Mathematics Middle School

One day the cafeteria supervisor recorded the number of students who chose each type of beverage. Juice 20, Milk 37, Water 18.
Which shows the experimental probability that a student chose juice?

A. 4/11

B. 4/15

C. 20%

D. 40%

Answers

Answer 1

Hai!

Your answer is B.

Brainliest Maybe?

Answer 2
The answer is B. 4/15

Related Questions

pls answer quick rjwejriwejriwekr

Answers

Answer: $181.48 O_O

Step-by-step explanation: i know that stuff

Answer:

$530.48

Step-by-step explanation:

i can answer now yay

is this expression fully simplified? Explain
4x2 + 10 - x - 6x3

Answers

Answer:

-x

Step-by-step explanation:

no it’s not. fully simplified would be -x

bob has 4 times as many stickers as tina. how many stickers does bob have in terms of x?

options:
x - 12
4x
x + 7
12 - x
x - 2/3
4 + x
7x

Answers

the answer should be 4x :)
The answer should be 4x

A triangle is formed by intersecting lines.

What is the measure of angle x?

Answers

The sum of all angles of a triangle = 180.
So 180-90 (right angle) - 51 (other known angle) = 39
the measure of angle x would be 39°
triangles only go up to 180° and that triangle already has a 90° right angle and a 51° acute angle. so the answer is 39°

The question is in the photo :)

Answers

I think the first one is D, not sure about the other though! Sorry and also sorry if it’s not right, I’m not too great at maths :/
Number 1 is 12% and number 2 is also 12% please trust me and mark me brainliest

A store buys a jacket for $60. The markup rate is $15. What is the percent of markup?

Answers

Answer:I think it’s 33.33%? Not 100% sure but I hope it helps!

Step-by-step explanation:

What kind of symmetry does this figure have?
point
line
both line and point
neither

Answers

Answer:

line and point

Step-by-step explanation:

The kind of symmetry the figure given above posses is a line and point symmetry.

What is point symmetry?

A point Symmetry also known as origin symmetry is a Symmetry which occurs when every part of an object has a matching part. That is, the same distance from the central point but in the opposite direction.

Given that;

The objects looks the same when viewed from opposite directions.

We know that;

A line of symmetry is a line that cuts a shape exactly into two equal half. That is, if you fold the shape along the line, both halves would match exactly.

Therefore, the figure given above has both point and line Symmetry.

Learn more about line and point symmetry:

brainly.com/question/1553710

#SPJ3

Which choice could include the degrees of the angles in a quadrilateral?
A: 43,54,127,136
B: 25,35,63,57
C: 80,90,100,110
D: 50,91,101,128​

Answers

the answer is A! it equals 360°!
The answer is yes A it equals to 360

What is this shape called?

Answers

Answer:

This is a triangular prism

Step-by-step explanation:

I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would appreciate it! (this is Pythagorean Theorem if your wondering).

Answers

Answer:

35 squared plus x squared equals 78 Squared

which makes your answer

69.7

Step-by-step explanation:

Answer:

35 square + x square 78 square

= 69.7

Step-by-step explanation:

PLS HELP ME!! I'm having a brain freeze at the moment-

Answers

Answer:

I'm sorry but I was doing it in my notebook and no and it came out a proper answer and well I'm not going to answer something that this bad I don't like to look bad the truth I thought was going to be easier but I couldn't do it I hope that another volunteer arrives and helps you and give you a better answer I will tell you what was my answer I think is not going to be bad 45.90

Step-by-step explanation:

Find the area of the polygon, the vertices are (1,4) (2,1) (4,1) (5,4)

Answers

Answer:

Hello

Step-by-step explanation:

How do you find the equation of each function? Function A is f(x)=3x^2 and Function C is f(x)=18x-16. How do you get those? And then how do you get the equation for Function B? Thanks!

Answers

Answer:

[tex]f(x) = 3^x[/tex] --- Function A

[tex]f(x) = x^2 - 5[/tex] --- Function B

[tex]f(x) = 18x -6[/tex] --- Function C

Step-by-step explanation:

Solving (a): Equation of Function A

An exponential equation is represented as:

[tex]y = ab^x[/tex]

From the graph of function A,

[tex]x = 0\ when\ y = 1[/tex]

[tex]x = 1\ when\ y = 3[/tex]

For: [tex]x = 0\ when\ y = 1[/tex]

[tex]y = ab^x[/tex] becomes

[tex]1 = ab^0[/tex]

[tex]1 = a[/tex]

[tex]a =1[/tex]

For: [tex]x = 1\ when\ y = 3[/tex]

[tex]y = ab^x[/tex] becomes

[tex]3 = a*b^1[/tex]

[tex]3 = a*b[/tex]

Substitute 1 for a

[tex]3 = 1*b[/tex]

[tex]3 = b[/tex]

[tex]b = 3[/tex]

[tex]y = ab^x[/tex] becomes

[tex]y = 1*3^x[/tex]

[tex]y = 3^x[/tex]

Replace y with f(x)

[tex]f(x) = 3^x[/tex]

Solving (b): Equation of Function B

A quadratic equation is represented as:

[tex]y = ax^2 + bx + c[/tex]

From the table of function B,

[tex]x = 3\ when\ y =4[/tex]

[tex]x = 5\ when\ y =20[/tex]

[tex]x = 6\ when\ y =31[/tex]

For: [tex]x = 3\ when\ y =4[/tex]

[tex]y = ax^2 + bx + c[/tex] becomes

[tex]4 = a*3^2 + b*3 + c[/tex]

[tex]4 = a*9 + 3b + c[/tex]

[tex]4 = 9a + 3b + c[/tex]

For [tex]x = 5\ when\ y =20[/tex]

[tex]y = ax^2 + bx + c[/tex] becomes

[tex]20 = a*5^2 + b*5 + c[/tex]

[tex]20 = a*25 + b*5 + c[/tex]

[tex]20 = 25a + 5b + c[/tex]

For [tex]x = 6\ when\ y =31[/tex]

[tex]y = ax^2 + bx + c[/tex] becomes

[tex]31 = a*6^2 + b*6 + c[/tex]

[tex]31 = a*36 + b*6 + c[/tex]

[tex]31 = 36a + 6b + c[/tex]

So, we solve for a, b and c in:

[tex]4 = 9a + 3b + c[/tex]

[tex]20 = 25a + 5b + c[/tex]

[tex]31 = 36a + 6b + c[/tex]

Make c the subject in [tex]4 = 9a + 3b + c[/tex]

[tex]c = 4 - 9a - 3b[/tex]

Substitute [tex]c = 4 - 9a - 3b[/tex] in [tex]20 = 25a + 5b + c[/tex] and [tex]31 = 36a + 6b + c[/tex]

[tex]20 = 25a + 5b + c[/tex] becomes

[tex]20 = 25a + 5b + 4-9a-3b[/tex]

Collect Like Terms

[tex]-4+20 = 25a -9a+ 5b -3b[/tex]

[tex]16 = 16a+ 2b[/tex]

Divide through by 2

[tex]8 = 8a + b[/tex]

[tex]c = 4 - 9a - 3b[/tex]

[tex]31 = 36a + 6b + c[/tex] becomes

[tex]31 = 36a + 6b + 4 - 9a - 3b[/tex]

Collect Like Terms

[tex]-4+31 = 36a - 9a+ 6b - 3b[/tex]

[tex]27 = 27a+ 3b[/tex]

Divide through by 3

[tex]9 = 9a + b[/tex]

Solve for a and b in: [tex]8 = 8a + b[/tex] and [tex]9 = 9a + b[/tex]

Subtract both equations:

[tex]8 - 9 = 8a - 9a + b - b[/tex]

[tex]8 - 9 = 8a - 9a[/tex]

[tex]-1 = -a[/tex]

Divide both sides by -1

[tex]1 = a[/tex]

[tex]a = 1[/tex]

Substitute 1 for a in [tex]9 = 9a + b[/tex]

[tex]9 = 9*1 + b[/tex]

[tex]9 = 9 +b[/tex]

Subtract 9 from both sides

[tex]9-9=9-9+b[/tex]

[tex]0=b[/tex]

[tex]b = 0[/tex]

Substitute [tex]b = 0[/tex] and [tex]a = 1[/tex] in [tex]c = 4 - 9a - 3b[/tex]

[tex]c = 4 - 9*1-3*0[/tex]

[tex]c = 4 - 9-0[/tex]

[tex]c = -5[/tex]

So, the equation is:

[tex]y = ax^2 + bx + c[/tex]

[tex]y=1*x^2 +0*x-5[/tex]

[tex]y=x^2 -5[/tex]

Replace y with f(x)

[tex]f(x) = x^2 - 5[/tex]

Solving (c): Equation of Function C

This is calculated using:

[tex]f(x) =a + (x -1)d[/tex]

Where

[tex]a = 12[/tex] -- the first term

d = the difference between successive terms

[tex]d = 30 -12 = 48-30 = 66 -48[/tex]

[tex]d =18[/tex]

So, we have:

[tex]f(x) =a + (x -1)d[/tex]

[tex]f(x) = 12 + (x - 1)*18[/tex]

Open bracket

[tex]f(x) = 12 + 18x - 18[/tex]

Collect Like Terms

[tex]f(x) = 18x - 18+12[/tex]

[tex]f(x) = 18x -6[/tex]

Which equation could be used to solve problems involving the relationships between the angles?
A) 90+(8a+9)=(11+2a)
B) 90-(8a+9)=(11+2a)
C) (11+2a)-90=(8a+9)
D) (8a+9)-(11+2a)=90

Answers

Answer:

B

Step-by-step explanation:

I need this quickly they both need expressions I think so

(will mark brainlist if right)

Answers

Answer:

1 - 155 +27n

2- 2x+15=33

Step-by-step explanation:

hope this helps

what are facts about cross-sections (math)?

Answers

Answer: A cross section is the shape we get when cutting straight through an object.

Step-by-step explanation:

The shape we get when cutting straight through an object.

if a van traveled 150 miles in 3 hours, how many miles could the van travel in 6 hours?

Answers

Answer:

300 because if he traveled 150 in 3 to find six just multiply by 2

Answer:

The van traveled 300 miles in 6 hours.

Step-by-step explanation:

150 divided by 3 = 50

So each hour the van traveled 50 miles.

50 x 6 = 300

The spinner below is spun twice. What is the probability that the it will land on a white section and then a striped section?

Answers

5/8 or 65%


...............
It is a 4 in 8 chance that the spinner will land on the white section and a 1 in 8 chance that the spinner will land on the striped section. Since there are more white sections than any other it is more likely for the spinner to land on the plain white.

What is the probability that the computer produces the first letter of your name?

Answers

1/26

Because there are 26 letter in the Alphabet

Answer: 1/26

Step-by-step explanation:

The equation for the area of a circle is given.

A=πr2

If the radius (r) of the circle is 3, what is the area in terms of π?

Answers

9 and then put a pi symbol. You do 3squared since it’s the radius and that’s 9. Then since it’s wanted in terms of pi that’s it. 9pi

Explain the parts of an algebraic expression and what algebraic expressions can represent.

Plzz helppp!!!!!!!!!!!!!

Answers

Algebraic expressions are combinations of variables , numbers, and at least one arithmetic operation. For example, 2x+4y−9 is an algebraic expression. Term: Each expression is made up of terms. A term can be a signed number, a variable, or a constant multiplied by a variable or variables.
an equation solving for an unknown value

Please help! Thank youuuuu~

Answers

Look up "Everything You Need To Know About Math In One Big Fat Notebook pdf." It's the best thing I've ever been given, I have it with me in math class all the time and I've aced every test. I have it with me right now and it has everything I've ever been taught about math in it so it might help you.

Three friends are buying seashells at the gift shop on the beach. Melanie buys 2 seashells for​ $0.80. Rosi buys 5 seashells for​ $2.00. Carlos buys 4 seashells for​ $1.60. Use a graph to determine whether the number of seashells and the cost have a proportional relationship. If​ so, what is the constant of proportionality and what does it​ mean?

Answers

Answer:

17.08

Step-by-step explanation:

You earn $60 for mowing 5 lawns. How much do you earn for mowing 15 lawns? Complete the ratio table to help you solve the problem. Write your answer in a complete sentence.

Answers

You earn $180 for mowing 15 lawns.
180 because 60 divided by 5 is 12 and 12x15=180 :) hope this helped

Which of expressions illustrates the associative property?

ab + bc

a ( b + c ) = ab + bc

a ( b + c ) = (a + b ) + c

a + b + c = c + b + a

Answers

Answer:

c)   a ( b + c ) = (a + b ) + c

Step-by-step explanation:

The associative property is a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result. In propositional logic, associativity is a valid rule of replacement for expressions in logical proofs.

please help me with this for brainliest please dont play around XD

Answers

Answer:

23/6

Step-by-step explanation:

3/56

23/6 hope it helps!! Lol

First right equals brainliest, Pls dont answer for the points this is serious. I just need this and 3 more which I will ask later. Anyway I am making this worth more points because I need help:)

Answers

I can't see the picture, can you please explain the problem in the comment bar below this so can edit my answer to help?

You can’t see it because you can only see pictures on the app

Help me! Brainliest!

Answers

use the app socratic

Answer:

Rip i saw you said times up :/

Step-by-step explanation:

Four students set up a lemonade stand. At the end of the day, their profit is $17.52. How much money do they each have when the profit is split equally?

Answers

So each student gets $4.38 each when the profit is split equally

Answer:

$6

Step-by-step explanation:

halp me plez I dont wanna fail ( MUST BE A EXPRESSION)

Answers

Answer:

2x+15=33

Step-by-step explanation:

Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.

Since he started doing  15 sit-ups on the first day, the total number of sit-ups

after x days would be 2n+15.

Since he did a total of 33 sit ups today, then 2n+15=33

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