r+b=7
3.75r+2.75b=22.25

Answers

Answer 1

Answer:

Step-by-step explanation:

hello :

r+b=7... (*)

3.75r+2.75b=22.25.... (**)

use (*) :  r = 7 - b

put this value in (**) :

3.75(7 - b)+2.75b =  22.25

26.25 -375b +2.75b = 22.5

-375b +2.75b = 22.5 - 26.25

- b = -3.75

so : b  = 3.75

but : r = 7 - b

r = 7 - 3.75

r = 3.25


Related Questions

How many sides does a polygon have?

Answers

Answer:

it can have any about 3 and up as long as it is a 2d shape and it has to have straight lines

Answer:

They all vary. All a polygon needs is straight sides, two dimensions, and equal length sides.

Step-by-step explanation:

Hope this helps!

help pleaseeee, I don't understand​

Answers

Answer:

B.

Step-by-step explanation:

2x+4-1

What is the area of the figure below?
3 in.
3 in.
5 in.
5 in.
3 in.
3 in.
7 in.

Answers

The answer to your question is 67

Answer:

68 inches squared

Step-by-step explanation:

First, let's find the area of the squares at the top and bottom. Area for a square is:

L * W = A

Plug in the values...

3 * 3 = 9

Therefore, the area of the two squares combined is 18 inches (since 9 + 9 = 18). Now, the hexagon in the middle, which is the hardest part. We will have to separate it into 4 triangles and a rectangle, for simplification. We need to find the base widths of the triangles, which are:

7 (total width) - 3 (middle width) / 2 (because there are two sides)

So it is:

(7 - 3)/2

4/2 = 2

So, the base of the triangle is two inches. We also know that the height of the triangle is five inches. The formula for the area of a triangle is:

(B * H)/2 = A

Fill it in...

(2 * 5)/2

10/2 = 5 inches

So, the area of each triangle is 5 inches. Since there are four triangles, we need to do:

5 * 4 = 20 inches

That means that all of the triangles combined is 20 inches. Lastly, we need the middle part of our hexagon. It is 10 inches tall, and three inches wide. So...

L * W = A

10 * 3 = 30

So, that means that the area of the hexagon is:

30 + 20 = 50

Plus, the two squares from the beginning:

50 + 18 = 68 inches squared

Therefore, the area of the figure is 68 inches. Hope this helps you!

Identify a transformation of the function f(x) = (x) by observing the equation of the function g(x) = (x)+56.

A: a vertical shift 56 units upwards

B: a horizontal shift 56 units to the left

C: a horizontal shift 56 units to the right

D: a vertical shift 56 units downward

Answers

Answer:

A: a vertical shift 56 units upward I believe

Find the perimeter of the figure. (Will mark brainliest of correct!)

Answers

Answer:

24 inches.

Step-by-step explanation:

Add em' all up cuz.

Answer:

It should be 30 I think

Step-by-step explanation:

I first found the perimeter of the rectangle and then the triangle and added them both together

the ravens scored 1 touchdown and an extra point . how many total points did they score

Answers

the ravens scored 7 points

GIVING BRAINLIEST!!!!!!


32+4X(16 x 1/2)-2

show your work

Answers

Answer:

32x + 30

Step-by-step explanation:

32+4X(16 x 1/2)-2

32 + 4X x 8 -2 ( 16 times 1/2 = 8)

32 + 32x -2      ( 4 times 8 = 32)

32x + 30           ( 32 + -2 = 30)

20+(5 * 2/5)+3

20 + 2 + 3

22 + 3

25

If it is -31°F in one city and in another city it is
83°, what is the temperature difference
between the two cities?

Answers

Answer:

52 degrees apart

Step-by-step explanation:

52 degrees is the correct answer

Consider the function f(x)=15x^2+60x-19
Name the vertex for the function

Answers

The vertex for this function would be (-2,-79)

He is (-2,-79 ok is ❤️ cool

help please I need it in polynomial forms​

Answers

add like terms
9x^2+2x-5
third option

I need answer by 2:25!!!! Please hurry!!!!!

x=-2, y=5, z=3.

X^4-5y+2(x-z)^2.
A. 50.
B. -41.
C.41.
D. 63

Answers

Answer:

C

Step-by-step explanation:

-2^4-5(5)+2(-2-3)^2

16-25+2(25)

16-25+50

41

Mhanifa please help i will mark brainliest :)

Answers

Answer:

AD=11.7 since corresponding side of parallelogram are equal.

BD=8.5 since corresponding side of parallelogram are equal.

Answer:

#1

Opposite sides are congruentAD = BC = 11.7 units

#2

Diagonals bisect each otherBD = BE + DE = 2*DE = 2*7.2 = 14.4 units

there were 7 roses in the vase. Jessica cut some more roses from her flower garden. there are now 15 roses in the vase. how many roses did she cut?

Answers

Answer:

Jessica cut 8 roses.

Step-by-step explanation:

15-7=8

You have to subtract the amount she cut from the flower garden (15) to the amount which the vase had (7), in which you will get an answer of 8.

Functions and Graphing complete each table

Answers

Answer:

table 1: -4,0,4,8. table 2: -3,-1,1,3 table 3: 1/3,0,-1/3,-2/6

Step-by-step explanation:

I GOT A FAKE ANSWER ON THE LAST ONE SO PLEASE HELP FOR REAL NOT FOR THE POINTS
This is your chance to demonstrate your basketball skills! You have been chosen to participate in a paper-ball throwing contest.
Directions:
1. Use the scrap paper to make 10 paper balls per group. (Wad the paper balls up tightly so they are easier to aim.)
2. Place a trash can (or other large container) 5 feet away.
3. Predict how many paper balls you will be able to get into the basket. Type your prediction.
4. Type your results as a fraction.
5. Type your results as a decimal.

Answers

Answer: 3/5 or 0.6

Step-by-step explanation: It would take 2 shots for me to fine tune the force I need to get a perfect shot.  If you divide 3 by 5 you get 0.6.

No links or trolls please. I need help with this math, it’s due soon. Thanks you. It’s a division sign by the way, it’s hard to see in the photo.

Answers

Answer:

n^2p

Step-by-step explanation:

Thats the answer

Math hey guys can somebody please help me out here

Answers

the answer would be C

braineliest ;)

How do I find X and Y

Answers

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(3,5)

Equation Form:

x=3,y=5

Step-by-step explanation:

Help worth 10 points I need the whole area of the shape

Answers

Answer:

1,736km^2

Step-by-step explanation:

Answer:

2,352 km^2

Step-by-step explanation:

So there is a square and 4 triangles.

You first, find the area of the square.

You then get: 35 x 48 = 1,680

Then you need to add the triangles.

Because we have 2 triangles on each side the area formula of a triangle in which is 1/2 times by the base and height can be solved by just B * H.

Doing that you can get: 48 * 7 = 336

Because you have 2 triangles, the final area results in:

1,680 + 336 * 2 = 2,352

A person swims 11 miles downstream in the same time they can swim 7 miles up stream. The speed of the current is 4 miles per hour.
These situations can be represented by the equations
Downstream: t=11/s+4 Upstream:t=7/s-4,
where t stands for time and s is the speed of the swimmer. What is the speed of the swimmer swimming in still water?

Answers

Answer:

s = 18 mph

Step-by-step explanation:

At downstream, time is; t = 11/(s+ 4)

At upstream, time is; t = 7/(s - 4)

Since they both are passed in the same time, then ;

11/(s+ 4) = 7/(s - 4)

Cross Multiply to get;

11(s - 4) = 7(s + 4)

11s - 44 = 7s + 28

11s - 7s = 44 + 28

4s = 72

s = 72/4

s = 18

Complete the system of linear equations so that there are infinitely many solutions.

Y= -3/5x + 2

blank x+ blank y=20
PLEASE HELPPPPPPP WILL GIVE BRAINLIEST

Answers

Answer:

y-intercept:

(0,2) or just -3/5

Step-by-step explanation:

Answer:

3x + 5y = 2

Step-by-step explanation:

y = -3/5 x + 2

multiply both sides by 5

5y = -3x + 2

add 3x to both sides

3x + 5y = 2

note: if it really has to be equal to 20, then multiply both sides by 10, which will result in 30x + 50y = 20

According to market research, a business has a 75% chance of making money in the first 3 years.
According to lab testing, of a certain kind of experimental light bulb will work after 3 years.
According to experts, the likelihood of a car needing major repairs in the first 3 years is 0.7.
Write the scenarios in order of likelihood from least to greatest after three years: the business makes money, the light bulb still works, and the car needs major repairs.
1 car 2 businse 3 lightball
Name another chance experiment that has the same likelihood as one of the scenarios.

plese answer right this is my 3rd time and all i got was like ghty0................................... for answers

Answers

Answer:

There is a 75% chance of sunny skies tomorrow.

Step-by-step explanation:

75% chance is the same likelihood as the business scenario. Hope this helps!

12) Amusement Parks A thrill ride at an amusement park carries riders 160 feet straight up and then releases them for a free fall. The time t in seconds that it takes an object in free fall to reach the ground is t =
[tex] \sqrt{ \frac{d}{16} } [/tex]
where d is the distance in feet that it falls. How long does it take the riders to reach the ground? Give your answer as a radical expression in simplest form. Then estimate the answer to the nearest tenth of a second. ​

Answers

Answer:

sqrt(10)

Step-by-step explanation:

sqrt(160)/16

sqrt(16)sqrt(10)/sqrt(16)

4sqrt(10)/4

sqrt(10)

solve for x. round your answer to the nearest tenth
Trigonometry ​

Answers

Answer:

[tex]\displaystyle x \approx 11.1[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right  

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA[Right Triangles Only] cosθ = adjacent over hypotenuse

Step-by-step explanation:

Step 1: Define

Angle θ = 42°

Adjacent Leg = x

Hypotenuse = 15

Step 2: Solve for x

Substitute in variables [cosine]:                                                                       [tex]\displaystyle cos42^\circ = \frac{x}{15}[/tex][Multiplication Property of Equality] Isolate x:                                               [tex]\displaystyle 15cos42^\circ = x[/tex]Rewrite:                                                                                                            [tex]\displaystyle x = 15cos42^\circ[/tex]Evaluate:                                                                                                          [tex]\displaystyle x = 11.1472[/tex]Round:                                                                                                              [tex]\displaystyle x \approx 11.1[/tex]

Select the best answer 101
2. Which of the following is an example of a proper fraction?
A.7/6
B. 4/3
C.4/4
D.3/4

Answers

A example of a Proper fraction is D =3/4

The figure shown is created by joining two rectangles.
1.25 ft
2.25 ft
3.5 ft
2 ft
3.5 ft
Enter the area, in square feet, of the figure.

Answers

We need to see a picture for this one

what is 3^ 81^5=3^ please

Answers

Answer:

             

Step-by-step explanation:

             

Simplify. 9 - 5x + 8 - 4x

Answers

Answer:

− 9 + 1 7

Step-by-step explanation:

Hope this helps!

What is the surface area of the cylinder with height 4 mi and radius 3 mi? Round your answer to the nearest thousandth.

Answers

Answer:

The surface area of the cylinder will be "131.88".

Step-by-step explanation:

The given values are:

Height of cylinder,

h = 4 m

Radius of cylinder,

r = 3 m

As we know,

The surface are of cylinder is:

⇒  [tex]A_s=2 \pi r(h+r)[/tex]

On substituting the values, we get

⇒       [tex]=2\times 3.14\times 3(4+3)[/tex]

⇒       [tex]=18.84\times 7[/tex]

⇒       [tex]=131.88[/tex]

Ann​'s car can go 204 miles on 6 gallons of gas. During a drive last​ weekend, Ann used 7 gallons of gas. How far did she ​drive? Use pencil and paper. Explain how the problem changes if you were given the distance Ann drove last weekend instead of how much gas she used.

Answers

Given :

Writing lan's car can go 204 miles on 6 gallons of gas.

During a drive last weekend, lan used

7 gallons of gas.

To find :-

How far did he drive?

Solution :-

According to Question ,

Car can go 204 mi on 6 gallons of gas.

Using Unitary Method ,

On 1 gallon of gas it will go 204/6 mi

On 7 , it will go 204/6*7 =238 miles

Hence the required answer is 238 miles.

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