In a jar of marbles, the ratio of green marbles to black marbles is 3:5. If the jar contains 21 green marbles, how many black marbles are in the jar?

green 3 21
black 5 ?




Your answer:

10


12


30


35

Answers

Answer 1

Answer:

there are 35 black marbles in the jar

Step-by-step explanation:

3*7=21

so..

5*7=35


Related Questions

is 13 and 98 relatively prime

Answers

Answer: Yes they are

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Hope I helped

Solve the system of equations using the elimination method. 1. 3 − 2 = 10 7 + 2 = 30 pls hurry

Answers

Answer:

1 = 72 = 30

Step-by-step explanation:

I think that is answer but im not sure if the 10 is being multipilied by the 7.

1. 10 times 7 = 70 + 2 = 72

2. 3-2 =1

3. 1 = 72 = 30

Arthur sits park reading a newspaper, then starts walking home at a constant pace he stops for bagels then walks the rest of the way home
1.what does the x-axis represent in this situation?

2. What’s does the y-axis represent?

Answers

1. The x-axis determines how much time it takes him to walk home,

2. The y-axis determines how much he walks, and when he walks.

So when the graph is flat, he is not moving towards his house, but the time is still counting.

Answer:

1. What does the x-axis represent in this situation?

The x-axis represents time.

2. What does the y-axis represent?

The y-axis represents distance.

3. During which parts of the graph does Arthur's distance from home decrease?

Sections 2 and 4.

4. When is Arthur waiting for bagels? Explain how you know.

Section 3. The flat areas represent times when Arthur is not moving. We know that the first flat area shows Arthur reading his newspaper, and the third is when he reaches home; so the second flat area represents the time in which Arthur is waiting for bagels.

5. If Arthur's pace had not been constant after leaving the bagel shop, which part of the graph

would change? Explain how that part of the graph would change.

The part of the graph that would change is part 4. If his pace was not constant, section 4 would not be uniform, and would have many abnormalities. Essentially, Arthur would be randomly speeding up and slowing down.

6. If Arthur had spent less time reading his newspaper, which part of the graph would change? How would that part change?

If Arthur had spent less time reading his newspaper, the whole graph would change. Section one would be shorter, and the entire line would also be shorter. The distance on the graph from the beginning of section 1 to the end of section 5 would be reduced.

Step-by-step explanation:

Sarah has $400 in a savings account at the beginning of the summer. She wants to have more than $150 left in her account by the end of the summer. She withdraws $25 per week. How many weeks can she withdraw money from her account and still make her goal? Write an inequality to express the situation.

Answers

Answer:

10 weeks

Step-by-step explanation:

400-150=250/25=10

10 weeks 150+50+100+100=400

The advertised price of a new car is dollars. The dealership is offering a $2000 rebate and a 10% discount off the price of the car.

Answers

Answer:

U shall pay $1800

Step-by-step explanation:

2000 divided by 10%, get 200 and subtract from 2000 THEN BAM THE ANSWER YW MARK BRAINLIEST BC IM BIG BRAIN

It’s 25 to the forth power

Sam aims to run a total of 18 miles in 5 weeks. He ran 2 ¾ miles in the first week, 3 ½ miles in the second week, 5 ⅓ miles in week three, and 2 ⅘ miles in week four. How many more miles would he need to complete to reach his target?

Answers

Answer:

[tex]\frac{37}{60}[/tex] or 0.62 of a mile that he will need to complete to reach his target.

Step-by-step explanation:

[tex]2 \frac{3}{4} + 3 \frac{1}{2} + 5 \frac{1}{3} + 2 \frac{4}{5} = \frac{863}{60} \\18-\frac{863}{60} = \frac{37}{60}/ 0.62[/tex]

The population of fish in a take was approximately 5.4 * 10 ^ 4 in 2012. The next year, 2013population tripled What was the opproximate population of fish in this in 2013?

Answers

I think it’s 162000 because 5.4 * 10 ^4 = 54,000 in standard form and 54,000 * 3 = 162,000

Evaluate 2(x - 3) + n for x = 7 and n = -1 help

Answers

Answer:

8t-1

Step-by-step explanation:

plug da numbers in!

Answer:

7

Step-by-step explanation:

Help me please I will give 5 stars a thanks a crown and 10 points

Answers

thats hard bro hopefully somebody helps you figure it out

Answer:

so 12 games

Step-by-step explanation:

8 divided by 8 is 1

so 30 divided by 8 is 4

so 11 x 4 is 44 so it is 12  bc you have to add one more

Use complete sentences to describe the relationship between sets A and B if A ⊆ B.
A = {8}
B = {7, 8, 9}

Answers

Answer:

b includes a in it this is a full sentense

20 POINTS PLEASE LOOK AT PICTURE!

Answers

Answer:

the answer is c

Step-by-step explanation:

-6x6=-36

hopefully this helps :)

Answer:The answer is C
Explanation: -6x6=-36

how can i find a percentage if its not over 100? For example the fraction 4/25, how i could i turn that into a percent

Answers

Answer:

Step-by-step explanation:

to find percent you would simplify that fraction so that it’s a decimal (0.16) and multiply by 100 (16) and add a percent symbol so it would be 16%

basically the equation for finding percent would be

(x/y)100

Divide then multiply by 100

If possible, how can I write y=2x -1 in the mx+b=y form?

Answers

Answer:

2x-1=y

Step-by-step explanation:

You currently have y=2x-1 in y=mx+b form.

All we have to do is reorganize the terms into: mx+b=y

Answer:

The answer is 2x-1=y

Hope this helped!

for 15 hours of work a plumber charges $330 if he charges the same amount for each hour of work which table shows the correct relationship between what he charges and the number of hours he works

Answers

Answer:

the 2 table

Step-by-step explanation:

330 ÷ 15 = 22 and in the 2 table is showing  that

The table that shows the correct relationship between what he charges and the number of hours he works is the third table.

Given that,

The amount charged by the plumber is $330.And, there are the 15 working hours.

Based on the above information, the calculation is as follows:

[tex]= \frac{\$330}{15}[/tex]

= $22

Therefore we can conclude that the table that shows the correct relationship between what he charges and the number of hours he works is the third table.

Learn more: brainly.com/question/3530056

plz help i hate when calculator does this how do ik what the answer is if all these numbers a bunched together????

Answers

Answer:

that would be 4.2

Step-by-step explanation:

to use he calculator don't do 50 divided by 210 do 210 divided by 50

The answer is going to be 4.2

How can we use area models to represent equal fractions?

Answers

Answer:

As we continue our series on developing fraction sense, hopefully by now you are feeling a little more confident and equipped. Learning about fractions doesn’t have to be scary, and it doesn’t have to mean hours of pencil and paper computations. Instead, the focus should be on deep understanding, using concrete, visual models. Today, I want to share a powerful visual, which students can use to compare, add, subtract, multiply and divide fractions: area models

Step-by-step explanation:

As we continue our series on developing fraction sense, hopefully by now you are feeling a little more confident and equipped. Learning about fractions doesn’t have to be scary, and it doesn’t have to mean hours of pencil and paper computations. Instead, the focus should be on deep understanding, using concrete, visual models.

It is about 1.62×10⁶ miles from Venus to Earth. It is about 5.4×10⁷ from Earth to Mars. How far is it total from Venus to Earth than Earth to Mars? Write your answer in scientific notation.

Answers

Answer:

-5.238- [tex]10^{7}[/tex]

or

Since the exponent of the scientific notation is positive, move the decimal point  6  places to the right.

1620000

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  

10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Hope this helps :)

What is the greatest common factor of the terms in the expression 21 x minus 18 x + 28 x y?
3
3x
x
xy

Answers

The only thing each of those terms have in common is an x.

3 does not go into 28, so 3 is not an option. Only one term has a y, the other two do not. Y is not an option.

The answer is x.

Answer:

What is the greatest common factor of the terms in the expression 21 x minus 18 x + 28 x y?

3

3x

x✅

xy

Please mark brainiest please.

What figure is a position on a line, plane, or space?

Answers

Line I’m pretty sure
I agree Line is the answer

5/7x - 1/3x = 8
Plz help me due today

Answers

Answer:

x=21

Step-by-step explanation:

hope that helps

Let's solve your equation step-by-step.

5/7x−1/3x=8

Step 1: Simplify both sides of the equation.

5/7x 1/3x=8

5/7x+ −1/3x=8

(5/7x+ −1/3x)=8(Combine Like Terms)

8/21 x=8

8/21x=8

Step 2: Multiply both sides by 21/8.

(21/8)*(8/21x)=(21/8)*(8)

Answer:

x=21

Answer:

x= 21

Step-by-step explanation:

look at the attachment

hope this helps

plz don't report

Please help for points math home work

Answers

Answer:

it would be (6,2)

Step-by-step explanation:

because  you are comparing the amount of faces to triangles

Answer:

1. 6:2

2. 8:6 12:9

3. you would need 14 teaspoons of red paint to make the mixture.

4. she rode her bike one fourth of a mile. 2 divided by 8 is 0.35 which in fraction form is 1/4.

Step-by-step explanation:

A is plotted on a coordinate grid at start bracket negative 3 and 1 over 2, 2 end bracket.. Choose the correct grid that best shows the location of the point.

1. A coordinate grid that shows a point located halfway between 3 and 4 units to the left and 2 down from the origin.

2. A coordinate grid that shows a point located halfway between 3 and 4 units to the right and 2 up from the origin.

3. A coordinate grid that shows a point located halfway between 3 and 4 units to the right and 2 down from the origin.

4. A coordinate grid that shows a point located halfway between 3 and 4 units to the left and 2 up from the origin.

Answers

Answer:

B

Step-by-step explanation:

have a good day and stay safe

Answer:

The answer is A :)

Step-by-step explanation:

HELP ASAP IM BEING TIMED!!!!!!!!!!!!

Parallel lines s and t are cut by a transversal r. Parallel lines s and t are cut by transversal r. Clockwise from top left, the angles formed with r and s are 1, 2, 3, 4; the angles formed with r and t are 5, 6, 7, 8. Which angles are alternate exterior angles? Angle2 and Angle8 Angle4 and Angle6 Angle1 and Angle5 Angle1 and Angle8

Answers

Answer:

1 and 7, 6 and 4

Step-by-step explanation:

Answer:

1 7 , 6 4

Step-by-step explanation:

idk this someone help please

Answers

Answer:15.36

Step-by-step explanation:

12/5=2.4 32/5=6.4

2.4 x 6.4= 15.36

Answer:

The answer to this would be option A as 32x12 is 384 then divide 384 by 5 and the answer is approximately 15.

Step-by-step explanation:

I am experienced as I have done this many times and is really easy to me.

The heights of the elevators can be modeled by the linear functions. At times t=0. Elevator A is 16 feet above ground floor and descends at the rate of 4 feet per minutes. Elevator B is shown in the graph. Select ALL the true statements.


A. The initial height of Elevator A is less than Elevator B


B. Elevator A descends at a faster rate than Elevator B


C. Elevator A will reach the ground first


D. Elevator B will reach the ground first


E. The initial height of Elevator B is less than Elevator A

Answers

The answer is second one which is B

Answer:

C

Step-by-step explanation:

I just did it and got it right

PLS DO ALL thank you

Answers

-2 > -4
1 > -3
5 > 0

For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 8 N acts on a certain object, the acceleration of
the object is 2 m/s^2. If the acceleration of the object becomes 3 m/s^2,what is the force?

Answers

The Force equals to Mass times acceleration.

Thus, we now know that the mass of the object is 4 (unit of mass). Hence 8/2=4.

So, 3 times 2 equals to 6 N.

Am I correct?

Evaluate 12x – 8y + 9 if x = 19 and y = 11

Answers

Answer:149

Step-by-step explanation:

Answer:

12*19=228-8y=8*11=88-228=140+9=149

hope this helps sorry if way off

ANSWERS
1---------


2-------------



3--------------



4--------------

Answers

1) No
2) Yes
3) Yes
4) Yes

if you need me to explain i will.

have a great rest of your day! :)

PLEASE help almost due!! Only do A, D, and G plz.

Answers

A. 100 D. 8.25 G. 31.5 those are the answer have a great day
A. 100 D. 8.25 G. 31.5
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