The normal price of a laptop’s is 899€.In a sale, it’s price is reduced to 599.95€.How many percent is the discount?

Answers

Answer 1
Answer:   33.26% approximately

Work Shown:

A = original price

B = final price

C = difference in price

C = A - B

C = 899 - 599.95

C = 299.05  <--- this is the amount you save

D = C/A

D = (299.05)/(899)

D = 0.3326

D = 33.26% approximately


Related Questions

Given the figure below, find the values of x and z.
63°
(5x + 48)°

Answers

Answer:

x = 3°

z = 117°

Step-by-step explanation:

Linear pair: If the non-common arm of two adjacent angles form a line, then they are called linear pair and they add up to 180.

Vertically opposite angles are equal.

       5x + 48 = 63

Subtract 48 from both sides,

               5x = 63 - 48

               5x = 15

Divide both sides by 5

               x = 15÷ 5

               [tex]\sf \boxed{\bf x = 3}[/tex]

z + 63 = 180   {Linear pair}

      z  = 180 - 63

       [tex]\boxed{\bf z = 117}[/tex]

What is the cardinality of
{red, yellow}∪{blue}
{∅, {{1}}}
{5, 1}∪{1, 2, 5}

Answers

The cardinality of set {red, yellow}∪{blue} is 3.

The cardinality of set {∅, {{1}}} is 2.

The cardinality of set {5, 1}∪{1, 2, 5} is 3.

How to find the cardinality of the given sets?

Cardinality is the quantity of elements in a particular mathematical set.

The number of cardinal (fundamental) members of a set is referred to as cardinality. A non-negative integer can have a limited or infinite degree of cardinality.

from the question three sets are given

1. {red, yellow}∪{blue}

2. {∅, {{1}}}

3. {5, 1}∪{1, 2, 5}

1. we know that

When A and B are two sets that are not connected, n(A U B) = n(A) + n (B) = 2 + 1.

so there are 3 elements.

so the cardinality of set {red, yellow}∪{blue} is 3.

2. {∅} is a set with a single element. That component is a set in and of itself, means there are two elements.

so, the cardinality of set {∅, {{1}}} is 2.

3. {5, 1}∪{1, 2, 5}

When A and B are two sets that are not connected, n(A U B) = n(A) + n (B).

Here 5 and 1 is common in both so that there are 3 elements.

so, the cardinality of set {5, 1}∪{1, 2, 5} is 3.

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Jon recently drove to visit his parents who live 396 miles away. On his way there his average speed was 21 miles per hour faster than on his way home (he ran into some bad weather). If Jon spent a total of 11 hours driving, find the two rates (in mph). Round your answer to two decimal places, if needed.

Answers

So Jon's rates were approximately 69.55 mph on his way to his parents' house and 48.55 mph on his way back home.

What is equation?

An equation is a mathematical statement that shows that two expressions are equal. It typically consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division, as well as functions such as sine, cosine, and logarithms. Equations can be solved to find the value of the unknown variable that makes the equation true. Solving an equation often involves performing operations on both sides of the equation to isolate the variable. Equations are used in many fields of mathematics and science to model real-world phenomena and to make predictions or solve problems.

Here,

Let's call Jon's speed on his way to his parents' house "x" (in mph). Then his speed on his way back home would be "x-21" (since it was 21 mph slower).

We know that the total distance he traveled was 396 miles, and that he spent a total of 11 hours driving. Using the formula:

distance = rate × time

we can set up two equations based on this information:

396 = x × t1 (for the trip to his parents' house)

396 = (x-21) × t2 (for the trip back home)

We also know that the total driving time was 11 hours, so we have:

t1 + t2 = 11

Now we can solve this system of equations to find the values of x and t1 (and then t2).

From the first equation, we have:

t1 = 396 / x

From the second equation, we have:

t2 = 396 / (x-21)

Substituting these expressions for t1 and t2 into the third equation, we get:

396/x + 396/(x-21) = 11

Multiplying both sides by x(x-21), we get:

396(x-21) + 396x = 11x(x-21)

Expanding and simplifying, we get:

792x - 8316 = 11x^2 - 231x

Putting this in standard form, we get:

11x^2 - 1023x + 8316 = 0

We can solve this quadratic equation using the quadratic formula:

x = [1023 ± sqrt(1023^2 - 4×11×8316)] / (2×11)

x ≈ 69.55 or x ≈ 60.09

Since x is Jon's speed on his way to his parents' house, we can discard the negative solution and conclude that Jon's speed on his way to his parents' house was about 69.55 mph. His speed on his way back home would then be:

x - 21 ≈ 48.55 mph

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In September 2016, the cost of gasoline in Berlin was around 1.25 euros per liter.
What would the equivalent cost be in U.S. dollars per gallon?

1 U.S. dollar = 0.876 euros
1 gallon = 3.785 liters

The equivalent cost would be $ per gallon.

Answers

The equivalent cost will be $5.4 per gallon.

What is an equivalent expression?

The equivalent is the expression that is in different forms but is equal to the same value. Conversion means to convert the same thing into different units.

In September 2016, the cost of gasoline in Berlin was around 1.25 euros per liter.

We know that 1 U.S. dollar = 0.876 euros and 1 gallon = 3.785 liters.

The equivalent cost would be dollars per gallon will be

⇒ 1.25 euros per liter

⇒ 1.25 x [(1/0.876) / (1/3.785)] dollars per gallon

⇒ 1.25 x 1.1415 / 0.2642

⇒ $5.4 per gallon

The equivalent cost will be $5.4 per gallon.

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87.8 + 27.2 + 17.3 = ?​

Answers

Answer: 132.3

Step-by-step explanation:

Answer: 132.3

-

Step-by-step explanation:

Split it into different magnitudes.

0.8+0.2+0.3 = 1.37+7+7 =            2180+20+10 =    110

-

1.3+21 = 22.3       110+22.3=132.3

sophie earns a weekly retainer $355 pluse a commission of 10% sales what are sophie total earning for a week if sgs mafe tge following sales what is Sophie total earning each week

Answers

Sophie earns a weekly retainer $355 , a commission of 10% sales then the Sophie total earning each week = 39.44$

Sophie earns a weekly retainer = $355

Commission = 10% sales

That means 10%x sales

Let us assume,

Sophie total earning for a week if she made the following sales = x

We can write,

Sophie earns a weekly retainer $355 + commission of 10% sales

x = $355 +10% x

10%  means,   10/100 = 0.1x

Then,

x =  $355 + 0.1x

We can calculate the product,

x - 0.1x = 35.5$

x(1-0.1) = 35.5$

We can subtract the values,

0.9x = 35.5$

x = 35.5$/0.9

x = 39.44$

The value of x from the equation is 39.44$

Therefore,

Sophie earns a weekly retainer $355 , a commission of 10% sales then the Sophie total earning each week = 39.44$.

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The sum of -12 and -8 divided by the product of 4 and -5

Answers

Answer is -1

Step by step

We know
Sum = add
-12 and -8
Divided by /
Product = multiply
4 x 5

Equation is (-12) + (-8) / 4 x 5

-20 / 20 = -1

solve for x
9(x + 8)- 4=68

Answers

9x + 72 - 4 = 68
9x + 68 = 68
- 68 -68
9x = 0
/9 /9
x=0

hope this helps
First, distribute the 9 to the variable and number within the parentheses.
9*x+9*8
Then, solve the two multiplication problems and add them to the overall equation.
9x+72-4=68
Combine like terms on the left.
9x+68=68
Subtract the 68 from the left as follows.
8x+68=68
-68 -68
8x=0
Divide by 8.
x=0/8
Simplify that to x=0.
Thus, x=0.

Hope this helps.

A restaurant offers diet soda and regular soda. In one day they sold 91 sodas. If 42 of the sodas they sold were diet, what is the ratio of regular sodas sold to diet sodas told​

Answers

Answer:

Step-by-step explanation:

91 - 42 = 49 (amount of regular sodas sold)

Answer: 49:42

Plato please help

Drag the tiles to the correct boxes. Not all tiles will be used.

Match each function family name to the graph of its parent function.

Answers

Answer:

From top to bottom

radical

rational

exponential  

polynomial  

Step-by-step explanation:

It would have been nice if the graph was clearer so I could see x, y values but here goes

From top to bottom

radical :  appears to be a cube root function, [tex]a$\sqrt[3]{x}$ + b[/tex]

rational : of the form [tex]a\dfrac{1}{x} + b[/tex]. Appears to be a function of the reciprocal of x so rational

exponential  of the form [tex]a^x + b[/tex]

polynomial  of the form [tex]ax^2 + bx + c[/tex]

A student uses the quadratic formula to solve a quadratic equation and determines that one of the solutions is z=3+√-48. What are the values of a and b if this solution is written in the form x = a + bi,
where a and b are real numbers?
a-3 and b=-4√3
a=3 and b= 4√3
a=3 and b=√12
a-3 and b=3√4

Answers

The value of a and b are a = 3 and b = 4√3 which are real numbers.

According to the question the solution that we have been given is:

                            z = 3 + √-48

the general form of the solution given in the question is

                             x = a + bi        (1)

 where , i is known as the iota whose value is equal to √-1

Now to find the value of a and b we will expand the equation given above

                             z = 3 + √-48

                             z = 3 + √(-1)(48)

                             z = 3 + (√-1)(√48)

                             z = 3 + √48 i

                             z = 3 + 4√3 i       (2)

Which is equal to the general equation. Now comparing equation (1) and (2) we get

            a = 3 and b = 4√3

Hence the value are :  a = 3 and b = 4√3.

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Which of the following represents an INEFFICIENT point of production?
a. Point A
b. Point B
c. Point D
d. None
e. Point C

Answers

The point that represents an INEFFICIENT point of production is point A.

The correct answer is an option (a)

In this question we have been given a graph of Skateboards vs. Bikes.

We need to find the point that represents an INEFFICIENT point of production.

Inefficient production means the economy can be producing more goods without using any additional resources.

In given production possibility curve, an INEFFICIENT point of production is point A.

Therefore, the point that represents an INEFFICIENT point of production is point A.

The correct answer is an option (a)

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To advertise their newest
burger, the restaurant is using
a billboard that uses a scale of
1 foot = 9/16 inch . If the diameter
of the actual burger is 4 1/2 inches,
What will be the diameter of the
burger on the billboard?

Answers

The diameter of the burger on the billboard will be  8 foot.

What will be the diameter of the burger?

The burger on the billboard will be larger in size when compared with the actual burger. A scale would be needed to help determine how large in relation to the actual burger the burger on the billboard should be.

In order to determine the diameter of the burger on the billboard, divide the diameter of the actual burger by the scale that would be used.

Diameter of the burger on the billboard = 4 1/2 ÷ 9/16

9/2 ÷ 9/16

9/2 x 16 / 9 = 8 foot

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Suraj took a slice of pizza from the freezer and put it in the oven. The pizza was heated at a constant rate.

The table compares the pizza's temperature (in degrees Celsius) and the time since Suraj started heating it (in minutes).

Time (minutes) Temperature (degrees Celsius)

4 25

6 40

8 55

Answers

The pizza heats up an average of 7.50 degrees per minute.

What is the slope?

Slope or the gradient is the number or the ratio which determines the direction or the steepness of the line.

The table shown

Time (minutes)        Temperature (degrees Celsius)

4                                          25

6                                          40

8                                          55

Since the pizza was heated at a constant rate, we can model the experiment as a line, where the slope represents how fast the pizza was heated

Slope

m   =  (y2 - y1)/(x2 - x1)

Let

(x1,y1) = (6, 40)

(x2,y2) = (8, 55)

m = (55 - 40) / ( 8 - 6 )

m = 7.5 degrees per minute.

The pizza heats up an average of 7.50 degrees per minute

Therefore, pizza heats up an average of 7.50 degrees per minute.

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the distance between -2.2 and 8.4 on a number line

Answers

Answer:

The distance between the two numbers, -2.2 and 8.4 on a number line is:10.6 units.Distance of two numbers on a number line can be calculated by finding the absolute value of the their difference.Thus:if a and b are two numbers on a number line, their distance would be:|a - b| Given two numbers on a number line are:-2.28.4Distance between them = |-2.2 - 8.4| = 10.6 unitsTherefore, the distance between the two numbers, -2.2 and 8.4 on a number line is: 10.6 units.

Step-by-step explanation:

Value
Time
For Exercises 21-23, use the graph at the right.
21. Name the ordered pair at point A and explain
what it represents.
22. Name the ordered pair at point B and explain
what it represents.
23. Identify the independent and dependent

Answers

21. Point A is (1,5) and represents that the dog walker made $5 for one dog walked.

22. Point B is (5,25) and represents that after walking 5 dogs the dog walker made $25.

23. The dependant is the amount earned(y) and the independent is the number of dogs walked (x).

The sum of two numbers is 35. The sum of the smaller and 4 times the larger is 116. Find the numbers.

Answers

The number of the system equations are: 8 and 27.

System of Equations

A system of equations is the given term math for two or more equations with the same variables. The solution of these equations represents the point of the  intersection.

You can solve a system of equations by the adding or substitution methods. In the addition method, you eliminate a variable, on the other hand, in the substitution method you replace a variable for the other.

First, you should convert the text of the question in the math expression. Then,

x+y= 35  (1)

x+4y=116 (2)

After that, you should multiply equation(2) by -1. Thus,

x+y= 35  (1)

-x-4y= - 116 (2)

Now, when you sum equations 1 and 2, you  eliminate x . Thus, from this sum, you will have:

-3y=-81

3y=81

y=81/3

y=27

From equation (1), you can find x.

x+y=35

x+27=35

x=35-27

x=8

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A girl is currently 5 years older than her younger brother and 3 years younger than her older brother. Two years from the current time, the product of the ages of the brothers will be twelve times the age of the girl. What is the current age of the older brother ?

Answers

The current age of the older brother is 16 years while that of the girl is 13 years.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Let x represent the girl age, y the younger brother age and z the older brother age. Hence:

x = y + 5  

y = x - 5    (1)

Also:

z = x + 3   (2)

In two years time:

(y + 2)(z + 2) = 12(x + 2)

(x - 5 + 2)(x + 3 + 2) = 12(x + 2)

(x - 3)(x + 5) = 12(x + 2)

x² + 2x - 15 = 12x + 24

x² - 10x - 39 = 0

x = -3 and x = 13

Age must be positive, hence x = 13

z = x + 3 = 13 + 3 = 16 years

The current age of the older brother is 16 years while that of the girl is 13 years.

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4. The cost of a school banquet is $75 + 30n, where n is
is the cost for 53 people?
the number of people attending. What
© $1,590
O $4,005
© $1,665
O $158

Answers

Answer:

$ 1665 for 53 people to attend

Step-by-step explanation:

75 + 30(53) = 1665  for 53 people in attendance

Answer:

$1,665

Step-by-step explanation:

Side note: The question is quite unclear. In my opinion, the correct question should be - The cost of a school banquet is $75 + 30n, where n is the number of people attending. What is the cost for 53 people?

We know that the value of "n" is the number of people attending at the school banquet. Therefore, if we want to determine the cost of 53 people, we must substitute n = 53.

⇒ $75 + $30n

⇒ $75 + $30(53)                                                     [Substituting n = 53]

⇒ $75 + $1590                                                                [Simplifying]

$1665                                                                         [Simplifying]

Therefore, the total cost of 53 people attending the school banquet is $1665.

Find the average (mean) of the set of numbers.

8,5,5,7,6,6,5

Answers

Answer:

6

Step-by-step explanation:

you add all of the numbers, take the sum and divide between however many numbers are present.

Amy was looking at a table of conversions from meters to kilometers. The table showed that 2 kilometers are equivalent to 2,000 meters. How can she determine how many kilometers are equivalent to 8,000 meters?

Answers

The number of kilometers that is equivalent to 8,000 meters is 8 kilometers

Conversion of Units

From the question, we are to determine how Amy can determine how many kilometers are equivalent to 8,000 meters

Let the value be x kilometers

From the given information, we have that

The table showed that 2 kilometers are equivalent to 2,000 meters

If 2 kilometers are equivalent to 2,000 meters

Then,

x kilometers will be equal to 8,000 meters

x = (2×8000)/2000

x = 16000/2000

x = 8 km

Hence, the number of kilometers that are equivalent to 8,000 meters is 8 kilometers

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`2.5` ft/second.



Write an equation modeling the change in elevation `c` after `s` seconds.

Answers

The following equation represents the elevation change c after s seconds:

                      c = -2.5s

Given,

A mountain climber is moving 2.5 feet per second down a cliff.

Writing an equation to represent the change in elevation after s seconds is necessary.

How do we symbolize ascent and descent?

Elevation denotes upward movement, thus we interpret it as a positive distance

Descent implies a downward motion, thus we interpret it as a negative distance.

Find the rate at which the climber descents.

2.5 ft = 1 second

Find the equation that, in seconds, reflects the descents c.

We have got

2.5 ft = 1 second

So,

s x 2.5 ft = s x 1 seconds

2.5 s ft = s seconds

That means,

We will have a 2.5s distance descending in s seconds.

This can be expressed as an equation:

c = change in elevation

c = - 2.5s

Thus the equation modeling the change in elevation c after s seconds is,

                      c = -2.5s.

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Can anyone help me with #85?

Answers

Part (a)

[tex]\overline{x}=\frac{\sum x}{n} \\ \\ \boxed{\sum x=n\overline{x}}[/tex]

Part (b)

[tex]\sum x^2-2\overline{x}(n\overline{x})+n\overline{x}^2 \\ \\ =\sum x^2 -2n\overline{x}^2+n\overline{x}^2 \\ \\ =\boxed{\sum x^2-n\overline{x}^2}[/tex]

which is equivalent to 1/ 10×10×10×10? A) 10^-4 B) -10^4 C) 1/10^4 D) 10^4​

Answers

Answer:

Step-by-step explanation:

We know that 2^2 = 4, or 2x2=4 2x2x2=2^3

so, it is only true that 10x10x10x10=10^4

Hope this helps!^^


Jai found the sum of three numbers as 90. He then changed the numbers.
He decreased the first number by 10.
He increased the second number by 30.
He decreased the third number by 20.
What is the sum of the three new numbers?
a. 60
b. 90
c. 120
d. (It depends on the original numbers)

Answers

it depends on the original numbers

last question of the day i kinda need halp

Answers

Answer:

First one

Step-by-step explanation:

Did math

The formula for the surface area, S, of a cone is shown below. solve the formula for the length l.

Answers

Solution,

Here,

S = Surface area of cone

r = Radius

l = length

Now,

S = πr^2 + πrl

or, S = πr(r + l)

or, S ÷ πr = r + l

or, S ÷ πr - r = l

or, l = S ÷ πr - r

Therefore,the formula for the length will be

l = S ÷ πr - r

If y varies directly with x and y is 37.4 when x is 17, what is the value of x when y is 13.2?

Answers

Answer:

6

Step-by-step explanation:

We have y ∝ x which is another way of saying y varies directly with x

We can rewrite the direct proportion relation y ∝ x as y = k.x where k is a constant - the constant of proportionality

So y = kx or x = y/k

using y and x values know, we can solve for k and then solve for any x given y

We have

y = 37.4 =  k (17)

Therefore k = (37.4/17) = 2.2

To find x given y = 13.2, use the second equation
x = y/k = 13.2 / 2.2 =  6

Can someone please help me! I would appreciate it

Answers

11.45 miles: 3.7+4.5+3.25=11.45

Just need it double checked

Answers

Answer:

Step-by-step explanation:

Looks good

Answer:

I think it is correct and also check to your teacher also

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