Of all numbers x and y whose sum is​ 50, the two that have the maximum product are xequals=25 and yequals=25. that​ is, if xplus+yequals=​50, then xequals=25 and yequals=25 maximize qequals=xy. can there be a minimum​ product? why or why​ not?

Answers

Answer 1

x + y = 50 

Q = x * y 

 

Combining the two:
Q = x * (50 - x) 
Q = 50x - x^2 
Q = -x^2 + 50x 
Q = -(x^2 - 50x) 
Q = -(x^2 - 2 * 25x + 25^2 - 25^2) 
Q = 25^2 - (x - 25)^2 
Q = 625 - (x - 25)^2 

So what we got is an equation for parabola with a vertex at (25 , 625) and it opens downward. We know that parabolas only have one critical value, so if x and y are unrestricted, then there's no minimum product.

 

 

Answer 2
Final answer:

No, there cannot be a minimum product. The product of two numbers is maximized when the numbers are equal or close to each other.

Explanation:

The student is asking if there can be a minimum product when x and y are numbers whose sum is 50 and we are trying to maximize the product xy. The answer is no, there cannot be a minimum product. This is because the product of two numbers is maximized when the numbers are equal or close to each other. In this case, when x = 25 and y = 25, the product xy is maximized at 625. If x and y were further apart, the product would be smaller.

Thus,

Q = x * (50 - x)

Q = 50x - x^2

Q = -x^2 + 50x

Q = -(x^2 - 50x)

Q = -(x^2 - 2 * 25x + 25^2 - 25^2)

Q = 25^2 - (x - 25)^2

Q = 625 - (x - 25)^2


Related Questions

A picture is enlarged by keeping its width the same and increasing its length. The scatter plot shows the perimeter of the picture (y) for different lengths (x):

Answers

Since you have not included the plot, I'll just tell you how to find the function of the graph that you are looking for.
Function of the straight line has the general formula: y = mx + c
where: 
m is the slope of the line and c is the y-intercept

So first we will need to find the slope (m):
Taking two points from the graph (x1,y1) and (x2,y2), the slope can be calculated as follows:
m = (y2-y2) / (x2-x2)

Then, we will need to find the y intercept.
we have the equation y = mx + c and we have m calculated
Take any point that belongs to the line and substitute with the values of x,y and m and then calculate c.

Now you have both m and c calculated, just substitute with the values in the formula.

Answer: This is the CORRECT answer ----> y = 2x + 20

Step-by-step explanation: slope, y2 - y1/x2 - x1

replace it with these numbers 120 - 60/50 - 20=60/30

than,simplified it we get 2/1. so, now we  have the slope of our equation

y = 2x + b. but we still have b (or where the y intersects.) now are slope we have to change it to 1/2 because we are going backwards. So multiply 60 by .5, Thus will give us 30

Now we have y = 2x + 30, But that's not one of your answer,

So y = 2x + 20 cant be -20 because this is a positive y intersect and We know it is a slope of 2.

Therefore the answer is : y = 2x + 20

ALSO I know it's correct because I got it right on the test!! Hoped I helped :))

At the city museum, child admission is $5.20 and adult admission is $8.50 . on friday, three times as many adult tickets as child tickets were sold, for a total sales of $1074.50 . how many child tickets were sold that day?

Answers

202 child tickets were sold.

What is the slope of the line that passes through the points (-3,-3) And (-9,5) ?

Answers

slope = (5 + 3)/(-9 + 3)
slope = 8/-6
slope = -4/3

hope it helps

Hello!

Step-by-step explanation:

Slope: [tex]\frac{Y^2-Y^1}{X^2-X^1}=\frac{rise}{run}[/tex]

[tex]\frac{5-(-3)=5+3=8}{(-9)-(-3)=-9+3=-6}=\frac{8}{-6}=\frac{8/2}{-6/2}=\frac{4}{-3}[/tex]

Slope is -4/3

Answer is -4/3

Hope this helps!

-Charlie

Thank you!

:)

:D

Help Pre calc!
Identify the x values for which f(x) >- 2
I think the answer would be -2 <= x <= 2?

Answers

check the picture below.

bear in mind that, for negative values, the closer to 0, the greater, so, -3 for example is greater than -1,000,000.

A social worker examines the level of aggression (measured on a 100-point scale) of four groups of individuals before they begin anger management classes. using the weighted mean, determine the overall mean level of aggression for all four groups. group 1: mean = 82, n = 15; group 2: mean = 87, n = 12; group 3: mean = 93, n = 22, and group 4: mean = 79, n = 11

Answers

To answer this item, what needs to be done first is to determine the total of the values per group by multiplying the mean by the number of people in the group.

Group 1:    (82)(15) = 1230
Group 2:    (87)(12) = 1044
Group 3:    (93)(22) =  2046
Group 4:    (79)(11) =   869

Then, we add up the products to determine the overall total
        Overall total = 1230 + 1044 + 2046 + 869 = 5,189

Then, we divide the overall total by the total number of people in four groups
    total number of people = 15 + 12 + 22 + 11 = 60
 
         Overall mean = 5,189 / 60 = 86.48

Therefore, the answer is ~86.5. 

Solve for a. 15(25−5a)=4−a
A- 0
B-−1
C-all real numbers
D- no solution

Answers

the answer is d- no solutions

Answer: Option 'D' is correct.

Step-by-step explanation:

Since we have given that

[tex]\dfrac{1}{5}(25-5a)=4-a[/tex]

We need to find the value of 'a'.

First we simplify the brackets :

[tex]\dfrac{1}{5}(25-5a)=4-a\\\\25-5a=5(4-a)\\\\25-5a=20-5a\\\\25-20=-5a+5a\\\\5=0[/tex]

which is wrong.

Hence, there is no solution.

Therefore, Option 'D' is correct.

What expression completes the equation 30/2+10

A. 3(2+3)
B. 7(2+1)
C. 6(3+7)
D. 5(4+1)

Answers

30/2 = 15

30/2 + 10 = 15 +10 = 25

5(4+1) = 5 x 5 = 25

Your answer is D

what is the algebraic expression for the following word phrase: the sum of 5 and 2x?

a. 7x
b. 5+2
c. 5x +2x
d. 5+2x
(please choose the correct one)

Answers

the sum of 5 and 2x :  5 + 2x 

You can't add this because they are not like terms

List in order the specific operations that you would use to isolate X in the following equation show the step that corresponds to each operation

7 + 3 (2 - 3x) = 67

Answers

7 + 3.(2 - 3x) = 67
3 brackets are distributed

7+6-9x = 67
13-9x = 67
-9x = 67
x = 67/-9

Which age group is appropriate to receive the 2-dose hpv9 vaccine series?

Answers

2-Dose hpv9 vaccine can be given to the kids started at the age of 9 to 14. It can be given to the girl or boy 6 months once is perfect. Before 15th birthday the 2 doses good to the kids.
Final answer:

The 2-dose HPV9 vaccine series is appropriate for individuals between the ages of 9 and 14, according to the CDC.

Explanation:

The 2-dose HPV9 vaccine series is appropriate for individuals between the ages of 9 and 14 years old, according to the Centers for Disease Control and Prevention (CDC).

It is recommended to receive the first dose at the age of 11 or 12, and the second dose 6 to 12 months after the first dose.

If the vaccine series is started after the age of 14, three doses are required for full protection.

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Round 90608.5881594 to 1 decimal place

Answers

90608.6 is the answer

 Remember if the number after this line is less than 5 round down, or round up if the number is 5 or above.

Answer:

90608.6

Step-by-step explanation:

Round 90608.5881594 to 1 decimal place

To round the answer to 1 decimal place , we round the answer to nearest tenth.

In the given number , 5 after decimal point is in tenths place

8 is in hundredths place

Here 8 in hundredths place is greater than 5. If it is greater than 5 then we add 1 in tenths place

So 5 in tenths place becomes 6

90608.5881594 to 1 decimal place is 90608.6

Subtract the following military times: 2330 - 0540

Answers

Final answer:

To find the difference between two times in military format, convert each time to minutes. Subtract the later time from the earlier one, and then convert the result back to hours and minutes. The difference between 2330 and 0540 is 17 hours and 50 minutes.

Explanation:

To calculate the difference between two military times, we first need to understand that military time runs on a 24-hour clock rather than a 12-hour clock. In this instance, you are being asked to subtract 05:40 from 23:30.

First, it would be easier to convert these times into minutes. So, 23:30 becomes (23*60) +30 = 1410 minutes. Similarly, 05:40 becomes (5*60) +40 = 340 minutes.

Then we subtract the two: 1410 - 340 = 1070 minutes. Now, we convert it back to hours and minutes. There are 17 hours and 50 minutes in 1070 minutes. Therefore, the difference between 2330 and 0540 in military time is 1750 or 17 hours and 50 minutes.

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Final answer:

To subtract the military times 2330 from 0540, convert 1 hour to 60 minutes, add to the minutes of 2330, and then subtract both the hours and minutes separately. The result is 17 hours and 50 minutes.

Explanation:

Subtracting military times requires understanding the 24-hour clock system and being able to handle situations where you must "borrow" time from one hour to subtract minutes from another. To subtract 2330 (11:30 PM) from 0540 (5:40 AM), we need to do the following:

First, recognize that 2330 is later than 0540, so we will be finding how much time elapses from 0540 to 2330.Since we cannot subtract a larger minutes unit from a smaller one, we convert one hour from the hour's digit of 2330 into 60 minutes and add this to the 30 minutes already present, giving us 90 minutes.Now we have 22 hours and 90 minutes.Subsequently, subtract the minutes: 90 - 40 = 50 minutes.Finally, subtract the hours: 22 - 5 = 17 hours.

The result is 17 hours and 50 minutes.

Write 0.76 as a fraction. then looking at the decimal, circle t for terminating or r for repeating

Answers

0.76
100. Equals 131 ,so its a T

Each marble bag sold by jenny's marble company contains 3 yellow marbles for every 5 orange marbles. if a bag has 15 yellow marbles, how many orange marbles does it contain?

Answers

it would contain 25 Orange marbles

Chris had a tin of 24 cookies he has eaten 2/4 of the cookies how many cookies did he eat

Answers

12 because half of 24 is 12 and 2/4 simplified is 1/2.
He Ate 12 Cookies Because Half Of 2/4=1/2 and half of 24 equals 12

How do u graph linear equations like this where it's just y=-5x ?Plz explain

Answers

Calculate the y value for a bunch of x values.

E.g. x=0: y=-5*0 = 0, plot the point (0,0)
x=1: y=-5*1=-5, plot the point (1,-5)

repeat the process until you are confident to draw a smooth line through it. For straight lines two points suffice. In this example I'd choose them sufficiently far apart, like x=-4 and x=+4.

Question 3(Multiple Choice Worth 5 points) (01.06) Jack and Jill had 5 pails of water. Each trip up the hill, Jack and Jill obtained 2 more buckets of water. Which of the graphs below represents Jack and Jill's number of pails over time? graph of line going through 1, 7 and 2, 12 graph of line going through 1, 7 and 3, 11 graph of line going through 2, 6 and 4, 7 graph of line going through 0, 2 and 6, 3

Answers

It's B 1,7 and 3,11 hops this helped
Answer:

The graph which represents Jack and Jill's number of pails over time is:

   graph of line going through (1,7) and (3,11) Step-by-step explanation:

It is given that:

Jack and Jill had 5 pails of water. Each trip up the hill, Jack and Jill obtained 2 more buckets of water.

Let x be the number of hills they tripped.

and y denote the number of buckets of water they have.

Then the equation which represent the relationship between y and x is:

             [tex]y=5+2x[/tex]

On making  a table for x and y:

        x             y

        1              7

        2             9

        3             11

        4             13

        5             15

        6             17

Hence, the graph will pass through the points (1,7) (2,9) (3,11) (4,13) (5,15) (6,17) and many more.

A=12h(a+b) Solve for h.

Answers

Final answer:

The equation can be solved for h by isolating h on one side. This is achieved by dividing A by 12(a+b), resulting in h = A / 12(a+b).

Explanation:

To solve for h in the equation A=12h(a+b), we first need to isolate h. This can be done by dividing both sides of the equation by 12(a+b). Therefore, the equation becomes: h = A / 12(a+b).


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To find the height h in A = 12h(a + b), isolate h by dividing both sides by 12(a + b), yielding [tex]\( h = \frac{A}{12(a + b)} \)[/tex]. This formula relates height to area and base lengths in geometric contexts.

To solve for h in the equation A = 12h(a + b), we need to isolate h on one side of the equation. Begin by dividing both sides by 12(a + b):

[tex]\[ \frac{A}{12(a + b)} = h \][/tex]

This gives us the expression for h. The solution is [tex]\( h = \frac{A}{12(a + b)} \)[/tex]. This formula represents the height h in terms of the area A, and the values of a and b.

The denominator 12(a + b) reflects the combined base lengths scaled by 12, and the height h is determined by the ratio of the given area A. This formula allows you to compute the height when the area and base lengths are known, providing a versatile tool for various geometric applications, especially in contexts like rectangular shapes or parallelograms.

Let −→ ab= h2, −3, −1i. if the coordinates of a are (2, −1, 5), what are the coordinates of the point b?

Answers

the answer to that is -2 and -3

License plates in a particular state display 22 letters followed by 44 numbers. how many different license plates can be manufactured for this​ state?

Answers

Since there are 26 letter choices for the first spot, and 26 for the next, etc. we get 26^22 for the first 22 letters. For the 44 numbers, we have 10^44 due to that there are 10 options for the first number, and it doesn't matter what it is - there's still 10 options for the next number. In addition to that, for each number you put in the first slot, there are 10 ways to put numbers in the second slot, etc..

26^22*10^44 is your answer  due to that if you think of it as 2 numbers in a row at this point, there are 10^44 different numbers for each different letter change in those 26^22.

The number of unique license plates are [tex]26^{22}[/tex] for the letters and [tex]10^{44}[/tex]for the numbers, then multiply the two results.

Each letter on the license plate can be any one of the 26 letters in the English alphabet.

So, for 22 letters, the total possible combinations are calculated as:

[tex]26^{22}[/tex]

Each number on the license plate can be any one of 10 digits (0 through 9).

So, for 44 numbers, the total possible combinations are calculated as:

[tex]10^{44}[/tex]

So, the total number of different license plates can be found by multiplying these two results:

Total combinations = [tex]26^{22}[/tex] × [tex]10^{44}[/tex]

geometry help me please

Answers

First Answer: Transitive property of Equality

Explanation: If x = y and z = y, then x = z. This is the basic template. In this case, both left side expressions of the problem are equal to 180, so they must be equal

-------------------------------------------------------

Second Answer: Alternate Interior Angles Theorem

Explanation: These angles are on the inside of the parallel line train tracks (hence the "interior") and they are on opposite sides of the transversal line (hence the "alternate"). Alternate interior angles are congruent if the lines are parallel, which they are in this case.

if <PQR measures 75°, what is the measure of <SQR?

Answers

To f ind this subtract PQS from PQR:

75-22

53 

Hope this helps!
The answer is to this question is: 53°

Marissa is bu buying a shirt for each of her brothers and each of her 2 sisters. Each shirt costs $7.50 and she spends a total of $30. How many brothers does Marissa Have?

Answers

4 brothers because you have to divide the money that she pended and how much did each shirt costed.
hope it helps

Using an equation, Marissa has 2 brothers with her 2 sisters, making 4 siblings.

What is an equation?

An equation is a mathematical statement of the equality or equivalence of two or more mathematical expressions.

We can use an equation to solve the above problem.

The number of brothers that Marissa has = x

The number of sisters Marissa has = 2

The cost of each shirt = $7.50

The total amount spent = $30

The total number of shirts Marissa can buy with $30 = 4 ($30/$7.50)

Equation:

7.5x + 7.5(2) = 30

7.5x + 15 = 30

7.5x = 15

x = 2

Thus, Marissa has 2 brothers, based on the solved equation.

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For safety. the recommended height of a zebra fence is 5 ft. Because of uneven ground surfaces, the actual height of the fence can vary from recommendation by 3 inWrite and solve an absolute value equation to find the maximum and minimum heights of the fence. Then, find the maximum and minimum heights of the fence

Answers

Final answer:

The maximum and minimum heights for the zebra fence, considering the 3-inch allowance, are 5.25 feet (63 inches) and 4.75 feet (57 inches), respectively. This was computed by converting the standard height to inches, and applying an absolute value equation to figure out the range for the fence's height.

Explanation:

The recommended height of the fence is 5 ft, but this can vary by 3 inches due to uneven ground surfaces. The question asks for an equation to calculate the maximum and minimum heights.

To start, we need to convert all measurements to the same units. 5 feet is equivalent to 60 inches.

Next, we can set up the absolute value equation to represent the possible variation in height. This may look like |x - 60| ≤ 3. Here, x is the actual height of the fence.

Then, solve the equation to get our two possible results: x ≤ 60 + 3 and x ≥ 60 - 3. Therefore, the maximum and minimum heights of the fence are 63 inches (or 5.25 feet) and 57 inches (or 4.75 feet) respectively.

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write an equasion in slope-intercept form. What are the slope and y intercept? -2x - 11y = 5

Answers

Slope intercept form : y = mx+b

You are solving for y ...

- 2 x - 11 y = 5
+2x              +2x

- 11 y = 2x + 5   ...... Divide both sides by -11

y = -2/11 x -5/11

EQUATION : y = -2/11 x -5/11

SLOPE = -2/11 

Y INTERCEPT = -5/11

y=-2/11x-5/11 is the required slope intercept form

Slope is -2/11

y intercept is -5/11

The given equation is -2x-11y=5, We need to find the slope intercept equation, slope and y intercept.

What is slope intercept form of a line?

y=mx+c

m is the slope of the line

c is the y intercept of line

The given equation is -2x-11y=5

We need to separate the y variable to find the slope intercept form

-11y=5+2x

To convert the above equation to slope intercept form, we need to divide both sides by -11.

y=-5/11-2/11x

Therefore y=-2/11x-5/11 is the required slope intercept form for -2x - 11y = 5

Slope is -2/11

y intercept is -5/11

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Two non-perpendicular, non-bisecting, intersecting line segments definition

Answers

Line segments are parts of line that have fixed ends. For them to be perpendicular, the angle between them should be 90°. Bisecting lines are those that cut each other into two equal parts. If the lines intersect but the conditions above are not satisfied then, the lines are non-perpendicular and non-bisecting, intersecting lines. 

The area of circle h is 200.96 square feet. what are the radius and diameter of circle h? what is the circumference of circle h?

Answers

radius is 8

diameter is 16

curcumference is 50.24

how do you write the decimal 0.7 as a fraction in simplest form

Answers

0.7 is 7/10 in fraction form

It is also already in simplest form

7/10 is your answer

hope this helps

If f(x)=2x^2+1, what is f(x) when x=3

Answers

do you have choices if so i am pretty sure your answer would be b, if you need me to explain this answer please let me now because it is hard to type out and may not make sense to you but i can try 

The number of roses (r) in a garden increases when the number of weeds (w) decreases. Write the correct equation for this scenario, and solve for the number of roses when there are 5 weeds. Weeds Roses 10 20 20 10

Answers

Hello,

[tex]r= \dfrac{k}{w} \\ \textrm{if w=10 then r=20} ==\ \textgreater \ 20= \dfrac{k}{10} ==\ \textgreater \ k=200\\\\ \textrm{if w=5 then }\\\\ r= \dfrac{200}{5} =\boxed{40}[/tex]
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