A $649 laptop computer cost $519.20 after a coupon is applied. What percentage off is the coupon

The speed of the river's current is 3 miles per hour.

To determine the speed of the river's current, we can use the formula d = rt, where d is the distance, r is the rate, and t is the time.

We can set up two equations, one for upstream and one for downstream, and solve for the speed of the river's current.

For upstream:

9 = (6 - c)t

For downstream: 27 = (6 + c)t

Since it takes her the same amount of time to paddle 9 miles upstream as it does to travel 27 miles downstream, we can set the two equations equal to each other:

9 = (6 - c)t = 27 = (6 + c)t

Simplifying and solving for c:

9(6 + c) = 27(6 - c) 54 + 9c = 162 - 27c 36c = 108 c = 3

Therefore, the speed of the river's current is 3 miles per hour.

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The solver for this expression is x = -5/2, 5/2, 2, -1/3, 1, 2.

To solve this expression, we will first need to factor the numerator and denominator of each fraction.

For the first fraction, we can factor the numerator as follows:
[tex]25 - 4x^2 = (5 + 2x)(5 - 2x)[/tex]

The denominator can be factored as follows:
[tex]6x^2 + 9x - 15 = (2x + 5)(3x - 3)[/tex]

For the second fraction, the numerator can be factored as follows:
[tex]6x^2 - 2x - 4 = (2x - 4)(3x + 1)[/tex]

The denominator can be factored as follows:
[tex]2x^2 - x - 10 = (2x + 5)(x - 2)[/tex]

Now we can simplify the expression by canceling out any common factors:
[tex](5 + 2x)(5 - 2x)/(2x + 5)(3x - 3) * (2x - 4)(3x + 1)/(2x + 5)(x - 2)[/tex]
[tex]= (5 + 2x)(5 - 2x)(2x - 4)(3x + 1)/(2x + 5)(3x - 3)(2x + 5)(x - 2)[/tex]

[tex]= (5 + 2x)(5 - 2x)(2x - 4)(3x + 1)/(3x - 3)(x - 2)[/tex]

Since the expression is equal to 0, we can set each factor equal to 0 and solve for [tex]x[/tex]:

[tex]5 + 2x = 0 \\5 - 2x = 0 \\2x - 4 = 0 \\3x + 1 = 0 \\3x - 3 = 0 \\x - 2 = 0 \\[/tex]

Solving for x, we get the following solutions:
[tex]x = -5/2 \\x = 5/2 \\x = 2 \\x = -1/3\\ x = 1 \\x = 2 \\[/tex]

Therefore, the solver for this expression is [tex]x = -5/2, 5/2, 2, -1/3, 1, 2[/tex].

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The box of largest volume the company can build for $96 is the box that costs exactly $96.

The company can build a box of the largest volume for $96 by calculating the area of the bottom and sides of the box. To calculate the area of the bottom, use the formula A=l x w, where l is the length of one side and w is the width of one side. Since the bottom is square, l=w. Thus, A=l^2. The area of the bottom is then multiplied by the cost of the material for the bottom, which is $2 per cm2, to calculate the total cost of the bottom.

Similarly, to calculate the cost of the sides, use the formula A=2lh + 2wh, where h is the height of the box. The area of the sides is then multiplied by the cost of the material for the sides, which is $1 per cm2, to calculate the total cost of the sides.

The total cost of the box is the cost of the bottom plus the cost of the sides. Since the company has budgeted $96 to build one box, the total cost of the box must not exceed $96. Therefore, the box of largest volume the company can build for $96 is the box that costs exactly $96.

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Answer:

I think 2nd option..........

The responses which represents the area of the rectangle are 23 ⅝ and 198/8

The correct answer choice is option A and B

Area of a rectangle = Length × Width

Length = 5 ¼ metros

Width = 4 ½ metros

Area of a rectangle = Length × Width

= 5 ¼ metros × 4 ½ metros

= 21/4 × 9/2

= (21 × 9) / (4 × 2)

= 189 / 8 square metros

= 23 5/8 square metros

Hence, the area of the rectangle is given by 189 / 8 square metros or 23 5/8 square metros.

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Therefore , the solution of the given problem of equation comes out to be julian must  sell at least 28 wallets in order to make even.

Mathematical formulas frequently use the same variable letter to try to impose unity between two assertions. Many academic numbers are shown to be equal using mathematical fraction equations, also known as assertions. Using y + 6 as an illustration, the normalise does not divide 12 into two parts, but instead b + 6. It is possible to determine the connection between each sign part and the number of lines. The significance of a symbol usually contradicts itself.

Here,

For Julian to break even, his revenue must match his expenses. Therefore, we can equalise the two equations and find x:

=> 18x - 140 = 7x + 160

7x is subtracted from both lines to yield:

=> 11x - 140 = 160

140 added to both ends results in:

=> 11x = 300

When we multiply both parts by 11, we get:

=> x = 27.27 (rounded to two integer places) (rounded to two decimal places)

We can round up to the nearest whole amount because Julian cannot sell a fraction of a wallet. Julian must therefore sell at least 28 wallets in order to make even.

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The perimeter is the tοtal length οf a shape's bοundary, and the rule fοr finding the οuter perimeter οf Jian's equilateral triangle designs is p = n + 1.

The perimeter οf a twο-dimensiοnal shape is the tοtal length οf its bοundary, which is the sum οf the lengths οf all its sides. It is typically measured in units such as centimeters, inches, οr meters.

Fοr example, the perimeter οf a square with side length s is 4s, since it has fοur sides οf equal length. The perimeter οf a rectangle with length l and width w is 2l + 2w, since it has twο pairs οf sides οf different lengths.

Nοw, let's cοnsider the relatiοnship between the number οf triangles and the οuter perimeter οf Jian's design. Frοm the table, we can see that the οuter perimeter increases by 1 as the number οf triangles increases by 1. Specifically, the οuter perimeter is always 1 mοre than the number οf triangles used in the design.

Therefοre, we can write the rule fοr finding the οuter perimeter p in terms οf the number οf triangles n as:

p = n + 1

This rule tells us that if we knοw the number οf triangles used in a design, we can find the οuter perimeter by adding 1 tο that number.

Hence, The perimeter is the tοtal length οf a shape's bοundary, and the rule fοr finding the οuter perimeter οf Jian's equilateral triangle designs is p = n + 1.

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The error made by the student is instead of taking +4 as common he has taken - 4 as common.

To factor an expression by grouping, we need to look for groups of terms that have common factors. Then, we factor out those common factors from each group and see if there is a common factor that can be further factored out.

Here we have

6x² ​ – x​ – 12  

The above expression can be factorized as follows

=> 6x² – x – 12

= 6x² – 9x + 8x – 12        [ Splitting the middle term ]

= 3x(2x – 3) + 4(2x – 3)     [ Grouping the terms ]  

= (3x + 4)(2x – 3)  

Hence, the factors of given expression are (3x + 4) and (2x – 3)  

The error made by the student is in step 3 instead of taking +4 as common he has taken - 4 as common which doesn't give the common factors in the next step taken.    

Therefore,

The error made by the student is instead of taking +4 as common he has taken - 4 as common.

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To make the solid figure true using column A and column B are as follow,

1.ice cube → cube

2.tissue roll → cylinder

3.match box →rectangular prism

4.volleyball →sphere

5.can of sardines →cylinder

6.milk box → rectangular prism

7.volcano →cone

8.toblerone →triangular prism

9.bus→rectangular prism

10.roof of a nipa hut→ triangular pyramid

Solid figure represents the following shape,

1. Ice cube represents the cube shape as all the sides are of same length.

2. Tissue roll represents the cylindrical shape.

3. Match box is an perfect example for rectangular prism.

4. Volleyball represents the spherical shape.

5. Can of sardines is one of the perfect example of cylinder.

6. Milk box is also one of the example of rectangular prism

7.volcano represents the cone.

8.toblerone is representing triangular prism.

9.bus is a example of rectangular prism

10.roof of a nipa hut it is an example of triangular pyramid

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The above question is incomplete, the complete question is:

Choose the solid figure in Column B to make each statement is true of column A.

Column A.

1.ice cube

2.tissue roll

3.match box

4.volleyball

5.can of sardines

6.milk box

7.volcano

8.toblerone

9.bus

10.roof of a nipa hut

Column B.

A. cone

B. cube

C. cylinder

D. rectangular prism

E. sphere

F. square pyramid

G. triangular prism

H. triangular pyramid​

(a) The permutations can be written as a product of disjoint cycles as follows:
α = (1 5 4 3 2)(6 7 8)
β = (1)(2 3 8 4 7)(5 6)
γ = (1 2 3 5)(4 5 6 8)

(b) The order of each permutation is the least common multiple of the lengths of the disjoint cycles. Therefore:
Order of α = lcm(5, 3) = 15
Order of β = lcm(1, 5, 2) = 10
Order of γ = lcm(4, 4) = 4

(c) The permutations can be written as a product of 2-cycles as follows:
α = (1 2)(2 3)(3 4)(4 5)(5 1)(6 7)(7 8)(8 6)
β = (1 1)(2 3)(3 8)(8 4)(4 7)(7 1)(5 6)(6 5)
γ = (1 2)(2 3)(3 5)(5 1)(4 5)(5 6)(6 8)(8 4)
Since α and β have an even number of 2-cycles, they are even permutations. γ has an odd number of 2-cycles, so it is an odd permutation.

(d) The inverse of each permutation can be found by reversing the order of the elements in each cycle. The inverses can be written as a product of disjoint cycles as follows:
[tex]α^-1 = (1 2 3 4 5)(6 8 7)β^-1 = (1)(2 7 4 8 3)(5 6)γ^-1 = (1 5 3 2)(4 8 6 5)[/tex]

(e) The products αβ and βα can be found by performing the permutations in the given order. The products can be written as a product of disjoint cycles as follows:
αβ = (1 6 8 4 7 2 3 5)(5 1)
βα = (1 7 4 8 6 5 3 2)(2 1)
The order of αβ is lcm(8, 2) = 8, and the order of βα is lcm(8, 2) = 8.

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Answer:

Area = 15.6

Perimeter = 20.6

Step-by-step explanation:

Both smaller triangles are right triangles

The left triangle is isosceles right triangle since 2 angles are 45o so AB is hypotenuse and the other 2 sides are equal

so c^2 = a^2 + b^2

c^2 = 2a^2

(3√2)^2 = 2a^2

2a^2 = 18

a^2 = 9

a = 3

For the right triangle the angle at B is 60o, hypotenuse is BC

so cos(60) = adjacent/hypotenuse

1/2 = 3/BC

=> BC = 6

sin(60) = opposite/hypotenuse

√3/2 = opp/6

opp = 3√3

so AC = 3 + 3√3 = 6√3

Area of triangle = A = 1/2bh = 1/2(6√3)(3) = 9√3 = 15.6

Perimeter = 3√2 + 6√3 + 6 = 20.6

The points F(8,-1), G(2,1), H(1, -2), and I(7,-4) form a quadrilateral. The desired slopes and lengths are follows:

The type of quadrilateral that BEST identifies the given points is a parallelogram.

To find the slopes and lengths of the quadrilateral, we will use the slope formula and the distance formula.

Slope formula: m = (y2 - y1)/(x2 - x1)
Distance formula: d = √((x2 - x1)² + (y2 - y1)²)

Slopes:
FG: m = (1 - (-1))/(2 - 8) = -1/3
GH: m = (-2 - 1)/(1 - 2) = 3
HI: m = (-4 - (-2))/(7 - 1) = -1/3
IF: m = (-1 - (-4))/(8 - 7) = 3

Lengths:
FG: d = √((2 - 8)² + (1 - (-1))²) = √(40) = 2√(10)
GH: d = √((1 - 2)²+ (-2 - 1)²) = √(10)
HI: d = √((7 - 1)^2 + (-4 - (-2))²) = √(40) = 2√(10)
IF: d = √((8 - 7)² + (-1 - (-4))^2) = √(10)

From the above calculations, we can see that the slopes of FG and HI are equal, and the slopes of GH and IF are equal. This means that the opposite sides of the quadrilateral are parallel. Additionally, the lengths of FG and HI are equal, and the lengths of GH and IF are equal. This means that the opposite sides of the quadrilateral are also congruent.

Therefore, the type of quadrilateral that BEST identifies the given points is a parallelogram.

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The value of x is (12 ± √141) / 3. The solution has been obtained by solving the algebraic equation.

A mathematical expression is said to be "algebraic" if it includes variables, constants, and algebraic operations (addition, subtraction, etc.). The equals sign is a requirement for the expression to satisfy the algebraic equation.

We are given an equation as 3x (x - 6) - 8x = -(2x + 1)

On solving the given equation, we get

⇒3x (x - 6) - 8x = -(2x + 1)

⇒3x² - 18x - 8x = -2x - 1

⇒3x² - 26x = -2x - 1

⇒3x² - 24x = - 1

⇒3x² - 24x + 1 = 0

Using quadratic formula, we get

x = (12 ± √141) / 3

Hence, the value of x is (12 ± √141) / 3.

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Answer:

20 feet

Step-by-step explanation:

You can use trigonometry to solve this problem. The height of the kite can be found using the sine function. The sine of an angle in a right triangle is equal to the length of the side opposite the angle divided by the length of the hypotenuse.

In this case, the side opposite the 30° angle is the height of the kite (h), and the hypotenuse is the length of the string (40 feet). So we have:

sin(30°) = h / 40

Solving for h, we get:

h = 40 * sin(30°)

Since sin(30°) = 0.5, we have:

h = 40 * 0.5

So, h = 20 feet.

The kite is 20 feet high in the air.

Answer:

To solve this problem, we can use trigonometry. Let's assume that the height of the kite from the ground is h. Then, we can use the tangent function to find the value of h.

We know that the tangent of an angle is equal to the opposite side over the adjacent side. In this case, the opposite side is the height of the kite (h) and the adjacent side is the distance from you to the point directly below the kite on the ground, which is 40 feet.

So we have:

tan(30°) = h/40

Multiplying both sides by 40, we get:

h = 40 tan(30°)

Using a calculator, we can find the value of tangent of 30 degrees, which is approximately 0.5774. So:

h = 40 × 0.5774 ≈ 23.1

Therefore, the height of the kite in the air is approximately 23.1 feet.

Answer:

97271.1577

Step-by-step explanation:

multiply 3374.60 by 2882.45%

The like terms are √2, − 3√2 and 5√2. The radicals are 2√3 and 2√5, √32.

The radical and root of a number are the same thing. The root can be an nth root, a square root, or a cube root. Hence, a radical is any number or phrase that employs a root. The Latin word Radix, which meaning root, is where the word "radical" originates. The radical can be used to explain various types of roots for a number, including square, cube, fourth, and so on. The index number or degree is the number that appears before the radical.

Similar terms are ones whose exponent power and variables are the same. These variables' coefficients might differ. Terms with algebraic similarities are those that are comparable to one another.

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Louise has 2 1/4 feet more of green yarn than white yarn.

What is the fractions ?

A fraction is a way to represent a part of a whole or a ratio between two quantities.

To compare the amounts of green and white yarn, we need to express the amounts in the same units. Let's convert 2/4 yards of white yarn to feet, since the green yarn is already measured in feet.

1 yard = 3 feet

2/4 yard = 2/4 * 3 feet/yard = 1.5 feet

Now we can compare the amounts of green and white yarn in feet:

Amount of green yarn = 3 3/4 feet

Amount of white yarn = 1.5 feet

To find how many more feet of green yarn Louise has than white yarn, we can subtract the amount of white yarn from the amount of green yarn:

3 3/4 feet - 1.5 feet = 2 1/4 feet

Hence, Louise has 2 1/4 feet more of green yarn than white yarn.

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The population two years ago was 28,080.

To calculate this, we need to use the following formula: Population two years ago = Population now - (Population increase rate x Number of years). Therefore, the population two years ago was 31,200 - (10% x 2) = 28,080.

We can also look at this another way. To calculate the 10% increase per year, we can use the following formula: Population increase rate = (Population now - Population two years ago) / Number of years. Therefore, 10% = (31,200 - 28,080) / 2 = 3,120.

We can use this same formula to calculate the population three years ago. Using the same formula, the population three years ago was 25,960.

To summarize, the population two years ago was 28,080 and the population three years ago was 25,960. The population has been increasing by 10% each year.

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The value of x from the proportion is x = 1.6

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

The proportional equation is given as y ∝ x

And , y = kx where k is the proportionality constant

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Given data ,

Let the proportion equation be represented as A

Now , the value of A is

( x / 4 ) = ( 2 / 5 )

On simplifying , we get

Multiply by 4 on both sides , we get

x = ( 2 * 4 ) / 5

x = 8/5

On further simplification , we get

x = 1.6

Therefore , the value of x is 1.6

Hence , the proportion is x = 1.6

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[tex]5 < - 8[/tex]

__________

One possible value of m is 53.

A possible value of m can be found using the Chinese Remainder Theorem. The Chinese Remainder Theorem states that if two numbers a and b are relatively prime, then there exists an integer x such that:
x ≡ a (mod m)
x ≡ b (mod n)

In this case, we have:
m ≡ 3 (mod 5)
m ≡ 1 (mod 7)

Both 5 and 7 are prime so we can start by finding the smallest positive integer that is congruent to 3 (mod 5) and 1 (mod 7). This integer is 18:

18 ≡ 3 (mod 5)
18 ≡ 1 (mod 7)

Now, we can add multiples of 5*7 = 35 to 18 until we find a value of m that is greater than 40 but less than 80:

18 + 35 = 53

53 is greater than 40 but less than 80, so one possible value of m is 53.

Therefore, one possible value of m is 53.

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The determinant of matrix A is -6.

A. To evaluate det(A) by a cofactor expansion along a row or column of your choice, we can choose any row or column and multiply each element by its corresponding minor and sign.

For example, let's choose the first row:

det(A) = (-6)(4*3-0*1) + (0)(2*3-(-1)*2) + (2)(2*0-(-1)*4)

det(A) = (-6)(12) + (0)(6) + (2)(4)

det(A) = (-72) + (0) + (8)

det(A) = -64

Therefore, the determinant of matrix A is -64.

B. Alternatively, we could have chosen any other row or column and the result would have been the same. For example, if we chose the third column:

det(A) = (2)(4*0-2*0) + (-1)(-6*3-2*0) + (3)(-6*0-2*4)

det(A) = (2)(0) + (-1)(-18) + (3)(-8)

det(A) = (0) + (18) + (-24)

det(A) = -6

Therefore, the determinant of matrix A is -6.

Note that the determinant of a matrix is a scalar value, and it is the same regardless of which row or column we choose to expand along.

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Answer:

To determine which two statements are correct for this situation, we need to analyze the given information.

The water faucet leaks 35 of a liter of water in 34 of an hour, which means that:

In one hour (60 minutes), the faucet will leak:

60/34 x 35 = 61.76 milliliters (ml) of water.

In one minute, the faucet will leak:

35/34 = 1.0294 ml of water.

In one day (24 hours), the faucet will leak:

24 x 61.76 = 1482.24 ml or 1.48224 liters of water.

In one week (7 days), the faucet will leak:

7 x 1.48224 = 10.37568 liters of water.

Based on this information, the correct statements are:

The faucet leaks approximately 61.76 milliliters of water in one hour.

The faucet leaks approximately 10.37568 liters of water in one week.

Answer:

y=3/2x-7

Step-by-step explanation:

Answer:8/3

Step-by-step explanation:

Total number of hours: 24

Total number of guards: 9

Equation: Total number of hours/ total number of guards

24/9= 8/3 hour shifts or 2.66667 hour shifts for each guard.

The number of fruits that Kim bought in all, given the apples and oranges was ;

Let's call the number of oranges that Kim bought "O" and the number of apples that Kim bought "A".

From the problem, we know that Kim bought fewer than 20 pieces of fruit, so we can write:

A + O < 20

A = O + 3

Simplifying:

2O + 3 < 20

2O < 17

O < 8.5

Since O represents the number of oranges, we know that Kim bought fewer than 8.5 oranges. Since she can't buy a fraction of an orange, this means that she must have bought either 8 oranges or fewer.

Now we can use the equation A = O + 3 to find the number of apples she bought:

A = 8 + 3 = 11

So Kim bought 8 oranges and 11 apples.

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The total number of popsicle sticks needed to make one snowman using the given conditions for system of equations is equal to 9.

Let us consider 'x' is the number of popsicle sticks required to make one pencil cup.

And 'y' represents the number of popsicle sticks required to make one snowman.

The required set up two equations are,

8x + 15y = 271  ___(1)

14x + 15y = 373 ___(2)

Multiplying both sides of equation (1) by 14 and both sides of equation (2) by -8 we get,

112x + 210y = 3794

-112x - 120y = -2984

Add both the above equations to eliminate the x variable we get,

⇒ 112x + (-112x) + 210y + (-120y) = 3794 + (-2984)

Simplifying the equation we get,

⇒90y = 810

Dividing both sides by 90 we get,

⇒ y = 9

Therefore, number of popsicle sticks required to make one snowman is equal to 9.

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Harbin was colder than Beijing on that particular day in December because the temperature difference between the two cities was -6ºC.

To figure out which city was colder, we need to compare the difference between the temperatures of the two cities. The temperature difference is the numerical value we get when we subtract one temperature from the other.

In this case, the temperature in Harbin was -8ºC and the temperature in Beijing was -2ºC. To find out which city was colder, we need to calculate the temperature difference between the two cities.

To do this, we subtract the temperature in Beijing from the temperature in Harbin:

-8ºC - -2ºC = -6ºC

So the temperature difference between the two cities is -6ºC. This means that Harbin was colder than Beijing on that day.

We can see that the temperature difference is negative, which tells us that the temperature in Harbin was lower than the temperature in Beijing.

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Answer:

5n = 1.75

Step-by-step explanation:

We are given 1.75 and n 5 times, so

5n = 1.75

Answer: n=0.35

Step-by-step explanation:

Divide 1.75 into fifths and that equals 1 n