Answer: 13/30 remaining
Step-by-step explanation:
well... 1 - 2/5 - 1/6 = 13/30 remaining
we use "1" to denote the money she began with
Mother is m years old, and she is four times as old as her daughter. How much older is the mother than her daughter?
To find out how much older the mother is than her daughter, we subtract the daughter's age (m/4) from the mother's age (m), resulting in the mother being three-fourths of her own age older than her daughter, which is 3m/4.
Explanation:The question relates to a linear equation in the context of ages. If the mother is m years old, and she is four times as old as her daughter, then the daughter's age would be m/4 years old. To find out how much older the mother is than her daughter, we subtract the daughter's age from the mother's age, which gives us m - (m/4). Simplifying this, we get 3m/4, which means the mother is three-fourths of her own age older than her daughter.
The quadratic function
R(p)= -5.2p^2 + 65p - 75
gives the amount of revenue R(p) in dollars generated by a product priced at p dollars.
Question: What is the maximum revenue that can be generated?
Answer:
The maximum revenue that can be generated is $128.13
Step-by-step explanation:
we have
[tex]R(p)=-5.2p^{2}+65p-75[/tex]
where
R(p) represent the amount of revenue in dollars
p the product price
This is a vertical parabola open downward
The vertex represent a maximum
so
The y-coordinate of the vertex represent the maximum revenue that can be generated
Solve by graphing
using a graphing tool
Graph the quadratic equation
The vertex is the point (6.25,128.125)
see the attached figure
the y-coordinate of the vertex is 128.125
therefore
The maximum revenue that can be generated is $128.13
hellppp
step for step please
Answer:
[tex]\left\{\begin{array}{l}x\ge 0\\ \\y\ge 0\\ \\x+y\ge 20\\ \\3.5x+5y\le 80\end{array}\right.[/tex]
Step-by-step explanation:
Let x be the number of small candles and y be the number of large candles.
Santhi needs to buy at least 20 candles, so
[tex]x+y\ge 20[/tex]
Small candles:
Cost of 1 small candle = $3.50
Cost of x small candles = $3.50x
Large candles:
Cost of 1 large candle = $5.00
Cost of y large candles = $5.00y
Total cost of all candles:
$3.50x + $5.00y
Thus,
[tex]3.5x+5y\le 80[/tex]
Using Desmos, plot the system of two inequalities:
[tex]\left\{\begin{array}{l}x+y\ge 20\\ \\3.5x+5y\le 80\end{array}\right.[/tex]
in a state with a population of 2000000 the average vitizen spends 6000 on housing each year. what is the total spent on housing for the state? express answer in a scientific notation
Answer:
[tex]1.2 \times 10^{10}[/tex] spents on housing for each year for the state.
Step-by-step explanation:
Given:
Population of State = 2000000
Average Citizen spends on housing = 6000
We need to find total spent on housing for the state.
For finding total spent on housing for state we need to multiply Population of state with average citizen spends on housing.
Total spent on housing for state = Population of State [tex]\times[/tex] Average Citizen spends on housing = [tex]2000000 \times 6000 = 12000000000[/tex]
Now expressing the above in scientific notation we get;
Total spent on housing for state = [tex]1.2 \times 10 ^{10}[/tex]
Final answer:
The total amount spent on housing for a state with a population of 2,000,000, where each spends $6,000 annually, is $12,000,000,000, which is expressed in scientific notation as[tex]$1.2 x 10^{10}.[/tex]
Explanation:
The question asks us to calculate the total amount spent on housing for a state with a population of 2,000,000, where the average citizen spends $6,000 on housing each year. To find the total, we multiply the average spending per citizen by the total number of citizens, which is 2,000,000 citizens times $6,000 per citizen. The calculation is:
2,000,000 x $6,000 = $12,000,000,000
To express this astronomical sum of money in scientific notation, we convert the standard form into a product of a number between 1 and 10 multiplied by a power of 10. So:
$12,000,000,000 = [tex]$1.2 x10^{10}[/tex]
Help me plz can’t figure this one out
Answer:488
Step-by-step explanation:
1464 divided by 3=488
If A={2,4,6,8,10,12} and B={3,6,9,12,15} then A n B is
A. (A n B) = {2. 3. 4. 6. 8. 9. 10. 12}
B.(A n B) = {2,3,4,8,9,10}
C. (A n B) = {2,3,10,12}
D. (A n B) = {6,12}
Answer: Choice D) {6, 12}
============================================
Explanation:
The upside down U symbol means "set intersection". The intersection of two sets is the collection of all items that are in both sets at the same time.
In this case, only 6 and 12 are in both set A and set B at the same time, which is why choice D is the answer.
We can rule out choices A through C because 3 is not in set A (its only in set B).
Visually on a Venn Diagram, the intersection of the two sets will be shown as the overlapping region between the two circles A and B. So we'll have 6 and 12 in this overlapped region. The other values will go in their respective circles but not be in the overlapped region.
The intersection of sets A and B, denoted as A n B, includes only the elements that are present in both sets, which are 6 and 12. Therefore, A n B = {6,12}, which corresponds to option D of the provided choices.
The question asks for the intersection of sets A and B, which is denoted as A n B. Intersection means we look for elements that are common to both sets. In set A, we have {2,4,6,8,10,12}, and in set B, we have {3,6,9,12,15}. Therefore, the elements that are present in both sets are 6 and 12. Hence, A n B = {6,12}.
When comparing the answer choices provided, option D (A n B) = {6,12} is the correct answer because it lists exactly those numbers that are present in both set A and set B.
Which expression is equivalent to the given expression? (3m-4)^3(3m^5)
Answer: The answer is D
Answer:
Step-by-step explanation:
Hope this Helps ;)
if r=8 and s=3, find the value of rs+2s.
Answer: 30
Step-by-step explanation:
rs + 2s when r = 8 and s = 3
8(3) + 2(3)
8 * 3 = 24
2 * 3 = 6
24 + 6 = 30
Answer:
30
Step-by-step explanation:
You first plug in the value of s and r into the equation.
(8)(3)+2(3)
Then you solve it.
24+6
30
So, the answer is 30.
Your math teacher announces a 50 point quiz tomorrow. There will be a total of 15 questions. Some of the questions will be worth 4 points and some of the questions will be worth 3 points. Use a system to find out how many 4 points questions there will be
Answer:
3x + 4y = 50
x + y = 15
Five 4-point questions
Step-by-step explanation:
Change x + y = 15 to determine what y equal
y = (-x) + 15
Plug it in the original equation using the substitution method
3x + 4(-x + 15) = 50
3x - 4x + 60 = 50
Combine like terms:
-x = -10, two negative signs equals a positive. x = 10
Plug 10 in for x in the equation x + y = 15
10 + y = 15
Subtract 10 from both sides
y = 5
23128
Which expression is equivalent to 4V32xV2 ?
412
• 1682
HER
Answer:
16
Step-by-step explanation:
What is an equation of a line, in point-slope form, that passes through (1, −7) and has a slope of −23 ?
y+7=23(x+1)?
y−7=−23(x+1)?
y−7=23(x−1)?
y+7=−23(x−1)
IN SLOPE FORM
point slope form: y-y1=m(x-x1)
coordinate (1,-7):
point y1--7
point x1=1
slope (m)=-23
input into equation:
y-(-7)=-23(x-1)
convert to slope intercept form:
-*-=+ so 7 becomes +7
y+7
distribute -23 in -23(x-1) using the rule: a(b+c)=ab+ac
-23x+23
refine
y+7=-23x+23
perform some inverse operations:
y+7=-23x+23
y+7=-23x+23-7
y=-23x+16
therefore, D. y+7=−23(x−1) equals y=-23x+16 in slope-intercept form
Required equation of the line is y+7 = −23(x−1).
So, Option four is the correct answer.
What is slope?
In mathematics, the slope of a line is the change in the y-coordinate relative to the change in the x-coordinate.
The net change in the y-coordinate is denoted by Δy and the net change in the x-coordinate by Δx.
Thus, the change in the y-coordinate with respect to the change in the x-coordinate is obtained as follows:
m = change in y/change in x = Δy/Δx
Where "m" is the slope of the line.
You can also specify the slope of the line
tan θ = Δy/Δx
So, tan θ is the slope of the line.
In general, the slope of a line gives its steepness and direction. The slope of a line between two points (x1,y1) and (x2,y2) is easily determined by finding the difference in the coordinates of the points. The slope is usually denoted by the letter "m".
Here given,a line, in point-slope form, that passes through (1, −7) and has a slope of −23.
We want to find what is an equation of a line which passes through (1, −7) and has a slope of −23 ?
We know, if a line passes through the point (a,b) and has slope m then equation of the line,
[tex](y - b) = m(x - a)[/tex]
Here,
[tex]a = 1 \\ b = - 7 \\ m = - 23[/tex]
So, required equation is
[tex](y -( - 7)) = ( - 23)(x - 1) \\ (y + 7) = ( - 23)(x - 1)[/tex]
Therefore,required equation of the line is y+7 = −23(x−1).
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The denominator of a fraction is five more than twice the numerator. If both the numerator and denominator are decreased by seven, the simplified result is 1/3. Find the original fraction.
THe fraction is:
X
----------
2X + 5
Decreases the numerator and denominator by 1, the fraction becomes 3/8.
So now the fraction looks like this:
X-1 3
--------- = -----------
2x +5-1 8
Cross multiplies:
8(x-1) = 3 ( 2x +5 -1)
8x - 8 = 3( 2x + 4)
8x - 8 = 6x + 12 <--- distributive right side
8x - 8 - 6x - 12 = 0 <--- everybody moves left,changing signs, to keep leading coefficient of x term positive
2x - 20 = 0 <-- combines like terms
2x = 20 <--- solves for x
x=10
So the fraction 10/25.
(10-1)/(25-1) = 9/24 = 3/8
The original equivalent value of the fraction is A = 19/43
What is a Fraction?An element of a whole is a fraction. The number is represented mathematically as a quotient, where the numerator and denominator are split. Both are integers in a simple fraction. A fraction appears in the numerator or denominator of a complex fraction. The numerator of a proper fraction is less than the denominator.
Given data ,
Let's start by assigning variables to the numerator and denominator of the original fraction. Let x be the numerator and y be the denominator.
Then we can write:
y = 2x + 5 (since the denominator is five more than twice the numerator)
If both the numerator and denominator are decreased by 7, the new fraction can be written as (x-7)/(y-7), and we know that this is equal to 1/3:
(x-7)/(y-7) = 1/3
To solve for x and y, we can start by cross-multiplying to get:
3(x-7) = y-7
Next, we can substitute the expression for y that we derived earlier:
3(x-7) = 2x + 5 - 7
Simplifying this equation gives:
3x - 21 = 2x - 2
Bringing all the x terms to one side and all the constant terms to the other gives:
x = 19
Now that we know the value of x, we can substitute it back into our expression for y:
y = 2x + 5 = 43
Hence , the original fraction is x/y = 19/43
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5. How many more minutes are there in March than in April?
A) 720 B) 1440 C) 2160 D) 2880
Answer:b
Step-by-step explanation: because if you subtract 44,640 minus 43,200 which equal 1440
44,640-43,200=1,440
Answer: B) 1440
Step-by-step explanation:
March: 44,640 Minutes
April: 43,200 Minutes
Subtract 44,640-43,200=1440
21x+7y=42 and -5x+5y=10
Find the solution to the system of equations
Answer:
x=1y=3
Step-by-step explanation:
i just got it right
x=1 and y=3 are solutions of the system of equations
The given system of equations are
21x+7y=42 .....(1) and
-5x+5y=10....(2)
Multiply equation (1) with 5 and equation 2 with 7 to eliminate y
105x+35y=210..(3)
-35x+35y=70...(4)
Subtract equation 4 from 3
105x+35y+35x-35y=210-70
140x=140
Divide both sides by 140
x=1
Now plug in x value in equation 1
21+7y=42
7y=42-21
7y=21
Divide both sides by 7
y=3
Hence, the solutions of the system of equations are x=1 and y=3
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Pedro created a scatterplot and a trend line for data that he collected by comparing the number of minutes playing a game and the number of levels passed. Video Game Y=0.49x-0.88 Based on the information shown, which is the best prediction for the number of levels passed after playing for 20 minutes? 9 10 40 42
Answer:
9 on edge
Step-by-step explanation:
graph the equation y= -2x+3
Which of the following expressions represents the solution to -2x ≤ -10?
A)x ≤ -5
B)x ≥ -5
C)x ≥ 5
Final answer:
The solution to the inequality -2x ≤ -10 is found by dividing both sides by -2 and reversing the inequality sign, resulting in C) x ≥ 5.
Explanation:
The expression that represents the solution to -2x ≤ -10 is found by dividing both sides of the inequality by -2. When dividing by a negative number, we must reverse the inequality symbol. Thus, dividing both sides by -2 would give us x ≤ 5. However, since the inequality symbol was reversed, the correct solution is x ≥ 5.
Here are the steps broken down:
Starting with -2x ≤ -10.
Dividing both sides by -2 gives x ≥ 5.
Therefore, the correct answer is C) x ≥ 5.
The temperature in Greenland is -8.3°C. The temperature in Jamaica is 30°C. What is the difference between the temperatures in the two countries?
A.21.7°C
C.25°C
B.-21°C
D.38.3°C
Answer:
The difference between the temperatures in the two countries is 38.3°C.
Step-by-step explanation:
Given:
Temperature in Greenland = - 8.3°C
Temperature in Jamaica = 30°C
To find :
The difference between the temperature in the two countries = ?
[tex]\textrm{difference between the temperature in the two countries} =\textrm{temperature in Jamaica} - \textrm{temperature in Greenland}\\= 30 - (-8.3)\\= 30 +8.3\\= 38.3\°C[/tex]
Therefore,the difference between the temperatures in the two countries is 38.3°C
the cube root of 7201 is between which pair is integers? 84 and 85 , 36 and 37 , 24 and 25 , 19 and 20
Answer:
19 and 20
Step-by-step explanation:
19^3 = 6859
20^3 = 8000
7201 is between the two numbers.
Multiply or divide (-2)(+3)
Multiplication: (-2)(3) = -6
Division: (-2)/(3) = [tex]-\frac{2}{3}[/tex] or -0.67
Find the missing side of the right triangle
Answer:
1Step-by-step explanation:
Use the Pythagorean theorem:
[tex]leg^2+leg^2=hypotenuse^2[/tex]
We have
[tex]leg=3,\ leg=x,\ hypotenuse=\sqrt{10}[/tex]
Substitute:
[tex]3^2+x^2=(\sqrt{10})^2[/tex]
[tex]9+x^2=10[/tex] subtract 9 from both sides
[tex]9-9+x^2=10-9[/tex]
[tex]x^2=1\to x=\sqrt1\\\\x=1[/tex]
A store sells packages of comic books with a poster. A poster and 2 comics cost $7.99. A poster and 11 comics cost $16.99. Write a linear function rule that models the cost y of a package containing any number x of comic books.
Answer:
[tex]y=x+5.99[/tex]
Step-by-step explanation:
A poster and 2 comics cost $7.99
(2,7.99)
A poster and 11 comics cost $16.99.
(11,16.99)
Let y be the cost of package and x be the no. of comics
We will use two point slope form :
[tex](x_1,y_1)=(2,7.99)[/tex]
[tex](x_2,y_2)=(11,16.99)[/tex]
Formula : [tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]
Substitute the values:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]
[tex]y-7.99=\frac{16.99-7.99}{11-2}(x-2)[/tex]
[tex]y-7.99=1(x-2)[/tex]
[tex]y-7.99=x-2[/tex]
[tex]y=x-2+7.99[/tex]
[tex]y=x+5.99[/tex]
Hence a linear function rule that models the cost y of a package containing any number x of comic books is [tex]y=x+5.99[/tex]
The linear function that models the cost 'y' of a package containing 'x' number of comics is y = $5.99 + $1*x. This was determined by equating the differences in costs and numbers of comics to find the price per comic, and then solving one of the original equations for the price of the poster.
Explanation:To solve this problem, let's consider the cost difference between buying a package with 2 comics and a package with 11 comics. The difference between $16.99 and $7.99 is $9, and the difference between 11 comics and 2 comics is 9 comics. This gives us a cost of $1 per comic book. Let's denote the cost of a comic book as 'c' and the cost of the poster as 'p'. It can be represented by the equation c = $1. We can use one of the original equations to find the cost of the poster.
Let's use the first one 'p' + 2*c = $7.99. We substitute the cost of a comic book ('c' = $1) into that equation, resulting in a price for 'p' (the poster) of $5.99. So, the linear function which represents the cost 'y' of a package containing any number 'x' of comics is y = p + c*x, or y = $5.99 + $1*x, with 'y' being the total cost and 'x' being the number of comic books.
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Part A
Describe the type of function shown in the graph.
Part B
What are the standard form and the factored form of the function?
Answer:
A
[tex]F(x)=-\frac{1}{1500}(x+20)(x+5)(x-15)[/tex]
B
[tex]=> F(x)=-\frac{x^3}{1500}-\frac{x^2}{150}+\frac{11x}{60}+1[/tex]
Step-by-step explanation:
Function and its graphs
Part A
The graph shown in the image corresponds to a cubic function because of its classical infinite branches, three real roots and two extrema values
Part B
Knowing the value of the three roots x=-20, x=-5, and x=15 we can express the cubic function in factored form:
[tex]F(x)=C(x+20)(x+5)(x-15)[/tex]
The value of C will be determined by using any particular point from the graph. Let's use (0,1)
[tex]1=C(0+20)(0+5)(0-15)[/tex]
[tex]C=-\frac{1}{1500}[/tex]
Replacing, we find the factored form of the function
[tex]F(x)=-\frac{1}{1500}(x+20)(x+5)(x-15)[/tex]
The standard form demands to expand all the products and simplify
[tex]F(x)=-\frac{1}{1500}(x^3+10x^2-275x-1500)[/tex]
[tex]=> F(x)=-\frac{x^3}{1500}-\frac{x^2}{150}+\frac{11x}{60}+1[/tex]
Helpppoopo please please
Answer:
51.5 therms of natural gas
Step-by-step explanation:
19.57/0.38= 51.5
Answer: 51.5 therms
Step-by-step explanation:
$0.38 per therm
amount of money paid/rate=therms used
19.57/0.38=51.5
Generating Equations and Inequalities
Answer:
C = (5/9)(F-32)
Step-by-step explanation:
F = (9/5)C + 32 (subtract 32 from both sides)
F - 32 = (9/5)C (multiply both sides by 5/9 and rearrange))
C = (5/9)(F-32)
F = 9/5·C + 32
5F = 9C + 32·5
9C = 5F - 5·32
9C = 5(F - 32)
C = 5(F - 32)/9
how do i put this in slope-intercept form. passes through 2,-2 and 4,-1
Answer:
[tex]\large\boxed{y=\dfrac{1}{2}x-3}[/tex]
Step-by-step explanation:
The slope-intercept form of an equation of a line:
[tex]y=mx+b[/tex]
m - slope
b - y-intercept
The formula of a slope:
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
We have two points (2, -2) and (4, -1).
Substitute:
[tex]m=\dfrac{-1-(-2)}{4-2}=\dfrac{-1+2}{2}=\dfrac{1}{2}[/tex]
Put the value of a slope and the coordinates of the point (2, -2) to the equation of a line:
[tex]-2=\dfrac{1}{2}(2)+b[/tex]
[tex]-2=1+b[/tex] subtract 1 from both sides
[tex]-3=b\to b=-3[/tex]
Finally:
[tex]y=\dfrac{1}{2}x-3[/tex]
[(5.5+3)×7]+[(12÷3)×2]-4.5
Answer:
63
Step-by-step explanation:
[(5.5+3)*7]+[(12/3)*2]-4.5
[8.5*7]+[4*2]-4.5
59.5+8-4.5
67.5-4.5
63
y + 7 = - 2/5 * (x - 10) . What is theThe point-slope of the equation of the line that passes through (- 5, - 1) and (10, - 7) is standard form of the equation for this line? 2x - 5y = - 15 2x - 5y = - 17 2x + 5y = - 15 2x + 5y = - 17
Answer:
The Standard Form of the Equation is A. 2x - 5y = -15
Step-by-step explanation:
Given points: (-5, -1) and (10, -7).
Find the slope:
m = (y - y1)/(x - x1)
= -1 - (-7)/-5 - 10
= -1 + 7/-15
= 6/-15
m = -2/5
You already had the point slope form:
y - y1 = m(x - x1)
y - (-7) = -2/5(x - 10)
y + 7 = -2/5(x - 10)
The rest of the question is looking for the standard form of the equation:
Ax + By = C
Begin by solving the point slope form for y:
y + 7 = -2/5x + 20/5
y + 7 = -2/5x + 4
y = -2/5x - 3
Now, put the equation into the standard form:
y + 2/5x = -3
Multiply by 5, and place x first:
2x + 5y = -15, the Standard form of the Equation
Prove by setting x = 0 and finding the y intercept:
5y + 2(0) = -15
5y = -15
y = -3, giving the y intercept, when x = 0 as -3 or (0, -3)
Hope this helps!! Have an Awesome Day!! :-)
x+y-5z=24,y+z=1,z=-4
Answer:
x=39, y = 5 and z = -4.
Step-by-step explanation:
x + y - 5z = 24
y + z = 1
z = -4
Plug z = -4 into the second equation:
y + -4 = 1
y = 5.
Now plug x = -4 and y = 5 into the first equation:
x + 5 - 5*4 = 24
x = 24 - 5 + 20
x = 39.
some investments in the stock market have earned 10% annualy. At this rate, earnings can be found using the formula a = p (1.10)^n where A is the total value of the investment, P is the initail value of the investment, and N is the number of years the money is invested if $1,500 is invested in the stock market at this annual rate of return, what is the expected value after 18 years
Answer:
Calculate it
Step-by-step explanation:
1,500 = 1,500/10% x 1.1^18