Peter bought a pen for $120 and sold it to gain 20% on his cost price. How much did he gain?

Answers

Answer 1

Answer: He gained 24 dollars.

Step-by-step explanation:


Related Questions

Solve the inequality 2 (m+3) +1 > 23

Answers

Answer:

m>8

Step-by-step explanation:

The first step will be to distribute the 2, so that the equation becomes 2m + 6 + 1 > 23.

From here we should combine like terms, which just means adding 6 and 1, so that the equation is now 2m+7>23. Now, we just subtract 7 on both sides, which brings leave us with 2m > 16.

Lastly dividing by 2 on both sides, the answer is m>8

2x^3-3x^2+kx-1 is divided (x-1),the remainder is 2 find k

Answers

Answer:

k = 4

Step-by-step explanation:

if f(x) is divided by (x - h) then f(h) is the remainder

f(x) = 2x³ - 3x² + kx - 1

divided by (x - 1) , so h = 1 , then

2(1)³ - 3(1)² + k(1) - 1 = 2

2 - 3 + k - 1 = 2

- 2 + k = 2 ( add 2 to both sides )

k = 4

Triangle abc is an isosceles triangle in which angle b = angle c and l and m are points on ab and ac respectively such that lm parallel to bc. If angle a = 50 degree find angle lmc

Answers

Answer:

∵ ABC is an isosceles  triangle

∵ m∠b = m∠c

∴ m∠b and m∠c = 180 - m∠a/2

= 180 - 50/2

= 130 /2

= 65°

∵ ∠c and ∠AMI are corresponding angles

∵ m∠AMl = m∠c = 65°  (1)

From (1)

∵ ∠AMC is striaght angle

∴ m∠IMC = 180 - m∠AMI

m∠IMC = 180 - 65

m∠IMC = 115°

Answer = 115°

Figure of your question in the attachment

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Answers

Answer:

$8553.87

Step-by-step explanation:

Formula = Initial amount x (1+(%/100) squared by (t) years or time.

7600 x 1.03^4 =8553.86696 = $8553.87 nearest penny rounded up.

To reverse such amount if given percentage (%) time (t) and (nv) new value to question. We realise it has asked the opposite in asking to find the initial investment it may say what Did Dan initially or originally invest? we would divide new amount by (1+) (%/100)^(t) and percentage and show like this;

8553.87 / 1.03^4= 7600.0027  = $7200 for initial investment.

However the question asks for total new value of investment after 4 years.

So the first formula is shown and shows answer to be  $8553.87

The graph of which inequality has its vertex at (2 1/2, 5)?
The correct answer to this is y>|2x-5|+5.
My question is where did the 2 1/2 come from in the vertex?

Answers

Answer:

77777

Step-by-step explanation:

In this case, the vertex is the lowest point of the V shaped curve.

The goal is to get the stuff inside the absolute value (the 2x-5) to be as small as possible, so we can get to the lowest point. In terms of absolute value, we want the 2x-5 to be equal to 0

This allows us to set up the equation below and solve for x.

2x-5 = 0

2x = 5

x = 5/2

x = (4+1)/2

x = 4/2 + 1/2

x = 2 + 1/2

x = 2 & 1/2

Let me know if this clears things up or not.

Graph the line that passes through the two points.(1, 5/2), (−1/2,−1/4)

Answers

Answer:

To find the slope of a line, simply use the slope formula [(y2-y2)/(x2-x1)].

To find the y-intercept, simply plug in point values to solve for b.

The line that passes through the two points (1, 5/2) and (-1/2,-1/4) is y=1.8x+0.7.

The given coordinate points are (1, 5/2) and (-1/2,-1/4).

What is slope of a line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The formula to find the slope of a line is slope = (y2-y1)/(x2-x1)

Substitute (x1, y1)=(1, 5/2)=(1, 2.5) and (x2, y2)=(-1/2, -1/4)=(-0.5, -0.25) in slope formula, we get

Slope =(-0.25-2.5)/(-0.5-1)

= -2.75/(-1.5)

= 1.8

Put m=1.8 and (x, y)=(1, 2.5) in y=mx+c, we get

2.5=1.8×1+c

c=0.7

So, equation is y=1.8x+0.7

Hence, the line that passes through the two points (1, 5/2) and (-1/2,-1/4) is y=1.8x+0.7.

To learn more about the slope of a line visit:

https://brainly.com/question/14511992.

#SPJ2

MARKING BRAINLEIST IF YOUR ANSWER IS RIGHT!!

Answers

The answer is:
1/10y

What is the equation of the line that passes through (0,5) and (3,8)?
A. y= 1x + 5
B. y=-1x - 5
C. y=-1x + 5
D. y = 1x - 5

Answers

Answer:

A. y= 1x + 5

Step-by-step explanation:

Answer:

A. y=x+5

Step-by-step explanation:

(0,5):

x=0

y=(0)+5=5

(3,8):

x=3

y=(3)+5=8

I hope this help you

Yani buys 4 dozen flyers for $7.25. What is the cost for 12 dozen

Answers

$21.75

4x3=12

7.25x3=$21.75

Which of the following shows the translation of K(3, 2) two units down?

Answers

(3,0) is 2 units down! Subtract 2 from y:)

Given the relation {(2, 3), (-2, 2), (1, 5), (0, -1)}, state the range!

A. {-1, 2, 3, 5}

B. {-2, 2, 0, 1}

C. {-2, 2, 5}

D. {-2, -1, 0, 1}

Answers

Determine the domain and range of the given function:

y = –x4 + 4

This is just a garden-variety polynomial. There are no denominators (so no division-by-zero problems) and no radicals (so no square-root-of-a-negative problems). There are no problems with a polynomial. There are no values that I can't plug in for x. When I have a polynomial, the answer for the domain is always:

the domain is "all x".

The range will vary from polynomial to polynomial, and they probably won't even ask, but when they do, I look at the picture:

graph

The graph goes only as high as y = 4, but it will go as low as I like. Then:

The range is "all y ≤ 4".

HI, I NEED HELP WITH MATH KNOW ANY TUTORS?

Answers

Answer:

no but I may be able to help with the problem make a question with the problem and a bunch of people will help and 8 times out of ten they will go e an explanation

Fine the volume of the prism 5m 3m 3m

Answers

Answer:

45

Step-by-step explanation:

To find the volume of an object, we just have to multiply all of the side lengths together.

[tex]5*3*3=45[/tex]

[tex]V=45[/tex]

5 (3) 3         m (m) m = m cubed

15 (3)

45

45m³

how does the number line below represent the product of a positive number and a negative number? drag words and numbers to explain. each tile may be used once, more than once, or not at all

Answers

Answer: -1.5, negative, negative

Step-by-step explanation:

The first box: -1.5

The second box: negative

The third box: negative  

Use the distributive property to solve 2x4(x-3)=-5+2x+9 i just cant understand the first few steps so if you could explain that please and thank you

Answers

3.057849735 is the answer , I can’t do it step by step but I hope this helps

What is the value of the expression 3a+b2 when a=14 and b=32 ?




−38

98

92

I don't know.

Answers

Answer:

106

Explanation:

3a+b2

Substitute the values for the variables:

3(14) + 2(32)

Solve:

3(14) + 2(32)

42 + 64

106

9/8 trust me +_+ X_X C_C V_V N_N

Just h-h-helllllllllllllllllppppp meeeeeeeeeeeeee oooo ba bea

Answers

Answer: True, False, False, True, False

Step-by-step explanation: Fractions are easy.

A train left isiolo on Friday at 11:45 pm.it took 8 hrs 55 mins to reach Nairobi. When did the train reach Nairobi? A . Saturday 8:40pm B.saturday 8:00pm C. Friday 8; 40pm. D. Saturday 840am​

Answers

Answer:

D.Saturday 8:40am

Step-by-step explanation:

11+8=19 (7)

45+55=100

one hour(100) makes 60 minutes

100-60=40

Therefore the answer is Saturday 8:40am

3/4 + x = 2x — x + ?​

Answers

Answer:

3/4

Step-by-step explanation:

please mark me as brainlest

The volume of a cube of ice for an ice sculpture is 64000

Answers

no question to answer

Step-by-step explanation:

a school, a library, and a store are on the same straight read. The school is located 12 miles from the store. The library is located between the school and the store and is 7.4 miles from the store. What is the distance in miles between the school and the library?

Answers

Answer:

4.6 miles

Step-by-step explanation:

Subtract the distance of the library to the store from the store to the school.

12-7.4=4.6

Emily has a piggy bank that contains 30 coins in dimes and nickels. Their combined value is $2.10. How many coins of each kind are there?

Answers

Answer:

Step-by-step explanation:

Though we can divide this second equation by five and combine, let's multiply the first equation by five and subtract it from the second...

10d + 5n = 210

-(5d + 5n = 150)

and we get

5d = 60

d = 12 dimes

n = 30-12 = 18 nickels

The sum of 3 consecutive numbers is 41 less than five times the largest number. Find the largest number

Answers

x - 2 + x - 1 + x = 5x - 41 , x being the largest number. The largest number is 19.

AB=4cm BC =5cm CD =8cm .Calculate the area of rectangle BCDE​

Answers

Step-by-step explanation:

1.2

area of triangle = ½ × base × height

so,

height = 5cm

base = 4cm

now,

1/2 × 4 × 5

2 × 5 = 10 cm²

therefore, area of the AED is 10cm².

1.3

area of rectangle = l × b

length = 8cm

breadth/width = 5cm

now,

area of BCDE

8 × 5 = 40 cm²

now,

area of,

ABCD = BCDE - AED

ABCD = 40 - 10 = 30

therefore, required area of ABCD is 30cm².

hope this answer helps you dear...take care and may u have a great day ahead!

The larger of two numbers is 5 more than the smaller. The smaller number plus the larger equals 100. Find the number.

Answers

Answer:

Smaller number-47.5

Larger number-52.5

Step-by-step explanation:

We will make the smaller number x. If the smaller number is x, then the larger number will be equal to x+5. We also know that when we add the two numbers, we get 100. We can make the equation

x+x+5=100

100-5=95

2x=95

95/2=47.5

x=47.5

The smaller number equals 47.5 and the larger number is 47.5+5 which equals 52.5

Help me I’ll give you five stars

Answers

Answer:

[tex]\frac{1}{9}[/tex]

Step-by-step explanation:

Note the bar above 1 means 1 is repeating , that is

0.111..

We require 2 equations with the repeating digit placed after the decimal point

let x = 0.111.... (1) Multiply both sides by 10

10x = 1.111... (2)

Subtract (1) from (2) thus eliminating the repeating digit

9x = 1 ( divide both sides by 9 )

x = [tex]\frac{1}{9}[/tex]

Answer:

that was the great answer its 1/10

What is (0,5) and (2,14) in slope intercept form

Answers

Answer:

y = 9/2x + 5

Step-by-step explanation:

ok first find the slope with equation (x2 - x1 over y2 - y1)

14 - 5 = 9/

2 - 0 2

so 9/2 is your slope so now pick one of the points (let's do 0, 5) and plug that into the slope intercept form (y = mx+b)

5 = 9/2(0)+b

9/2 • 0 = 0 so b = 5

so the answer is y = 9/2x + 5. hope this helps!

answer asap plsss ,

Answers

Answer:

4 3/8

Step-by-step explanation:

brainliest pls?

Answer:

C or the third one

Step-by-step explanation:

what is 999999999/900

Answers

Answer:

1111111.11 is the answer.....

Joseph traveled from Boston to Framingham at 50 mph and then back to Boston at 40 mph, What was Joseph average speed on the round trip? (its not 45mph just to let you know)

Answers

Answer:

44.44 mph

Step-by-step explanation:

Since we are given 50 from the start, and 40 at the end, we will add 50 and 40.

50 + 40 = 90

Then, Divide the result by 2.

90 ÷ 2 = 45

Here is the tricky part: we are not done!

Don't be mistaken by the question. Some people may think the answer is 45mph because that is what it is rounded up, however, the question did not ask for the answer rounded up.

This is a round trip, so reduce this to the nearest value in both tenths and units. Hence, it would be 44.44.

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