Answer:
1h 20m
Step-by-step explanation:
Let the total amount of work be x.
Shannon:
2h = x
1h = [tex]\frac{1}{2}[/tex]x
So basically Shannon does [tex]\frac{1}{2}[/tex]x work per hour.
Sarah:
4h = x
1h = [tex]\frac{1}{4}[/tex]x
So basically Sarah does [tex]\frac{1}{4}[/tex]x work per hour.
Together:
1h = [tex]\frac{1}{2}[/tex]x + [tex]\frac{1}{4}[/tex]x
= [tex]\frac{2}{4}[/tex]x + [tex]\frac{1}{4}[/tex]x
= [tex]\frac{3}{4}[/tex]x
Amount of time spent = [tex]\frac{4}{4}[/tex]x ÷ [tex]\frac{3}{4}[/tex]x
= [tex]\frac{4}{4}[/tex]x × [tex]\frac{4}{3}[/tex]x
= [tex]\frac{16}{12}[/tex]h
= 1[tex]\frac{4}{12}[/tex]h
= 1h 20m
Answer:
4/3 hours
Step-by-step explanation:
For every hour that Sarah mows, Shannon mows twice as much. Because of this, Sarah is going to mow two times as much of the field as Shannon. You can set up an equation where x is the fraction of lawn mowed. This equation should be:
2x + x = 1 -> 3x = 1
The reason the equation is set up like this is because there is 1 whole lawn that the fraction of the lawn that Shannon mows (2x) plus the fraction of the lawn that Sarah mows (x) adds up to. You can use this equation to solve for x, which will be 1/3.
Since you know x, you can find what fraction of the lawn Shannon and Sarah mow. Since Shannon mows a fraction of 2x of the lawn, the fraction she mows will be 2*1/3 = 2/3. The fraction that Sarah mows will be x = 1/3.
Now that you know the fraction of the whole lawn that both Saran and Shannon mow, you can multiply their respective fraction by the amount of time it takes for them to mow a whole lawn. To do this for Shannon, you multiply 2/3 of the lawn by 2 hours, which gives you 4/3 hours. To do this for Sarah, you multiply 1/3 of the lawn by 4 hours, which also gives you 4/3 hours.
A strategy for 8,429 x 7
Answer: 59,003
Step-by-step explanation:
8,429 x 7=
8,429 x (5+2)=
8,429 x 5 + 8,429 x 2=
4,214.5*10+16,858= ==> n*5=n/2 * 10
42,145+16,858=59,003
A store had 4 packs of paper for 7.44.how much would it cost if you were to buy 5 packs
Answer: $9.30
Step-by-step explanation:
7.44/4 = 1.86
1.89 x 5 = $9.30
Anyone know this?????
Answer:
Final answer: P=(1,5)
Step-by-step explanation:
The line APB is a line such that AP/PB= 1/3. From the points A and B that we have we can find the distance between those points using the formula d= [(y2-y1)^2=(x2-x1)^2]^1/2
d= 4 (13)^(1/2)
Now the ratio is 1:3. AP= sq rt(13) and PB= 3 sq rt(13)
Using mid point formula the mid point of AB (say Q) = [(-1+7)/2,(2+14)/2]= (3,8).
Hence the mid point of AQ is P which can found out again using the mid point formula
P= [(-1+3)/2,(2+8)/2]= (1,5)
a highway has an optional toll lane that drivers may take to reduce the time they spend driving. drivers pay a small fee to enter the toll lane ($0.25) . then, once they leave the toll lane, they pay a fee based on the number of miles they have traveled on the toll lane. assume that the driver may leave the lane after any whole number of miles and pays for exactly that number, without rounding up. note that there is a linear relationship between the number of miles a vehicle has traveled and the price of the toll. a. if frank is on the toll road for 4.00 miles and then leaves the lane, how much will he have to pay total for the trip?
He have to pay $3.25.
Let the number of miles traveled by a driver be x
The toll paid by the driver is then represented as y. (in dollar)
Linear equation : an equation in which there is only one variable present. It is of the form Ax + B = 0, where A and B are any two real numbers and x is an unknown variable that has only one solution.
Since there is a linear relation between the two, we can assume the equation can be written as:
y = mx + c
From the given data, we get
0.24 = m(0) + c
c = 0.25
Using the second point:
1 = m(1) + 0.25
m = 1 − 0.25 = 0.75
Hence, the equation is y = 0.75x + 0.25.
If x = 4, then:
y = 0.75 × 4 + 0.25
y = 5.50
Hence, He have to pay $3.25.
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Given m//n, find the value of x
In
135*
M
x*
N
The value of x that makes the lines m and n to be parallel lines is 45 degrees
How to determine the value of x that makes the line parallel?The figure that completes the question is added as an attachment
From the figure, we have the following angles
Angle = x and 3x
The angles are interior of parallel lines
This means that they add up to 180 degrees
So, we have the following equation
Angle 1 + Angle 2 = 180 degrees
Substitute the known values in the above equation
So, we have
x + 3x = 180
Evaluate the like terms in the above equation
So, we have:
4x = 180
Divide both sides of the above equation by 4
So, we have
x = 45
Hence, the value of x that makes the lines m and n to be parallel lines is 45 degrees
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solve the following simultaneous equations
y=x^2
y= x+6
The solution of the simultaneous equations are x = 2, 3 and y = 3,9.
What are simultaneous equation?In mathematics; a set of simultaneous equations, also known as a system of equations or an equation system, it is a finite set of equations for which common solutions are sought.
WE have given simultaneous equations as;
y = x^2 ...(i)
y = x + 6 .....(ii)
Now Equating (i) and (ii) we get,
x^2 = x + 6
or, x^2 - x - 6 = 0
Then Solving we get;
x^2 - 3x - 2x - 6 = 0
x(x - 3) -2(x - 3) = 0
(x - 2)(x - 3) = 0
So, x = 2, 3
Now Putting x = 2, 3 in equation (i) we get;
y = 2^2
y = 4
and,
y = 3^2
y = 9
Thus, y = 3,9
Hence the solution of the simultaneous equations are x = 2, 3 and y = 3,9.
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if \mathbf{x}x is an optimal solution to a linear program pp, then \mathbf{x}x is a vertex of pp's feasible region.
Yes, it is true that if "x" is an optimal solution to a linear programming problem, then it is a vertex of the feasible region.
Linear programming (LP) is one of the most basic methods of optimization. By making a few simplifying assumptions, it can assist you in solving some highly complicated optimization issues.Linear programming is a basic approach that uses linear functions to represent complicated connections and then finds the optimum spots.Linear programming is used to find the best solution to a problem given certain limitations. In linear programming, we transform a real-world issue into a mathematical model. It consists of an objective function, linear inequalities, and constraints.A graphical technique entails constructing a collection of linear inequalities that are constrained. The disparities are then plotted on an X-Y plane. When we plot all of the inequalities on a graph, the intersecting region provides us with a viable region. The viable region describes all of the values that our model may take. It also provides us with the best solution.At the point of intersection, when the constraints are active, the best viable solution is found. This signifies that the intersection of the equations provides the best answer.
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(2x−6)(x−2) multiply
Step-by-step explanation:
Solving steps
(2x-6)×(x-2)
Multiply
2x×x-2x×2-6x-6x 2
Calculate Multiply
2x²-4x-6x+12
Collect like terms
Solution
2x²- 10x + 12
what is the simplest form of 2/4 divide by 4/9
Answer:
it 9/ 8
Step-by-step explanation:
2/4× 9/4
18/16
9/8
2x+14= use distributive property of addition to complete the statement
Answer:
I think it's 2(x+7).
Step-by-step explanation:
This is distributive function where a number is multiplied from outer value to inner parenthesis values.
I hope this is the right answer.
Quadrilateral ABCD undergoes a reflection across the x-axis to form quadrilateral A'B'C'D'. The coordinates of A' are (
,
).
The reflected quadrilateral A'B'C'D' is then translated 3 units right and 2 units up to form quadrilateral A"B"C"D". The coordinates of A" are (
,
).
The coordinates of A'' will be ( -2, 5).
We are given that:
Quadrilateral ABCD is reflected across the x - axis.
We know that, when a refection is done about x-axis, the values of the abscissa x remain identical & the value of ordinate just change their signs:
A(-5,-3) will become A'(-5,+3)
B(-6,-1) will become B'(-6,+1)
C(-3,-1) will become C'(-3,+1)
D(-2,-3) will become D'(-2,+3)
Now, the reflected quadrilateral A'B'C'D' is then translated 3 units right and 2 units up to form quadrilateral A"B"C"D".
So, the coordinates of A'' will become:
( - 5 + 3, 3 + 2)
( -2, 5)
Therefore, we get that, the coordinates of A'' will be ( -2, 5).
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Help pls points added
Answer:
A: (-10, 2)
B: (-5, 2)
C: (-5, 7)
D: (-10, 7)
Step-by-step explanation:
When you reflect over the x axis, you flip the y value, so that what I did.
Solve the system of equations : 5x - 2y = -1 and -15x + 6y = 3
Equation are defined by equating two or more expressions. The solution to the system of equation is (k, (1+5k)/2)
Solving system of equationSystem of equations are equations are equations that contains several variables and expression.
Given the system of equations
5x - 2y = -1
-15x + 6y = 3
Divide equation 2 through by -3 to have:
-15x/-3 + 6y/-3 = 3/-3
5x - 2y = -1
You can see that both equations are equal. Let x = k so that;
5k - 2y = -1
-2y = -1 - 5k
2y = 1 + 5k
y = (1+5k)/2
Hence the solution to the system of equation is (k, (1+5k)/2)
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A box contains 20 balls: 10 are yellow, 6 are red, and 4 are grey. What is the probability of picking a yellow and then a red ball? (the first ball will be replaced)
probability of picking a yellow ball: 10/20 (1/2)
probability of picking a red ball: 6/20 (3/10)
1/2 times 3/10 =
3/20
The coordinate -2 has a weight of 3, the coordinate 5 has a weight of 1, and the coordinate 6 has a weight of 1. Find the weighted average.
The weight average of the coordinates is 1
How to determine the weight average?The given parameters are:
Coordinate -2 has a weight of 3Coordinate 5 has a weight of 1Coordinate 6 has a weight of 1The weight average is then calculated as:
Weight average = Sum of (Weight * Coordinate)/Sum of Weights
So, we have:
Weight average = (-2 * 3 + 5 * 1 + 6 * 1)/(3 + 1 + 1)
Evaluate the quotient
Weight average = 1
Hence, the weight average of the coordinates is 1
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Find the exponential form of the complex number \[ e^{17\pi i/60} e^{27\pi i/60} e^{37\pi i /60} e^{47 \pi i /60} e^{57 \pi i/60}\]with proof
the exponential form of the complex number \[ e^{17\pi i/60} e^{27\pi i/60} e^{37\pi i /60} e^{47 \pi i /60} e^{57 \pi i/60}\]
= (2+[tex]\sqrt{3}[/tex]) [tex]e^3^7^\pi^ i^/^6^0.[/tex]
How is the exponential form calculated?[tex]e^1^7^\pi ^i/^6^0[/tex] + [tex]e^2^7^\pi^ i^/^6^0[/tex]+⋯+[tex]e^5^7^\pi ^i^/^6^0[/tex]
=[tex]e^1^7^\pi ^i^/^6^0[/tex](1+[tex]e^\pi^ i^/^6[/tex]+....+[tex]e^4^\pi ^i^/^6[/tex])
=[tex]e^1^7^\pi ^i^/^6^0[/tex] (1−[tex]e^5^\pi ^i^/^6[/tex]) ÷ (1−[tex]e^\pi ^i^/^6[/tex])
=[tex]e^1^7^\pi ^i/^6^0[/tex] ([tex]\frac{1}{2}[/tex](2+[tex]\sqrt{3}[/tex]) + [tex]\frac{1}{2}[/tex](3+2[tex]\sqrt{3}[/tex])i)
=(2+[tex]\sqrt{3}[/tex])e17πi/60(12+([tex]\sqrt{3}[/tex]/ [tex]2[/tex]) i )
=(2+[tex]\sqrt{3}[/tex])[tex]e^1^7^\pi ^i^/^6^0[/tex] [tex]e^\pi ^i^/^3[/tex]
=(2+[tex]\sqrt{3}[/tex]) [tex]e^3^7^\pi^ i^/^6^0.[/tex]
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2 Shape 1 and Shape 2 are congruent pentagons.
Shape 1
Shape 2
Shape 2 is congruent to Shape 1 because -
Shape 2 is a translation of Shape 1.
Shape 2 is a reflection of Shape 1.
Shape 2 is a rotation of Shape 1.
D. Shape 2 and Shape 1 are both pentagons.
A.
B
C.
The shape 1 and shape 2 are congruent pentagons becuase shape 2 is a reflection of shape 1.
Given that shape 1 and shape 2 are congruent pentagons.
We are required to choose the option which is correct according to the given statemment that shape 1 and shape 2 are congruent pentagons.
Pentagons are the shape which have 5 sides and 5 angles.
Two shapes are congruent if they are copy of each other means all the corresponding sides are equal to each other.
The shape 1 and shape 2 are congruent pentagons becuase shape 2 is a reflection of shape 1.
Hence the shape 1 and shape 2 are congruent pentagons becuase shape 2 is a reflection of shape 1.
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you will get 30 points if you solve this
Answer:
41
Step-by-step explanation:
5y+x
Evaluate the expression
Let x=6 and y=7
5*7 +6
Multiply first
35 +6
Then add
41
Answer:
it 41
Step-by-step explanation:5(7)+6=41
Suppose a meal consists of one sandwich, one side order and one beverage. What is the most
expensive meal you can purchase? How much does it cost?
Hamburger $3.25
Bacon Cheeseburger $4.75
Chicken Fajita Taco $3.50
French Fries, Small $1.55
French Fries, Large $1.90
Onion Rings $2.40
Cole Slaw $1.45
Soft Drink, Small $1.30
Soft Drink, Large $1.65
Milkshake $3.25
Juice $1.80
$26.8 is the total cost and Chicken Fajita Taco is the most
expensive meal .
What in mathematics is a linear equation?
There are only one or two variables in a linear equation. No variable can be multiplied by a number larger than one or used as the denominator of a fraction in a linear equation. All of the points fall on the same line when you identify the values that together make a linear equation true and plot those values on a coordinate grid.Hamburger + Bacon Cheeseburger + Chicken Fajita Taco + French Fries, Small + French Fries, Large + Onion Rings + Cole Slaw + Soft Drink, Small + Soft Drink, Large + Milkshake + Juice
= $3.25 + $4.75 + $3.50 + $1.55 + $1.90 + $2.40 + $1.45 + $1.30 + $1.65 + $3.25 + $1.80
= $26.8
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Jane and jill want their mom to ride the roller coaster with them, but she thinks it will be too fast. she asks the girls to find out how fast the roller coaster will be traveling. they find out that the speed of the roller coaster, in miles per hour, is modeled by the function g(x) = x4 − 4x2 7x − 8, where x is time measured in seconds. how fast is the roller coaster traveling at 2 seconds? 6 miles per hour 22 miles per hour 26 miles per hour 54 miles per hour
Answer:
6 miles per hour!
Step-by-step explanation:
translate the following verbal statement into an algebraic equation and then solve: use x for your variable. the quotient of two more than a number and five is eight.
The algebraic equation of the verbal statement is (x + 2) / 5 = 8 and the value of x is 38.
Algebraic Equation
An algebraic equation means the statement of the equality of two expressions formulated by applying to a set of variables the algebraic operations, namely, addition, subtraction, multiplication, division, raising to a power, and extraction of a root.
Given,
The quotient of two more than a number and five is eight.
Here we need to translate the given verbal statement into an algebraic expression and solve it.
The quotient of two more than a number and five is eight.
Let, the number be x.
According to the question, the equation is
=> (x + 2) / 5 =8
=> x + 2 = 8 x 5
=> x + 2 = 40
=> x = 40 - 2
=> x = 38
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Property to find the sum or product identify the property you used 6 x 43
The multiplication of 6 × 43 by applying the distributive property of multiplication will be 258.
What is multiplication?The general mathematical operation of multiplying two or more numbers to get a new multiplied number.
If both values are more than or less than one, the resultant multiplication will be greater or smaller than the numbers that will be multiplied.
For reference 4 × 3 = 12 and 4 × 0.5 = 2.
Given the multiplication,
6 × 43
⇒ 6 × (40 + 3)
By applying the distributive property of multiplication,
⇒ 6 × 40 + 6 × 3
⇒ 240 + 18
⇒ 258
Hence "The multiplication of 6 × 43 by applying the distributive property of multiplication will be 258.".
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a location that is 30 degrees north and 45 degrees west is what of the prime meridian and what of the equator
A location that is 30 degrees north and 45 degrees west is west of the prime meridian and north of the equator.
A prime meridian refers to an arbitrary meridian which is there in a geographic coordinate system. Here, the longitude is defined as 0°.
A prime meridian and its anti-meridian will together form a great circle in a geographic coordinate system.
The Equator is a circle of latitude, about 40,075 km in circumference, that divides Earth into the Northern and Southern hemispheres.
It is an imaginary line that is located at 0 degrees latitude, and is a halfway between the North and South poles.
Therefore, we get that a location that is 30 degrees north and 45 degrees west is west of the prime meridian and north of the equator.
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what’s 17x3-11y2-14y3
Answer:
3x^3-11y^2
Step-by-step explanation:
17x^3 -11y^2 -14x^3
collect like terms
17x^3 -14x^3 =3x^3
3x^3-11y^2
I hope it helps.
What is the valur of expression 6 3/4 (-11.5) ?
77 5/8
69 3/4
- 77 5/8
- 69 3/4
I need help
Step-by-step explanation:
so, this is a multiplication ?
6 3/4 × (-11.5)
let's bring the mixed numbers to full fractions, and then we can easily multiply.
6 3/4 = (6×4 + 3)/4 = (24 + 3)/4 = 27/4
-11.5 = -11 1/2 = (-11×2 - 1)/2 = (-22 - 1)/2 = -23/2
so, the multiplication is
27/4 × -23/2 = 27×-23 / 4×2 = -621/8 =
= (-616 - 5)/8 = (-77×8 - 5)/8 = -77 5/8
Answer:
-77 5/8
Step-by-step explanation:
6 3/4 can be turned into 6.75.
6.75 * -11.5 is -77.625
-77.625 can be simplified into 5/8
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A 9-foot piece of ribbon costs $20.07. What is the price per yard?
The price per yard of the ribbon is $6.69
Conversion of foot to yardFirst, we will need to convert 9 foot to yards as shown;
9 foot = 3 yards
This shows that a 3 yard piece of ribbon costs $20.07, the price per yard is expressed as;
Price per yard = 20.07/Total yard
Price per yard = 20.07/3
Price per yard = 6.69
Hence the price per yard of the ribbon is $6.69
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3) At midnight, the temperature was 15 degrees
Fahrenheit. When we woke up in the morning, the
temperature was -3 degrees. What was the change in
temperature from midnight to the morning?
Answer:
Step-by-step explanation:
First of all it has to drop 15 degrees to get to 0.
We have another three degrees to go.
15 - - 3 = 18
The temperature change was 18 degrees from midnight to morning.
Help would be EXTREMELY appreciated I really need this tomorrow
The value of csc x=-13/5.
Given that the sin x=-5/13 and x∈[3π/2 , 2π).
A trigonometric function is a real function that relates the angle of a right triangle to the ratio of the lengths of the two sides. The basic functions are sin, cos, tan, cot, sec, csc.
The given function is sin x=-5/13.
As we all know that sin x=1/csc x or csc x=1/sin x.
As it is given that x∈[3π/2 , 2π) that means x lies in fourth quadrant and in fourth quadrant sin and csc is negative in it.
So, we will apply this identity csc x=1/sin x, we get
csc x=1/(-5/13)
csc x=-13/5
And it also lies in x∈[3π/2 , 2π).
Hence, the value of csc x when sin x=-5/13 and x∈[3π/2 , 2π) is csc x=-13/5.
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91-[22{16 divided (39 + 3 of 3-40)}]
The value of the expression 91 - [ 22 { 16 divided (39 + 3 of 3 - 40 )} ] is 47 by using PEMDAS.
We are given an expression as:
91 - [ 22 { 16 divided (39 + 3 of 3 - 40 )} ]
By the PEMDAS rule, the expression will be:
= 91 - [ 22 {16 ÷ (39 + 9 - 40 ]
= 91 - [ 22 {16 ÷ (8) ]
= 91 - [ 22 {16 ÷ 8} ]
91 - [ 22 {2} ]
= 91 -[ 22 × 2 ]
= 91 - [ 44 ]
= 91 - 44
= 47
Therefore, the value of the expression 91 - [ 22 { 16 divided (39 + 3 of 3 - 40 )} ] is 47 by using PEMDAS.
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I thought of a number, added 21, and then added twice my
original number and got 84. What is my number?
Answer:
31.5
Because if you Subtract 21 from 84 you get 63
then if you divide 63 by 2 you get 31.5 so your Answer would be 31.5.