A store purchased model railroad sets for 400 and sold them for 444 what percentage is the mark-up

Answer:

s = 47

Step-by-step explanation:

The measure of the exterior angle of a triangle is equal to the sum of the opposite interior angles

s+45 = s+6  + s-8

Combine like terms

s+45 = 2s-2

Subtract s from each side

s+45-s =2s-2-s

45 =s-2

Add 2 to each side

45+2 = s-2+2

47 =s

Answer:

yeah you just have to hope you got it correct until they tell you or give you brainliest

Answer:

This is a english server-

Step-by-step explanation:

Answer:

Answer is in a photo. I couln't attach here, but l uploaded it to a file hosting.

link below! Good Luck!

bit. ly/3a8Nt8n

Step-by-step explanation:

Answer: 13440 grams

Step-by-step explanation:

Since 1 kg is 1000 g, multiply 0.64 by 1000 to find how many grams are in a kilogram.

0.64x1000

=640 grams

She uses 640 grams each day.

How many grams does he use in 3 weeks?

1 week has 7 days

3 weeks has 21 days

3x7=21

640x21

13440 grams

Answer:

[tex]\frac{x}{y}[/tex]45 long

Step-by-step explanation:

The total area of both the triangles is 56.25 square units.

When two triangles are similar, the reduced ratio of any two corresponding sides is called the scale factor of the similar triangles.

The space occupied by a flat shape or the surface of an object is called area.

Area = (1/2) × base × height

According to the given question.

We have a two triangles, which are similar to each other.

Let the length of the side DE in triangle DEF be x.

Since, ABC similar to DEF

⇒[tex]\frac{AB}{DE} =\frac{BC}{EF}[/tex]

⇒[tex]\frac{12}{x} =\frac{6}{4.5}[/tex]

⇒[tex]\frac{12(4.5)}{6} = x[/tex]

⇒[tex]2(4.5)=x[/tex]

⇒ [tex]x = 9[/tex]

Now, area of triangle ABC = [tex]\frac{1}{2}(6)(12)=36 square units[/tex]

Area of triangle DEF = [tex]\frac{1}{2} (9)(4.5)= 20.25square units[/tex]

Therefore,

The total area for both the triangles

= 36 + 20.25

= 56.25 square units

Thus option B is correct.

Find out more information about area of similar triangles here:

https://brainly.com/question/16394875

#SPJ2

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

I think you mean 3(x+8)², not 3(x+8)2. If you cannot type ², use ^ to mark the exponent: 3(x+8)^2.

3(x+8)² + 8 = 83

3(x+8)² = 75

(x+8)² = 25

x+8 = ±√25

x+8 = ±5

x = -8 ± 5 = -3, -13

Answer:

Step 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

a) y=[tex]x^{2} -4x[/tex]

x=-1 ⇒ y=[tex](-1)^{2} +4=1+4=5[/tex]

x=1    ⇒  y=[tex]1^{2} -4=1-4=-3[/tex]

x=2 ⇒   y=[tex]2^{2} +8=4-8=-4[/tex]

x=4   ⇒  y=[tex]4^{2} -16=16-16=0[/tex]

b) [tex]x^{2} -4x[/tex]=[tex]x^{2} -4x+4-4=(x-2)^{2}-4[/tex]

so the blue one

Answer:

56.5 in^2

Step-by-step explanation:

The volume of a cone is π[tex]r^{2}[/tex]h/3. The radius is d/2=6/2=3

V=(3.14 x [tex]3^{2}[/tex] x 6)/3

 =(3.14 x 54)/3

 =169.56/3

 =56.52

Answer:

Let n be the number of 25 cent stamps.Then, 28 - n must be the number of 29 cent stamps.Tim paid $7.60 the stamps.

0.25n + 0.29(28 - n) = 7.60

This means that n stamps at 25 cents a piece plus (28 - n) stamps at 29 cents a piece sum to $7.60.Solve for m.

0.25n + 8.12 - 0.29n = 7.60

-0.04n = -0.52

n = 13

So, Tim bought 13 25-cent stamps and 28 - 13 = 15 29-cent stamps

Step-by-step explanation:

hope this helps:)

Answer: 16,21

Step-by-step explanation:

There are two ways you can solve this problem using substitution and elimination.

In this answer, I'm going to be using substitution.

First, you make two equations based on the information given.

The two equations are 0.15x+0.2y=6.6 and X+Y=37.

In the second problem subtract y to move it to the other side to get X=37-y.  

Now that you got x= make a new equation which should be 0.15(37-y)+0.2y=6.6 use distributive property to get 5.55-.15y+0.2y=6.6.

Then, subtract 5.55 by 6.6 to get 1.05 and 0.2y+-.15y to get 0.05 y.

Now you have 0.05y=1.05 divided 0.05 and 1.05 to get 21.

Now plug 21 into the X+Y=37 equation to get X+21=37 subtract 21 from 37 to get X=16.

So X=16 and Y=21, so the answer is 16,21.

Answer:

Red- 1/4 or 25% chance

Number less than six- 5/8 or 62.5% chance

The necklaces will be sold for $8.75.

All you have to do is devide 201.25 by 23 and you will get your answer.

Answer:

If a basketball player consistently shoots 80% from the free throw line and she takes 25 free throw shots throughout the course of a game, how many free throws can she be expected to make?

A basketball player makes 75% of the free throws that he attempts. What is the probability, approximated, that he succeeds in half of them in 40 trie

Answer:

Its a trick question

Step-by-step explanation:

Answer:

5 / 8 = 0.625 is best equivalent.

Answer:

419 or 419.37

Step-by-step explanation:

55 x 6.625 = 364.375

364.375 = 364.37 (Rounded to the Nearest 10)

55 + 364.37 = 419.37

--------------------------⭐OR⭐------------------------------

55 x 6.625 = 364.375

364.375 = 364 (Rounded)

55 + 364 = 419

Answer:

B. (1,2)

Step-by-step explanation:

Answer:

heyhey! your in luck, Im here again <3

Step-by-step explanation:

The coordinates are ( 1,2 ) . In answer, its B. Why? Well the distance in between was 5, and the middle landed right after the line, which landed of the coordinates ( 1,2 ) . Your welcomee!

Answer:

$317

Step-by-step explanation:

Formula for compound interest is;

A = P(1 + (r/n))^(nt)

For melanie;

P = $3800

r = 2⅜% = 0.02375

n = 12/4 = 3

t = 16 years

Thus;

A = 3800(1 + (0.02375/3))^(3 × 16))

A ≈ $5548

For Sébastien;

P = $3800

r = 2¾% = 0.0275

n = 12

t = 16

Thus;

A = 3800(1 + (0.0275/12))^(12 × 16))

A ≈ 5865

Difference between Sébastien and Melanie's final amount = $5865 - $5548 = $317

Answer:

The required division is 658 and 342.

Step-by-step explanation:

Let the parts be x and y.

47x + 19y = 1000

let try 2digit number for x and y by inspection 14 and 19 best fit.

47*14 + 18*19 = 1000

658 + 342 = 1000

Answer:

Lilly, since the angles are the same we can set the equal to each other, that's the "trick" of this problem

Step-by-step explanation:

3x + 50 = 6x - 10

3x + 60 = 6x

60 = 3x

20 = x

see how I got that?

Answer:

The slope is y=0.59x so 0.59

The y intercept is 0

Answer:

careful of taking pictures of problems. I got warnings and questions deleted when I had the picture of my question since it was violating the code of brainly since it was a different cite. -_-

Step-by-step explanation:

Answer:

2.) 385

Step-by-step explanation:

V=πr2h

3=π·72·7.5

3≈384.8451

rounded=385.

Answer:

2.57 and 11/3 and 3.14

Step-by-step explanation:

Answer:

The measure of the arc length is 62 degrees

Step-by-step explanation:

Here, we want to find the given arc measure

Mathematically, we are going to use the angle arc relationship

For the angle arc relationship, the measure of the central angle is simply the measure of the arc

In this case, the central angle is 62: this means that the given arc measure is 62 degrees too

Answer:

2/19

Step-by-step explanation:

Answer:

1.) 8x+28      2.) 2(4x+14)

Step-by-step explanation:

simplify it by multiplying the 4

or

after simplifying you could divide by 2

option 1 is the best answer

Answer:

2/3

Step-by-step explanation:

3/4 x 8/9 = 24/36 or 2/3 simplified