Mathematics High School


At a bake sale, a student spent $5.70 buying 3 brownies and 5 cookies. His
friend spent $4.50 buying 1 brownie and 6 cookies. What is the price of a
brownie?

Answers

Answer 1

Answer:

i think the answer would be 90 cents for each brownie

Step-by-step explanation:

This can be solved as a system of 2 linear equations.

x = price of a brownie

y = price of a cookie

Since $5.70 bought 3 brownies and 5 cookies, our first equation is:

3x + 5y = 5.70

Since $4.50 bought 1 brownie and 6 cookies, our second equation is:

x + 6y = 4.50

So just solve the following system for x and y:

3x + 5y = 5.7

x + 6y = 4.5

Get x = 4.5 - 6y from the bottom equation and substitute for x in the top equation:

3(4.5 - 6y) + 5y = 5.7

Solve for y:

13.5 - 18y + 5y = 5.7

-13y = -7.8

y = 7.8/13 = 0.6 = price of cookie = $0.60

Now substitute this value of y into either equation and get x.  From the bottom equation,

x + 6(0.60) = 4.50

Solve for x:

x = 0.9 = price of brownie = $0.90

Answer 2
$0.90, so 90 cents. Cookies are $0.60, 60 cents.

Related Questions

Describe a real-life situation that involves the unit rate 7:1. Explain how the quantities are related.​

Answers

Answer:

So can u explain the question a lil bit more

Step-by-step explanation:

get points
answer correctly
u have to find the angles with letters
​

Answers

Answer:

as you know i am no help whatsoever

Step-by-step explanation:

Answer:

answer below

Step-by-step explanation:

1. b=c = 60° (vertically opposite angle)

60°+ z = 180° (linear pair)

a= 180°-60°= 120

a= 120°

2. 112°+ a= 180° (linear pair)

a= 180°- 112°= 68°

x= 68° (a and x are corresponding angles)

3. don't know

Factor 24m-12p+7224m−12p+7224 - 12p + 72 to identify the equivalent expressions.
Choose 2 answers:

(Choice A)
A
6(4m+2p+12)6(4m+2p+12)6, left parenthesis, 4, m, plus, 2, p, plus, 12, right parenthesis

(Choice B)
B
2(12m-6p+36)2(12m−6p+36)2, left parenthesis, 12, m, minus, 6, p, plus, 36, right parenthesis

(Choice C)
C
12(2m-p+6)12(2m−p+6)12, left parenthesis, 2, m, minus, p, plus, 6, right parenthesis

(Choice D)
D
24(m-12p+3)24(m−12p+3)24, left parenthesis, m, minus, 12, p, plus, 3, right parenthesis

Answers

Answer:

C, A

Step-by-step explanation:

If you would like me to explain, I could but this would be difficult. Trust me.

Answer:

C and B

Step-by-step explanation:

An electrician charges $15 plus $11 per hour. Another electrician charges $10 plus $15 per hour. Which of the systems of equations below correctly represents this situation if x represents the number of hours and y represents the total cost?

Answers

y=11x+15

y=15x+10

This is the system of equariob

If yall were in tony's shoes you wouldn't want ppl harassing every SINGLE day about what happened in the past. Yeah it wasn't right what he did but you have to learn how to move on and get a life he apologized and that's what matters. #TonyLopez

Answers

you are so right

and people need to see this

answer pls so i can pass

Answers

Answer: rounded: 2400

60 * 40

Actual: 2508

Step-by-step explanation:

Answer:

My estimation is 2,400 because 60 x 40 = 2,400.

The answer is 2,508

Step-by-step explanation:

I did two digit multiplication its kinda hard to explain with words but there's videos on it! :)

Answered by:

matthewarvin06

Hello! Thanks for reading my answer! If this helped, a brainliest or a thank you would be appreciated! If you have any further questions, please let me know! I'd be happy to help. Thanks! :)

Somone help me please and thank you.

Answers

Y = mx+b plug in the slope on m and the y intercept on b answer is: Y = -x + 2

The answer to this question would be: Y= -x + 2        

On the coordinate plane below, quadrilaterals TRAP and HELP are similar to each other.

The existing dimensions of TRAP are increased and as a result, the original area of the quadrilateral is doubled. Consider the changes in the area of TRAP and determine the new ratio of the areas of TRAP to HELP.
A. 4:1
B. 32:1
C. 16:1
C. 8:1

Answers

Answer:Quadrilateral TRAP has an area that is one-fourth the area of quadrilateral

Step-by-step explanation:

Answer:

8:1

Step-by-step explanation:

find the area in square inches of a cell phone screen that measure 5 3/4 inches by 2 1/2 inches​

Answers

Answer:

it is 3 1/2

Step-by-step explanation:

Answer:

14 3/8

Step-by-step explanation:

i think this is right im only in middle school so if it is wrong i won't be suprised

There are 4 consecutive integers that have a sum of 338. What is the least of these integers?

Answers

Answer:

The least of the four integers is 83.

Step-by-step explanation:

Let x be the first integer.

x + (x + 1) + (x + 2) + (x + 3) = 338

4x + 6 = 338

4x = 332

x = 83

83 + 84 + 85 + 86 = 338

CAN SOMEONE PLEASE HELP ME FIND WHICH MAPPING DIAGRAM REPRESENTS A FUNCTION????

Answers

Answer:

Step-by-step explanation:

Only (C) is represents the function.

HrjrjdjrjruururuGnore  this    

3) What percent of 80 is 52?​

Answers

Answer: 65 percent is the answer

Consider functions f and g.
f(x) = 3/x + 1
What is the value of f(g(1))
A. 9
B. 3/2+1
C. 0
D. 1​

Answers

Answer:

D. 1

Step-by-step explanation:

You are given the values of x that correspond to g(x).

Then you are given f(g(1)), the function of f, the function of g(x) at 1.

When x is 1, g(x) is 0.

f(x) is 3 times the square root of x plus 1.

Since x is now 0, three times the square root of 0 is still zero. The one remains.

   Given function → [tex]f(x)=3\sqrt{x} +1[/tex]

In the picture attached, for every value of 'x', value of function 'g' has been given.

For x = 1, g(1) = 0

Now substitute the value of g(1) in function 'f',

[tex]f(g(1))=f(0)[/tex]

Since, [tex]f(x)=3\sqrt{x} +1[/tex]

Therefore, [tex]f(0)=3\sqrt{0}+1[/tex]

                         [tex]=1[/tex]

    Hence, Option D will be the correct option.

Learn more,

https://brainly.com/question/1757488

I need help so much please help for god plssssss I know it is not A or C

Answers

Answer:

I think it is A, but you said you know that it is not a so I say D

Order the lengths 7/8 feet, 0.8 feet, and 15/16 feet from least to greatest.

Answers

15/16, 7/8, .8
because 7/8=0.875 and .875>.8
15/16 = 0.9375
0.9375> 0.875 > .8

Answer:

Step-by-step explanation:

Convert fractions to decimals

7/8 = 0.875

0.8

15/16 = 0.9375

0.8 < 0.875  < 0.9375

0.8 < 7/8 < 15/16

True or False: The additive inverse (opposite) of (a^2-2a+3) is (-a^2+2a-3)

Answers

Answer:

true

Step-by-step explanation:

Shelby spends 2/7 of her salary on her monthly rent and has $3455 left over. How much does she spend on her rent each month?

Answers

Answer:

$1382

3455 is 5/7 of salary so divide 3455/5 = 691

then multiply 691x2 because rent is 2/7 of salary

691x2 = 1382

-3x - 4y = 2
x + y = -1
use substitution or elimination (show solving steps!)
will mark brainliest​

Answers

Answer:

(-3, 2)

Step-by-step explanation:

x + y = -1      =          x = -1 - y

-3( -1 -y ) -4y = 2

4 + 3y - 4y = 2

-y + 4 = 2

-y = -2

y = 2

x + 2 = -1

x = -3

Pedro has 2.80$ in his pocket. What fraction is equivalent to the amount of money in Pedro's pocket?

Answers

2 and 4/5 hope this helps

46.875 in a fraction

Answers

The fraction is 15/32

Answer:

375/8

Step-by-step explanation:

An item costs x dollars. The tax rate is 5% of the cost of the item, or .05x. Write and simplify an expression to find the total cost.

Answers

Answer:

1.05x

Step-by-step explanation:

The total cost of an item is the sum of original price and the tax on it.

x+0.05x=1.05x

What is the equation of the line that passes through the point (2,−1) and has a slope of 3/2

Answers

answer
y=3/2x -4
hope this helps:))

Given :-

A line having a slope of 3/2 passes through (2,-1) .

To Find :-

The equation of the line .

Answer :-

According to the question ,

m = 3/2

Point = (2,-1)

We know Point slope form of the line as ,

y - y¡ = m ( x - x ¡ )

Substitute ,

y - (-1) = 3/2 ( x - 2 )

y + 1 = 3/2x - 3/2*2

y +1 = 3/2x - 3

2( y +1) = 3/2x *2 - 3*2

2y + 2 = 3x - 6

3x -2y -8 = 0

Carmen and Leo both have bank accounts where they save money per month. Carmen started off with $100 and puts in $5 per month. Leo started off with $75 and puts in $10 per month. How many months will it take for both accounts to be equal. *
5 points
5 months
6 months
7 months
8 months

Answers

Answer:

5 months

Step-by-step explanation:

100 105 110 115 120 125

75   85 95  110 115  125

A triangle with vertices at A(0, 0), B(0, 4), and C(6, 0) is dilated to yield a triangle with vertices at A′(0, 0), B′(0, 10), and C′(15, 0). The origin is the center of dilation. What is the scale factor of the dilation?

Answers

9514 1404 393

Answer:

  2.5

Step-by-step explanation:

The scale factor will be the ratio of any two corresponding non-zero coordinates:

  B'y/By = 10/4 = 2.5

  C'x/Cx = 15/6 = 2.5

The scale factor is 2.5.

Y= 1/3 (x + 4)(x - 2)

Answers

Answer:x = -1 +√ 3(3 + y)

Step-by-step explanation: solve the equation for x by finding a, b and c of the quadratic then applying the quadractic formula

PLEASE HELP ME I WILL GIVE 20 POINTS PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE I forgot how to do this stuff

Answers

Answer:

80

Step-by-step explanation:

Angles on a straight line sum to 180

65+35=100

180-100=80

angle r=80

Answer:

80 degrees.

Step-by-step explanation:

I know a straight line is 180 degrees so I added up 65 and 35 then subtracted that number (100) from 180 (straight line) and I got my answer.

Please make me brainliest!!!!!!!!

Please help for 13 points, 1st to answer gets brainliest
4 1/2−(−6 1/2)

Answers

Answer:

11

Step-by-step explanation:

You just put that down and write it though. I don't know how to explain

Anyone know this? Ill give brainliest if right pls help ^^!!!

Answers

Hi I think it is (-85)
-39 should be the answer
46-(-30)=85

help please it’s due today

Answers

Answer:

A

Step-by-step explanation:

I am not 100% sure how to show it but i graphed it and it's A

Which expression is equivalent to square root of 80

Answers

Umm it shows that you have gotten that question correct as the answer is, 2^4•5

Answer: 2nd one down

Step-by-step explanation:

Other Questions
1.What shape container could be constructed to hold 3 tennis balls stacked that would allow the most efficient use of the container's volume, and why?2. Use geometric shapes and their properties to describe five objects that you see every day? what is the perpendicular slope intercept form plss?? Nicki rides her bike at a constant speed for 6 km. That part of her ride takes her 1 h. She then rides her bike at a constant speed for another 9km. That part of her trip takes her 2 h. What is her average speed? Most successful entrepreneursA. are unwilling to take risksB. lack confidenceC. are highly motivatedD. do not have a lot of energy what the heck is the answer i got 4321 but it said its wrong then i put 4231 it STILL said its wrong this is driving me CRAZY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! SOMEONE HELP PLZ >:()AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!GGGRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR!!!! What governmental body received alot of power from the tenth amendment?A. department of home land securityB. individual statesC. the federal governmentD. the department of defense can yall help me please i dont get a thing about this im too shy to ask for help? What can affect the rate of a chemical change? A. color B. texture C. temperature D. gas bubbles List the square numbers for 0 - 9. If you were starting a company, what would be included in your socialresponsibility statement?\]- Write an equation for the line that has a rate of change of 2 and passes through the point (-1, -5). Whats the best subjects to choose for gcse During the Lakers game, Kobe made 19 shots; some were 2-pointers and the others were 3-pointers. If he scored 45 points, how many were 2 pointers. How many 3-pointers? Please answer fast! I will give brainliest Response a Las preguntas con el vocabulario correcto. No necesitas una frase completa What is 50% of 3000? *What is 15% of 150 leave as decimal An early model of the atom, shown below, incorrectly described the structure of the atom as an area of positive charge with small, negatively charged particles insideThe Plum PuddingModel of an AtomchargedNegativelycharged desWhich of the following correctly describes why the plum pudding model is no longer accepted as an accurate model of the atom?There aren't actually negatively charged particles in atomso Scientists found new evidence and revised the theory to fit the data better.o Scientists discovered that atoms actually have positively charged partides dispersed throughout a negative mass.Scientists revised the evidence to fit this model of the atom better. -(- 3.8a - 9b + 5.8) please help quick asap hurrySelect all of the following characteristics of tughras:A.symbolismB.curving arabesquesC.interlacing linesD.calligraphic textE.geometric shapes Dnde puedes hacer ejercicio?A: En las barras del equipo del patio de juegos.B: En el gimnasio.C: No answer text provided.D: No answer text provided.