A bag contains 3 red cubes, 4 yellow cubes, and 3 green cubes. You choose a cube without looking, note its color, and put the cube back in the bag. Suppose you do this a total of 80 times. About how many times would you expect to choose a red or yellow cube?

Answers

Answer 1

Answer:

is it multiple choice that would help

Step-by-step explanation:

Answer 2

Answer:

56 times

Step-by-step explanation:

Total cubes:

3 + 4 + 3 = 10

Number of yellow or red:

3 + 4 = 7

Probability of yellow or red:

7/10

Same probability 80 times:

80*7/10 = 56

Expected number is 56


Related Questions

8 1/5-2 7/8 Fractions math

Answers

Answer:

5  13 /40

Step-by-step explanation:

hope this helps :))

Sunita is buying some fabric. The total yardage of the fabrics is about 13 yards. Which sum is about 13?

Answers

Answer:

13*3=39ft (if thats what ur looking for)

Step-by-step explanation:

Explain answer !!

( WILL GIVE BRAINLEST)

Answers

Answer:

B

Step-by-step explanation:

Cross product.

3xy= 3y

4x6= 24

3y/3

24/3= 8

Answer is b because you multiply times 2 on the fraction on the left

Explain your answer !

( WILL GIVE BRAINLST)

Answers

Answer:

Its A

Step-by-step explanation:

find all possible values of x if these represent side of a triangle 2x,5-x,4

Answers

Answer:

-1/3 < x < 3 or x = (-1/3, 3)

Step-by-step explanation:

Given sides of a triangle:

2x, 5 - x, 4

Triangle inequality theorem:

Any side is smaller than the some of the other two.

Apply to the given triangle:

2x + 5 - x > 4 ⇒ x > -12x + 4 > 5 - x ⇒ 3x > -1 ⇒ x > -1/35 - x + 4 > 2x ⇒ 3x < 9 ⇒ x < 3

Combine all the inequalities:

-1/3 < x < 3x = (-1/3, 3)

complete the exponent chart

Answers

I'll do the first 6 rows to get you started.

===========================================

In row 1, we have the number [tex]2^3[/tex] which is the same as writing 2^3

The base is 2 and the exponent is 3. Think of "base" as in "basement" to remember that the base is under the exponent. The exponent tells us how many copies of the base to multiply out. In this case, we have three copies of the base "2" multiplied to get 2*2*2 = 8

============================================

In row 2, we have the number 3^2. The base is 3 and the exponent is 2.

We can say 3^2 = 3*3 = 9. We have two copies of the base multiplied. Think of a 3 inch by 3 inch square that has area of 9 square inches.

============================================

Row 3:

The number 5^4 means 5^4 = 5*5*5*5 = (5*5)*(5*5) = 25*25 = 625

The base is 5 and the exponent 4 tells us how many copies of the base to multiply.

============================================

Row 4:

We aren't given the number like in the earlier rows. But we can see that the base is 6 and the exponent is 2. So the number to fill in that first blank is 6^2

The expanded notation would be 6*6 because the exponent tells us how many copies of the base to multiply out.

The standard notation is 36 because 6*6 = 36.

============================================

Row 5:

This time we don't have an exponent, but we have the base and we have the expanded notation.

The expanded notation of 8*8*8 means the base is 8 and the exponent is 3

So 8^3 = 8*8*8 = 512

We'll have 8^3 to fill in the first blank of row five, 3 fill in the next blank, and finally 512 fill in the last blank.

============================================

Row 6:

We have six copies of '9' multiplied together

This tells us we have the number 9^6. The base is 9 and the exponent is 6

Use your calculator to determine that 9^6 = 9*9*9*9*9*9 = 531441

============================================

I'll let you do the rest of the remaining rows.

Please Answer 1 and 2. Giving a lot of points!

Answers

Answer:

Option B871.5 feet

Step-by-step explanation:

Q1

∠PTQ + ∠QTS = ∠PTS, angle addition postulate

∠PTS is a straight line, therefore equals to 180°

Correct choice is:

B. The angles add to 180°

Q2

1 inch → 83 feet ⇒10.5 inches → 10.5*83 feet = 871.5 feet

HOWDY;)

1.Option B

2.871.5 feet

Q 1

PTQ + QTS =PTS,angle addition postulate

PTS is a straight line,therefore equals to 180°

Correct choce is:

B angles add to 180

Q2

1 inch > 83 feet >

10.5 inches > 10.5*83 feet = 871.5 feet

(97 - 16) (3x + 11) (7x - 5)​

Answers

Answer:

1701x^2+5022x−4455

Step-by-step explanation:

what is x + 10 - (2x +5)

Answers

Answer:

−x+5

Step-by-step explanation:

Answer:

-x + 5

Step-by-step explanation:

-2x + x = -x

10 -5 = 5

In a certain town in 90 minutes 1/2 inch of rain falls continues at the same rate for a total of 24 hours which of the following statements are true about the amount of rain in the 24 hour.

Answers

Answer:

A. 16 times of 1/2 inch of rain

Step-by-step explanation:

24 hours = 1440 minutes

90 minutes = 1/2 inch of rain

1440 divided by 90 = 16

16 times of 1/2 inch of rain

Find the midpoint of the segment with the following endpoints.
(8, 7) { and } (4, 3)

Answers

Answer:

(6, 5)

Step-by-step explanation:

midpoint ={ (8+4)/2, (7+3)/2}

(12/2, 10/2) = (6,5)

HELP PLEASE
Gina has saved $385 for music lessons. She plans to spend $35 per month 5 points
on lessons. This can be represented by the equation y = 385-35x where y
is the amount of money she has left and x is the number of months she
has been taking music lessons. What is the x-intercept? What does the x-
intercept of this function mean in the context of this situation?

Answers

Answer:

11, the amount of time it'll take for her to run out of money for music lessons

Step-by-step explanation:

THe x intercept is where y=0

to solve this we can just plug in 0 for y and solve for x

we have

0= 385-35x

35x=385

x=11

Answer:

x- intercept is when y = 0

y = 385 - 35x0 = 385 - 35x35x = 385x = 385/35x = 11

This is the point (11, 0), this is the indication that after 11 months Gina will have spent all money saved.

what is 8.45 rounded to the nearest tenth? A 8.0 B 8.4 C 8.5 or D 9.5

Answers

Answer:

C

Step-by-step explanation:

Since its a 5, you round up. if it is 5 or above, you round the number upwards, when 4 or below, is downwards.

Answer:

C.8.5

Step-by-step explanation:

There are 38 students in Mr. Reynolds math class and 20 are boys.If a student is selected at random what is the probability that a girl is selected?Give the answer as a fraction in simplest form.

Answers

Answer:

9/19

Step-by-step explanation:

if 20 students are boys, then the remaining students are girls. 38-20 = 18

There are 18 girl students.

18/38 can be simplified to 9/19

Answer:

9/20

Step-by-step explanation:

Find x. (The picture has the info)

Answers

Answer:

X=5

Step-by-step explanation:

3x+9 is twice of 12 (24). 24-9=15, and 3*5=15, so x=5.

Identify the domain, range and x-intercept of the function below.

Answers

domain is the x values it spans across. look at the graph, and see if you can tell what that is.

range: the y values it spans across^

x-intercept: where does it hit the x axis? (hint: it intersects at 2 different points)

Write two decimals with a product close to 6.3

Answers

Product close to 6.3= 5.3


SOLUTION: The sum of two decimal numbers is 5.3. Their difference is 1.7, and their product is 6.3. what are the two numbers

Two decimals with a product close to 6.3 are, 2.5 and 2.52

What is Multiplication?

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

To find Two decimals with a product close to 6.3.

Now, Let one decimal number is, 2.5

Hence, Second number is,

⇒ 6.3 / 2.5

⇒ 2.52

Hence, Two decimals with a product close to 6.3 are, 2.5 and 2.52

Learn more about the multiplication visit:

https://brainly.com/question/10873737

#SPJ3

What value of x will make the equation below true?
8x=4x+16

Answers

Answer:

x=-2

Step-by-step explanation:

ANSWER:

x=4

EXPLANATION:

8x= 4x+16

subtract 4x on both sides

4x=16

divide by 4 on both sides

x=4

Determine whether each pair of figures is similar. If so, write the similarity statement and scale factor. If not, explain why. Number 1 and 2 on the second part.

Answers

9514 1404 393

Answer:

JKLM ~ QRSP, scale factor 0.6ΔABC ~ ΔUVT, scale factor 1.5

Step-by-step explanation:

We can write the similarity statements by naming vertices in order of increasing numbers of arcs, starting with the one having a single arc. Then we can express the side lengths as a reduced ratio, in the same order.

1. JKLM ~ QRSP

  JK : KL : LM : MJ = 20 : 15 : 24 : 25

  QR : RS : SP : PQ = 12 : 9 : 14.4 : 15 = 20 : 15 : 24 : 25 (same ratios)

The scale factor is 12/20 = 0.6.

__

2. ΔABC ~ ΔUVT

  AB : BC : CA = 16 : 14 : 12 = 8 : 7 : 6

  UV : VT : TU = 24 : 21 : 18 = 8 : 7 : 6 (same ratios)

The scale factor is 24/16 = 1.5.

There are 80 balloons used
to make 20 identical gift
baskets. What is the unit
rate in balloons per gift
baskets?

Answers

Answer:

4 gallons per gift basket

Step-by-step explanation:

20 x 4 = 80

I WILL MARK U BRAINLIEST 5TH GRADE MATH PLEASE! HEPL!!!!

Answers

Answer:

volume of contaber= 4*4*5

=80cm cube

volume of box=4*2*1

=8cm cube

she can pack box in contaner= volume of continer/ volume of box

=80/8

=10 box

Answer:

10

Step-by-step explanation:

I need help with solving systems of linear equations through elimination.
1.) 8x = 3y + 38
24= 6y + 9x
a. all real numbers
b. (4,-2)
c. (4,-4)
d. (6,3)
2.) 6 = 2x + y
7x = 3 - 3y
a. (15,-36)
b. (-5,6)
c. (0,0)
d. (-15,36)
3.) 11x = 5 + 10y
7y = -2x +45
a. (-5,10)
b. (5,5)
c. (14, -4)
d. No solution

Answers

Answer:

See explanation

Step-by-step explanation:

8x = 3y + 38  

24= 6y + 9x  

Rearrange;

3y - 8x = -38       * 2     -------(1)

6y + 9x = 24       * 1       -------(2)

6y - 16x = -76    -------(3)

6y + 9y  = 24    -------(4)

Subtract (4) from (3)

     -25y = -100

      y= 100/25

     y = 4

Substitute y =4 into(1)

3y - 8x = -38    

3(4) - 8x = -38

12 -8x = -38

-8x = -38 - 12

x = 50/8 = 6 2/8

2) 6 = 2x + y

7x = 3 - 3y

Rearrange;

2x + y = 6            * 3    --------(1)

7x + 3y = -3         * 1     --------(2)

6x + 3y = 18        ---------(3)

7x  + 3y = -3        ---------(4)

Subtract (4) from (3)

-x   = 21

x = -21

Substitute x = -21 into (1)

2x + y = 6

2(-21) + y = 6

-42 + y = 6

y = 6 + 42

y = 48

3)  

11x = 5 + 10y

7y = -2x +45

Rearrange

11x - 10y = 5          * 2  ---------(1)

2x + 7y   = 45       * 11  ---------(2)

22x - 20y = 10     --------(3)

22x + 77y = 495  --------(4)

Subtract (4) from (3)

       -97y  = -485

          y =  5

Substitute y =5 into (1)

11x - 10y = 5  

11x - 10(5) = 5

11x - 50 = 5

11x = 5 + 50

11x = 55

x = 55/11

x = 5

12 x 25 + 2-10 what’s is the answer bishesss

Answers

Answer:

292

Step-by-step explanation:

Answer:

292

Step-by-step explanation:

12X25=300

300+2=302

302-10=292

PEMDAS

also used calculator

look it up on internet

Is a+b+0=0+a+b commutative property of addition?

Answers

Yes, the commutative property of addition states that no matter what the order is the sum will always stay the same.

?????????????????????????

Answers

The answer would be the second one

Write an equation in standard form that has a slope of - and a y-intercept of -2.
Y +
Review progress
Question 2
of 12

Answers

Answer:

y= 3x-2

Step-by-step explanation:

standard form

y= mx + c

 c represents y intercept

m represents slope or gradient

y= 3x-2

The slope is 3 and the y intercept in -2

What does modal,median and mean, mean

Answers

Answer:

Mode is the number that occurs the most in the data

the median is when you line up all the numbers in order and the median is the middle one

mean is the average: add all the numbers in the data together and then divide it by the amount of numbers

D 5/3



Couldn’t fit in pic

Answers

Answer:

B

Step-by-step explanation:

You can just move upper y equation and it will be:

6x+3(3x-5)=15

6x+9x-15=15

15x-15=15

15x=30

x=2

Answer:

Try the website, MATH

WAY

type in your equations

Three friends have their own cell phones, Brian has 4 more application programs on his phone than Henry has on his. Wes has two times
more programs on his phone than Brian has on his
Part A
Let x represent the number of application programs Henry has. Write an algebraic expression that represents the number of application
programs on each friend's cell phone.

Answers

Answer:

Step-by-step explanation:

What is the value of the expression 3x+9 if x=6

Answers

Answer:

27

Step-by-step explanation:

3(6)=18

18+9=27

Answer:

27

Step-by-step explanation:

You would use PEMDAS to solve this equation, P (parenthesis) E (exponates)  M (multiply) D (divide) A (add) S (subtract). The way you use this is by following the steps in the order that you would spell PEMDAS, so 3x+9 would be 3•6+9. So look at the equation 3•6+9, so what would we use first? do we have parenthesis? No, Do we have exponents? No, Do we have multiplication?  Yes, so multiply 3 and 6 = 18. Now the equation will look like this 18+9 = 27.

Hope this helps!

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