Mathematics Middle School

HElpppppppppppppp
A bag has 24 marble balls, some are white and some are black. A ball is made from the bag at random and its color is written down and then returned to the bag. If the experiment is repeated 120 times and the white color appears 70 times, how many white balls are there?

Answers

Answer 1

Answer:

there are 17 im pretty sure good luck

Answer 2
pretty sure the answer is 17 but i didn't use a specific method or anything

Related Questions

Find P. Pls help I need help quick

Answers

Answer: 91•
If im correct Everything should add up to 180•
The answer is 91 ……….

PLS help me with theses Questions 30P + brainlyest

Answers

1. 4
2. 3
3. 2
4. 4
5. 2
6. 4.






This is really easy because all you do is multiply the numerator not th denometer
1. 9/8
2. 8 2/3
3. 3 1/3
4. 21/10
5. 40/6
6. 3

hope this helped!!
brainlyest would be awesome please!

Which expression is equivalent to −4 + 9 − 2x − 9x?

−11x + 5
−11x + 13
−11x − 5
11x + 13

Answers

The answer is A short explanation just add the numbers combine the like terms than Rearrange the terms that you got -11+5
The answer to your question is c

Answer correctly for brainliest

Answers

Annabelle is correct because when you are multiplying you are adding your exponents as long as they have the same constant.
Navene is incorrect, but Annabelle is correct due to adding exponents!

Hello, could anyone please help me with this problem.

Maria currently has 465 dollars in her account. She withdrew money for $250 and $175. If she spends $45 to put gas in her car, How much money will Maria have in her account?

Answers

Answer:

40$

Step-by-step explanation:

if maria has 465$ in her account and she withdrew 250$ makes 215 but it also says she withdrew 175 so 215 subtract 175 makes 40 dollars if she uses 45 dollars to fill her car up she still only has 40 dollars i hope this helps

Answer:  $40

Step-by-step explanation: If Maria has 465 dollars and withdraws takes out subtracts $250 she has $215 after that she takes out or subtracts $175 so than she has $40. I think the answer is $40  but I am not so good  at math so I'm not sure

felicia pours 3/4 of a 2 1/2-liter bottle of chlorine solution into a swimming pool then she measures out 3/8 liters of the remaining solution to use to clean the pool filter how much chlorine solution is left in the bottle?

Answers

Answer: 0.8

Step-by-step explanation:

Answer:

0.8

Step-by-step explanation:

PLS help me with theses Questions 30P + brainlyest

Answers

Answer: 3/2

4/(3/8)

9

21

Step-by-step explanation:

Answer:

3x1/2=3/2

Step-by-step explanation:

i cant read the rest its to small if you can take a picture of each problem then i can help u kay

have a nice day and just contact me when you took all the pictures kay!!

If your phone battery goes down by 4.58% every 10 minutes, how much has it gone down in 50 minutes?

Answer as a decimal. Round to the nearest 100th.

Answers

Answer:

22.9

Step-by-step explanation:

4.58 drops every 10 minutes

What would happen if it dropped 50 minutes

4.58x5 = 22.9

Answer:

22.9

Step-by-step explanation:

4.58x5 = 22.9

Randall made 3 withdraws of $18.25 each. What was the change in his account? Include the answer in a sentence.

Answers

$54.75
In the end he took $54.75 out of his bank account
$54.75 is the answer

If a car rolled down a 25-meter ramp, continued rolling another 20 meters at the bottom, then reversed and went back to the top of the ramp, what is the car's displacement? What is the car's distance traveled? Explain

I will give brainliest!

Answers

Answer:
Displacement = 0
Distance = 90

Explanation:
Displacement refers to the overall change an object has made in its position. The car is right back where it started, so the answer is 0.

To calculate total distance, add the distance down the ramp to the additional horizontal distance, then multiply it all by 2 because it made the same journey again in reverse.

25 + 20 = 45
45 x 2 = 90 m
Displacement= 0
Distance=90

please help me with this question, i'm really confused with this.

Combine the like terms.


-9x+12-4x-7

Answers

The answer is -13x+5

Collect the Like Terms

[tex]-9x+12-4x-7[/tex]

[tex]-9x-4x+12-7[/tex]

And Now add & subtract

[tex]-13x+5[/tex]

So the answer is -13x+5

Pls help answer both if you can pls.

Answers

Answer: No

Explanation:

slope of the line: y= 1/3x

(6,2)

2= 1/3(6)

2=2> works for this one

(15,45)

45= 1/3(15)

[tex]45\neq 3[/tex]

The answer is no!
I will attach a photo showing how to solve !

4x^2y - 2xz + 2xy^2 - yz factoring by grouping

Answers

Answer: (2xy-z)(2x+y)

Step-by-step explanation:

In order to factor by grouping, you take the first two and last two terms and find similaritiess by factoring.

First, find out if there is a GCF. In this case, there is none, so we can skip this step.

Next, group (4x^2y-2xz)+(2xy^2-yz). Take out the GCF of the grouped factors separately: 2x(2xy-z)+y(2xy-z). Notice how both of these grouped terms share a common factor.

What you would do is take that and move it to the front. Then, notice how the 2x+y is still remaining. This becomes the 2nd factor.

Therefore, the answer is (2xy-z)(2x+y)

Which expression is equivalent to quantity negative three and one third times d plus three fourths end quantity minus quantity three and five sixths times d plus seven eighths end quantity?

one half times d minus one eighth
one half times d minus one and five eighths
forty three over 6 times d minus one eighth
negative forty three over six times d minus one eighth

Answers

Answer: 27/65

Step-by-step explanation:

Your answer should be 27/65

attached image pls help urgent who ever helps will get 20 points

Answers

Answer:

5

Step-by-step explanation:

6

There were between one and twenty-four tickets sold. How many students purchased this many tickets?
A. 15
B. 17
C. 20
D. 23

Answers

Answer:

D

Step-by-step explanation:

The answer is D. Because if there was ONE to TWENTY FOUR, that means there would be only ONE left.

Question below, would it also be 1/4 as well?

Answers

Answer:

no, it would be opposite 4/1

it would be the opposite, 4/1

Hello, I would really appreciate it if someone would help me out with this problem and explain how they did it if possible. If not that is completely alright. I hope you all have an amazing day. Thank you so much! :) (Even if you don't solve the problem feel free to give it your best guess or even just say "hello" to earn yourself some points. You deserve them.) :D (Will be looking for a brainliest!)

Answers

Answer:

4^7

Step-by-step explanation:

4^5 × 4^9/4^7

When you’re multiplying exponents with the same bases, add powers together, so...

4^5 × 4^9 = 4^14

= 4^14/4^7

When you're dividing exponents with the same bases, subtract powers from each other, so...

4^14 - 4^7 = 4^7

Therefore, 4^7 is your answer! :)

the answer is 4^7 :)

What's the answer to this problem ??
"A stack of boxes is 6/5 meters tall. Each box is 3/10 meter tall. How many boxes are in the stack?"

Answers

Answer:

[tex]{\Large{ \fbox{ \sf{Four \: Boxes }}}}[/tex]

Step-by-step explanation:

Let x boxes are there such that sum of each box's height results in height of stack of boxes,

the expression will look like this

[tex] \frac{3}{10} \times x = \frac{6}{5} [/tex]

solving for x,

[tex]x = \frac{6 \times 10}{5 \times 3} [/tex]

[tex]x = \cancel{ \frac{60}{15} }[/tex]

[tex]x = 4[/tex]

Answer - There are four boxes.

[tex]\sf \small \pink{Thanks }\: \green{for} \: \blue{joining} \: \orange{brainly } \: \red{community}![/tex]

Algebra gotta be the most hardest math. Help a sister out

Answers

I’m pretty sure it’s -5
Answer: -5

Explanation: When you have a problem like this, you can plug in the numbers for each variable directly into the equation, then simplify the equation to solve.

So we get:

12/6 + 5 - 4(6) + 12

Which simplifies to :
2 + 5 - 24 + 12 = -5

What is the equation of this graphed line?

Answers

Answer: y=2x+2

Step-by-step explanation:

slope= [tex]\frac{y2-y1}{x2-x1}[/tex]

= [tex]\frac{6-(-6)}{2-(-4)}[/tex]

=12/6

=2

It follows the y=mx+b formula. B is the slope, rise over run. Since it’s positive, slope is 2/1 or 2. Hope this helps.

What is the perimeter of the actual garden?

Answers

Answer:

62.5 cm

Step-by-step explanation:

8.5 × 2.5 = 21.25 cm

4 × 2.5 = 10 cm

(10 cm × 2) + (21.25 cm × 2) = 62.5

-Therefore, 62.5 cm as the perimeter is the correct answer.

4x2.5=10
8.5x2.5=21.5
(10x2)+(21.5x2)
20+43=63

you are taking a science course in which there will be 5 tests. each worth 100 points, you have scores of 91, 94, 97, and 86 on the first 4 tests. you must make a total of 450 in order to get an A in the course. set up an inequality and solve it to find the sey of possible test scores that will give you an A.

9 + 94 + 97 + 86 + x ≥ 450
368 + x ≥ 450
368 - 368 + x ≥ 450 - 368
x ≥ 82

Answers

Answer:

Step-by-step explanation:

9 + 94 + 97 + 86 + x ≥ 450

368 + x ≥ 450

368 - 368 + x ≥ 450 - 368

x ≥ 82

According to my calculations, the answer should be greater than or equal to 82

A space station is being built for 24 cubic modules. The space station can be any shape but the modules must be placed together so that entire faces match up with each other. Choose a tool to create two different plans for the space station. Eplain why you chose the tool you selected.

Answers

Answer:

The answer is 12 each.

What is the slope of this graph ? Please help asap.

Answers

Where is slope??
I need it to solve…
You didn’t submit a pic of the graph

ASAPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
If Ahmad goes around the room four times at the same time that Muhammad goes three turns. Then how many turns did Ahmad completes around the room when Muhammad completes twelve turns?

Answers

Answer:

Step-by-step explanation:

12

Answer:

16

Step-by-step explanation:

Which proportion can be used to find 65% of 200?

A. 65/200=x/100
B. 65/x= 200/100
C. 65/100=x/200
D. 65/100=200/x

Answers

The answer for this question is option C
the answer for this would be c

HELP PLEASE I NEED AN ANSWER ASAP
(FILE IS BELOW)

Answers

1) 0.6 + 1.1 = 1.7. If you add the 2 highest numbers you get the highest sum
2) -3 - (-0.3) = -2.7. If you subtract the 2 lowest numbers u get the lowest difference
It is -2.7 if i did it correct

12a^2 + 6ab - 26a - 18b Factoring by groups

Answers

Answer:

-14a^3+6ab-18b

Step-by-step explanation:

2( 6a^2 + 3ab - 13a - 9b)

Which expression is equivalent to negative two and one third times d plus four fifths minus the sum of one and five sixths times d plus nine tenths?

A - negative one half times d minus one tenth
B - negative twenty five over six times d minus one tenth
C - twenty five over 6 times d minus one tenth
D - negative one half times d minus one and seven tenths

Answers

The answer would be C

Answer:B is the correct answer

Step-by-step explanation:

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