statements into equations.

1) Adventure Play sells an mp3 player for $18.00 and charges $3.25 per song.

Cost = price of the mp3 player + price each song * number of songs

Variables:

number of songs: n
price each son: $3.25
price of the mp3 player: $ 18.00
Cost: c(n), this means that the cost is a function of n.

c(n) = 18 + 3.25n

2) King Music sells a player for $23.00 and charges $2.00 per song. For how many songs will the cost be the same?

Using the same procedure used for Adventure Play case:

c(n) = 23 + 2n

3) Equal cost =>

18 + 3.25n = 23 + 2n

=> 3.25n - 2n = 23 - 18
=> 1.25n = 5
=> n = 5 / 1.25
=> n = 4

Answer: the cost will be the same for 4 songs.

Answer:

4 songs

Step-by-step explanation:

The coordinates of triangle DEF are Upper D left parenthesis 3 comma 3 right parenthesis​, Upper E left parenthesis 8 comma 3 right parenthesis​, and Upper F left parenthesis 5 comma 7 right parenthesis. If you translate triangle DEF 2 units right and 3 units down​, what are the coordinates of Upper E​'?

Answers

The answer would be (10 , 5)

Which is one of the transformations applied to the graph of f(x) = x2 to change it into the graph of g(x) = 4x2 + 24x + 30?

The graph of f(x) = x2 is widened.
The graph of f(x) = x2 is shifted left 3 units.
The graph of f(x) = x2 is shifted up 30 units.
The graph of f(x) = x2 is reflected over the x-axis.

Answers

The graph is shifted left 3 units.

We know that the graph of f(x) is NOT widened, because for a number c greater than 1, cf(x) stretches the graph vertically, not horizontally. 

We know that the graph of f(x) is NOT shifted up 30 units. It is tempting to say this because we do see +30 as the last term. But, we have to calculate the vertex of g(x). If we find the point [tex]P( \frac{-b}{2a}, g(\frac{-b}{2a}))[/tex], that is, by taking doing [tex] \frac{-24}{2*4} = -3[/tex], [tex]g(-3)=-6[/tex], we see that the vertex is six units down from f(x), not 30 units up!

We know that the graph of f(x) is NOT reflected over the x-axis, because there would need to a negative coefficient on the [tex]x^2[/tex]-term, and there isn't.

We know that the graph of f(x) IS shifted 3 units to the left. When we calculated the vertex earlier, we saw that it is [tex](-3,6)[/tex], which indeed corresponds to a shift 3 units to the left from the origin.

The graph of f(x) = x2 is shifted left 3 units.


Lucy watched TV for 25 of an hour on Monday. She watched 79 of an hour on Tuesday. What day did she spend more time watching TV?

Answers

Hello there,

Lucy watched more TV on Tuesday.

This is because 1 hour = 60 minutes.

so, 25% of 60 min = 15 min on Monday

and, 79% of 60 min = 47.7 min rounded gives 48 minutes on Tuesday...

Hope this answer helps. Good luck.


What is general form of equation of a circle with center at (a,b) and radius of length m?

Answers

All points on a circle has the same distance (radius) to the center. Specifically, the distance from point (x,y)to center (a,b) is \sqrt((x-a)^2+(y-b^2)), which is equal to radius m. So \sqrt((x-a)^2+(y-b^2))=m. Square both sides, (x-a)^2+(y-b)^2=m^2.

The general form of the equation of a circle with centre at [tex]\((a, b)\)[/tex] and radius [tex]\(m\)[/tex] is: [tex]\[ x^2 + y^2 - 2ax - 2by + (a^2 + b^2 - m^2) = 0 \][/tex].

The general form of the equation of a circle is [tex]\( (x - h)^2 + (y - k)^2 = r^2 \)[/tex], where [tex]\((h, k)\)[/tex] represents the centre of the circle and [tex]\(r\)[/tex] represents the radius.

If we expand and rearrange this equation, we get [tex]\( x^2 + y^2 - 2hx - 2ky + (h^2 + k^2 - r^2) = 0 \)[/tex].

Comparing this with the given options, we see that [tex]\( h = a \), \( k = b \), and \( r = m \)[/tex].

Substituting these values into the general form, we get [tex]\( x^2 + y^2 - 2ax - 2by + (a^2 + b^2 - m^2) = 0 \)[/tex], which matches the correct option.

Complete Correct Question:

What is the general form of the equation of a circle with center at (a, b) and radius of length m?

a. x2 + y2 - 2ax - 2by + (a2 + b2 - m2) = 0.

b. x2 + y2 + 2ax + 2by + (a2 + b2 - m2) = 0.

c. x2 + y2 - 2ax - 2by + (a2 + b2 + m2) = 0.

d. x2 + y2 + 2ax + 2by + a2 + b2 = -m2.

The graph illustrates a reflection of abc . What line is abc reflected across to create a'b'c'?

Answers

triangle ABC is reflected over the y axis
the answer is : y-axis

A machine can produce 27 inches of ribbon in 3 minutes.how much ribbon can the machine produce in 1 hour produce in 1 hour?

Answers

540 it produce in a hour

He measure of one angle of an octagon is twice that of the other seven angles. what is the measure of each angle? answer: ,

Answers

Final answer:

The measure of one angle in an octagon is 135.625 degrees.

Explanation:

Let's denote the measure of one angle as x.

Since there are eight angles in an octagon,

the sum of all the angles in the octagon is 180(x) + 7(2x) = 180x + 14x = 194x.

We know that the sum of the angles in any polygon is equal to (n-2) times 180 degrees, where n is the number of sides of the polygon.

Therefore, 194x = (8-2) × 180. Solving this equation,

we find that x = 135.625. So, the measure of each angle is 135.625 degrees.

Learn more about Polygon angles here:

https://brainly.com/question/32997378

#SPJ12

given that (-8,- 7) in on the graph of f(x), find the corresponding point for the fuction f(x -4)

Answers

The point (x1,y1) on the graph of f(x) is the point (x1-a,y1) for the function
f(x+a)

(-8,-7)=(x1,y1)→x1=-8, y1=-7
f(x-4)=f(x+a)→a=-4

(x1-a, y1)=(-8-(-4), -7)=(-8+4, -7)=(-4,-7)

The corresponding point for the fuction f(x -4) is (-4,-7)

What is the solution to the equation 5x = 40?

Answers

To find X, we can divide 5 into 40.
40 divided by 5 is 8.
Now we can do 5 x 8. That is 40.

X=40

OR we can do it another way.
40 divided by 5 is 8.
Cross out 5 divided by 5.

Now we have 8. Still.
X is 8
Hello,

The answer is "x=8".

Reason

5x=40=40/5

40/5=8

x=8

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit

The line through (8, 0) with slope -3/4 in slope-intercept form

Answers

[tex]\bf \begin{array}{ccccccccc} &&x_1&&y_1\\ % (a,b) &&(~ 8 &,& 0~) \end{array} \\\\\\ % slope = m slope = m\implies -\cfrac{3}{4} \\\\\\ % point-slope intercept \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-0=-\cfrac{3}{4}(x-8) \implies y=-\cfrac{3}{4}x+6[/tex]

A 3500.00 $ principal earns 3% annual interest, Compounded semiannually after 20 years, what is the balance in the account

Answers

$4,713.99

Hope this helped!

What is the sum of the first 7 terms of the series −8+16−32+64−

Answers

Lets Get started :)

The terms given are 
- 8 , + 16 , - 32 , + 64

The formula for finding the sum of this geometric sequence is:

Sn = [tex] \frac{a1(r^n - 1)}{r -1} [/tex]
a₁ = first term of sequence = -8
r = common ration = -2
n = term of sum we need to find = 7

Sn = [tex] \frac{-8((-2)^7 - 1)}{-2-1} [/tex]
     = -344

There is also another way, by simply adding, but you cannot perform this when they ask for a larger terms sums

Each term are multiplied by - 2, so to find the rest of the terms, we multiply by - 2 

+ 64 x - 2 = - 128
- 128 x -2 = + 256
+256 x - 2 = - 512

( - 8 ) + ( 16 ) + ( - 32 ) + ( 64 ) + ( - 128 ) + ( 256 ) + ( - 512 ) (first 7 terms)
= -344
-8 + 16 + -32 + 64 + -128 + 256 + -512 (These are the first 7 terms) The total = -344

The yearly profit of a company in thousands of dollars is given by the finction P(x) =3000+1200-6x^2 where x is the amount in thousands the company spneds on advertising. Find the amount ,x, that the company has to spend to maxamize its profit

Answers

the maximum or minimum happens when x=-b/2a
x=-1200/[2*(-6)]=100


the maximum happens when x=100

Determine whether each triangle with sides of given lengths is a right triangle. Hint: Set a2+b2=c2a2+b2=c2 If One side is equal to the other, then it's a right triangle. It sides are not equal, then it's not a right triangle. a = 6 cm b= 8 cm c = 10 cm

answers yes or no

Answers

a = 6
b = 8
c = 10 will produce a rt angle triangle.

a^2 + b^2 = c^2
6^2 + 8^2 =? 10^2
36 + 64 = ? 100
100 = 100 so the answer is yes to this part.

How much water can be held by a cylindrical tank with a radius of 12 feet and a height of 30 feet?

Answers

Cylinder Volume   =   π • r² • height
Cylinder Volume   =   3.14159 * 12 * 12 * 30
Cylinder Volume   =   13,571.67 cubic feet

 



The perimeter of a rectangular outdoor patio is 60 ft. the length is 4 ft greater than the width. what are the dimensions of the patio? l w

Answers

The length of rectangular outdoor patio is 17 feet and the width is 13 feet.

Given that, the perimeter of a rectangular outdoor patio is 60 ft.

What is the perimeter of a rectangle?

The perimeter of a rectangle is the total distance of its outer boundary. It is twice the sum of its length and width and it is calculated with the help of the formula: Perimeter = 2(length + width).

Let the width of the rectangular outdoor patio be x.

Then, the length is 4 ft greater than the width = x+4

Now, perimeter = 2(x+x+4)

⇒ 2(2x+4) = 60

⇒ 4x+8=60

⇒ 4x=52

⇒ x=13

Length = x+4 = 17

Therefore, the length of rectangular outdoor patio is 17 feet and the width is 13 feet.

To learn more about the perimeter of a rectangle visit:

https://brainly.com/question/15287805.

#SPJ2

The base of a parallelogram is 24 inches longer than three times the height. The area of the parallelogram is 384 square inches. What is the height?

The height is x = ________ inches.

Answers

To find the height of the parallelogram, set up the equation (3x + 24) x = 384 using the formula for the area of a parallelogram. Solve the resulting quadratic equation to find that x, representing the height, is 8 inche

The student is trying to find the height of a parallelogram when the base is 24 inches longer than three times the height and the area is 384 square inches. Let the height of the parallelogram be represented by x inches. According to the problem, the base (b) is 3x + 24 inches. Using the formula Base x Height = Area of parallelogram, we can set up the equation:

(3x + 24) x= 384

Now solve for x using the distributive property:

3x^2 + 24x = 384

Next, set the equation to zero:

3x^2 + 24x - 384 = 0

Divide the entire equation by 3 to simplify:

x^2 + 8x - 128 = 0

Factor the quadratic equation:

(x + 16)(x - 8) = 0

Set each factor equal to zero:

x + 16 = 0 or x - 8 = 0

Since the height cannot be negative, x = 8 is the solution. Therefore, the height of the parallelogram is 8 inches.

Can someone help me...?

Answers

1. (x, y) = (7, -12)

2. x = 1, x = 2 are both solutions

please help understand this and get it done.

Answers

You have an odd number of minus signs in your problem statement. You need an odd number of minus signs in your answer.

The 1st, 3rd, and 5th selections are appropriate.

Two circle are inscribed inside squares. Write a function f in terms of the radius r that represents the area of the shaded region. Leave your answer in terms of π.

f(r)=___

Answers

The function [tex]f[/tex] in terms of the radius [tex]r[/tex] that represents the area of the shaded region is [tex]f(r) = 2\pi\cdot r^{2}[/tex].

The area of the shaded region is the sum of the areas of the two circles of same radius, each of them represented by the following formula:

[tex]A_{r} = \pi\cdot r^{2}[/tex] (1)

Where:

[tex]A_{r}[/tex] - Area of the circle.[tex]r[/tex] - Radius of the circle.

Then, the formula for the shaded area is:

[tex]f(r) = 2\cdot A_{r}[/tex]

[tex]f(r) = 2\pi\cdot r^{2}[/tex] (2)

The function [tex]f[/tex] in terms of the radius [tex]r[/tex] that represents the area of the shaded region is [tex]f(r) = 2\pi\cdot r^{2}[/tex]. [tex]\blacksquare[/tex]

Remark

The figure is missing and the statement present mistakes. Correct statement is shown below:

Two circle are inscribed inside squares. Write a function [tex]f[/tex] in terms of the radius [tex]r[/tex] that represents the area of the shaded region. Leave your answer in terms of π.

To learn more on areas, we kindly invite to check this verified question:  https://brainly.com/question/1631786

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is the number of 3-point questions and y is the number of 5-point questions, the system shown represents this situation. x + y = 24 3x + 5y = 100 What does the solution of this system indicate about the questions on the test? The test contains 4 three-point questions and 20 five-point questions. The test contains 10 three-point questions and 14 five-point questions. The test contains 14 three-point questions and 10 five-point questions. The test contains 20 three-point questions and 8 five-point questions.

Answers

We must solve the system in order to find an answer.
Let's solve the system of equations:
[tex]x + y = 24\\ 3x + 5y = 100[/tex]
Now let us multiply the first equation by -3:
[tex]x + y = 24/\cdot(-3)\\ 3x + 5y = 100\\ --------\\ -3x-3y=-72\\ 3x + 5y = 100 [/tex]
We add those two equations together( 3x-3x will cancel out):
[tex]-3x-3y=-72\\+ 3x + 5y = 100\\ --------(+)\\ 2y=28\\ y=14 [/tex]
Now we simply plug y=14 into any of the starting equations to find x:
[tex]x + y = 24\\ x+14=24\\ x=10[/tex]
The answer is B:
The test contains 10 three-point questions and 14 five-point questions.

The answer to your question is B :)

50 POINTS AND BRAINLIEST!!! QUICK

3. At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 m.

(a) Write and simplify an expression for the exact area of the sidewalk.
(b) Find the approximate area of the sidewalk. Use 3.14 to approximate π.

Answers

A)

R = outside radius
r = inside radius

equation: ( pi*R^2) - (pi*r^2)

B)
 3.14 x 11^2 - 3.14 x 9^2

379.94 - 254.34 = 125.6 square meters






A = pi r^2  pi 9^2 81pi  81 * 3.14 = 254.34   pi 11^2 = 121pi   121 * 3.14 =379.94
379.94 - 254.34 = 125.60 area of sidewalk

Hope it helps  

Find the angle with a tangent ratio of 0.9325

Answers

To find the angle with a given tangent, use the inverse tangent.  
Putting tan⁻¹ (0.9325) in the calculator gives us a value of 42.9995 ≈ 43°.  Double check by using the calculator for tan(43).  You get a value of 0.9325.

Answer:

B. 43

Step-by-step explanation:

Pls, answer!! I will mark the 1st person to answer correctly with work as brainliest for 20 points!

Answers

Lets get started ;)
 
[tex] 8\frac{1}{3} [/tex] = [tex] \frac{25}{3} [/tex]
[tex]2 \frac{1}{3} [/tex] = [tex] \frac{7}{3} [/tex]
8.1 = [tex] \frac{81}{10} [/tex]

(When you divide by a value/fraction, you can multiply by its reciprocal)

[tex] \frac{25}{3} [/tex] × [tex] \frac{1}{x} [/tex] = [tex] \frac{7}{3} [/tex] × [tex] \frac{10}{81} [/tex]

[tex] \frac{25}{3x} [/tex] = [tex] \frac{70}{243} [/tex]

We can cross multiply :)

25 × 243 = 3x × 70
6075 = 210x

We can divide by on either side to isolate x and thus find its value

[tex] \frac{6075}{210} [/tex] = [tex] \frac{210x}{210} [/tex]

210 and 210 cancels out on the right-hand side


[tex] \frac{405}{14} [/tex]  = x


Other Questions
Cross a parent that is homozygous recessive for both traits (bbee) with a dihybrid (BbEe). First, draw a Punnett square in your notes. For each offspring in the Punnett square, determine the phenotype. In other words, what are the fur color and eye color? Finally, use that information to fill in the predicted fraction of each phenotype in the data table below. Predict Results with Linked Genes Black Fur and Black EyesBlack Fur and Red EyesWhite Fur and Black EyesWhite Fur and Red Eyes Predicted Fraction /16 /16 /16 /16 What is the correct order of urine flow from its source to the outside of the body? Food handlers must remove all obects on their hands and wrists except a plain band or stainless steel watch The following is a saving and investing plan. Is it diversified? Deposit $1,000 in a basic savings account. Purchase a savings bond worth $200. Contribute on a regular basis to a mutual fund. In five years, start contributing on a regular basis to a retirement plan. yes no Why did the Supreme Court deem two policies of the First New Deal unconstitutional? The function C(x) = 17.5x - 10 represents the cost (in dollars) of buying x tickets to the orchestra with a $10 coupon.a. How much cost to buy 10 tickets?b. How many tickets can you buy with $130? What commentary does D. H. Lawrence make on the subject of greed in"The Rocking-Horse Winner"?A) Greed, when properly channeled, can lead to prosperity.B) Greed exists in conjunction with guilt.C) Greed can destroy.D) Greed is a necessary evil in families. Which part of the following CSS code would you edit in order to change the background color of the overall web page?body { color: #000000 background-color: #C9E1FF font-family: Arial, "Lucida Console", sans-serif} h1 { color: #114485 font-size: x-large font-family: Georgia, "Times New Roman", Times, serif; }A. background-color #C9E1FFB. body {C. color: #000000D. color: # 114485What extension do CSS files have?A. cssB. htmlC. .jsvD. .jvIn the following piece of CSS code, what is #ffffff called?body { color: #ffffff }A. propertyB. ruleC. selectorD. valueIn the following piece of CSS code, what is font-size called?h2 { font-size: small }A. propertyB. ruleC. selectorD. valueWhich of the following is true about CSS?A. A seperate CSS file is needed for each HTML file in a website.B. It is a language used to customize web pages based on user preferences.C. It is contained in a seperate file than HTML files.D. It is used to combine formatting information and content into one single file. A patient with allergic rhinitis is taking a compound product of loratadine/pseudoephedrine [claritin-d] every 12 hours. the patient complains of insomnia. the nurse notes that the patient is restless and anxious. the patient's heart rate is 90 beats per minute, and the blood pressure is 130/85 mm hg. the nurse will contact the provider to: A recycling bin is in the shape of a right rectangular prism. The bin is 12 meters long, 512 meters wide, and 612 meters tall. What is the volume of the recycling bin? 3534 m 360 m 429 m 51834 m Which geographic area of texas is not a republican stronghold? Which one of these client factors will generally have the greatest influence on your decorating plan? A. Age B. Lifestyle (I'd guess this one)C. OccupationD. Color Preference (1.3t3 + 0.4t2 24t) (0.6t2 + 8 18t)What is the additive inverse of the polynomial being subtracted? Los estudiantes tienen que ________ toda la escuela. llorar limpiar pasar contestar Find the simplified form of the expression. Give your answer in scientific notation. (4 x 10^10)(9 x 10^5) 3.6 x 10^4 3.6 x 10^49 36 x 10^5 3.6 x 10^6 and please explain Which continents have land in both the Eastern and Western Hemispheres? Check all that apply. Which continents have land in both the Eastern and Western Hemispheres? Check all that apply.North AmericaSouth AmericaAfricaEuropeAsiaAustraliaAntarctica Which of the four main sources of water contain salt water? contain fresh water? What physical property determines how warm It needs to be for ice to change to water find the surface area of a cube that has edges 4 inches long how was the purpose served by architecture and sculpture in the hellenistic period similar to the purpose served by these arts in the golden age of athens