Mathematics Middle School

From a barrel of colored marbles , you randomly select 5 blue , 2 yellow , 3 red , 4 green , and 2 purple marbles. Find the expreimetal probability of randomly selecting a marble that is NOT yellow .

1. 9 / 16
2. 7 / 8
3. 8 / 9
4. 3 / 4

Answers

Answer 1
I think it's 7/8 because there's 16 marbles and 14 aren't blue so you have a 14/16 chance of not getting a yellow marble which simplifies to 7/8
Answer 2

Answer:

4/5

Step-by-step explanation:

From your experiment of drawing 20 marbles you now have a proportion of non-yellow marbles to total marbles and from that you can come up with an experimental probability that you'll draw a non-yellow marble.  

P(not yellow) = 16/20  

But that can be reduced by dividing top and bottom by 4:  


Related Questions

ΔABC and ΔXYZ are similar triangles. If BA = x + 9, AC = x + 7, YX = x + 5, and XZ = x + 4, find the value of x.

Answers

Solution:

we are given that ΔABC and ΔXYZ are similar triangles.

As we know , when two triangles are similar then the ratios of their corrsponding sides are equal.

Here we have

BA = x + 9, AC = x + 7, YX = x + 5, and XZ = x + 4

So we can write

[tex] \frac{x+9}{x+5}= \frac{x+7}{x+4}\\ \\ (x+9)(x+4)=(x+7)(x+5)\\ \\ x^2+13x+36=x^2+12x+35\\ \\ 13x-12x=35-36\\ \\ x=-1\\ \\  [/tex]

Hence then value of x=-1.

Answer:

-1

Step-by-step explanation:


A license plate comprised of 3 letters followed by 3 numbers is to be chosen (repetition is allowed). If the first letter cannot be a "Z", how many different ways can this occur? In your answer, include the set up and calculations for the license plate. Complete your work in the space provided or upload a file that can display math symbols if your work requires it.

Answers

Because there are 26 Letters, there are 25 possibilities for the first letter, and 10 choices for the numbers, so:
25*26*26*10*10*10
Multiply:
650*26*1000
16900*1000
There are 16,900,000 possibilities

Please help ASAP! And please show steps or explain!

Answers

first put 3 out of the way then divide 100 by 16.666666 then you should get around 3 1/6
There is one repeating digit, so we effectively multiply and divide by 10^1 -1 = 9. (The exponent of 10 here is the number of repeating digits.)

[tex]10 \times 3.1\overline{6} - 3.1\overline{6} = 31.6\overline{6} -3.1\overline{6} = 28.5 = 9 \times 3.1\overline{6}[/tex]

Then you have
[tex]3.1\overline{6} = \dfrac{28.5}{9} = \dfrac{285}{90} = \dfrac{19}{6}[/tex]

The equivalent fraction is 19/6.

what is the solution to the linear equation? 2.8y+6+0.2y=5y-14

Answers

2.8y+6+0.2y=5y-14
Combine like terms
3y+6=5y-14
Subtract 6 from both sides
3y=5y-20
Subtract 5y from both sides
-2y=-20
Divide both sides by -2

Y=10

Answer:

Step-by-step explanation:

D)10

10. Write an inverse variation to model the situation and answer the question. Two rectangular fields have the same area. One measures 75 yd by 60 yd. If the other has a length of 72 yd, what is its width?. show your work.

Answers

Answer:
equation is: width = area / length
width = 62.5 yd

Explanation:
For the first rectangle:
We have:
length = 75 yd and width = 60 yd
Therefore:
area = length * width 
area = 75 * 60
area = 4500 yd²

For the second rectangle:
We have:
area = area of first rectangle = 4500 yd²
length = 72 yd
area = length * width
width = area / length ............> The required equation
width = 4500 / 72
width = 62.5 yd

Hope this helps :)

The vertices of a triangle are A(4,5), B(7,1), and (9,6). After reflecting over the line x = 5, what are the new coordinates? A) A'(5,6), B'(1,3), C'(6,1) B) A'(6,5), B'(3,1), C'(1,6) C) A'(5,5), B'(5,1), C'(5,6) D) A'(5,4), B'(5,7), C'(5,6)

Answers

the answer is B i just did it

Answer:

The answer is B.

Step-by-step explanation:

I took the benchmark too.

if you invest $100 a month into a retirement account paying 6% interest compounded monthly, how much will you have after 35 years?

Answers

Here's the equation for one year:
0.06(100) + 100
But because it is 35 years:
35(0.06(100)) + 100
2.1(100) + 100
We can make it simpler:
3.1(100)
310
You will have $310

The sine of 37 degrees is equal to the cosine of what angle

Answers

We have sin37 = sin(90 - 53) = cos53;

Answer:

53

Step-by-step explanation:

The sine and cosine have to be equal to 90 degrees.

All of the following are equal except
a)-|5|
b)-|-5|
c)|-5|
d) the opposite of 5

Answers

I’m pretty sure the answer is C
The answer is C. Having a value inside the absolute value bars will make the number positive (|-14| = 14, |6| = 6), but it doesn’t affect the operations outside of it. A,B, and D are all -5, while C is 5.

556 multiplied by 34

Answers

556 x 34 = 18,904
Mark brainliest if this helped :D
The answer to 556 * 34 is 18,904.

The lowest altitude of an altocumulus cloud is about 3 8 feet. The highest altitude of an altocumulus cloud is about 3 times the lowest altitude. What is the highest altitude of an altocumulus cloud? Write your answer as a power

Answers

[tex]3(3^8)[/tex] equals [tex]9^8[/tex] feet. hope this helps 

It is given The lowest altitude of an alto cumulus cloud is about  [tex]3^{8}[/tex] feet.The highest altitude of an alto cumulus cloud is about 3 times the lowest altitude . The question is asking us to find the highest altitude of an alto cumulus cloud.

The the highest altitude of an alto cumulus cloud = [tex]3 .(3^{2}) =3^{1+2}=3^{9}.feet.[/tex].

It is given The lowest altitude of an alto cumulus cloud is about  [tex]3^{8}[/tex] feet.The highest altitude of an alto cumulus cloud is about 3 times the lowest altitude . The question is asking us to find the highest altitude of an alto cumulus cloud.

The the highest altitude of an alto cumulus cloud = [tex]3 .(3^{2}) =3^{1+2}=3^{9}.feet.[/tex].

7r. r represents a fraction which value of r makes the expression equal a number less than 7? 4/4 or 4/3 or 4/5 or 4/1

Answers

Multiply 7 by each of the fractions to find the solution that is less than 7


= 7 * 4/4
= (7*4)/4
= 28/4
= 7

= 7 * 4/3
= (7*4)/3
= 28/3
= 9 1/3

= 7 * 4/5
= (7*4)/5
= 28/5
= 5 3/5

= 7 * 4/1
= (7*4)/1
= 28/1
= 28


ANSWER: The fraction that gives a solution less than 7 is 4/5. 4/5 multiplied by 7 is 5 3/5.

Hope this helps!  :)

The value of r that makes the expression 7r less than 7 is 4/5, as multiplying 7 by 4/5 results in 5.6, which is less than 7.

The question asks which value of r makes the expression 7r equal a number less than 7, given the choices of 4/4, 4/3, 4/5, or 4/1. To find the solution, we simply multiply 7 by each fraction option and see which results in a number less than 7.

For 4/4 (or 1): 7 * 1 = 7For 4/3: 7 * (4/3) > 7For 4/5: 7 * (4/5) = 5.6, which is less than 7For 4/1 (or 4): 7 * 4 > 7

Thus, the value of r that makes the expression 7r result in a number less than 7 is 4/5.

which is a value of x, when 3x²+4=40

Answers

3x^2+4=40 
3x^2=36
x^2=12
x=+or-sqrt(12)

:)
Hey there! 

Let's solve the equation step by step!
[tex]3 x^{2} + 4 = 40[/tex]

Subtract 4 from both sides.
[tex]3 x^{2} = 36[/tex]

Divide both sides by 3.
[tex] x^{2} = 12[/tex]

Solve the equation by taking the positive and negative root of 12.
[tex]x = \sqrt{12} = 2 \sqrt{3} = 3.46... \\or\\ x = - \sqrt{12} = -2 \sqrt{3} =3.46...[/tex]

The exact answer includes the roots, the other answer is the answer in two decimals. 
~Hope this helps you!

Kim spent $26 on a magazine and 6 notepads have the magazines cost $2 then how much was each Notepad

Answers

The answer is $4 per notepad.
First you subtract the $2 from the total of $26 to get $24 for all the Notepads together, then you divide the $24 by the number of notepads. 24 divided by 6 equals 4. So each notepad cost $4.

a trapezoid with an area of 166.75 in has bases that measure 21 in and 8 in find the height of the trapezoid

Answers

The usual equation for a trapezoid is base1+base2/2 * height. For this, 21+8/2 equals to 166.75. Use division, and your height is 11.5

The area of trapezoid is calculated as -

Area of trapezoid = [tex] \frac{a + b}{2} X height [/tex]

Here, a = base 1

b = base 2

Height is the height of trapezoid.

It is given that,

Area of trapezoid = 166.75 in

Base 1, a = 21 in

Base 2, b = 8 in

Area of trapezoid = [tex] \frac{a + b}{2} X height [/tex]

166.75 in = [tex] \frac{21 in + 8 in}{2} X height [/tex]

Height = [tex] \frac{ 166.75 in}{14.5}

Height = 11.5 in

Thus, height of trapezoid = 11.5 In

how do you do application of linear equations

Answers

You can use linear equations if something is being raised or decreased with the same linear function. Such as temperature or the amount of books that get sold.

Isabella and Mateo each collect beautifully polished rocks. The weights, in ounces, of their rocks are listed below.



Which statistical measure could be used to support the claim that Mateo’s rocks generally weigh more than Isabella’s rocks?

Question 7 options:

A) mean


B) median


C) mode


D) range

Answers

In order to answer this question we have to find all the 4 measure, Mean, Median, Mode and Range of both data sets.

1) For the Rocks of Isabella:

Mean = (Sum of all numbers)/Total numbers
So, Mean weight of Isabella's Rocks = 7.64 

Median is the central value. 
So, Median weight of Isabella's Rocks = 6

Mode is the most frequently occurring value.
So, Mode weight of Isabella's Rocks = 8.75

Range = Maximum - Minimum
So, Range weight of Isabella's rocks = 13.75

2) For Mateo's Rocks:

Mean = 8
Median = 6
Mode = 8
Range = 14.75

From the above data, we can see that the Range of Mateo's Rocks is more as compared to the Isabella's Rocks.

Thus, Range can be used be used to support the claim that Mateo’s rocks generally weigh more than Isabella’s rocks.

So option D is the correct option

Which is not a factor of 56? A. 4 B. 8 C. 14 D. 26

Answers

Divide each by 56. If you get a number with a decimal that’s your answer
26 is not a factor of 56

The circumference of a circle is approximately 37.7 centimeters. Enter the radius of the circle, in centimeters. Round your answer to the nearest whole number.

Answers

37.7 = 2 x pi x r
18.85 = pi x r
r = 18.85/pi
or 
r = 6

Hope this helps

The circumference of the circle is given as 2[tex] \pi [/tex]r where [tex] \pi [/tex] is a constant whose value is equal to 22/7 and r is the radius of the circle

From the given problem, we have the circumference =37.7

2[tex] \pi [/tex]r = 37.7

2*22/7*r = 37.7

r = 37.7*7/(22*2)

r = 263.9/44

r = 5.99

r = 6cm

Radius = 6 centimeters (Rounded to nearest whole number)


Which equation has no solution?

4(x + 3) + 2x = 6(x + 2)
5 + 2(3 + 2x) = x + 3(x + 1)
5(x + 3) + x = 4(x + 3) + 3
4 + 6(2 + x) = 2(3x + 8)

Answers

Answer:

5+ 2(3+2x) = x + 3(x+1) or B

Step-by-step explanation:

correct on edge 2021

The Equation have No solution is 4(x + 3) + 2x = 6(x + 2).

What is Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

First, 4(x + 3) + 2x = 6(x + 2)

4x + 12 + 2x = 6x + 12

6x + 12 = 6x+ 12

0 = 0

Thus, the equation have No solution.

Second, 5 + 2(3 + 2x) = x + 3(x + 1)

5 + 6 + 6x = x + 3x + 1

6x+ 11 = 4x+ 1

2x = -10

x= -5

Thus, the equation have one solution.

Third, 5(x + 3) + x = 4(x + 3) + 3

5x+ 15 +x = 4x + 12 + 3

6x +15 = 4x + 15

2x = 0

x= 0

Thus, the equation have one solution.

Learn more about equation here:

https://brainly.com/question/29657983

#SPJ7

Explain why 0.77 > 0.077

Answers

0.77>0.077 because when you move over in hundredths place to the right in decimals, the value of the number decreases.
the value of 0.77 is greater than 0.077 because 0.77 is closer to one.

If a customer wants to cover an area 20ft wide by 57ft long with rock, how many square feet does he have to cover?

Answers

he will need to cover 1,140 square feet because 20 x 57 = 1,140

the formula for finding the area of a triangle is a equals 1/2 x base height a triangle has height 12 in an area of 54 in squared what is the length of its base

Answers

How to Set Up:
54=1/2 x b x 12
54 =6b
54/6
9=b

kendra flips a coin 3 times what is the probability that she flips tails all 3 times

Answers

If Kendra were to flip the coin only once, she'd have a fifty fifty chance (1/2). Two times for tails would be (1/2) again, since (1/4+1/4=1/2). Now, three times would be (1/6+1/6+1/6). This equals (1/2), so she remains at a 50% chance of flipping the coin three times.

To find the probability of flipping tails all three times, we need to consider that each flip of a fair coin has a probability of 0.5 of landing on tails.

Since the coin flips are independent events (the outcome of one flip doesn't affect the outcome of another flip), we can simply multiply the probability of each individual flip.

So, the probability of flipping tails three times in a row is:

P(Tails, Tails, Tails) = P(Tails) × P(Tails) × P(Tails)

P(Tails, Tails, Tails)  = 0.5 × 0.5 × 0.5

P(Tails, Tails, Tails) = 0.5³

P(Tails, Tails, Tails) = 0.125

So, the probability that Kendra flips tails all three times is 0.125 or18.

The probability of flipping tails on a fair coin is 0.5 (or 1/2) since there are two equally likely outcomes, heads or tails. When flipping a coin three times, each flip is independent, meaning the outcome of one flip doesn't affect the outcome of another.

To find the probability of flipping tails all three times, we multiply the probability of each individual flip.

So, 0.5 (tails on the first flip) times 0.5 (tails on the second flip) times 0.5 (tails on the third flip) equals 0.5³ = 0.125.

Therefore, the probability that Kendra flips tails all three times is 0.125 or 1/8.

Complete Question:

Kendra flips a coin 3 times what is the probability that she flips tails all 3 times.

Can someone answer a b and c. Will mark brainliest!!!!

Answers

b= max $8.17 min=$8.05
c=$9.05

Numerical Expressions -I need help to understand how to complete this example . Any help would be appreciated.

Answers

Basketball   16+2=18    (2*8)+2

Baseball    40-5=36    (5*8)-4

Softball 18+6=24 ( (5*8)-4)/2  +6

8+18+36+24=86

the ratio of boy to girls in 8th grade is 5 to 3 ,how many girls are there in 8th grade if there are 80 students in 8th grade

Answers

boys      5
------- = ---    Note that 5+3 = 8.  Thus, (5/8) of the 80 students are boys and 
girls       3     (3/8) of the 80 students are girls.  This comes out to 30 girls (and                         50 boys)  Note that 30+50=80 (students)

. Thus, the number of girls =30.

Let's denote the number of boys as 5x and the number of girls as 3x. According to the problem, the total number of students is the sum of both boys and girls:

5x + 3x = 80

Combining the terms, we get:

8x = 80

Now, solving for x:

x = 80 / 8

x = 10

Now that we know the value of x, we can find the number of girls:

Number of girls = 3x = 3 * 10 = 30

Therefore, there are 30 girls in the 8th grade.

genna painted a table top that is shaped like a circle . the circumferance of the tabletop is 6 feet which measurement is closest to the area of the tabletop in square feet?

Answers

To solve this problem you must apply the proccedure shown below:

 1. You must apply the formula for calculate the area of a circle, which is:

 A=πr^2

 Where A is the area of the circle and r is the radius of the circle.

 2. You have that the diameter is 6 feet, then the radius is:

 r=D/2
 r=3 feet

 3. When you apply the formula shown above, you obtain:

 A=9π feet^2
 A=28.27 feet^2

 The answer is: 28.27 feet^2
circumference  = 6 ft

circumference = 2*pi*r = 6
 
solve for r:
r = 6/(2*pi) = 0.9554 ft

area = pi*r^2 = 0.9554*0.9554 * 3.14 = 2.866 sq. ft

Martina chose a random sample of 10 bags of candy from two different Brands, A and B. All bags in the sample are the same size. Martina counts the number of candy pieces in each bag and plots the results on two dot plots.
(see photo)

Based on the plots, which statement is a valid comparison of the number of candies in the bags of the two Brands?

A. The number of candies in the bags from Brand B is greater and more consistent than the number of candies in the bags from Brand A.
B. The number of candies in the bags from Brand B is greater and less consistent than the number of candies in the bags from Brand A.
C. The number of candies in the bags from Brand B is fewer and more consistent than the number of candies in the bags from Brand A.
D. The number of candies in the bags from brand B is fewer and less consistent than the number of candies in the bags from brand A.

Answers

I think the answer is A.
The answer is:
The number of candies in the bags from brand B is fewer and less consistent than the number of candies in the bags from brand A.

use (r,16) to solve y=2x-4

Answers

(x,y) = (r,16)

With this knowledge, plug in r for x, and 16 for y

16 = 2(r) - 4

Isolate the r, add 4 to both sides

16 (+4) = 2r - 4 (+4)

20 = 2r

Divide 2 from both sides

20/2 = 2r/2

r = 20/2

r = 10

hope this helps
Other Questions
What is the total number of moles (n) of electrons exchanged between the oxidizing agent and the reducing agent in the overall redox equation: 5 Ag (aq) +Mn2 (aq) +4H20()5Ag(s)+ MnO4 (aq) +8H' (aq) a. 1 b. 2 c. 3 d. 5 (e.? A light bulb is placed 20 cm in front of a concave mirror with a focal length of 8 cm. Points Possible: 1, Points Correct: 0 A and B are supplementary. If mA = 83 , what is the measure of B? According the bolded paragraph, what was the benefit of the new phosphorus match? It burst into flame when rubbed on sandpaper. It was made by mixing chemicals. It could be ignited on any dry surface. It threw fire in all directions. when you swat at a fly, which type of neuron stimulates your arm to move? A. sensory neuron B. interneuronC. motor neuronD. autonomic neuron What is something a high school student could NOT do in politics?never become a Congressional Aidejoin Girls State and have a role as a Senatorintern at their state legislaturevolunteer on a Presidential campaign What are the main principles of the code of chivalry. choose all answers that are correct. a. humility b. charity c. kindness d. loyalty If i share 40 in the ratio 1 4 Does LeGuin draw any explicit contrasts between Omelas and any other place? Students who participated in a study of the relationship between confidence and college success, with the results r = .78, indicating that 61% of the variance in college success was accounted for by the students' confidence. upon learning this, your statistics classmate decided that if he worked to increase his confidence, he would certainly become more successful in college. what would you say to him in response to his idea? For every four female students in a training class, there are two men. What is the ratio of female to male students ? how were American Africans treated on the north side during the beginning of the civil war? The destruction of the berlin wall in 1989 is symbolic of the they travelled 551 km from Bagani to Zimbabwe N.R at an average speed of 75km/h and their car has an average petrol consumption of 12 litres per 100 km . calculate the following .1. the time that it will take them to complete the journey , convert to hours & minutes .2. the amount that they will spend on petrol if the petrol costs is R7.25 per litre ? 4b. why would the vena cava be classified as a vein? all veins carry blood back to the heart, except for the pulmonary vein. the vena cava empty into the right side of the heart, so they technically bring blood to the How does the Executive Office of the President (EOP) help the nations chief executive to perform his or her duties? Check all that apply.answer is a&c! Question 1 UnsavedEscoge la traduccin correcta con el mandato informal (t). -Speak Question 1 options:hablanhablamoshablohabla Mama nos ____________todo su amor siempre. dar dio di dieron Write the linear equation 5x-15y=-8 in slope-intercept form. Two different bacteria are growing in a lab. The following functions represents the bacteria. Bacteria A: f(x) = 1000 . 3^x, where x is number of hours. Bacteria B: g(x) = 3000 . 2^x, where x is number of hours.Which of the following statements are true? Select all that apply.( )Bacteria B is growing at a fasster rate than Bacteria A.( ) Baccteria B started with 3000 bacteria.( ) Bacteria A doubles every three hours.( ) Bacteria B doubles every hour.( ) In three hours, the amount of bacteria A will be greater than the amount of Bacteria B.