PROPROTIONS
In a bag of marbles, the ratio of the number of blue to red to white is 13:2:6. If the number of blue marbles minus the number of white marbles is 21, how many red marbles are there?

Answer: There are 6 red marbles

Step-by-step explanation:

13 - 6 = 7

21/7 = 3

3 x 2 = 6

To check the answer:

13 x 3 = 39

6 x 3 = 18

39 - 18 = 21

Answer:

6

Step-by-step explanation:

Blue = 13x

Red = 2x

White = 6x

Now, they have given one more info:

Blue - White = 21

So, 13x - 6x = 21

7x = 21

x = 3

∴ Now, Blue = 13*3 = 39

Red = 2*3 = 6

White = 6*3 = 18

Total = 63

Hope it helped. Pls mark me the BRAINLIEST!

During soccer practice, the goalie blocked 72% of the shots attempted by the opponents. If the goalie blocked a total of 18 shots, how many total shots were attempted?

The graph shows the number of miles you and a friend run each week while training for a race.

Your friend runs __ more miles than you each week.

Rosie had 10 boxes of drawing pins.
She counted the number of drawing pins in each box.

The table gives information about her results.


Work out the mean number of drawing pins in a box.

Elizabeth is thinking of a two-digit number. When the tens digit is subtracted from the ones digit, the difference is 2. One-fifth of the number is 1 less than the sun of the digits. What is the number?

two less than the quotient of a number and four, increased by ten;

evaluate when m = 12

What is the circumference of a circle with a radius of 11 cm? (Use pi = 3.24)
Circumference = 2piR

How do we find the basic probability of an event?

11. Sanjay read 56 pages of his book this weekend. This is 35% of the pages in the book. How many pages are in Sanjay’s book?

Write an expression to represent "nine minus the quotient of two and a number x." (use / for division)

And give a reason why?

Simplify 7x times (2x^4)^3
Middle school
Show work on how you got your _ Answer
Please help its for a test due tomorrow
A.42x^12
B.14x^13
C.42x^13
D. 56x^13

1. The surface area of the prism is square units. All measurements in the image below are in units. (Input whole number only.)

A triangular prism is shown with 2 right triangular sides having legs 8 and 6 and hypotenuse 10. The length of the prism is 7.5


2. A solid is composed of squares and equilateral triangles. Its net is shown below:

A triangular prism and its net are shown. The net is three squares with side length 7 units. Attached above and below the middle square are equal sized triangles.

The area of each triangle is 21 square units. The surface area of the triangular prism is square units. (Input whole number only)


3. A polygon is shown:

A polygon MNOPQR is shown. The top vertex on the left is labeled M, and rest of the vertices are labeled clockwise starting from the top left vertex labeled, M. The side MN is parallel to side QR. The side MR is parallel to side PQ. The side MN is labeled as 3 units. The side QR is labeled as 9 units. The side MR is labeled as 3 units, and the side NO is labeled as 2 units.

The area of polygon MNOPQR = Area of a rectangle that is 9 square units + Area of a rectangle that is square units. (Input only whole numbers, such as 8.)


3. On a coordinate grid, the coordinates of vertices P and Q for Polygon PQRS are P(1, 3) and Q(−2, 3). What is the length of Side PQ of the polygon?
a
2 units
b
3 units
c
4 units
d
6 units


4. The length of a rectangle is shown below:

On a coordinate grid from negative 6 to positive 6 on the x-axis and on the y-axis, two points A and B are shown. The point A is on ordered pair 2, 1, and the point B is on ordered pair negative 4, 1. A straight line joins the points A and B.

If the area of the rectangle to be drawn is 18 square units, where should points C and D be located, if they lie vertically below the line that connects B and A, to make this rectangle? (1 point)

a
C(−4, −5), D(2, −5)
b
C(−4, −8), D(2, −8)
c
C(−4, −6), D(2, −6)
d
C(−4, −2), D(2, −2)


5. Figure ABCD has vertices A(−5, 2), B(4, 2), C(4, −5), and D(−5, −3). What is the area of Figure ABCD?

a
9 square units
b
45 square units
c
54 square units
d
122 square units

A sporting goods store manager was selling a ski set for a certain price. The manager offered the markdowns​ shown, making the​ one-day sale price of the ski set ​$326. Find the original selling price of the ski set.
PLEASE HELP ME. I DON'T UNDERSTAND HOW TO DO THIS!

HELP ASAP!!
In 2-5 (IMAGE) for each expression write an

equivalent expression. Show your steps

PLEASE HELPPPPP MEEEEE

PLEASE ANSWER ASAPPP


What is the solution for the system of linear equations shown in the graph? a coordinate grid with one line that passes through the points 0 comma 1 and 1 comma 2 and another line that passes through the points 0 comma 0 and 1 comma negative 3

why are fifteenths show in the example model?

complete the values


so basically use the numbers there as a replacement for X in each equation shown at the top of the table please do all and do it like this



-3: [answer for (3x) * 6] ; [answer for 18x]
0: [answer for (3x) * 6] ; [answer for 18x]
2: [answer for (3x) * 6] ; [answer for 18x]

please and thank you also if you dont know, the questions/table is in the
I M A G E

What is the value of a + bc when a = 7, b = 4, and c = 1/2
Thanks so much!

What is an algebraic rule y’all didn’t teach me this stuff

HELP!!!!!!
Determine if the table shows a proportional relationship.


x 36.5 23.2 63.3
y 18.25 11.6 21.1
Group of answer choices

a. Yes, it is proportional because the ratios for y over x are all equivalent to one-half.

b. Yes, it is proportional because the ratios for y over x are all equivalent to one-third.

c. No, it is not proportional because 18.25 over 36.5 is not equal to 23.2 over 11.6.

d. No, it is not proportional because 18.25 over 36.5 is not equal to 21.1 over 63.3

PROPROTIONS!!!!
In a local election, Scary Mary-Lou defeated Silly Billy-Boo by a margin of 13 to 9.
If 6446 votes were cast for these two candidates, how many votes did the winner
receive?

Evaluate 2a + 4b
if a = 10 and b = 6
Group of answer choices
4
44
24
20
Thanks!

7. Mrs. Harris picked vegetables from her garden to take to the farmers market. She picked 30 tomatoes. If 40% of all of the vegetables she picked were tomatoes, how many vegetables did she pick in all?
A. 12
B. 18
C. 75
D. 120

solve inequality and please show step by step

A triangle with a height of 8 mm and a base of 7 mm has an area of what?
Group of answer choices
56 mm squared
28 mm squared
87 mm squared
15 mm squared
Thanks so much!

6 more than half a number c is 8

Need answers asap, when answer pls put number next to it, will give brainly if theyre all right.

Which choice is equivalent to the expression below?
9(8x + 5) + 7
Group of answer choices
17x + 52
72x + 12
17x + 12
72x + 52
Thanks!

(REPOST BC I RLY NEED THE ANSWER )
The 96th annual hot dog eating contest begins at noon. you need to eat 208 hot dogs in 10 minutes to break last year's record. your best friend got caught in traffic and arrives halfway through the event
A: how many hot dogs have you consumed?

B: assuming you eat at the average rate needed, after the arrival of your best friend, how many total hot dogs will you consume in one minute? two minutes? three minutes?

C: identify and define the independent and dependent variables with their units of measure or this situation.

E:Which equation can be used to calculate the number of hot dogs consumed, given the time in minutes since 12:05 P.M.?

F:How long after 12:05 P.M. will it take you to consume 187 hot dogs?

G:When would you have consumed a total of 83 hot dogs?


When solving the equation, t will equal ___ which means I will have consumed 83 hot dogs at __ P.M.