Answer:
[tex]f^{-1}(x) = log_{12}(y)[/tex]
Step-by-step explanation:
We have the following function
y = 12^x, and we need to find the inverse function.
To find the inverse function we should solve the equation for "x". To do so, first, we need to:
1. Take the logarithm in both sides of the equation:
lg_12 (y) = log _12 (12^x)
(Please read lg_12 as: "Logarithm with base 12")
From property of logarithm, we know that lg (a^b) = b*log(a)
Then:
lg_12 (y) = x*log _12 (12)
We also know that log _12 (12) = 1
Then:
x = log_12(y).
Then, the inverse of: y= 12^x is:
[tex]f^{-1}(x) = log_{12}(y)[/tex]
You are going to a 4-year college in 4 years that will cost $14,895.00/yr. Your parents expect you to pay 5% of the total cost.
How much do you need to pay for each year of attending?
If you want to save your total contribution for all four years before you start attending college, how much do you need to save each month if you have four years to accomplish your goal?
Answer:
If my parents are going to pay the 5%, then, they will pay: $2979.
I will need to save $62.06 each month to accomplish my goal.
Step-by-step explanation:
I'm going to a 4-year college that will cost $14895/year.
It means that I will need to pay: 14895*4 = $59.580
If my parents are going to pay the 5%, then, they will pay: $2979.
Now, if I want to save my total contribution for all four years, and I have four years to accomplish the goal, then:
Then, if I have 4 years to pay it. It means I have 4*12 = 48 months.
Then I will need to save $2979./48 = $62.06 each month to accomplish my goal.
The student needs to pay $744.75 yearly, which is 5% of the annual college cost. To save this amount over four years, they need to save $62.06 each month for 48 months.
Explanation:The student needs to calculate their contribution to the college expenses. First, we need to find 5% of the annual cost of $14,895.00 to determine the student's yearly contribution:
Yearly Contribution = $14,895.00 * 0.05 = $744.75 per year.
Next, to calculate the total contribution over four years:
Total Contribution = 4 * $744.75 = $2,979.00.
To save the total amount in four years, we divide the total contribution by the number of months in four years (48 months):
Monthly Savings = $2,979.00 / 48 = $62.06.
Therefore, the student needs to save $62.06 each month for 48 months to cover their share of college expenses.
Solve this system of linear equation.Separate the x- and y-values with comma. -6x=-4-y -7x=-22+y
Answer:
(x,y)=(2,8)
Step-by-step explanation:
-6x = -4 -y
-7x = -22 +y
Rearranging the above equations
-6x +y +4 =0 => eq(1)
-7x -y +22 =0 => eq(2)
Adding eq(1) and eq(2)
-6x +y +4 =0
-7x -y +22 =0
___________
-13 x +26 =0
-13x = - 26
x= -26/-13
x= 2
Putting value of x in eq (1)
-6(2) + y +4 =0
-12 +y+4 =0
y-8=0
y=8
So, values of x and y are 2 and 8
(x,y)=(2,8)
The price of a gallon of unleaded gas has risen to $2.85 today.Yesterday's price was $2.79 Find the percentage increase. Round your answer to the nearest tenth of a percent.
Answer:
Step-by-step explanation:
Percent decrease =
(difference in prices)/(original price) × 100
(2.89 - 2.82)/2.89 × 100
= (0.07)/2.89 ×100 ≈ 2.4%
The price of unleaded gas has increased by 2.2% from yesterday to today. This percentage was calculated by finding the price increase ($0.06), dividing it by yesterday’s price ($2.79), and multiplying by 100. The result was then rounded to the nearest tenth of a percent.
Explanation:To find the percentage increase in the price of a gallon of unleaded gas, you first need to find the difference in the price. In this case, today's price is $2.85 and yesterday's price was $2.79, so the difference is $2.85 - $2.79 = $0.06.
Then, to find the percentage increase, you divide this difference by the original price (which is yesterday's price) and multiply by 100 to turn it into a percentage. So, percentage increase = ($0.06 / $2.79) * 100 = 2.15053.
Finally, you round this to the nearest tenth of a percent, which gives you 2.2%. So, the price of unleaded gas has increased by 2.2% from yesterday to today.
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About what percent of the village women took between 48 and 56 minutes to collect one container of water
Answer:
50%
Step-by-step explanation
Each quartile of a box plot contains 25% of the data.
45-48 minutes is 25%
48-53 minutes is 25%
53-56 minutes is 25%
56-64 minutes is 25%
The questions asks for the percentage from 48-56.
48-53 is 25% and 53-56 is 25%. If you add 25% + 25%, you get 50%
Therefore, the percentage of village women who took 48-56 minutes to collect one container of water if 50%.
Hope this helps!
which one is it? I would really appreciate some help.
Answer:
$7.50
Step-by-step explanation:
$2,760 is the total. 368 visited and paid the same price.
You'll need to divide 2760 by 368.
2760/368 = 7.5
$7.50 is the answer. Please mark brainliest.
Factorise x^2/4-y^2/4
Answer:
[tex]\large\boxed{\left(\dfrac{x}{2}-\dfrac{y}{2}\right)\left(\dfrac{x}{2}+\dfrac{y}{2}\right)=\dfrac{x-y}{2}\cdot\dfrac{x+y}{2}}[/tex]
Step-by-step explanation:
[tex]\dfrac{x^2}{4}-\dfrac{y^2}{4}=\dfrac{x^2}{2^2}-\dfrac{y^2}{2^2}\qquad\text{use}\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\=\left(\dfrac{x}{2}\right)^2-\left(\dfrac{y}{2}\right)^2\qquad\text{use}\ (a-b)(a+b)=a^2-b^2\\\\=\left(\dfrac{x}{2}-\dfrac{y}{2}\right)\left(\dfrac{x}{2}+\dfrac{y}{2}\right)=\dfrac{x-y}{2}\cdot\dfrac{x+y}{2}[/tex]
The average cost to produce a booklet at a printing company is given by the equation C(X)= 2x/x-1 where x is the number of booklets produced. Graph this relationship and describe what the expected cost of producing a booklet approaches as many booklets are printed.
Answer:
C(x) = 2
Step-by-step explanation:
The graph of the average cost is shown in the attached image.
Note that, as is to be expected, when the number of booklets produced x increases, then the average cost per booklet decreases.
To calculate the expected cost of producing a booklet when x is very large, look at the graph.
Note that when x = 2 then the average cost is equal to 4, then when x = 5 the average cost is 2.5.
In this way, the bigger x is made, the more the cost approaches 2.
Therefore it can be said that
[tex]\lim_{x \to \infty}C(x)= 2[/tex]
Finally, the expected average cost when the number of booklet produced is very large is C (x) = 2
Given: 3x < -6.
Choose the solution set.
{x | x < -2}
{x | x > -2}
{x | x < 2}
{x | x > 2}
Answer: FIRST OPTION.
Step-by-step explanation:
To know which is the solution set given the inequality [tex]3x < -6[/tex] you need to solve for the variable "x".
You must divide both sides by 3:
[tex]3x < -6\\\\\frac{3x}{3}=\frac{-6}{3}[/tex]
Therefore, you get:
[tex]x<-2[/tex]
Then, the solution set is the following:
{[tex]x | x < -2[/tex]}
You can observe that this solution set matches with the first option.
Answer: First option
Step-by-step explanation:
9/18 ÷3/6 =
Worth 85 pts
To divide fractions you flip the second fractions and multiply.
9/18 divided by 3/6 becomes -> 9/18 x 6/3
9 x 6 -> 54
18 x 3-> 54
your answer would simplify to 1.
Answer: 1
Step-by-step explanation: 9/18 =0.5 or one half, and 3/6=0.5 or one half, and one half divided by one half equals one 1/2 / 1/2 = 1
You buy two ads in a newspaper. One ad takes up
5
8
58
of a page, and the other ad takes up
1
8
18
of a page. How much space did you buy for ads?
The total space bought for the two ads in the newspaper is 3/4 of a page. This is determined by adding the fractions representing the size of each ad together: 5/8 + 1/8 = 6/8, which simplifies to 3/4.
Explanation:You are dealing with fractions in this mathematics problem. If you bought two ads, one taking 5/8 of a page and the other taking 1/8 of a page, you need to add these fractions together to find out how much space you bought for ads overall.
Adding the fractions 5/8 and 1/8 would give you:
5/8 + 1/8 = 6/8
The fraction 6/8 can be simplified further by dividing both numbers by their greatest common divisor (which is 2), resulting in:
6/8 = 3/4
Therefore, the ads took up 3/4 of a page in total.
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you bought a total of 3/4 of a page for ads.
To calculate the total space bought for ads in a newspaper, simply add the proportions of the page that each ad takes up. The first ad covers 5/8 of a page, while the second ad occupies 1/8 of a page. Adding these together:
5/8 + 1/8 of a page
This can be calculated by adding the numerators and keeping the denominator the same since both fractions have the same denominator.
Add the numerators: 5 + 1 = 6
Keep the denominator the same: 8
Combine them to get the new fraction: 6/8 of a page
However, notice that 6/8 can be simplified to 3/4, because both the numerator and the denominator can be divided by 2.
Therefore, you bought a total of 3/4 of a page for ads.
Which of these sentences is always true for a parallelogram?
A.All sides are congruent.
B. All angles are congruent.
c.The diagonals are congruent.
D. Opposite angles are congruent.
Answer:
D. Opposite angles are congruent
With option A, we can see that it is clearly wrong, in a parallelogram, only the opposite sides are congruent, if all of the sides are congruent then the shape is more likely to be a square or a rhombus.
With option B, only the opposites angles are congruent. If all four angles are congruent, that will be more likely to be true when we consider a square or a rectangle.
With option C, it is also wrong, unless the shape is a rhombus, square or rectangle.
That leaves us with the last option which is D.
A customer wants you to enlarge a photo to 2 3/4 its current height. The photo’s current height is 3 /14 inches. What should its enlarged height be, in inches?
Answer:
33/56 inches
Step-by-step explanation:
2.75(3/14)=33/56
Answer:
[tex] 8\frac { 1 5 } { 1 6 } [/tex] inches or 8.94 inches
Step-by-step explanation:
We know that the current height of the photo is [tex]3\frac{1}{4}[/tex] inches and the customer wants it to be enlarged by a factor of [tex]2\frac{3}{4}[/tex] its current height.
[tex] 3\frac { 1 } { 4 } = 3.25 [/tex]
[tex] 2 \frac { 3 } { 4 } = 2.75 [/tex]
Multiplying this scale factor with the current height of photo to find the enlarged height.
Enlarged height = [tex]3.25 \times 2.75 = 8\frac{15}{16}[/tex] inches or 8.94 inches
Find the measure of ∠M.
Measure of an angle is usually in degrees or radians. The measure of angle M is [tex]36^\circ[/tex]. Thus, [tex]m\angle M = 36^\circ[/tex]
How to find measure of missing third angle in a triangle?It is a theorem in mathematics that sum of internal angles of a triangle equate to [tex]180^\circ[/tex].
Suppose that two angles are given as [tex]a^\circ[/tex] and [tex]b^\circ[/tex] and let there is one angle missing. Let its measure be [tex]x^\circ[/tex]
Then, by the aforesaid theorem, we get:
[tex]a^\circ + b^\circ + x^\circ = 180^\circ\\\\ \text{Subtracting a + b degrees from both sides} \\\\x^\circ = 180^\circ - (a^\circ + b^\circ)[/tex]
For the given case, we have:
[tex]m\angle S = 84^circ\\\\m\angle A = 60^\circ\\\\m\angle M = x^\circ \text{ (say)}[/tex]
Thus,
[tex]x^\circ = 180^\circ - (60+84)^\circ\\\\x^\circ = 36^\circ[/tex]
Thus,
The measure of angle M is [tex]36^\circ[/tex]. Thus, [tex]m\angle M = 36^\circ[/tex]
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Which is the value of this expression when j=-2
Answer:
Step-by-step explanation:
(jk^-2/j^-1k^-3)^3
(-2)(-1)^-2
------------- ^3
(-2)^-1(-1)^-3
switch negative exponenst to other side
(-2)(-2)(-1)^3
__________
(-1)^2
4(-1)
-----
1
= -4
REMEMBER all to the 3rd power!
(-4)^3
-64
Find the equation of the line that is perpendicular to the line 4x + 2y = 1 and passes through the point (−4, 3).
Answer:
[tex]\large\boxed{y=\dfrac{1}{2}x+5}[/tex]
Step-by-step explanation:
[tex]\text{Let}\ k:y=_1x+b_1\ \text{and}\ l:y=m_2x+b_2.\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\============================\\\\\text{We have}\ 4x+2y=1.\ \text{Convert to the slope-intercept form y = mx + b:}\\\\4x+2y=1\qquad\text{subtract 4x from both sides}\\\\2y=-4x+1\qquad\text{divide both sides by 2}\\\\y=-2x+\dfrac{1}{2}\to m_1=-2.\\\\\text{Therefore}\ m_2=-\dfrac{1}{-2}=\dfrac{1}{2}.\\\\\text{The equation of the searched line:}\ y=\dfrac{1}{2}x+b.\\\\\text{The line passes through }(-4,\ 3).[/tex]
[tex]\text{Put the coordinates of the point to the equation.}\ x=-4,\ y=3:\\\\3=\dfrac{1}{2}(-4)+b\\\\3=-2+b\qquad\text{add 2 to both sides}\\\\b=5[/tex]
The midpoint of MN is point P at (–4, 6). If point M is at (8, –2), what are the coordinates of point N? (–16, 14) (–10, 5) (2, 2) (6, 2)
Answer is
(-16 , 14)
Answer:
-16, 14
Step-by-step explanation:
Ther are 6 girls and 7 boys in a class. A team of 10 players is to be selected from the class. How many different combinations of players are possible
Answer:
[tex]13C10 =286[/tex]
Step-by-step explanation:
To solve this problem we must use the formula of combinations.
[tex]nCr =\frac{n!}{r!(n-r)!}[/tex]
Where n is the number of players that there are and elect r of them
In this case there are [tex]7 + 6 = 13[/tex] players and you choose 10 of them
Then we look for 13C10
[tex]13C10 =\frac{13!}{10!(13-10)!}[/tex]
[tex]13C10 =\frac{13!}{10!*3!}[/tex]
[tex]13C10 =286[/tex]
There are 286 possible combinations
Mya is buying juice boxes for her party. Which offer should Mya choose to get the lowest price per juice box? 1.) 2 juice boxes for $0.66 2.) 6 juice boxes for $1.92 3.) 9 juice boxes for $2.97 4.) 12 juice boxes for $4.20
For this case we must find the unit cost of juice box of each option and compare:
Option A: 2 juice boxes for $ 0.66
[tex]\frac {0.66} {2} = 0.33 \frac {dollars} {box}[/tex]
Option B: 6 juice boxes for $ 1.92
[tex]\frac {1.92} {6} = 0.32 \frac {dollars} {box}[/tex]
Option C: 9 juice boxes for $ 2.97
[tex]\frac {2.97} {9} = 0.33 \frac {dollars} {box}[/tex]
Option D: 12 juice boxes for $ 4.20
[tex]\frac {4.20} {12} = 0.35 \frac {dollars} {box}[/tex]
The most feasible option is B. That is, buy 6 boxes for $1.92
Answer:
Option B
Answer: Option A: 2 juice boxes for $ 0.66Option B: 6 juice boxes for $ 1.92Option C: 9 juice boxes for $ 2.97Option D: 12 juice boxes for $ 4.20The most feasible option is B. That is, buy 6 boxes for $1.92
Step-by-step explanation:
lynn and dawn tossed a coin 30 times and got heads 12 times. what is the experimental probability of tossing heads using lynn and dawn's results
Answer:
So, the experimental probability of tossing heads using lynn and dawn's results is 2/5
Step-by-step explanation:
No of times the coin is tossed = 30
No of times head came = 12
Probability of tossing heads = No of times head came / No of times the coin is tossed
= 12/30
= 4/10
= 2/5
So, the experimental probability of tossing heads using lynn and dawn's results is 2/5
Rectangle we're prison has a length of 3 and 1/2 meters a with of 4 and 1/2 meters and a height of 2 m. Which expression can be used to find the volume of the prism?
Answer:
volume = 3.5 m * 4.5 m * 2 m
Step-by-step explanation:
The volume of a rectangular prism is
volume = length * width * height
volume = 3.5 m * 4.5 m * 2 m
Which number is a rational number?
B, because a rational number is a number that goes on forever. Ex : pi
The graph shows a rider's height y, in feet, above or below the center of a Ferris wheel, for a
given number of seconds, X.
How many minutes does it take for the wheel to make 8 revolutions?
6 min
10 min
12 min
45 min
Answer:the answer is 10 min hope this helped:)
Step-by-step explanation:
the answer is 6 minutes
The circumfrance of the moon is about 6,790 miles, find the diameter of the moon to the nearest mile.
A. 155 miles
B. 2,162 miles
C. 3,395 miles
D. 21,321 miles
Answer
B is the answer to this question
Answer:
D=2162 or answer B
Step-by-step explanation:
1.) C=Dpi
2.)6790=D pi
3.)6790/pi = D pi/pi
4.) D= 2161.32412719
5.) D=2162
priya has a recipe for banana bread she uses 7 1/2
This is an incomplete question.
Answer:
Step-by-step explanation:
This is incomplete
You roll a number cube numbered from 1 to 6. What is the probability that the number is a composite number?
For the six numbers in the cube, we have.
1 is not prime nor composite2 is prime3 is prime4 is composite, because it can be written as [tex]2\cdot 2[/tex]5 is prime6 is composite, because it can be writte as [tex]2\cdot 3[/tex]So, only two of the numbers in the cube are composite. This means that you have a chance of
[tex]\dfrac{2}{6}=\dfrac{1}{3}[/tex] of rolling one of them.
Which of the following statements about the mean is false?
The mean and the median sometimes have the same value.
The mean is not used with variables measured at the ordinal level.
The mean is pulled in the direction of the hump in a skewed distribution.
The value of the mean reflects both the number and the value of cases.
Answer:
The value of the mean reflects both the number and the value of cases. is false
Step-by-step explanation:
The incorrect statement about the mean is that it's pulled in the direction of the hump in a skewed distribution. In fact, the mean is influenced by every value in the data set, including outliers, and if a distribution is skewed, the mean is pulled towards the tail, not the hump.
Explanation:The statement that is false about the mean is: 'The mean is pulled in the direction of the hump in a skewed distribution'. Rather, it's the median that stays closer to the 'hump' in a skewed distribution. The mean is affected by every value in the data set, including outliers. If a distribution is skewed, the mean will be pulled in the direction of the skew, which could be towards the tail, not the hump. For example, in a right-skewed distribution with values 1, 2, and 100, the mean would be 34.33, which is closer to the outlier (100) rather than the hump around 1 and 2.
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Which of the following equations of y = sin x has been transformed by a vertical shift down 3 units and stretch factor of 2?
A. y = sin 20
B. y = 2 sin +3
C. y = -2sin 8 - 3
D. y = 3 sin 0 - 2
E. y = 2sin 0-3
ANSWER
E.
[tex]y = 2 \sin( \theta) - 3[/tex]
EXPLANATION
The parent function
[tex]y = \sin( \theta) [/tex]
can be shifted down by 3 units to obtain
[tex]y = \sin( \theta) - 3[/tex]
Also, when the basic sine function is stretched vertically by a factor of 2, the equation becomes,
[tex]y = 2 \sin( \theta) [/tex]
Therefore, a vertical shift down 3 units and stretch factor of 2 gives the equation:
[tex]y = 2\sin( \theta) - 3[/tex]
The correct choice is E.
Which statement Is best represented by the inequality d<0.35? A. The pen cost less than $0.35. B. The pencil costs greater than $0.35. C. The toys cost more than $0.35. D. The stamps cost is equal to $0.35
Answer:
Option A, The pen cost less than $0.35.
Step-by-step explanation:
The given inequality is d ∠ 0.35
Now we have to define this inequality with the help of given options.
If d represents the cost of pen, then cost of pen should be less than 0.35.
Option A, The pen cost less than $0.35. is the answer.
Answer:
A
Step-by-step explanation:
Determine S(1+ 4/3x-1
+ 3/x+2) dx by partial fractions
Answer:
[tex]\large\boxed{\int\left(1+\dfrac{4}{3x-1}+\dfrac{3}{x+2}\right)\ dx=x+\dfrac{4}{3}\ln(3x-1)+3\ln(x+2)}[/tex]
Step-by-step explanation:
[tex]\large{\int}\normal\left(1+\dfrac{4}{3x-1}+\dfrac{3}{x+2}\right)\ dx=\int1\ dx+\int\dfrac{4}{3x-1}\ dx+\int\dfrac{3}{x+2}\ dx\\\\(1)\int1\ dx=x\\\\(2)\int\dfrac{4}{3x-1}\ dx\Rightarrow\left|\begin{array}{ccc}3x-1=t\\3dx=dt\\dx=\frac{1}{3}dt\end{array}\right|\Rightarrow\int\dfrac{4}{3t}\ dt=\dfrac{4}{3}\int\dfrac{1}{t}\ dt=\dfrac{4}{3}\ln(t)=\dfrac{4}{3}\ln(3x-1)\\\\(3)\int\dfrac{3}{x+2}\ dx\Rightarrow\left|\begin{array}{ccc}x+2=u\\dx=du\end{array}\right|\Rightarrow\int\dfrac{3}{t}\ dt=3\int\dfrac{1}{t}\ dt=3\ln(t)=3\ln(x+2)[/tex]
[tex]\Downarrow\\\\\int\left(1+\dfrac{4}{3x-1}+\dfrac{3}{x+2}\right)\ dx=x+\dfrac{4}{3}\ln(3x-1)+3\ln(x+2)[/tex]
How is dividing mixed numbers related to dividing whole numbers
Answer:
Dividing mixed numbers is very similar to multiplying mixed numbers. You just add one step—after changing the divisor into an improper fraction, you then find its reciprocal and multiply. ... First step: Write the whole number and the mixed number as improper fractions.
Step-by-step explanation:
Dividing mixed numbers is essentially similar to dividing whole numbers, with an extra step of converting mixed numbers into improper fractions. The core concepts remain the same but it extends division into fractions.
Explanation:Dividing mixed numbers is related to dividing whole numbers because the fundamental concepts remain the same. In dividing whole numbers, we take a number (dividend) and distribute it into equal parts. For instance, dividing 6 by 2, we are distributing 6 into 2 equal parts, which will give us 3 in each part.
Similarly, when dividing mixed numbers, we proceed in the same manner. However, it adds an extra step of converting mixed numbers into improper fractions first before proceeding with the division. For example, when dividing 2 1/2 by 1 1/2, we would first convert these into improper fractions and then proceed with the division as we would do with whole numbers.
Therefore, the concept for dividing mixed numbers is essentially an extension of the concept for dividing whole numbers.
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