A bag contains marbles. Some are blue and the rest are red. There are 3 blue marbles for every red marble. How many blue marbles are in the bag?​

Answer:

Anna has $1460

Betty has $1060                                                      

Step-by-step explanation:

let Anna's money be x

and Betty's money be y

If Anna gave Betty $200, then they would have the same amount of money

Anna's money will reduce by 200

x=x-200

Betty's money will increase by 200

y= y+200

if they have the same amount of money, the difference will be zero

x-200=y+200

x-200-y-200=0

x-y-400=0

x-y=400--------------1

this means that Anna has $400 more than Betty

if Betty gave Anna $220, Anna would then have twice as much as Betty.

Betty's money will reduce by 220

y=y-220

Anna's money will increase by 220

x=x+220

Anna's money will double that of Betty's

x+220=2(y-220)

x+220= 2y-440

x=2y-440-220

x=2y-660--------------------2

put x= 2y-660 in eqn 1

(2y-660)-y=400-------------------------1

2y-y=400+660

y= 1060

so Betty has $1060

put y= 1060 in eqn 1

x-y=400

x-1060=400

x=400+1060

x=1460

so Anna has $1460

Answer:

Yes

Step-by-step explanation:

i believe they are all yes.

Answer:

3x

Step-by-step explanation:

x+x+x

=3x

if i am wrong than sorry

Answer:

28

Step-by-step explanation:

what you do is add 39 plus 74

that answer will give you 113 so then you subtract 180 from that

then you get 67, then what you do is subtract 39 and you would get 28

x = 28

Answer:

all the sides are the same so it would be 5

Step-by-step explanation:

[tex]average = \frac{sum \: \: of \: \:all \: \: obeservations}{no. \: \: of \: observaions} [/tex]

[tex] = \frac{1205 + 1450 + 1530 + 1655 + 1610 + 1710}{6} [/tex]

[tex] = \frac{9160}{6} [/tex]

[tex] = 1526.66[/tex]

___________________________________________

1526.66 is the average of his sales for this period.

Answer:

i dont know sorry

Step-by-step explanation:

i  dont understand i just watch anime all day

Answer:

Free points? idek sorry.

Step-by-step explanation:

Answer:

129.32

Step-by-step explanation:

You multiply 6.8 by both values in the parenthesis and then subtract that number and lastly, take that value and add it to 33.1 which equals 129.32

129.32 hope this helps.

Answer:

0.25 or 1/4

Step-by-step explanation:

easy - 3250 pounds divided by 13000 students

everyone will get 0.25 or 1/4 of a pound of chicken

hope this helps!!

Have a nice day!

Answer:

Step-by-step explanation:

-x=18-6

-x=12

x=-12

Answer:

y = 0.6x – 4  

or

y =   3/5x -4

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

a.

Step-by-step explanation:

Answer:

No one can answer unless you include the money per hour or day or week

Step-by-step explanation:

Answer:

well she works 5 days since it says monday through friday so 5 x 6 =30 she works 30 hours a week but you didnt out how much she early for each hour or one day so thats all you can figure out

Step-by-step explanation:

Answer:

(-2, -8)

x = -2

y = -8

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define systems

13x - 6y = 22

x = y + 6

Step 2: Solve for y

Substitution

Step 3: Solve for x

Answer:

2 1/2 meters

Step-by-step explanation:

Amita's kitchen is rectangular with an area of 3 3 /4 square meters. The width of the kitchen is 1 1/ 2 meters. What is the length, in meters, of Amita's kitchen?

The formula for the area of a rectangle = Length × Width.

To find the length our formula becomes : Area/Width

In the question,

Area = 3 3/4 m²

Width = 1 1/2 m

Length of the rectangular kitchen

= 3 3/4 m² ÷ 1 1/2 m

= 15/4 m² ÷ 3/2 m

= 15/4 m² × 2/3 m

= 5/2 m

= 2 1/2 m

The length of the rectangular kitchen is 2 1/2 meters

Answer:

In geometry, an angle can be defined as the figure formed by two rays meeting at a common end point. An angle is represented by the symbol ∠. ... Angles are measured in degrees, using a protractor.

Step-by-step explanation:

Answer:

[tex]Total\ Cost = \$3000[/tex]

Step-by-step explanation:

Given

[tex]Individuals = 5[/tex]

[tex]Cost = \$600[/tex] --- per individual

Required

Determine the total costs

Since each individual brings the same amount.

The total cost is calculated as follows:

[tex]Total\ Cost = Cost * Individuals[/tex]

[tex]Total\ Cost = \$600 * 5[/tex]

[tex]Total\ Cost = \$3000[/tex]

Answer:8.76712328...%

Step-by-step explanation:

1.Find the increase in students. 397-365=32

2. Take the ratio and put it into percent. 32/365=x/100

3. Cross multiply. 32 x 100=365x

4.Solve. X=8.76712328...%

It is repeating forever like this.

8.767123287671232876712328

yes there is a a correlation

f(x) = 4x + 60

slope = 4

y-intercept = 60

There is a correlation between the number of hours spent on studies and the score on music test.

As we increase the 0.5 hour on studying, then the music score increases by 2. The function which best fits the data for the correlation is y=60 + 4x

The slope and y-intercept of the plot indicate? that Y= score obtained in music test and X=number of hours spent on studying. The slope of the above equation represent the rate of increase in music score with respect to an increase in the number of hours spent on studying.

The y-intercept gives the music score when the number of hours spent on studying is zero.

Learn more about correlation on:

https://brainly.com/question/4219149

#SPJ2

Answer:

Answer in photo

Step-by-step explanation:

Answer:

I think its 5 feet

Step-by-step explanation:

I used Pythagorean theorem

Answer:

C

Step-by-step explanation:

Answer:

(b)

Step-by-step explanation:

Answer:

369

Step-by-step explanation:

28% 0f 288=80.64

228lbs sold + 80.64(Round off)  =81 = spoiled =369

Answer:

To know what the ratio for the cos of theta, we actually have to see the adjacent and hypotenuse values. cos=adjacent/hypotenuse.

Step-by-step explanation:

Answer:

2.3

Step-by-step explanation:

Answer:

C=CD N=RS

Step-by-step explanation:

Answer:

16/625

Step-by-step explanation:

Step one:

sample space

A bag contains

5 cherry,

8 orange,

2 grape,

7 bubblegum, and

3 apple  lollipops.

sample size= 5+8+2+7+3= 25

Required:

The probability of choosing grape for your first lollipop

and orange for your second?

1. The probability of choosing the grapes lollipops

=2/25

2. the probability of choosing the orange  lollipops----Note in the second choice the sample size will reduce because the first choice was done with out a replacement

=8/24

The total is

2/25*8/25= 16/625