Mathematics Middle School

Find the constant of proportionality of the table and express it in an equation

Answers

Answer 1

Answer:

The constant of proportionality is 2.5. This can be expressed as (cups of sugar) * 2.5 = cups of flour

Step-by-step explanation:

The constant of proportionality is y/x. Since flour comes second, we'll plug flour in for y here.

5/2 = 2.5

15/6 = 2.5

20/8 = 2.5

The constant of proportionality is 2.5. This can be expressed as (cups of sugar) * 2.5 = cups of flour

Answer 2

It’s 2.5, lolookskkkdsk

Related Questions

Please help! thank you so much! :)

Answers

It’s either A or B
6^2= 36
8^2= 64
36+64=100

Answer:

c is correct

Step-by-step explanation:

Use the distributive property to expand 0.05(50 + 40).

Answers

Answer:

4.5

Step-by-step explanation:

0.05(50+40) = 0.05 x 50 + 0.05 x 40 = 2.5 + 2 = 4.5

i hope this helped, and if it did, please mark this as brainliest! thanks

Your answer is 4.5

Explanation-

.05•50= 2.5

.05•40= 2

Add them together and get 4.5

Which property was used to simplify the expression?

distributive property
commutative property
associative property
inverse property

Answers

Inverse Property, I am pretty sure. Not sure though.

i do believe it’s Inverse property, sorry if that’s incorrect

Olivia is making cupcakes for her class. She needs to make 15 cupcakes in all. Each cupcake requires 1/3 cup of batter and 1/4 cup of icing.

How many cups of batter will Olivia need in order to make all of the cupcakes?

How many cups of icing will Olivia need?

Answers

Answer:5 cups of batter and 3 3/4 cups of icing

Step-by-step explanation:

15× 1/3= 5 cups batter and 15×1/4= 3 3/4

pls help 20 points

Adult tickets for a movie cost $8 and children's tickets cost $6. If two adults and
three children go to the movies, how much will they pay?

Answers

8x2=16
6x3=18
16+18= 34

answer: 34$

Answer: 34

Step-by-step explanation: 8 times 2 is 16 and 6 times 3 is 18. You add 16+18 and the answer is 34

What is the equation of this line in standard form?

A. 6x−7y=17

B.11x−6y=13

C.6x−11y=13

D.6x−11y=−13

Answers

Answer:

A. 6x- 7y= 17

Step-by-step explanation:

It is A. 6x- 7y=17

Hope this helps

Factor the expression completely:
5 / 6 y - 25 / 42

Answers

5y 25
--- - ---
6 42

Find the percent of the number.

50% of 70 is
.

Question 2
Explain your method.

Answers

Answer:

Step-by-step explanation:

Using proportions, you are correct:

70/x = 100/50

cross multiply

100x = 3500

divide both sides by 100 to get your answer.

35 because 70\2= 35.

What is the y-intercept of the graph?

Answers

(0, -5) is the y intercept

An irregular polygon is shown below:

The area of the irregular polygon is ____ square units.

Answers

The answer is 26 square units

Answer:

26 Units Squared

Step-by-step explanation:

We can split the polygon into different sections the first section 4 units * 4 units = 16 units squared then by analyzing the other section we can find it is 5 units by 2 units = 10 units added together is 26 Units Squared

A number cube has sides numbered 1 through 6. The probability of rolling a 2 is 1/6.

What is the probability of not rolling a 2?

Enter your answer as a fraction, in simplest form, in the box.

Answers

5/6 explanation: if the probability of rolling a two is 1/6 then the probability of not rolling a two is 5/6, 6-1=5

6&7 thanks for your help

Answers

great! I think that would work perfectly!

Answer:

Length = 11 1/3 ft; Width = 4 2/3 ft

Step-by-step explanation:

First question:

The length is 2 more than twice the width, so

L = 2W + 2

Second question:

2L + 2W = 32

L = 2W + 2

Since the second equation is already solved for L, we can use the substitution method. Replace L of the first equation with 2W + 2, and solve for W.

2L + 2W = 32

2(2W + 2) + 2W = 32

4W + 4 + 2W = 32

6W = 28

W = 28/6 = 14/3 = 4 2/3

L = 2W + 2 = 2(14/3) + 2 = 28/3 + 6/3 = 34/3 = 11 1/3

L = 11 1/3

W = 4 2/3

Answer: Length = 11 1/3 ft; Width = 4 2/3 ft

Please hurry, this is timed.
Profit is the difference between revenue and cost. The revenue, in dollars, of a company that manufactures televisions can be modeled by the polynomial 3x2 + 180x. The cost, in dollars, of producing the televisions can be modeled by 3x2 – 160x + 300. The variable x is the number of televisions sold.

If 150 televisions are sold, what is the profit?

A: $2,700
B: $6,000
C: $50,700
D: $51,300

Answers

Answer:

Step-by-step explanation:

Answer:

C: 50,700

Step-by-step explanation:

Its right my dudes

An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model the situation.

What are the slope and Y-intercept?

Answers

Answer:

Step-by-step explanation:

Answer:

Slope: -2000

Y-intercept: 30000

Equation: Y=-2,000x+30,000

Step-by-step explanation:

The pane starts at 30,000 feet, giving up an y intercept or a starting point. Since the plan is descending, you know the slop will be negative.

What is x=17+3
What does x equals
Ps hiii Wana be friends

Answers

The answer is 20 I think

Answer:

Wouldn't it be 20?

r-r-r-roll up to the party in my crazy pink wig, but I can't get through the door bc my booties too big

please help this is also very urgent

Answers

I think The answer is c

What you need to do is make them all into fractions and divide top by bottom i think! Sorry if I’m wrong

Which statement compares the two numbers correctly?

0.799 ________ 0.8

0.799 > 0.8
0.799 = 0.8
0.799 < 0.8
0.8 < 0.799

Answers

Answer: 0.8 <0.799

Step-by-step explanation:

Just did the same quiz

A box contains 100 colored chips; some are pink and some are blue. Milton chooses a chip at random, records the color, and places it back in the bag. Milton has recorded 12 pink chips and 18 blue chips. Using these results, what is the predicted number of pink chips in the box? (1 point)

30
40
82
88
9.
(06.02 HC)
A box contains 100 colored chips; some are yellow and some are green. John chooses a chip at random, records the color, and places it back in the bag. John has recorded 57 yellow chips and 19 green chips. Using these results, what is the predicted number of green chips in the box? (1 point)

25
43
76
81
10.
(06.05 MC)
A paper cup is dropped and its landing position is recorded. The cup can land on the side, on the open end, or on the closed end. The results of 20 trials are shown in the table below:

A chart shows tally marks. Main title for the chart is Paper Cup Experiment. The title for the second column is Number of times occurred. The tally mark corresponding to open shows a set of 4 vertical lines cut by a slanting line. The tally mark corresponding to closed shows a set of 4 vertical lines cut by a slanting line and a set of 3 vertical lines. The tally mark corresponding to side shows a set of 4 vertical lines cut by a slanting line and a set of 2 vertical lines.
Based on the table, which of the following best compares the experimental probability of the cup landing on its open end with the experimental probability of the cup landing on its closed end? (1 point)

The probabilities are equal.
The probability of landing on the open end is greater.
The probability of landing on the closed end is greater.
No conclusion can be made.
11.
(06.05 HC)
Ted tossed a coin several times and recorded the number of heads and tails in the following table:

Coin Experiment
Side of Coin Number of
Tosses
Heads 18
Tails 22

What is the experimental probability of getting heads? (1 point)

0.18
0.22
0.35
0.45
12.
(06.05 MC)
Zen rolled a fair six-sided die 12 times. The table below shows the number of times each number was rolled:

Number Cube Experiment
Number onthe Cube Number ofTimesAppeared
1 0
2 3
3 1
4 2
5 2
6 4

According to the results in the chart, what is the experimental probability of getting a number greater than 3 on the die? (1 point)

3 over 12
6 over 12
9 over 12
8 over 12

Answers

The approximate number of pink chips is 40. Here's why: what you need to do is set up the problem as shown below. 12 goes above 30 because you have to know what the total number of chips chosen is in order to relate it to 100 chips. From there, all you have to do is cross-multiply and divide (or my middle school teacher used to call it fish.... I'll explain why). First you are going to draw a line from the 100 to the 12 and multiply them. then you are going to curve the line that you will draw from the 12 to the 30 and divide the product of 12 and 100 by 30. Then you will draw a line from the 30 to the X meaning that the quotient that you find from the product of 120 and 100 divided by 30 equals X. Hope that helps.

12 x

30 100

Answer:

this is put in wrong

Step-by-step explanation:

Simplify the expression: 1/2 (6y – 8) – (12y – 16) + 7

Answers

Answer:

-9y+19

Step-by-step explanation:

Answer: -9y+19

Explanation:

Factor 2 from the expression

When there is a in front of an expression in parentheses, change the sign of each term in the expression

Reduce the numbers with the greatest common factor 2

Remove unnecessary parentheses

Combine like terms

Calculate the sum or difference

Please help. . . . . .

Answers

16...........................,.,

The answer is 20

Steps
2x^2 - y X=3 Y= -2
2(3)^2 - (-2) 3 * 3 = 9
2(9) + 2
18 + 2
= 20

Shelly has a bag containing three balls : one red, one yellow, and one green. All balls are likely to be chosen. Shelly will choose one ball without looking in the bag. What is the probability that Shelly will choose the yellow ball out of the bag?

A. 3/3
B. 3/1
C. 1/3
D. 2/3

Answers

The answer is c. Since she has three balls and she is going to chose one is will be 1/3
Hope this helps

C. She has three balls total

4,902 × 0.001 is the same as 4,902 ÷ 10 to the power of 3
True or False?

Answers

Answer:

False

Step-by-step explanation:

4902x0.001 = 4.902

4902/10 = 490.2

490.2^3 does not equal 4.902

PLZZ HELLLLLPPPPievjp

Answers

She can ride a bike 7 miles per hour

Please help me?

Michelle has a total debt of $28. She is trying to pay back $2 each week for the next 3 weeks. If Michelle is successful, which amount will represent the change in the amount of her debt?

Answers

Answer:

$22

Step-by-step explanation:

She gives 2 dollars per week for 3 weeks.

If she gives back 2 dollars each 3 weeks, we would solve for 2 x 3

2 x 3 = 6

28 - 6 = 22

$22 dollars represents her amount of debt.

Answer:

-6

Step-by-step explanation:

$28

$2/week

$28 - (2x3) = $22

$22 - $28 = -$6

Can someone help me ASAP! Ill give you brainliest!
Im horrible in this skill, and it has to be correct :-)
Plz and thank you!

Answers

i think the answer for this is 265 :)

Please answer if you know the answer.
Find x and give reasons.

Answers

the answer is 30 have a good day

The value of a share of stock decreases in value at a rate of $1.40 per hour during the first 3.5 hours of trading. Enter and solve an equation to find the decrease in the value of the share of stock during that time. Let x represent the decrease in value of the share of stock during 3.5 hours.

The equation to find the decrease in the value of the share of stock is x / _____ = _______

The decrease in value of the share of stock during 3.5 hours was $________

Answers

Answer:

x/3.5h = -$1.4

So, x = -$1.4 * 3.5h

= -$4.9

Step-by-step explanation:

Since your losing $1.4 every hour, the 1.4 is supposed to negative.

Also, since your losing that amount of money for 3.5 hours, we are trying to find the total of how much money is lost in the 3.5 hours. To do this, we have to do x/3.5h = -$1.4. But since you can't do x/3.5, we have to do inverse operation. When you divide 3.5 hours to the other side of the equation it becomes multiplication. So you do -$1.4 times 3.5 hours

and get -$4.9.

can some one help me i have no idea what this is

Answers

Answer:

b=-25

Step-by-step explanation:

10= -2/5b

------ -------

-2/5 -2/5b

b=-25

Check:

-2/5(-25)=10

10=10

Answer:

b=-25

Step-by-step explanation:

Find the x-intercepts of the parabola y = x^2 - 5x + 3.

Answers

Answer:

x-intercepts are (6.8 , 0) and (1.4, 0).

I will award brainliest here

Answers

Answer:

2ND ONE

Step-by-step explanation:

I think it’s the 2nd one

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