Mathematics Middle School

an algebraic equation to represent the problem:

John bought 15 cookies and ate 3 of them.

What percent of the cookies did he eat?
the equation should be something like this n = 40/100 * 6

Answers

Answer 1

Answer:

he ate 20 percent 3 out of 15 is basically 3/15

Related Questions

heyyy, please answer :]

Answers

The solution is “no real solution”
Because the slope is the same, so they are parallel.

Hope that help!! :-)

Answer:

it is no solution

Step-by-step explanation:

I'm solving systems and I don't understand how to do it pls helpp

Answers

Answer:

Use the process of elimination. I'll only do one example since you have 4.

Step-by-step explanation:

Let's do the first question.

2x-3y=-11

2x+y=9

Our goal here is to be left with one variable to solve, this way we can use the answer for that variable to find the other. A.K.A only find X to plug into the equation to find Y. To do this, we'll use the process of elimination, in which we need to cancel out a variable.

X seems the easiest here. To cancel 2 (in the top equation), you need to have a -2. And that -2 needs to be the x coefficient in the 2nd equation, in order for us to "cancel" it out. To get -2, you multiply 2 by -1.

-1(2x+y)= -1(9)

Note that whatever you do to one side, you need to do it to both sides! Hence, why I also multiplied 9 by -1. You should now be left with:

-2x -y = -9

Now, we cancel out the positive 2 and -2 from both equations by adding the two equations.

2x-3y= 11

+

-2x-y=-9

X cancels out, so we're left with -4y=-20. Solve for Y, which is 5.

-4y=-20

y=5

Now that you have the Y value, plug it into any of the two equations to find your X value.

2x-3y=11

2x-3(5)=11

2x-15=11

2x=26

x=13

And voilah! Our Y value is 5, and our X value is 13.

It's pretty simple once you understand what's going on. All that we did was to cancel out one variable (either X or Y) in the two equations so that we're left with only one variable to solve. If we cancel out X, we only need to solve for Y. You do this by manipulating one of the two equations (doesn't matter which one). Once you find either X or Y, all you need to is to plug it into one of the original equations. Then, you'll have both X and Y.

And that my friend, is the process of elimination. Good luck!

Nzkbxaibzeugey was


the question says “is the relation above a function?”

Answers

Answer:

No, because two of the points are on 4 on the x-axis.

Step-by-step explanation:

The
Image isn’t loading for me

HELP QUICK... I NEED THIS FOR MATH

Answers

Answer:

41,500

Step-by-step explanation:

just do subtraction

(113,000 - 71,500)

The answer would be 45,500

PLS PSLS PLSS ASWER MEEEEE ASNNWER THIS QUESTION THEN READ THE STORY2. If the lions ever outnumber the wildebeest on either side of the river (including the animals in the boat if it's on that side), they'll eat the wildebeest.

THE STORY There are three lions and three wildebeests stuck on the river bank which is on fire. It is your job to save the animals. How do three lions and three wildebeests cross over to the safe river bank on the other side of a crocodile-infested river to escape the flames? There’s a raft! But there are a few rules that must be followed in order to solve the puzzle:

Answers

i see the story and the question but what are the rules to solve the puzzle

Jason enjoys walking around the block with his dog, Ringo. When Jason and Ringo walk w times around the block, they walk 0.75w miles. Last week, Jason and Ringo walked 12 times around the block.
How many miles did Jason and Ringo walk around the block last week?
Write your answer as a whole number or decimal.

Answers

link here : btxytz.com

CAN SOMEONE PLZ HELP ME 15 points <3

Answers

Answer:

the answer should be C

please help I need it, will give brainliest

Answers

It is 270. Multiply 18 by 12 for the square portion of the shape. Then multiply 18 by 6 for the right triangle. I got 6 by subtracting the bottom line by the top line of the quadrilateral.

7th grade math does anyone got any idea of what this could be

Answers

Answer:

-1 + 4x

Step-by-step explanation:

They had completely forgot about the 2x's

they pretty much just got rid of them

The correct answer would be -1 + 4x

Kendall makes candles and sells them online. To make an Essential Elegance candle, she adds 3 drops of lavender and 6 drops of vanilla to a bowl of unscented wax. To make a Garden Glory candle, she adds 4 drops of lavender and 10 drops of vanilla to the bowl instead. Which candle has a greater ratio of lavender to vanilla?

EEEEEEEEEEEEEEEEEE

Answers

Answer:

La gardeende

Step-by-step explanation:

An art teacher makes a batch of purple paint by mixing 3/4 cup red paint with 3/4 cup of blue paint. If she mikes 13 batches, how many cups of purple paint will she have?

Answers

She will have 19.5 cups of purple paint.
I couldn’t write the explanation of how you get the answer, but look your question up on Brainly and it’ll give you your explanation.

Hope this helped! :)

Answer:

She will have 19 ¹/₂ batches of purple paint

Step-by-step explanation:

r + b = 1 bp

³/₄ r + ³/₄ b = 1 bp

(³/₄ + ³/₄) * 13 = x bp

⁶/₄ = 1 ¹/₂

1 ¹/₂ * 13 = 13 ¹³/₂ = 19 ¹/₂ batches

VARIABLE KEY:

r = red

b = blue

bp = batches of purple

x = total number of bp

Good luck!!

Children get a 15% discount on tickets to an amusement park. Jun had a coupon for 5% off any two tickets. He used the coupon for himself and his 4-year-old son, Jack. If regular admission for a ticket was $60, what did Jun pay for the two tickets?

Answers

The amount that Jun paid for the two tickets given the discount rate and the coupon rates is $105.45.

How much was paid for the two tickets?

Discounts and coupons reduce the price of an item.

Cost of the child's ticket after the discount = (100 - 15%) x 60 = $51

Cost of both tickets after the coupon = (100 - 5) x (51 + 60) = $105.45

To learn more about how to calculate discounts, please check: https://brainly.com/question/26061308

#SPJ2

Find the third angle of a right triangle if one of the angles measures 38^{\circ}38
∘
.

Answers

Answer: 52

Step-by-step explanation:

add 90 and 38 then subtract from 180

I am pretty sore the answer is 52

A girl's feet are negative 2 over 4 yards from the surface of a pool. A boy's feet are negative 3 over 4 yards from the surface of the pool. Determine whose feet are closer to the surface.

The girl's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.
The boy's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.
The girl's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.
The boy's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.

Answers

Answer:

They’re the same close

Step-by-step explanation:

because when they go it equals they’re the same :p

Answer:

1st Choice

Step-by-step explanation:

Trust me it is the 1st one. :) If it is correct please mark me the brainiest. :D NP

Help PLZ Answer Questions Below

Answers

Answer:

First question: 2/3

Second question: -2

Step-by-step explanation:

2x - 3y = 6

Subtract 2x from both sides

-3y = -2x + 6

Multiply by -1

3y = 2x - 6

divide by 3

y = 2/3x -2

The equation basically asks for slope, so 2/3

x + 1/2y = 5

Subtract x

1/2y = -x + 5

multiply by 2

y = -2x + 10

it is -2

Students were surveyed about the time they wake up on school mornings. The results are shown in the table.


Survey Results

Time Range Number of Students

Before 6:00 3

6:00-6:30 13

After 6:30 4


Out of 500 students in the school, what is the BEST prediction for the number of students who wake up after 6:30?

Answers

3+13+4=20 500/20=25 25•4= 100 so 100 should be the answer
The answer to your question is 100.

The dimensions of a square right pyramid are shown below.

The pyramid is sliced by a plane that passes vertically through the top

vertex and is perpendicular to the base. What is the resulting two-
dimensional shape and the area of the plane section?

Answers

Answer:A and C

Step-by-step explanation:Hope it helps:)

The two-dimensional shape and the area of the plane section should be like 40 square units and 16 square units.

What is the pyramid?

A pyramid refers to the structure where the outer surface should be considered as the triangular and the converge to the individual step at the top that represent the shape and it roughly pyramid for the geometric sense.

Therefore, the option 1 and option 2 should be considered.

Learn more about pyramid here: https://brainly.com/question/17190798

can someone please help with this problem?

Answers

Can’t see it the answer

Pls help need help ASAP 50 points you will be reported if the answer is wrong

Answers

Answer:

I think it is 10

Step-by-step explanation:

Answer: i forgot what volume is can you please tell me what it means i forgot but once i understand i will help you <3

Step-by-step explanation:

Caden has 35 buttons. Todd has b more buttons than Caden. Write an expression that shows how many buttons Todd has.

Answers

The expression is 35+b

A food shop makes wraps where you can only choose one kind of wrap, one meat, and one veggie. (NO TROLL ANSWER)

Answers

Answer:
we don’t have the whole question so we don’t know what amber likes and doesn’t like.
Explanation:
next time include the WHOLE question

7th-grade math work please answer the ones you know the answer to the person who answers more than 2 gets brainliest

Answers

Answer:

the one with the diameter of 64 is f

Step-by-step explanation:

The answer to the ice cream one is 8

Please help and explain how I can do this on my own...

Answers

I believe the mode is singing
The mode is the term or item that occurs most frequently in a list. In this case, singing appears 7 times in the list, so it would be the mode.

MATH SMARTIES I WILL GIVE BRAINLIEST PLEASE INCLUDE AN EXPLINATION MEANING THE WORK PLEASE SO THEN I CAN UNDERSTAND THE ANSWER PLEASE AND THANK YOU PLEASE ALSO NUMBER THE QUESTIONS FOR THE ONE YOU ARE ANSWERING AND SHOWING WORK FOR PLEASE

Answers

Answer:

8) x = 4°

9) $7176.53

10) 22

Step-by-step explanation:

8) The sum of all three interior angles of any triangle = 180°

11x + 25x + 9x = 180°

45x = 180°

divide both sides of the equation by 45:

x = 4°

9) ($6500 x 1.02) = 6630 x 1.02 = 6762.60 x1.02 = 6897.85 x 1.02 = 7035.81 x 1.02 = 7176.53

10) (2/5)(55) =110/5 = 22

I need help plz real onez plz

Answers

The mean is 10.
To find the mean you add up all the numbers and divide by how many sets of numbers there were.
8+10+11+8+13=50
50/5=10.
The correct anwser would be 10

Please show your work

Answers

Answer:

D

Step-by-step explanation:

The decimal must move 14 decimal places to the right in order to equal 123,000,000,000,000.

The correct answer to your question is d

Draw a right triangle with side lengths of 3, 4, and 5 units.
and answer the problem please :')

Answers

Answer:

Image below

Step-by-step explanation:

Given: Side lengths of a right triangle 3,4 and 5 units.

To draw: A right triangle with the given side length.

Solution:

We know, in a right angle triangle hypotenuse is the longest side and satisfying Pythagoras theorem.

From the given side length,

Hypotenuse = 5 unit

We can take any of the base and perpendicular.

Let, Base = 3 unit

Perpendicular = 4 unit.

It a right-angle triangle with a hypotenuse 5 unit.

Now we draw a right angle triangle taking in the first 3 base and 4 perpendicular and second 3 perpendicular and 4 bases.

40 points!! please do not plagiarize, I need this to be original :D
Erik is performing a marble experiment in math class. His teacher places an equal number of black, red, and white marbles in a bag. Then, Erik randomly takes out a marble, records the result, and puts the marble back in the bag. Each of the first four times Erik takes out a marble, he gets a black marble.

A. What is the theoretical probability of Erik picking a black marble next time? Based on Erik's results, what is the experimental probability of Erik picking a black marble next time?
B. Explain the difference between the two probabilities you found in part A.
C. What is the theoretical probability and likelihood of getting four black marbles in a row?

Answers

Answer:

Every one of us would have encountered multiple situations in life where we had to take a chance or risk. Depending on the situation, it can be predicted up to a certain extent if a particular event is going to take place or not. This chance of occurrence of a particular event is what we study in probability. In our everyday life, we are more accustomed to the word ‘chance’ as compared to the word ‘probability’. Since Mathematics is all about quantifying things, the theory of probability basically quantifies these chances of occurrence or non-occurrence of certain events. In this article, we are going to discuss what is probability and its two different types of approaches with examples.

please do it correctly , will give brainilest to right answer and not links pls

Answers

13
A=(b)(h)
91=b(7)
13=b
Can someone help with this

pls help due in like 10 mins- no mfkn links pls pls pls
no need to explain

Answers

Answer: 60

Step-by-step explanation:

B is the answer

Hope this helps
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