given the equation is written in text so the signs and operators are weird, i don't understand the question but an inverse of any function can be found by switching f(x) or y with x.
For example if f(x) = 3x, then the inverse is x = 3y or y=x/3
Final answer:
The inverse of the function [tex]f(x) = \sqrt[3]{7x - 21} - 3[/tex] is found by first expressing the function as [tex]y = \sqrt[3]{7x - 21} - 3,[/tex] then isolating x, and finally expressing x in terms of y, resulting in the inverse function[tex]f^{-1}(y) = \frac{(y + 3)^3 + 21}{7}.[/tex]
Explanation:
To find the inverse of the function [tex]f(x) = \sqrt[3]{7x-21} - 3,[/tex] we want to solve for x in terms of y. First, we replace f(x) with y to get [tex]y = \sqrt[3]{7x-21} - 3.[/tex] We then solve for x using the following steps:
Add 3 to both sides of the equation to get[tex]y + 3 = \sqrt[3]{7x-21}.[/tex]
Raise both sides to the power of 3 to eliminate :[tex](y + 3)^3 + 21 = 7x.[/tex]
Finally, divide by 7 to isolate x, so[tex]x = \frac{(y + 3)^3 + 21}{7}.[/tex]
Thus, the inverse function is [tex]f^{-1}(y) = \frac{(y + 3)^3 + 21}{7}.[/tex]
Select the graph that represents the given set. (Click on the graph until the correct one is showing.) B = {(1, 2), (2, 1), (3, 0), (4, -1)}
Answer:
3rd graph
Step-by-step explanation:
Hi, the answer would be the 3rd graph because each given set is shown on that coordinate relation.
Hope this helps, I attached the graph in case my explanation was confusing.
Third graph represents the set B = (1, 2), (2, 1), (3, 0), (4, -1).
Here, Set of points given as,
B = (1, 2), (2, 1), (3, 0), (4, -1).
We have to check the graph which represents the given set.
How to show points on graph?
Points are identified by stating their coordinates in the form of (x, y).
Where x is coordinate of x - axis and y is coordinate of y - axis.
Now,
Set of points given as,
B = (1, 2), (2, 1), (3, 0), (4, -1).
⇒ Third graph represents the set B = (1, 2), (2, 1), (3, 0), (4, -1).
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A man who has lost $37 playing roulette in Las Vegas wins $43 playing blackjack. He then loses $44 playing wheel of fortune. Write an expression using the numbers -37, 43 and 44 to describe this situation and then simplify it. Write your simplified result below.
_____
Answer:
(-37+43)-44=x
Step-by-step explanation:
i put the parentheses only because of PEMDAS. it's a pretty straightfoward question. To put it in an expression however, I'm not sure. Best of luck!
At a toy store the children's department has bicycles and tricycles. There are 20 wheels on a group of bicycles each bike has 2 wheels how many bikes are there
Answer:
10
Step-by-step explanation:
20/2=10
Answer:10
Step-by-step explanation:
Please help me out with this!!
Answer:
see explanation
Step-by-step explanation:
Given
x + [tex]\frac{1}{2}[/tex] ≤ - 3 or x - 3 > - 2
Solve the left and right inequalities separately, that is
x + [tex]\frac{1}{2}[/tex] ≤ - 3 ( isolate x by subtracting [tex]\frac{1}{2}[/tex] from both sides )
x ≤ - 3 - [tex]\frac{1}{2}[/tex], that is
x ≤ - [tex]\frac{6}{2}[/tex] - [tex]\frac{1}{2}[/tex], thus
x ≤ - [tex]\frac{7}{2}[/tex]
OR
x - 3 > - 2 ( isolate x by adding 3 to both sides )
x > 1
Solution is
x ≤ - [tex]\frac{7}{2}[/tex] or x > 1
A rocket is divided into three sections: the payload and navigation section in the top, the fuel section in the middle, and the rocket engine section in the bottom. The top section is one-sixth the length of the bottom section. The middle section is one-half the length of the bottom section. The total length is 240 ft. Find the length of each section?
Answer:
Top part lenght= 24 ft.
Middle part= 72 ft.
Bottom part = 144 ft.
Step-by-step explanation:
First we assign varibales to each rocket part
top part length= x;
middle part length= y;
bottom part length= z;
Then from the reading we can write the next equations:
X=1/6 Z; (1)
Y=1/2 Z; (2)
X + Y +Z = 240 (3)
Then solving, we replace x and y, in the equation (3)
1/6 z + 1/2 z + z = 240
Multiply by 6 both sides:
6/6 z + 6/2 z + 6 z = 1440
z + 3 z + 6 z = 1440
Then grouping similar terms
10 z = 1440
z= 144
Then replacing in (1) and (2)
Y=1/2 *144=72
X=1/6*144= 24
Solve for x.
6^-2x • 6^-x = 1/216
6^-2x • 6^-x = 1/216
x=1 is the answer
Answer: x=1
-----------------------------------------------------
Step-by-step explanation: Negative power rule, quotient rule, then you'll simplify. After that use the negative power rule and multiply both sides by 6^3x. Then simplify 1/216 and multiply both sides by 216. Simplify 1*216=216, then finally you'll put both sides on the same base and cancel the base of six on both sides. Divide both sides by 3 and you'll get 1=x. Now just switch places so the x will be first (x=1).
Negative power rule x^-a=1/x^a
Quotient rule x^a/x^b=x^a-b
-----------------------------------------------------
P.S. if you want me to right out on paper how I did it if it would be easier for you to visually see the text to learn it then it would be my pleasure! Math is hard so I'm happy to help more with this problem!
HOPE THIS HELPS, HAVE A BLESSED DAY! :-) ;-)
꒰⑅•ᴗ•⑅꒱D is the midpoint of CE . If CD = 5x and CE = 9x + 8, what is CD?
Answer:
CD = 40
Step-by-step explanation:
Since D is the midpoint, the entire length CE is twice the length of CD, so we have ...
2×CD = CE
2×(5x) = 9x +8
x = 8 . . . . . . . . subtract 9x and simplify
Then the length of CD is ...
CD = 5x = 5·8 = 40
Find the solution of the following equation whose argument is strictly between 270^\circ270 ∘ 270, degree and 360^\circ360 ∘ 360, degree. Round your answer to the nearest thousandth. z^4=-625z 4 =−625
[tex]\rightarrow z^4=-625\\\\\rightarrow z=(-625+0i)^{\frac{1}{4}}\\\\\rightarrow x+iy=(-625+0i)^{\frac{1}{4}}\\\\ x=r \cos A\\\\y=r \sin A\\\\r \cos A=-625\\\\ r \sin A=0\\\\x^2+y^2=625^{2}\\\\r^2=625^{2}\\\\|r|=625\\\\ \tan A=\frac{0}{-625}\\\\ \tan A=0\\\\ A=\pi\\\\\rightarrow z= [625(\cos (2k \pi+pi) +i \sin (2k\pi+ \pi)]^{\frac{1}{4}}\\\\k=0,1,2,3,4,....\\\\\rightarrow z=(625)^{\frac{1}{4}}[\cos \frac{(2k \pi+pi)}{4} +i \sin \frac{(2k\pi+ \pi)}{4}] [/tex]
[tex]\rightarrow z_{0}=(625)^{\frac{1}{4}}[\cos \frac{pi}{4} +i \sin \frac{\pi)}{4}]\\\\\rightarrow z_{1}=(625)^{\frac{1}{4}}[\cos \frac{3\pi}{4} +i \sin \frac{3\pi}{4}]\\\\ \rightarrow z_{2}=(625)^{\frac{1}{4}}[\cos \frac{5\pi}{4} +i \sin \frac{5\pi}{4}]\\\\ \rightarrow z_{3}=(625)^{\frac{1}{4}}[\cos \frac{7\pi}{4} +i \sin \frac{7\pi}{4}][/tex]
Argument of Complex number
Z=x+iy , is given by
If, x>0, y>0, Angle lies in first Quadrant.
If, x<0, y>0, Angle lies in Second Quadrant.
If, x<0, y<0, Angle lies in third Quadrant.
If, x>0, y<0, Angle lies in fourth Quadrant.
We have to find those roots among four roots whose argument is between 270° and 360°.So, that root is
[tex] \rightarrow z_{2}=(625)^{\frac{1}{4}}[\cos \frac{5\pi}{4} +i \sin \frac{5\pi}{4}][/tex]
The solutions are[tex]\( z = 5e^{i(\frac{9\pi}{4})} \), \( z = 5e^{i(\frac{17\pi}{4})} \), \( z = 5e^{i(\frac{25\pi}{4})} \), and \( z = 5e^{i(\frac{33\pi}{4})} \).[/tex]
To find the solutions of the equation [tex]\( z^4 = -625 \) in the given range of argument, we first rewrite the equation in polar form. Let \( z = re^{i\theta} \), where \( r \) is the magnitude of \( z \) and \( \theta \) is its argument.[/tex]
The equation becomes:
[tex]\[ (re^{i\theta})^4 = -625 \]\[ r^4e^{4i\theta} = -625 \]Now, since the right side is a negative real number, we can express it in polar form as \( -625 = 625e^{i\pi} \). So we have:\[ r^4e^{4i\theta} = 625e^{i\pi} \][/tex]
Comparing the magnitudes and arguments on both sides, we get:
[tex]\[ r^4 = 625 \]\[ 4\theta = \pi \]Solving for \( r \) and \( \theta \):\[ r = \sqrt[4]{625} = 5 \]\[ \theta = \frac{\pi}{4} \][/tex]
However, we need solutions in the given range of argument, which is between [tex]\( 270^\circ \) and \( 360^\circ \). Since \( \frac{\pi}{4} \) is approximately \( 45^\circ \) or \( \frac{\pi}{4} \), we need to add multiples of \( 2\pi \) to this angle to get solutions within the desired range.[/tex]
The solutions are:
[tex]\[ z_1 = 5e^{i(\frac{\pi}{4} + 2\pi)} \]\[ z_2 = 5e^{i(\frac{\pi}{4} + 4\pi)} \]\[ z_3 = 5e^{i(\frac{\pi}{4} + 6\pi)} \]\[ z_4 = 5e^{i(\frac{\pi}{4} + 8\pi)} \]Simplifying the angles:\[ z_1 = 5e^{i(\frac{9\pi}{4})} \]\[ z_2 = 5e^{i(\frac{17\pi}{4})} \]\[ z_3 = 5e^{i(\frac{25\pi}{4})} \]\[ z_4 = 5e^{i(\frac{33\pi}{4})} \][/tex]
Finally, we can convert these back to rectangular form if needed:
[tex]\[ z_1 = 5\left(\cos\frac{9\pi}{4} + i\sin\frac{9\pi}{4}\right) \]\[ z_2 = 5\left(\cos\frac{17\pi}{4} + i\sin\frac{17\pi}{4}\right) \]\[ z_3 = 5\left(\cos\frac{25\pi}{4} + i\sin\frac{25\pi}{4}\right) \]\[ z_4 = 5\left(\cos\frac{33\pi}{4} + i\sin\frac{33\pi}{4}\right) \][/tex]
You can compute the approximate values of these complex numbers and round them to the nearest thousandth if necessary.
Complete Question;
Find the solution of the following equation whose argument is strictly between [tex]$270^\circ$[/tex] , degree and [tex]$360^\circ$[/tex] , degree. Round your answer to the nearest thousandth. [tex]\[z^4 = -625z\][/tex]
Fred is 4 times as old as Nathan and is also 27 years older than Nathan. Let f be Fred's age and let n be Nathan's age. Which system of equations represents this situation?
Answer:
The system of equations is
[tex]f=4n[/tex] and [tex]f=n+27[/tex]
Fred's age is 36 years old and Nathan's age is 9 years old
Step-by-step explanation:
Let
f -----> Fred's age
n ----> Nathan's age
we know that
[tex]f=4n[/tex]-----> equation A
[tex]f=n+27[/tex] ----> equation B
equate the equations and solve for n
[tex]4n=n+27\\4n-n=27\\3n=27\\n=9[/tex]
Find the value of f
[tex]f=4(9)=36[/tex]
therefore
Fred's age is 36 years old and Nathan's age is 9 years old
Answer:
The system of equations is f=4n and f=n+27
Step-by-step explanation:
A bike lock has a 4 digit combination. Each character can be any digit between 1-9. the only restriction is that all 4 characters cannot be the same (e.g. 1111, 2222, 3333... etc.). How many combinations are possible?
a. 6552 c. 9,990
b. 6561 d. 10,000
Answer:
A
Step-by-step explanation:
Let's first assume that the restriction doesn't hold.
So that way we can say that we can put ANY OF THE 9 DIGITS (1-9) on ANY OF THE 4 DIGIT COMBINATIONS.
Hence,
first digit can be any of 1 through 9
second digit can be any of 1 through 9
third digit can be any of 1 through 9
4th digit can be any of 1 through 9
So the total number of possibilities will be 9 * 9 * 9 * 9 = 6561
now, let's take into account the restriction. since all 4 digits cannot be the same, so we need to exclude:
1111
2222
3333
4444
5555
6666
7777
8888
9999
That's 9 numbers. So final count would be 6561 - 9 = 6552
Answer A is right.
The correct answer is a. 6552. There are 6561 total combinations for a 4-digit bike lock. After excluding 9 combinations where all digits are the same, 6552 combinations remain.
To determine the total number of possible combinations for a 4-digit bike lock with digits ranging from 1 to 9, we start with the total unrestricted possibilities. Each digit has 9 options (1 through 9), so we calculate:
9 × 9 × 9 × 9 = 94 = 6561However, the problem states that all 4 digits cannot be the same. This means we must subtract the 9 combinations where all four digits are identical (e.g., 1111, 2222, ..., 9999). Thus, we calculate:
Total valid combinations = 6561 - 9 = 6552The correct answer is a. 6552.
Amira is solving the equation x^2-8x=7. Which value must be added to both sides of the equation to make the left side a perfect-squared trinomial?
Answer:
16
Step-by-step explanation:
The constant in a perfect square trinomial is the square of half the coefficient of the linear term.
(x +a)² = x² +2ax +a²
For 2a=-8, a=-4 and a² = 16. The constant 16 must be added:
x² -8x +16 = 7+16 . . the left side is a perfect square trinomial
(x -4)² = 23 . . . . . . . the left side is a perfect square
A rectangular solar panel has a length that is 12 inches shorter than 3 times its width. If the perimeter of the panel is 160 inches, what are the dimensions of the panel?
Answer:
width = 23 inches
length = 57 inches
Step-by-step explanation:
Let x inches be the width of the rectangular solar panel.
So,
width = x inches
3 times the width = 3x inches
12 inches shorter than 3 times the width = 3x - 12 inches
length = 3x - 12 inches
The perimeter of the rectangle is
[tex]P=2(\text{Width}+\text{Length})[/tex]
Hence,
[tex]160=2(x+3x-12)\\ \\160=2(4x-12)\\ \\80=4x-12\ [\text{Divided by 2}]\\ \\4x=80+12\\ \\4x=92\\ \\x=23\ inches\\ \\3x-12=3\cdot 23-12=69-12=57\ inches[/tex]
A basketball team practices their shooting. The function f(x) represents the number of baskets made during practice, where x is the number of players at the practice. Does a possible solution of (12, 36) make sense for this function? Explain your answer.
Answer:
The answer to your question is below
Step-by-step explanation:
I think it will easy to understand if we graph this information but let's explain it without the graph.
According to the information given, we know that f(x) represents the number of baskets and x the number of players at the practice.
So, if we have the point (12, 36) we can conclude that during practice there were 12 players and there were 36 baskets.
For me, it makes sense.
Answer: Yes. The input and output are both possible
Step-by-step explanation:
The reason why is because f(x) stands for y and in parenthe this is how it looks like(x,y) and if you put the numbers in you have (12,36) 12 stands for the number of players and f(x) or y stands for the number of baskets made.
Explain the distance formula. Then use it to calculate the
distance between A(1, 1) and B(7, −7).
Answer:
[tex]dAB=10\ units[/tex]
Step-by-step explanation:
we know that
The distance formula is derived by creating a triangle and using the Pythagorean theorem to find the length of the hypotenuse. The hypotenuse of the triangle is the distance between the two points
The formula to calculate the distance between two points is equal to
[tex]d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}[/tex]
we have
A(1, 1) and B(7, −7)
Let
(x1,y1)=A(1, 1)
(x2,y2)=B(7, −7)
substitute the given values in the formula
[tex]dAB=\sqrt{(-7-1)^{2}+(7-1)^{2}}[/tex]
[tex]dAB=\sqrt{(-8)^{2}+(6)^{2}}[/tex]
[tex]dAB=\sqrt{64+36}[/tex]
[tex]dAB=\sqrt{100}[/tex]
[tex]dAB=10\ units[/tex]
Answer: The required distance between the points between A(1, 1) and B(7, −7) is 10 units.
Step-by-step explanation: We are given to explain the distance formula. Also, to calculate the distance between A(1, 1) and B(7, −7).
Distance formula : The distance between any two two points with co-ordinates (a, b) and (c, d) is given by
[tex]D=\sqrt{(c-a)^2+(d-b)^2}.[/tex]
Therefore, the distance between the points A(1, 1) and B(7, −7) is given by
[tex]D\\\\=\sqrt{(7-1)^2+(-7-1)^2}\\\\=\sqrt{36+64}\\\\=\sqrt{100}\\\\=10.[/tex]
Thus, the required distance between the points between A(1, 1) and B(7, −7) is 10 units.
MARK AS BRAINLEST!
5 + x = 5
Answer:
x = 0
Step-by-step explanation:
You know the answer to this because you know the identity element for addition is 0: 5 + 0 = 5.
__
Or, you can make use of the addition property of equality and add -5 to both sides of the equation:
5 - 5 + x = 5 - 5
x = 0 . . . . . . . . . . simplify
Answer:x=0
Step-by-step explanation:
Solve for x.
5+4/7(21+3x)=41
(note the 4/7 is a fraction not division)
Enter your answer in the box.
x =
Answer:
x=14
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.
Answer:
The answer is x=14.
Step-by-step explanation:
In order to determine the answer, we have to solve for x, that is, we have to free the "x" variable in any side of the equation. We have to do the same procedure for any variable, independent of the amount of variables in the equation.
Solving the expression for x:
[tex]5+\frac{4}{7}*(21+3x)=41\\\frac{4}{7}*(21+3x)=41-5\\\\21+3x=\frac{36}{\frac{4}{7} } \\\\21+3x=\frac{36*7}{4}\\3x=63-21\\3x=42\\x=\frac{42}{3}= 14[/tex]
The solution for x is x=14.
What is the answer to this How wide is a poster that has a length of 9/2 feet and area of 45/4 square feet? A) 1/4 feet B) 5/8 feet C) 2/5 feet D) 5/2 feet
Answer:
Area = length * width
11.25 sq ft = 4.5 ft * width
width = 11.25 / 4.5
width = 2.5 feet
5/2 feet = 2.5 feet
answer is D
Step-by-step explanation:
Alli has hired mark and alexis to work for his shipping company. Mark can load a truck with packages in 120 minutes. Alexis can load the same number of packaged in 240 minutes. If mark and alexis work together on a particular truck, how many minutes will it take them to load all of the packages
Answer:
The answer to your question is : 80 minutes
Step-by-step explanation:
Data
Mark = 120 minutes
Alexis = 240 minutes
Together = ??
We need to write an equation, we consider that in 1 minute, Mark loads 1/120 and Alexis 1/240. Then the equation is:
1 = x/120 + x/240 1 = truck uploaded ; x = time in minutes
Solve it 1 = (2x + x) /240
240 = 3x
x = 240/3
x = 80 minutes
The Mark and Alexis work together will take to load all of the packages is 80 minutes.
What is a word problem?A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
For the given situation,
Mark can load a truck with packages = 120 minutes
Mark's rate of work = [tex]\frac{1}{120}[/tex]
Alexis can load a truck with packages = 240 minutes
Alexis's rate of work = [tex]\frac{1}{240}[/tex]
Rate of work together by Mark and Alexis is
⇒ [tex]\frac{1}{120}+\frac{1}{240}[/tex]
⇒ [tex]\frac{2}{240}+\frac{1}{240}[/tex]
⇒ [tex]\frac{3}{240}[/tex]
⇒ [tex]\frac{1}{80}[/tex]
Thus Mark and Alexis work together will take to load all of the packages is [tex]\frac{1}{\frac{1}{80} }[/tex]
⇒ [tex]80[/tex]
Hence we can conclude that the Mark and Alexis work together will take to load all of the packages is 80 minutes.
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∠CAT and ∠TAD are a linear pair, if M∠CAT = 2x-5 and M∠TAD = 5x+10, what is the measure of ∠CAT and ∠TAD? Draw a picture labelling the given information and show your work
Answer:
The answer to your question is: m∠CAT = 45; m∠TAD = 135
Step-by-step explanation:
Data
∠CAT and ∠TAD are a linear pair
m∠CAT = 2x-5
m∠TAD = 5x+10
m∠CAT = ?
m∠TAD = ?
Process
The sum of linear pairs angles equals 180°, so
m∠CAT + m ∠TAD = 180°
(2x - 5) + (5x + 10) = 180°
2x - 5 + 5x + 10 = 180
Solve for x 7x + 5 = 180
7x = 180 - 5
7x = 175
x = 175 / 7
x = 25
m∠CAT = 2(25) - 5 = 50 -5 = 45
m∠TAD = 5(25) + 10 = 125 + 10 = 135
Answer:
[tex]m\angle CAT=45^{\circ}[/tex]
[tex]m\angle TAD=135^{\circ}[/tex]
Step-by-step explanation:
We are given that angle CAT and angle TAD are a linear pair.
[tex]m\angle CAT=2x-5[/tex]
[tex]m\angle TAD=5x+10[/tex]
We have to find the measure of angle CAT and angle TAD.
[tex]m\angle CAT+m\angle TAD=180^{\circ}[/tex] (linear pair sum =180 degrees)
[tex]2x-5+5x+10=180[/tex]
[tex]7x+5=180[/tex]
[tex]7x=180-5=175[/tex]
[tex]x=\frac{175}{7}=25[/tex]
Substitute the values then we get
[tex]m\angle CAT=2(25)-5=45^{\circ}[/tex]
[tex]m\angle TAD=5(25)+10=125+10=135^{\circ}[/tex]
Can someone help me with number 6?
Answer:
I am trying on this but I can solve you the 10th question
Answer:
12.4 miles, N84.4°E
Step-by-step explanation:
Split the translation over the components parallel to the direction S>N and W>E, then calculate the sum of both components, and get magnitude and direction of the movement. Here's my calculation, double check them regardless.
For the first hour, it travels [tex] 8.5 cos 37.5 [/tex] north and [tex] 8.5 sin 37.5 [/tex] east. Once the wind changes, it flies [tex] 6*1.5 cos (180-52.5) = 9 cos 127.5 [/tex] "north" ( the actual movement is southbound, which will appear calculating the cosine and getting a negative number) and [tex]6*1.5 sin (180-52.5) = 9 sin 127.5 [/tex]. The complete movement is 1.2 miles N and 12.3 miles E. The total movement is, with the Pythagorean theorem, 12.4 miles total, and the angle it forms with the north direction is the [tex]tan^{-1} \frac{12.3}{1.2} = 84.4°[/tex].
Suppose the rate of growth of bacteria in a petri dish is given by q(t)=12 t, where t is given in hours and q(t) is given in millions of bacteria per hour. If a culture starts with 89,000,000 bacteria, find a function q(t) that gives the number of bacteria in the petri dish at any time t. How many bacteria are in the dish after 3 hours
Final answer:
To find the function representing the total number of bacteria Q(t) in the petri dish at any time t, we integrate the growth rate function q(t)=12t and add the initial amount. The resulting function is Q(t) = 6t^2 + 89 million. After 3 hours, there will be 143 million bacteria in the dish.
Explanation:
The student is given the rate of bacterial growth in a petri dish as q(t)=12t, which represents the number of millions of bacteria per hour, and the initial number of bacteria is 89,000,000 (or 89 million). To find the function that gives the total number of bacteria at any time t, we integrate the rate of growth and add the initial amount. Since the rate of growth is linear, the integral of q(t)=12t with respect to t is 6t2, and adding the initial amount we get the total number of bacteria Q(t) = 6t2 + 89 million.
After 3 hours, we substitute t=3 into this function to get the number of bacteria:
Q(3) = 6(3)2 + 89 = 6(9) + 89 = 54 + 89 = 143 million bacteria.
Final answer:
A function q(t) representing the number of bacteria over time can be determined by integrating the growth rate function and adding the initial amount of bacteria. After 3 hours, there will be 89,000,054 million bacteria in the dish.
Explanation:
The question asks us to find a function q(t) that gives the number of bacteria in a petri dish at any time t, given that it starts with 89,000,000 bacteria, and the growth rate is 12t million bacteria per hour. To find q(t), we need to integrate the growth rate function and then add the initial amount:
[tex]q(t) = \int (12t) dt + 89,000,000[/tex]
Upon integrating we get:
[tex]q(t) = 6t^2 + 89,000,000[/tex]
To find the number of bacteria after 3 hours, we plug in t = 3:
[tex]q(3) = 6(3)^2 + 89,000,000[/tex] = [tex]6(9) + 89,000,000[/tex] = [tex]54 + 89,000,000[/tex]
Therefore, the number of bacteria after 3 hours is 89,000,054 million.
Suppose that we want to increase production of consumer goods to a total of 6 units. Is it also possible to continue producing 7.5 units of capital goods ?
Consumer goods are goods produced with the help of Capital goods.
Capital Good=Machine and Machine Parts, Parts which are used in manufacture of a tool,
Consumer Good=Chocolate, Different Commodities, Car.
Capital goods last for longer period of time, whereas Consumer goods are manufactured again and again with the help of same Capital goods.
It is given that, we want to increase production of consumer goods to a total of 6 units.
Producing 7.5 ,units of capital goods is too high for producing 6 unit of Consumer good, as Capital good last for Longer duration of time.
Kate and Bill secured a loan with a 75% loan-to-value ratio. The interest rate was 7.125% and the term was for 30 years. The first month's interest payment was $477.82. What was the appraised value of the property?a) $103,700b) $80,475c) $107,300d) $79,239
Answer: Option c.
Step-by-step explanation:
We know that the first month's interest payment was $477.82, therefore, we can calculate the Annual interest multiplying this first month's interest payment by 12:
[tex]Annual\ interest=\$477.82*12\\\\Annual\ interest=\$5,733.84[/tex]
Dividing it by the interest rate (Remember that [tex]7.125\%=\frac{7.125\%}{100}=0.07125[/tex]), we get:
[tex]\frac{\$5,733.84}{0.07125}=\$80,474.94[/tex]
Finally, since Kate and Bill secured a loan with a 75% loan-to-value ratio, we get:
[tex]\frac{\$80,474.94}{0.75}=\$107,299.92 \approx\$107,300[/tex]
A rectangular park is w feet wide. Its length is 25 feet larger than its width. Record using algebra:
b
What is the length of a fence (including the gates) that was built around the park?
Answer:
The answer to your question is: 4w + 50
Step-by-step explanation:
Data
w = wide ft
length = w + 25
perimeter = ?
Process
Find the perimeter
Perimeter = 2 wide + 2 length
Perimeter = 2w + 2(w + 25)
Perimeter = 2w + 2w + 50
Perimeter = 4w + 50
The length of a fence around a rectangular park with width 'w' feet and length 'w + 25' feet would be 4w + 50 feet according to the perimeter formula for rectangles.
Explanation:The length of the rectangular park is given as w + 25 feet, where w represents the width of the park. The length of a fence surrounding the park, including the gates, would cover the entire perimeter of the park. The formula to find the perimeter of a rectangle is 2*(length + width).
Substitute the given dimensions into the formula, the fence length therefore would be 2*(w + (w + 25)). Simplifying this equation gives us 2*(2w + 25) which is equal to 4w + 50. Thus, the length of the fence, including the gates, that surrounds the rectangular park is 4w + 50 feet.
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John and Emily are brother and sister. John has as many brothers as sisters, and Emily has twice as many brothers as sisters. How many boys and girls are there in this family?
Answer:
4 boys, 3 girls
Step-by-step explanation:
brothers of John ⇒ x
sisters of John ⇒ y
John has as many brothers as sisters:
x = ybrothers of Emily ⇒ x + 1 (Emily have the same amount of brother as John, plus one (John))
sisters of Emily ⇒ y -1 (Emily have the same amount of sister as John, minus one (herself))
Emily has twice as many brothers as sisters:
2 (y-1) = x+ 1Now we have a system of 2 equations and 2 variables
x=y (I)
2y - 2 = x + 1 (II)
____________
Replace x in equation II
2y - 2 = y + 1
2y - y = 2 + 1
y = 3
____________
Replace y in equation I
x = y = 3
That mean that John have 3 brothers plus himself, there is 4 boys in the family and John have 3 sister, so there is 3 girls in the family
John and Emily are both girls as they have 0 brothers and 0 sisters in the family.
Explanation:Let's use variables to represent the number of brothers and sisters John and Emily have. Let b represent the number of brothers and s represent the number of sisters.
From the given information, we know that John has as many brothers as sisters. So, b = s.
We also know that Emily has twice as many brothers as sisters. So, b = 2s.
We can solve this system of equations to find the values of b and s. Substituting the value of b from the second equation into the first equation, we get 2s = s. Therefore, s = 0.
Since John and Emily are siblings, and John has as many brothers as sisters (0 sisters), it means John has 0 brothers as well. So, the family consists of only John and Emily, who are both girls.
h(x)=(f o g)(x).
h(x)=3/x-2
g(x)=x−2
What is f(x)?
read the analogy tornado: destroys:: fire: burns which identifies the type of analogy a. cause and effect b. part to whole c. item and category d.synonym
Answer:
A.Cause and effect
Step-by-step explanation:
Find the perimeter of this figure. Please show work.
Answer:
40.56 ft
Step-by-step explanation:
The perimeter is the sum of the lengths of the "sides" of this figure. Starting from the left side and working clockwise, the sum is ...
P = left side (8 ft) + top side (10 ft) + semicircle (1/2×8 ft×π) + bottom side (10 ft)
= 28 ft + 4π ft
= (28 +12.56) ft
P = 40.56 ft
A triangle hss one angle mesuaring 3x degrees. A second angle mesures 2x + 20 degrees and the third angle measures 4x - 20 degrees. What is the value of x
Answer:
Step-by-step explan 3x+2x+20+4x-20=180. 9x=180 X=180÷9. X=20
According to a 2009 Reader's Digest article, people throw away approximately 10% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 100 grocery shoppers to investigate their behavior. What is the probability that the sample proportion exceeds 0.02?
Answer: 0.9962
Step-by-step explanation:
Given : According to a 2009 Reader's Digest article, people throw away approximately 10% of what they buy at the grocery store.
i.e. the proportion of the people throw away what they buy at the grocery store [tex]p=0.10[/tex]
Test statistic for population proportion : -
[tex]z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}[/tex]
For [tex]\hat{p}=0.02[/tex]
[tex]z=\dfrac{0.02-0.1}{\sqrt{\dfrac{0.1(1-0.1)}{100}}}\approx-2.67[/tex]
Now by using the standard normal distribution table , the probability that the sample proportion exceeds 0.02 will be :
[tex]P(p>0.02)=P(z>-2.67)=1-P(z<-2.67)=1-0.0037925\\\\=0.9962075\approx0.9962[/tex]
Hence, the probability that the sample proportion exceeds 0.02 =0.9962
From a statistical point of view, considering a normal sampling distribution with the known population proportion (10% or 0.10), the probability that the sample proportion of grocery shoppers throwing away groceries exceeds 0.02 or 2% is almost certain (0.996). This is calculated considering the Z-score for 0.02 using standard deviation calculated using the Central Limit Theorem.
Explanation:This question is about the calculation of probability in relation to sampling distributions. In this case, we want to find out the probability that the sample proportion (the percentage of people who throw away groceries) exceeds 0.02 or 2%. Since the proportion of people who throw away groceries in the population (according to the Reader’s Digest article) is 10% or 0.10, the probability that the sample proportion exceeds 0.02 is basically 1, because 0.02 is significantly less than 0.10.
However, to apply this concept accurately, we need to consider the distribution for the sample proportion, which is approximately normal with a mean equal to the population proportion (0.10) and a standard deviation calculated as sqrt[(0.10*(1-0.10))/100] = 0.03, according to the Central Limit Theorem. Given this, the Z-score for 0.02 was calculated using Z = (sample proportion - population proportion)/standard deviation = (0.02-0.10)/0.03 = -2.67.
Looking up this Z-score in a standard normal table or using a probability calculator shows that the probability of getting a score this extreme or more (Z <= -2.67) is close to 0.004. Therefore, the probability that the sample proportion exceeds 0.02, in other words that Z > -2.67, is 1 - 0.004 = 0.996. So, it is almost certain (with a probability of 0.996) that the sample proportion will exceed 0.02.
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