Answer:
By simplifying the expressions we get,
-6x^{2}+x+7
Step-by-step explanation:
Answer:
-6x^2+x+7
Step-by-step explanation:
-6x^2+x+7
Eric and Nancy both had a successful year selling fish tanks for theirrespective employers, and so they were both given raises.Eric: Eric's base salary is still $1400, but now he makes a commission of$100 for each fish tank that he sells.Nancy: Nancy now gets a base salary of $500 per month, but her commissionhas stayed the same at $250 per fish tank.Eric and Nancy still want to make sure that they contribute the same amountto their total monthly income, and Nancy proposes using algebra to figureout how many fish tanks that they would each need to sell. She tells Ericthat he can calculate his monthly income by using the formula f(x) = 100x +1400. She says that she can calculate her own salary by using the functiong(x) = 250x + 500.1.How many fish tanks would each person need to sell so that they made the same amount of money
For this question, since we need to show that Eric and Nancy contributes the same amount to their monthly income, we just need to equate both expressions with each other, and then solve for the value of x.
\(f(x)=g(x)\)\(100x+1400=250x+500\)\(100x-250x=500-1400\)\(-150x=-900\)\(\frac{-150x}{-150}=\frac{-900}{-150}\)\(x=6\)In order to check if we got the right answer, we just need to substitute the value of x to both equations.
\(100x+1400=250x+500\)\(100(6)+1400=250(6)+500\)\(600+1400=1500+500\)\(2000=2000\)Therefore, we can conclude that Eric and Nancy has to sell 6 fish tanks each.
suppose felino deposited $1500 in the bank for 3 years. he makes $112.50 in simple interest at the end of the 3 years. find the annual interest rate
Give an example of a pair of series an and bn with positive terms where limn rightarrow infinity (an/bn) = 0 and bn diverges, but an converges. (Note this demostrates the contrapositive of the limit comparison test: "If one of an and bn converges and the other diverges, then limn rightarrow infinity (an/bn) = 0 or infinity or DNE. ")
Example that demonstrates the contrapositive of the limit comparison test. Let's consider a pair of series an and bn with positive terms, where lim(n→∞)(an/bn) = 0, bn diverges, but an converges.
Let's define the series an and bn as follows:
- an = 1/\(n^2\)
- bn = 1/n
Now, let's examine the limit:
lim(n→∞)(an/bn) = lim(n→∞)((1/\(n^2\)) / (1/n))
To simplify the limit expression, we multiply both numerator and denominator by \(n^2\):
lim(n→∞)(\(n^2\)(1/\(n^2\)) / \(n^2\)(1/n)) = lim(n→∞)(n/\(n^2\)) = lim(n→∞)(1/n)
As n approaches infinity, the limit becomes:
lim(n→∞)(1/n) = 0
Now, let's check the convergence of the series an and bn:
- an = Σ(1/\(n^2\)) is a convergent p-series with p = 2 > 1.
- bn = Σ(1/n) is a divergent p-series with p = 1.
Thus, we have provided an example of a pair of series an and bn with positive terms, where lim(n→∞)(an/bn) = 0, bn diverges, but an converges. This demonstrates the contrapositive of the limit comparison test, as requested.
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the carrying capacity for a population of elk is 52. there are currently 33 elk in the population. the intrinsic growth rate of elk is 0.2 per year. how many elk will be in the herd one year from now? round to a whole number, up or down (we will accept either)
There will be 38 elk in the herd one year from now, rounded to a whole number.
To solve the given problem, we must use the formula for exponential growth or decay.
We'll use the following formula:
N = N0ert
Where,N is the final population;
N0 is the initial population;
r is the intrinsic growth rate;
e is the base of the natural logarithm; and
t is the time (in years).
According to the problem, the carrying capacity for a population of elk is 52, and there are currently 33 elk in the population.
The intrinsic growth rate of elk is 0.2 per year. We need to find out how many elk will be in the herd one year from now, rounded to a whole number.
Using the formula above, we can write:
N = 33e0.2 × 1= 37.98 ≈ 38
Therefore, there will be 38 elk in the herd one year from now, rounded to a whole number. Answer: 38.
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The angle of elevation to a building in the distance is 22°. You know that the building is approximately 450ft tall. Estimate the distance to the base of the building
Answer:
1114 ft
Step-by-step explanation:
tan 22°=450/d
==>d=450/tan 22°=1113.7890... ≈1114 (ft)
The research team wishes to understand the difference in rates of midwesterners who regularly pay extra for guacamole when offered versus californians. The team will take a random sample of 100 midwesterners and 100 californians to estimate the difference in the rates. What should the researcher do?.
When we want to estimate a population parameter then we use hypothesis test.
What is hypothesis test?
In hypothesis testing, an analyst examines a statistical sample with the aim of demonstrating the plausibility of the null hypothesis.
By measuring and reviewing a representative sample of the population under study, statistical analysts test a hypothesis. All analysts use a random population sample to test the null hypothesis and the alternative hypothesis.
Main body:
As the researchers want to understand the difference between to states they need to do a hypothesis test.
Hence a hypothesis test is done.
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show that if f(x) and g(x) are functions such that f(x) is o(g(x)) and c is a constant, then cf(x) is o(g(x)), where (cf)(x) = cf(x).
From the given data, lim x->∞ (cf(x))/g(x) = 0, which means that cf(x) is o(g(x)). Therefore, we have shown that if f(x) is o(g(x)) and c is a constant, then cf(x) is also o(g(x)).
A positive constant function is a function that always returns a fixed positive value, regardless of the input.
Given that f(x) is o(g(x)), we know that:
lim x->∞ f(x)/g(x) = 0
We want to show that cf(x) is also o(g(x)), which means we need to show that:
lim x->∞ (cf(x))/g(x) = 0
We can rewrite (cf(x))/g(x) as:
c (f(x)/g(x))
Since f(x)/g(x) approaches 0 as x approaches infinity, we know that for any positive constant ε, there exists a positive constant M such that:
|f(x)/g(x)| < ε/|c|
for all x > M
Multiplying both sides by |c|, we get:
|cf(x)/g(x)| < ε
for all x > M
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How do you tell if a slope is steeper or flatter?
Lines have a larger m value, that is, m > 1 have steeper slope and lines having an m value between 0 and 1, usually in the form of a fraction have a flatter slope .
Slope is the rate of change in the dependent variable with respect to the independent variable.
For an equation of line of the type - y= mx +c , the slope is given by the m value.
Now, if the value of m > 1 like m=1,2,3, ... , the lines have a steeper slope and have a steep nature.
Similarly, if the value of m < 1 i.e. 0 < m < 1 like m=1/2,2/3, ... fractional values, the lines have a flatter slope and do not have a steep nature.
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Camila is competing in a 26-mile race. She runs at a constant speed of 12.5 mi/h. Write an equation in slope intercept form to represent
the distance Camila has left to run after x hours. How many hours will it take her to finish the race?
Answer:
2.08 or 2
Step-by-step explanation:
26 = 12.5x
y=mx+b
it will approximately take 2 hours, but to be exact, 2.08
6-x-3=4x+12 solve for x
Answer: x =-9/5
Step-by-step explanation:
Amelia is saving up to buy a new $105 iPad pen. Her best friend gave her $12 and she saves $20 per week from her babysitting job. How many weeks will she have to save money in order to buy the iPad? Write an inequality to solve.
EXPLANATION
Let's see the facts:
Ipad pen cost = -$105
Best friend ----> +$12
---------------
-$93
Babysitting Saves +$20/week
We are still needing $93 dollars to buy the pen, so, if she earns $20 peer week, then she should work:
$93 = 20 $/week * number of weeks
Calling x to the number of weeks and turning this into an inequality:
12 + 20x ≥ 105
Subtracting -12 to both sides:
20x ≥ 105-12
Simplifying:
20x ≥ 93
Dividing both sides by 20:
x ≥ 93/20
Simplifying:
x ≥ 4.65
Answer: Amelia should at least work 5 weeks in order to save the money to buy the Ipad pen.
13. For a given set of data, what does the standard deviation measure?
The difference between the mean and the data point farthest from the mean
The difference between the mean and the data point nearest to the mean
The difference between the mean and the median
None of the above
Source
The standard deviation measures the spread of data points around the mean. It considers all data points, not just the farthest or nearest ones. A higher standard deviation indicates a greater spread.
The standard deviation is a statistical measure that tells us how much the data points in a set vary from the mean. It provides information about the spread or dispersion of the data. To calculate the standard deviation, we take the square root of the variance, which is the average of the squared differences between each data point and the mean.
By considering all data points, the standard deviation provides a comprehensive measure of how spread out the data is. Therefore, the statement "The difference between the mean and the data point farthest from the mean" is incorrect, as the standard deviation does not focus on just one data point.
The statement "The difference between the mean and the data point nearest to the mean" is also incorrect because the standard deviation takes into account the entire data set. The statement "The difference between the mean and the median" is incorrect as well, as the standard deviation is not specifically related to the median.
Hence, the correct answer is "None of the above."
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(3x869)+(19x528)+428(3)(1049)=a
a=
The value of a in the equation (3x869)+(19x528)+428(3)(1049)=a is 1359555
How to evaluate the expression?From the question, the equation to evaluate is given as
(3x869)+(19x528)+428(3)(1049)=a
Rewrite the above equation to make it legible
So, we have the following equation
(3 x 869) + (19 x 528) + 428(3)(1049) = a
Evaluate the products in the expression
So, we have the following equation
2607 + (19 x 528) + 428(3)(1049) = a
Evaluate the other products in the expression
So, we have
2607 + 10032 + 428(3)(1049) = a
Remove the brackets in the equation
So, we have the following equation
2607 + 10032 + 1346916 = a
Evaluate the sum
1359555 = a
Rewrite as
a = 1359555
Hence, the solution to the equation is 1359555
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please help me solve and you'll get a brainlist
Identify the x and y-intercepts of the graph for the given equation in slope intercept form:
y=4x+1
Question 4 options:
x-intercept: (0, 4)
y-intercept: (1, 0)
x-intercept: (0, 1)
y-intercept: (−14, 0)
x-intercept: (1, 0)
y-intercept: (0, 4)
x-intercept: (−14, 0)
y-intercept: (0, 1)
awnser for brainlist
Answer:
10/20-8/20=2/20
Step-by-step explanation:
Help me pleaseeeeeee
Answer:
See below ~
Step-by-step explanation:
A lies between 665 and 670.
Let's answer the questions asked.
A rounded to the nearest ten
As the ones place value of A is clearly greater than 5, it will round upThe nearest ten is 670A rounded to the nearest hundred
As the tens place value of A is greater than 5, it will round upThe nearest hundred is 700Answer:
try 660
Step-by-step explanation:
because get to think it already says 670 and 680 so i believe the answer is 660
what is the volume of the following triangular prism? 288 ft^3480 ft^396 ft^3576 ft^3
The volume of the triangular prism = base area x height
Since its base is a right triangle, then
\(B\mathrm{}A=\frac{1}{2}\times leg_1\times leg_2\)From the figure leg1 = 6 ft and leg2 = 8 ft
\(\begin{gathered} BA=\frac{1}{2}\times6\times8 \\ BA=24ft^2 \end{gathered}\)Now multiply it by the height of the prism
Since its height = 12 ft, then
\(\begin{gathered} V=24\times12 \\ V=288ft^3 \end{gathered}\)The answer is A
HELPPPPPPPPPPPPPPPPPPPPPPP
The temperature at 7:00 a.m. was –9°F. By 4:00 p.m., the temperature had risen 10 degrees. What was the temperature at 4:00 p.m.?
Group of answer choices
-19
19
-1
1
Answer:
1
Step-by-step explanation:
-9+10=1
Answer:
1
Step-by-step explanation:
HELP QUICK!! solve by substitution and show work please
Answer: You should solve by equal method not substitution. y=7 x=2
Step-by-step explanation: Equal value method is when two things equal each other and in this case both 3x+1 and 5x-3 equal y so they also equal each other. 3x+1=5x-3 add 3 to each sides
3x+4=5x subtract 3x from each side
4=2x divide by 2
x=2 solve for y=3x+1
y=3(2)+1
y=7
each statement is false correct the given statement to make it
true
1. If f(x)=x2 then f(x+h)=x2+h2
2. For a function written in the form f(a)=b, we would say that " a is a function of b."
1) Therefore, if f(x) = x², then f(x + h) = x² + 2xh + h² and 2) Therefore, to make the statement true, we need to swap "a" and "b". We can say that "a is a function of b" to mean that "b determines the value of a".
1. If f(x) = x² then f(x + h) = (x + h)². The correct way to write this statement to make it true is:
If f(x) = x² then f(x + h) = x² + 2xh + h².
For a function written in the form f(a) = b, we would say that "b is a function of a.
"The correct way to write this statement to make it true is:
For a function written in the form f(a) = b, we would say that "a is a function of b."Explanation:1.
To correct the given statement, we can use the formula for the square of a binomial:
(a + b)² = a² + 2ab + b². If we let a = x and b = h, we can write:
f(x + h) = (x + h)²= x² + 2(x)(h) + h²= x² + 2xh + h²
Therefore, if f(x) = x², then f(x + h) = x² + 2xh + h².
2. The statement given is incorrect because the independent variable is usually represented by "x" in a function, and the dependent variable is represented by "y" or "f(x)".
Therefore, to make the statement true, we need to swap "a" and "b". We can say that "a is a function of b" to mean that "b determines the value of a".
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3. The price of a pair of shoes is $64.00 plus 9% sales tax. What is the sales tax on this pair of shoes in dollars and cents? A. $5.76 B. $57.60 $69.716) D. $78.00
Step-by-step explanation:
To figure out this answer, you need to figure out how much 9% is in $64.00
? 9
------- = --------
64 100
Now to solve this you have to multiply diagonally and divide the neighbor
(let me explain)
basically in this case, you would multiply 64 and 9, then divide by 100
64 * 9 = 576
576 / 100 = $5.76
In short: your answer is 'A' $5.76
Hope this helps <3
if (5,b-7) lies on x axis, then b=?
Solving a simple linear equation we can see that the value of b is 7.
How to get the value of b?Here we have the point (5, b - 7) and we want to find the value of b such that the point lies on the x-axis.
Remember that a point lies on the x-axis only if the y-value is zero, so we need to solve the linear equation:
b - 7 = 0
Adding 7 in both sides we get:
b - 7+ 7 = 0 + 7
b = 7
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Given a linked chain of integers reference by the variable head which contains data 20, 30, 10, 5 in that order. consider the impact of the execution of the following lines of code:__________
Given a linked chain of integers reference by the variable head which contains data 20, 30, 10, 5 in that order. consider the impact of the execution of the following lines of code 65
Suppose we have the following lines of code:
integer sum = 0;
Node current = head;
while (current != null) {
sum += current.data;
current = current.next;
}
print(sum);
Line 1 initializes a variable called "sum" to 0. Line 2 initializes a pointer called "current" to the head of the linked list.
Line 3 starts a while loop that will execute as long as the "current" pointer is not null.
Line 4 adds the value of the "data" field of the current node to the "sum" variable.
Line 5 updates the "current" pointer to point to the next node in the sequence.
Line 6 closes the while loop.
Line 7 prints the final value of the "sum" variable.
When the above lines of code are executed, the program will iterate through each node in the linked list, starting from the head. At each node, it will add the value of the "data" field to the "sum" variable. After iterating through all the nodes, the final value of the "sum" variable will be printed.
In this case, the sum of the integers in the linked list is 20 + 30 + 10 + 5 = 65. Therefore, the output of this program will be "65".
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The Meridian girl's basketball team scored a
total of 80 points in a basketball game.
Meridian made a total of 37 two-point and
three-point baskets. How many two-point
shots and three-point shots did they make?
First complete the equations below, where x stands for two-point shots and y stands for three-point shots.
2x
+
3y
= 80; x + y = 37
Now use the equations to find the number of 2-point shots and 3-point shots.
2-point shots: [?]; 3-point shots:
Use substitution or Elimination method. The number of two-point shots made by the team is 31. The number of three-point shots made by the team is 6.
The number of two-point shots and three-point shots made by the Meridian girl's basketball team, we can solve the system of equations:
Equation 1: 2x + 3y = 80
Equation 2: x + y = 37
We can use substitution or elimination method to solve this system. Let's use the substitution method.
From Equation 2, we can express x in terms of y:
x = 37 - y
Now substitute this value of x in Equation 1:
2(37 - y) + 3y = 80
74 - 2y + 3y = 80
74 + y = 80
y = 80 - 74
y = 6
So, the number of three-point shots made by the team is 6.
Now substitute the value of y in Equation 2 to find x:
x + 6 = 37
x = 37 - 6
x = 31
Therefore, the number of two-point shots made by the team is 31.
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A cylinder has height of 7 inches and a base with a diameter of 9 inches.
whats the volume ? Round to the nearest tenths if needed.
Will mark b if correct!!:)
Answer:
527.6 cubic inches
Step-by-step explanation:
The volume of a cylinder is represented by the formula \(V = \pi r^{2} h\), where r represents the radius of the base and h represents the height.
In this question, the diameter is given as 9 inches. Since the radius is half the diameter, the radius will be 4.5 inches.
Substituting in the values and solving, we get:
\(V =9 \pi (4.5)^{2}\\V = 9\pi(20.25)\\V = 182.25\pi\\V = 572.6\)
The Volume will be 527.6 cubic inches
Please help, thankssss
Answer:
Option 3 and 4
Step-by-step explanation:
The amount she drank plus 10 equals 24 ounces, and rearranged, proves that 24 minus 10 ounces equals the amount of water she drank.
Answer:
C and D are the correct answers because you have to do the same work for the answer and those are the only equations that will help you find x
hope this helps
Explain the differences between adding and multiplying radical expressions using 2 examples you create.
Answer:
When you multiply radical expressions you multiply the numbers under the radical symbols.3–√×7–√=21−−√
When you add radical expression you CANNOT add the numbers under the radical symbols.
3–√+7–√≠10−−√
Step-by-step explanation:
The radius of a sphere is 81cm, what is the volume
Answer:
The volume of a sphere is given by the formula:
V = (4/3)πr³
where r is the radius.
Substituting the given value of r=81cm, we get:
V = (4/3)π(81)³
V = (4/3)π(531441)
V = 904779.5π
Therefore, the volume of the sphere is approximately 2,847,892.22 cubic centimeters (rounded to two decimal places).
Volume of the sphere is 708588π cm³ when the radius of a sphere is 81 cm and formula is \(\frac{4}{3} \pi r^3\).
Given that,
The radius of a sphere is 81 cm.
We have to find what is the volume of the sphere.
We know that,
The amount of area occupied within a sphere is referred to as its volume. Every point on the surface of the sphere is equally spaced from its center, creating a three-dimensional round solid object.
The formula for the volume of the sphere is \(\frac{4}{3} \pi r^3\).
So,
r is the radius of the sphere is 81 cm.
We get,
Volume of the sphere = \(\frac{4}{3} \pi (81)^3\)
Volume of the sphere = 4×π×27×81×81
Volume of the sphere = 708588π cm³
Therefore, Volume of the sphere is 708588π cm³.
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Marco's mom gave him d dollars for his allowance one week. He also earned $ 14.55 dollar sign, 14, point, 5 for his newspaper route that week.
The total amount of money that Marco has that week would be = $ d + 14.55.
What is an allowance income?An allowance income is defined as the amount of money an individual earns that can be used to solve their personal needs.
Marco received double payment, an allowance from the mother and from newspaper route.
The total amount of money received from his mother for allowance for that same week = $ d
The amount of money he earned from his newspaper = $14.55
Therefore the total amount of money Marco has that week =$ d + 14.55
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Complete question:
Marco's mom gave him d dollars for his allowance one week. He also earned \$14.55$14.55dollar sign, 14, point, 55 for his newspaper route that week.
How much money does Marco have?
Write your answer as an expression.