Mathematics College

Rosie sells her laptop to John and makes a 15% profit. John then sells the laptop to
Michael for £391. John makes a 15% loss. How much did John pay for the laptop?

Answers

Answer 1

Answer:

John pay:449.65

Step-by-step explanation:

(391×15)÷100=58,65

391+58,65=449,65

Answer 2
john has to pay 449.65. good luck!

Related Questions

Driving 65 mph, it takes Alicia 2 hours to reach the airport to go on vacation. It then takers her 2 hours to get to her destination with a jet traveling at a speed of 350 mph. How many miles does Alicia travel to get to her destination? *
10 points
765 miles
830 miles
480 miles
415 miles

I’m giving 30 points

Answers

Around 765 miles is my guess.

Answer:

830 miles

Step-by-step explanation:

By car, she travels 65 mph for 2 hours. 2 multiplied by 65 equals 130. She then travels 350 mph for 2 more hours by plane. 2 multiplied by 350 equals 700. Add the two distances together and you get 130 + 700 = 830

Un radar de l'armée américaine réussit à détecter tout ce qui se trouve à un rayon représenté
par cette inéquation :
5r + 9 > 10r - 126

Trouve l'ensemble-solution de cette inéquation.

Donne ta réponse en compréhension.
aider moi svp ​

Answers

Répondre:

r <27

Explication étape par étape:

Compte tenu de l'inégalité 5r + 9> 10r - 126

Nous devons trouver l'ensemble de solutions

5r + 9> 10r - 126

Ajouter 126 des deux côtés

5r + 9 + 126> 10r - 126 + 126

5r + 135> 10r

5r-10r> -135

-5r> -135

Divisez les deux côtés par -5 (notez que le signe changera)

-5r / -6 <-135 / -5

r <27

Par conséquent, les ensembles de solutions sont des valeurs inférieures à 27

5 - 2 (a + 3b) / 2 = ? / ?

Answers

Answer:

(5-2a+6b)/2

Step-by-step explanation:

According to PEMDAS, we would multiply 2 by (a+3b) first. This would equal 2a+6b. Since this is being subtracted from 5, the numerator would equal 5-2a+6b. This would bring the simplified answer to (5-2a+6b)/2

Meredith buys a bag containing eight apples for $3.50. When she gets home, she realizes one of the apples is rotten, so she throws it away. What is the actual cost for each non-rotten apple, in cents?

Answers

Answer:

50 cents

Step-by-step explanation:

18 red buttons: 12 blue buttons as a fraction in simplest form

Answers

Answer:

3/2

Step-by-step explanation:

18 red buttons: 12 blue buttons

18/12

Divide the top and bottom by 6

18/6 = 3

12/6 = 2

3/2

Answer:

3/2

Step-by-step explanation:

18/12 can be broke down and easily simplified given the numbers are even.

18 divided by 2 = 9

12 divided by 2 = 6

9/6

18 divided by 3 = 6

12 divided by 3 = 4

6/4

Simplest form;

18 divided by 6 = 3

12 divided by 6 = 2

3/2

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

Hope this helps!

The area of a square is always greater than its perimeter. Which of the following side-lengths for a square provides a counterexample that disproves the statement above?A. 2TT.B. 4.C. 7.5.D. 10.E. 125.

Answers

Answer:

a. 2

Step-by-step explanation:

Area of a square is calculated as:

[tex]Area = Length * Length[/tex]

And the perimeter is

[tex]Perimeter = 4 * Length[/tex]

For (a):

[tex]Length = 2[/tex]

[tex]Area = 2 * 2 = 4[/tex]

[tex]Perimeter = 4 * 2 = 8[/tex]

For(b):

[tex]Length = 4[/tex]

[tex]Area = 4 * 4 = 16[/tex]

[tex]Perimeter = 4 * 4 = 16[/tex]

For (c):

[tex]Length=7.5[/tex]

[tex]Area = 7.5 * 7.5-56.25[/tex]

[tex]Perimeter = 4 * 7.5 = 30,[/tex]

For (d):

[tex]Length = 10[/tex]

[tex]Area = 10 * 10 = 100[/tex]

[tex]Perimeter = 4 * 10 = 40[/tex]

For (e):

[tex]Length = 125[/tex]

[tex]Area = 125 * 125 =15625[/tex]

[tex]Perimeter = 4 * 125 = 500[/tex]

From (a) to (e), only side length 2 has a higher perimeter.

Hence, it disproves the statement

Please help me asap

Answers

Answer:

She walked 1.5 miles, then 0.75 miles. Hence 1.5 + 0.75= 2.25 or 2 and 1/4 a mile

For an ellipse whose minor axis is vertical, how does the value of b compare to the distance from the vertices on the vertical axis to the center?
a. same c. no comparison b. different d. none of the above

Answers

Answer:

A

Step-by-step explanation:

i just took the lab assessment

PLEASE HELPPPP!!!????!!?

Answers

Answer:

I might be wrong but I think it is c

Step-by-step explanation:

i’m not asking for much :(

Answers

Answer:

c

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

mcfluffythebigrubberducky

a) are the triangle similar
b) solve for x

Answers

Answer:

Yes, the triangles are similar because they have the same 2 angles congruent, and X=12.44

Step-by-step explanation:

Analyze each step to identify if Andy made an error. Yes, he made an error in Step 1. He switched the x and y values. Yes, he made an error in Step 2. He did not distribute StartFraction 3 Over 4 EndFraction properly. Yes, he made an error in Step 3. He should have subtracted 2 from both sides. No, his work is correct.

Answers

Answer:

Step 3, because the values for x for which y^1 < y^2 also include values between 3 and 5.

Step-by-step explanation:

Just took the test.

Answer:

c

Step-by-step explanation:

it just is

I need help, I will give the brainiest
Also, KJL is 54

Answers

Answer:

Step-by-step explanation:

Traingle 72 LN

Proving Triangles Congruent.

Answers

Answer:

2) given

3) common side

4)angleuwx = angleuwv. ( right angles triangle )

5) angle x = angle y(side angle of isoceles triangle are equal)

The blue dot is at what level on the number line

Answers

Answer:

The dot is at positive 4.

8/12 = 2/9
What is the answer hurry please due today

Answers

Answer:

1/3

Step-by-step explanation:

Solve for p.
8 = = 4(p – 17)
p =

Answers

Answer:

p=19

Step-by-step explanation:

Distribute:8=4p-68

76=4p

p=19

(can I get brainliest)

Simplify. 310−−√ please help me

Answers

Answer:

17.606

Step-by-step explanation:

root of 310  = 17.606

Answer:

√30/10

Step-by-step explanation:

calculator

which describes the combined variation in the formula h=V/pie r2

Answers

Answer:

The correct option is (c).

Step-by-step explanation:

The combined formula is given by :

[tex]h=\dfrac{V}{\pi r^2}[/tex] ...(1)

h is height

V is volume

r is radius

It is clear from formula (1) that h varies directly with V and inverse;y with the square of r.

Hence, the correct option is (c).

Answer:

h varies directly with V and inversely with the square of r.

Step-by-step explanation:

(Since pie is a constant, it's not said in the "sentence")

I also just got it right on the quiz.

the next model of a sport car will cost 14.9% more than the current model. The current costs $43,000. how much will the price increase in dollars ? what will be the price of the next model

Answers

Answer:

The price of the new model will be $49,407.

Step-by-step explanation:

Percentages

The current model of a sports car costs $43,000. The new model is expected to cost 14.9% more than the current model.

The increase is:

14.9% of $43,000

=14.9/100 * $43,000

=$6,407

The cost of the new model is:

$43,000 + $6,407 = $49,407

The price of the new model will be $49,407.

work out the subtraction equation of 5 1/4 divided by 2 5/7 equals​

Answers

Answer:

calculater or hackmath

Step-by-step explanation:

Find the interest due on $1,090 at 8% for 5 years.

Answers

Answer:

$1601.57, $511,57 more intrest

Step-by-step explanation:

1,090*1.08^5

= 1601.5676

Round up to get 1601.57

Interest = Principal × rate × time/100

=> 1090×8×5

= 43,600/100

=> $436

Hope it helps!

Write the expression in exponential form.
3
4/16^

A)
1/4
13^
B)
3/16
4^
C)
16/3
4^
D)
3/4
16^

Answers

Answer:

B

Step-by-step explanation:

2x2−3x−4=0 Solve using the quadratic formula.

Answers

Answer:

Step-by-step explanation:

2x2−3x−4=0

For this equation: a=2, b=-3, c=-4

2x2+−3x+−4=0

Step 1: Use quadratic formula with a=2, b=-3, c=-4.

x=

−b±√b2−4ac

2a

x=

−(−3)±√(−3)2−4(2)(−4)

2(2)

x=

3±√41

4

In a flower basket, the ratio of red roses to white roses is 2 to 3. There are a total of 20 roses in the basket. How many red roses are in the basket?

Answers

Answer: 8 red roses are in the basket.
Explanation:
ratio is 2:3
let’s say red roses are 2x and white roses are 3x.
The total number of roses is 20, then, to find the number of red roses, write:
2x+3x= 20
5x=20
x=4
red roses are 2x
x=4,
hence, put 4 instead of x, and you will get 2*4= 8
Hope it helps!!!
If it does, then give click the brainliest button! thanks in advance!

which statement best describes the solution to the system of equations?

Answers

Answer:

option a is correct

Step-by-step explanation:

I think

Answer:

D -  It has a single solution: x = -3, y = 26.

Step-by-step explanation:

Line t has slope 3/4 and passes through (0.0). Follow these steps: Step 1:
Start at (0,0), Step 2: Move right 8 units. *

Answers

Answer:

6

Step-by-step explanation:

completing step 2 will land you at (8,0). you would just need to count up from there until you reach the line.

please help this question

Answers

Answer:

t should also be 82

Step-by-step explanation:

Because they are the same angle.

Sorry in the chance i am wrong. :D

A quantity with an initial value of 7800 decays exponentially at a rate of 2% every 3
years. What is the value of the quantity after 4.7 decades, to the nearest hundredth?

Answers

Answer:

5683.77

Step-by-step explanation:

i am new so i have no clue what i am doing but i have a question. what are the points for and what do you do with them?

Answers

Points is for asking questions, getting points when you answer questions.
Other Questions
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