Mathematics Middle School

The owner of a lemonade stand mixes juice that costs 2 dollars per gallon with juice that costs 7 dollars per gallon. She gets 20 gallons of punch that costs 4 dollars per gallon. How much of each juice does she use?

Answers

Answer 1

Answer:

8 gallons at $7

12 gallons at $2

Step-by-step explanation:

x gallons at $7 with the remaining (20 - x) gallons at $2 to get 20 gallons at $4

x(7) + (20 - x)(2) = 20(4)

Distribute

7x + 40 - 2x = 80

Combine like terms

5x + 40 = 80

Subtract 40 from both sides

5x = 40

Divide both sides by 5

x = 8 gallons at $7

20 - x = 12 gallons at $2

Related Questions

Which of the following statements concerning the linear correlation coefficient are true?

I: If the linear correlation coefficient for two variables is zero, then there is no relationship between the variables.
II: If the slope of the regression line is negative, then the linear correlation coefficient is negative.
III: The value of the linear correlation coefficient always lies between –1 and 1.
IV: A linear correlation coefficient of 0.62 suggests a stronger linear relationship than a linear correlation coefficient of –0.82.

I and IV

II and III

I and II

III and IV

Answers

Answer:

I and IV... ig (:

I and IV because i’m very extremely intelligent

Which equation has a solution of s = 3/4?

Answers

Answer:

the answer is that you have to follow these rules.

Step-by-step explanation:

1. Simplify each side of the equation by removing parentheses and combining like terms.

2. Use addition or subtraction to isolate the variable term on one side of the equation.

last but not least

3. Use multiplication or division to solve for the variable.

(4,-3) hope it helps

HELP HELP HELP HELP!!!!

Answers

Answer:

99 x 29 = 2871

Step-by-step explanation:

he could multiply 29 by 99

99x29=2871 because I’m right i always am

i can't even do that tho im not verified

Answers

h that happens. to me

Step-by-step explanation:

all the time

Answer:

I'm not verified....

Step-by-step explanation:

Deleting all user's homework

please help me with this math :)

Answers

Answer:

The X is equal to 1.75

Step-by-step explanation:

3.5X2.25=7.875

14/7.875=1.75

Answer: x=1.75

Step-by-step explanation:

rearrange the term: 3.5 (2.25 + x) = 14

the new term: 3.5 (x + 2.25) = 14

Combine multiplied terms into a single fraction, then distribute.  

x = 1.75

Help me wit dis question I’ll give you brainliest

Answers

Answer:

6

Step-by-step explanation:

Answer:

She'll find 6 items in 3/4 of an hour.

Step-by-step explanation:

First, change 3/4 to 6/8. Then, do you 6/8 divided by 1/8 to get your answer of 6 items in 3/4 of an hour.

please help. I'll give you extra points.

Answers

Answer:

See below

Step-by-step explanation:

Part A: For the current year, we notice that the price of corn is directly proportional to the number of bushels at a rate of $8 per bushel. We know this because 2 bushels * $8 = $16, 4 bushels * $8 = $32, and so on.

Part B: The rate for the previous year is $6 per bushel, so the current year rate is $2 more than the rate for the previous year

Wow great answer!! Keep going

Answer 3-12 please, thank you!

Answers

The answer is nine, 9 + 3 = ( equals ) 12 so weather subtract, or adding, you will get the same answer <3

Please help me! I will give brainliest to best answer!

Answers

Answer:

Both numerator and denominator can be divided by 3.

Explanation:

Find the HCF of 18 and 21. Now, it's 3.

Answer:

3

Step-by-step explanation:

Both of them are in the table of 3 so 18/3 = 6 and 21/3 = 7

So the fraction will be = 6/7

That's your answer

This is the backside from the other photo I need extra help with this

Answers

Answer:

No LED lights pls, it makes it harder to view and consequently harder to answer.

can you turn off the leds it makes harder to read

Help please I will give yu brainlyest if it’s correct

Answers

Answer:

Less than 14.05

Step-by-step explanation:

Answer:

Just answering so the other person can get brainliest

Step-by-step explanation:

it's systems of linear equations btw

Answers

Each child ticket is 7$ and senior is 5$ and is this question from a packet? Bec I found the whole answer key online and I can send it to u if u want

An elevator ascends at a rate of 29.6 feet per second. If a building is 1,450 feet tall,
about how long would it take for the elevator to travel from the ground floor to the roof?
A. 0.49 minute
B. 0.82 minute
C. 4.9 minutes
D. 8.2 minutes

Answers

The correct answe would be D I think it is
The answer is D 8.2 minutes

What is a possible reason for choosing the survey question "If you had one superpower what would it be"

Answers

You can say to time travel as you can go back in time to that question and get more powers.

Or.

Say to have unlimited wishes so that you can get any power or thing you ever wanted.
You can say invisibility or super speed are reasonable answers.

5. Using the equation y=2x+5, construct a table and graph the line

Answers

Step-by-step explanation:

What you are going to do is for each value of x (which is the value to the right on the table) you will find the Y value.

So for X = 0

y = 2(0)+5 = 5

x = 1

y = 2(1)+5 = 7

x = 3

y = 2(3)+5 = 11

x = 5

y = 2(5)+5 = 15

x = 10

y = 2(10)+5 = 25

Now for what you do is place the correspanding value into the graph.

(x,y) = (0,5), (1,7), (3,11),(5,15),(10,25)

Answer: See the graph below.

Step-by-step explanation:

What is the smaller of the numbers 1 and -10/3

Answers

-10/3 is smaller and 1 is bigger.

10.3 is the answer to your question

Simplify 1/6(12x+24)+4x

Answers

Answer:

6x+4

Step-by-step explanation:

1/6(12x+24)+4x

Multiply 1/6 to all numbers in parentheses.

2x+4+4x

Combine all like terms.

6x+4

what is 55x63x95x34 help mee

Answers

Answer:

11191950

Step-by-step explanation:

Multiple 55 by 63 which gets you 3456 then you multiplay it again with 95 giving you 329175 and now finally you multiply 34 to it to get 11191950.

It would be 11,191,950

Which statement below is TRUE about |-2| and |-5|?

|-5| is greater than |-2|

|-2| is greater than the |-5|

neither statement is true

Answers

|-5| is greater than |-2| because |-5| is 5 and |-2| is 2 and 5 is greater than 2.

The answer is |-5| is greater than |-2|.

Solve the inequality and graph the solution : k/-1 > 4

Answers

Answer:

k<-4

Step-by-step explanation:

8,869 divided by 3= and can yall help me with other question im gonna post

Answers

Answer:

2956.33333333

................................

Answer:

2956.33333333

Step-by-step explanation:

BRAINLIEST?

Hellppp meeeeeee PLEASEEEEE can y’all help

Answers

Answer:

90

Step-by-step explanation:

11 + 34=45

45+45=90 your welcome

90 is going to be your answer

Which number line shows the solution set for StartAbsoluteValue 2 p minus 4 EndAbsoluteValue greater-than-or-equal-to 6?
A number line going from negative 6 to positive 6. Closed circles are at negative 5 and positive 5. Everything between the points is shaded.
A number line going from negative 1 to positive 8. Closed circles are at negative 1 and positive 5. Everything to the left of negative 1 and to the right of positive 5 is shaded.
A number line going from negative 6 to positive 6. Closed circles are at negative 5 and positive 5. Everything to the left of negative 5 and to the right of positive 5 is shaded.
A number line going from negative 1 to positive 8. Closed circles are at negative 1 and positive 5. Everything between the points is shaded.

Answers

Answer:

can u add a picture?

Step-by-step explanation:

C is the midpoint of chord AB and D is the midpoint of arc AB.Given that AB=36 unit and CD=6 unit then What is the radius of circle?

Answers

Answer:

By power of a point, AC⋅CB=DC⋅CE. That is, 12⋅12=6⋅(2R–6).

Then, R=15.

In a video game, a guppy that escapes a net turns into three goldfish. Each goldfish can turn into two betta fish. Each betta fish can turn into two angelfish. Enter and evaluate an expression for the number of angelfish that can be formed from one guppy.

What is an expression?

Answers

an expression is an equation without an equal sign

for example:

equation- 2+2=4

expression- 2+2

Solve for b.
3 < b/-4 + 4

61 points

Answers

Answer: b < 4

Step-by-step explanation:

[tex]\\ \sf\longmapsto 3<b/-4+4[/tex]

[tex]\\ \sf\longmapsto 3<b-16/-4[/tex]

[tex]\\ \sf\longmapsto -12<b-16[/tex]

[tex]\\ \sf\longmapsto b>4[/tex]

Done

Alex had 12 gumball machines. Each had about 47 gumballs.



Using compatible numbers, what is the best estimate for the number of gumballs Alex had?

Alex had about ______ Gumballs

DO I do Multiplication or whattt

Answers

Answer:

The answer would be 600 gumballs.

Step-by-step explanation:

The first step that you would do to solve this problem is multiply 12 by 47, which would give you 564.

The second step that you would do is round it. 564 rounded to the hundredths place is 600.

Therefore, your answer is 600.

Answer: 500

Step-by-step explanation:

its 500 round 47 u get 50 then round 12 u get 10 50 . 10=500

Create a proportion from the given set of numbers:

Example: 1, 6, 2, 3
Proportion is 1:2=3:6

25) 3, 6, 7, 14
Proportion is _________________

26) 2, 6, 5, 15
Proportion is _________________

27) 7, 2, 14, 4
Proportion is _________________

28) 2, 2, 1, 4
Proportion is _________________

29) 10, 5, 8, 4
Proportion is _________________

30) 3, 12, 8, 2
Proportion is _________________

Answers

If you do 30 > then it be 320

Answer:

so from the example heres what i think is correct  25) proportion is 3:7= 14:6      26) 2:5=15:2     27) 7:14=4:2      28) 2:1=4:2   29) 10:8=4:5       30) 3:8= 2:12

Step-by-step explanation:

Write an equation in slope intercept form for the graph of the line.

Answers

Y= 2x + 3 is the answer

Answer:

y = mx + b

Step-by-step explanation:

Danielle earns an 8.25% commission on everything she sells at the electronics store where she works. She also earns a base salary of $675 per week. How much did she earn last week if she sold $4,200 in electronics merchandise? Round your intermediate calculations and answer to the nearest cent.

Answers

Answer:

$12381.82

Step-by-step explanation:

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