Tell whether the ratios form a proportion.

1 to 3 and 7 to 21

Answers

Answer 1

Answer:

yes they form a proportion

Step-by-step explanation:

1 to 3 and 7 to 21 are equal

we can check this by multiplying each number in the 1 to 3 ratio by 7 to make it equal with the other ratio, 7 to 21.

(sorry if this is confusing but I hope it helped)


Related Questions

help me pleaseeeeeeeeeeeeee
i will give 20 points

Answers

Answer:2/7, 3/7, 6/7

Step-by-step explanation:

Answer:

2/7 , 3/7 , 6/7

Step-by-step explanation:

There are two solutions to the equation 22 = 2.
Select all of the statements that describe the positive solution of the equation.
The positive solution is 1.
The positive solution is a rational number.
The positive solution is an irrational number.
The positive solution is a repeating decimal.
The positive solution is a value between 0 and 1.
The positive solution is a value between 1 and 2.
Helppppp MEEEE

Answers

Answer:

I belive is the 2nd answer choice because it seems like is a rational number

its iready help pls im give brainiest

Answers

Answer:

The answer is 0. those types of lines NEVER touch

A cylinder has a volume of 3201 cubic inches and a height of 5 inches.
What is the radius of the cylinder?

Answers

Answer:

r≈14.28in

h Height

5

in

V Volume

3201

in³

Using the formula

V=πr2h

Solving forr

r=V

πh=3201

π·5≈14.27522in

Pls help due ASAP
Show workings

Answers

Answer:

What is the question/questions please

Answer:

x=5

Step-by-step explanation:

What are 2 ways i could solve 7-(4p+3)=-3(p+2)-(2p+3)

Answers

Answer:

Simplifying

7 + -1(4p + 3) = -3(p + 2) + -1(2P + 3)

Reorder the terms:

7 + -1(3 + 4p) = -3(p + 2) + -1(2P + 3)

7 + (3 * -1 + 4p * -1) = -3(p + 2) + -1(2P + 3)

7 + (-3 + -4p) = -3(p + 2) + -1(2P + 3)

Combine like terms: 7 + -3 = 4

4 + -4p = -3(p + 2) + -1(2P + 3)

Reorder the terms:

4 + -4p = -3(2 + p) + -1(2P + 3)

4 + -4p = (2 * -3 + p * -3) + -1(2P + 3)

4 + -4p = (-6 + -3p) + -1(2P + 3)

Reorder the terms:

4 + -4p = -6 + -3p + -1(3 + 2P)

4 + -4p = -6 + -3p + (3 * -1 + 2P * -1)

4 + -4p = -6 + -3p + (-3 + -2P)

Reorder the terms:

4 + -4p = -6 + -3 + -2P + -3p

Combine like terms: -6 + -3 = -9

4 + -4p = -9 + -2P + -3p

Solving

4 + -4p = -9 + -2P + -3p

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '3p' to each side of the equation.

4 + -4p + 3p = -9 + -2P + -3p + 3p

Combine like terms: -4p + 3p = -1p

4 + -1p = -9 + -2P + -3p + 3p

Combine like terms: -3p + 3p = 0

4 + -1p = -9 + -2P + 0

4 + -1p = -9 + -2P

Add '-4' to each side of the equation.

4 + -4 + -1p = -9 + -4 + -2P

Combine like terms: 4 + -4 = 0

0 + -1p = -9 + -4 + -2P

-1p = -9 + -4 + -2P

Combine like terms: -9 + -4 = -13

-1p = -13 + -2P

Divide each side by '-1'.

p = 13 + 2P

Simplifying

p = 13 + 2P

Step-by-step explanation:

American Indian resistance in the Ohio River Valley ended with
A.the Treaty of Greenville.
B.Tecumseh’s death.
C.the Battle of Tippecanoe.
D.Sequoyah’s death.

please dont delete i need help

Answers

Answer:

American settlers and American Indians often clashed as settlement spread across the West during that era.

Step-by-step explanation:

American Indian resistance in the Ohio River Valley ended with.

Answer:

A.) The Treaty of Greenville

Step-by-step explanation:

I hope the answer is correct, if not, I'm very sorry ♡

A youth league soccer team has 20 students who play the defender positions and 23 students who who play midfielders positions. Write a ratio of students who play defender positions to the total number of students who play defender or midfielder positions.

Answers

Answer:

20:43

Step-by-step explanation:

2x-1=4
-2x+y=8
Find the value of x

Answers

Answer:

Step-by-step explanation:

2x=5

x=2.5

Z varies jointly as x and y. If z=3 when x=3 and y=15, find z when x=6 and y=9

Answers

Answer: 6

Step-by-step explanation:

Amanda Elementary School has 4 sixth grade classrooms. If each classroom can hold 30 kids, how many sixth graders can they hold in all?

Answers

Answer:

I'm not sure what you're trying to ask. Is there a total number of kids?

Answer: There are 120 sixth graders.

Step-by-step explanation.

Just multiply 30 times 4

PLZ ANYONE help me PLZHELP ME ITS DUE RIGHT NOW

Answers

AH and GB are congruent
It would be sas side angle side

Pleasee pleeeaassee help. TY

Answers

the first graph because its decreasing

p + 2q = 11
2p + q = 10​

Answers

Answer:

p = 3

q = 4

Step-by-step explanation:

p + 2q  = 11          --------------------(I)

       p = 11 - 2q

2p + q = 10         --------------------(II)

Substitute p = 11 -2q in equation (II)

2(11 - 2q) + q =10

2*11 - 2q *2 + q = 10

22 - 4q + q = 10

  22 - 3q    = 10

         -3q   = 10 - 22

        -3q    = -12

              q = -12/-3

 q = 4

Plugin q = 4 in equation (I)

p + 2q = 11

p + 2*4  = 11

p + 8 = 11

      p = 11 - 8

      p = 3

Mr. Johnson bought flowers to plant in flats in his yard. Each flat has 6 yellow flowers and 8 red flowers. Simplify the expression 6f+8f

Answers

Answer:

the simplified expression is 14f.

Step-by-step explanation:

Given expression;

6f + 8f

This expression is simplified by adding the two terms together since they are like terms.

6f + 8f  = 14f

Therefore, the simplified expression is 14f.

30 POINTS Please help! Triangle MNO is an isosceles triangle in which only one angle measures 120º. What is the angle measure of one of the two congruent angles?

What is X:?

Answers

Answer:

One, or both the congruent angles measure 30 degrees

Step-by-step explanation:

180 - 120 = 60

60 / 2 = 30

30 + 30 + 120 = 180

Yes

Answer:

30°

Step-by-step explanation:

180-120=60

60/2 = 30

Write 2.4 as a mixed number and as an improper fraction.
Write your answers in simplest form.

Answers

Answer:

Step-by-step explanation:

24/10, 2 4/10 , 12/5

I don't need the answer I NEED someone to explain this to me, I'm really struggling with this, and can someone walk me through this problem. The first number is x to the second power.
Factor the following polynomial completely
x^2-3x-10

Answers

Answer:

I hope it will helps u

Step-by-step explanation:

As given

x²-3x-10

Now according to the one of the rule of factorization ,

we have to find such two values whose product becomes equal to the

"product of first and last term " and if we sum those numbers it should be equal to the "middle term of it".

so such numbers are   -5x and +2x

if we add or multiply them we get the above

as  adding    -5x+2x=-3x  (middle term)

also multiplying   -5x*2x=-10x²  (product of 1st and last term)

so now , we can write as,

x²-3x-10

=x²-5x+2x-10

now making groups of 2 terms,

=(x²-5x)+(2x-10)

now common

=x(x-5)+2(x-5)

now common(x-5)

=(x-5)(x+2)   This is the required factors.....

deb and luke go to the pi-rate entertainment store to purchase cds (c) and dvds (d). deb buys 3 dvds and 2 cds for $63 (before sales tax) at the same item prices, luke pays $46 for 1 dvd and 4 cds (before sales tax). write and solve a system of equations to determine the cost of 1 cd and dvd

Answers

We are given here the individual costs of DVD and CD as well as the total sales and the number of items sold on one day. To solve the number of DVDs and CDs sold each, we devise two independent linear equations:

(1) x + y = 39

(2) 4x + 7y = 204

x- number of DVDs; y - number of CDs

solving, x= 23 DVDs

Here's what we know:
D = 2C (A DVD has the same cost as 2 CDs)
2D + 2C = 45

Since we have a value for D, we can put that into our equation:
2(2C) + 2C = 45
4C + 2C = 45
6C = 45
C = 7.50

So a CD costs $7.50

Simplify 2x/5 divided by 3/x

Answers

Answer:

2x^2/15.

Step-by-step explanation:

2x /5 /  3/x     Invert the 3/x and multiply:

= 2x/5 * x/3

= 2x^2/15.

The area of a rectangle is given by the expression XP-4x*+5x-2. The length of one side
of the rectangle is represented by the expression x-2. Which expression represents the
length of the other side?
1.

Answers

Answer:

Step-by-step explanation:

x2 + 5x + 4  (the area of the rectangle)

 

x + 2   (the length of one side)

 

(x2 + 5x + 4)/(x + 2)

 

do a division of this polynomial and you get;    (x + 3) - 2/(x+2), you could leave the answer like this or you could simplify by using the LCM method

 

= [(x+2)(x+3) - 2]/(x + 2)

 

checking; (x + 2)*[(x+2)(x+3) - 2]/(x + 2) = (x+2)(x+3) - 2 = x2 +5x + 6 - 2 = x2 +5x + 4 (proven)

Identify the value of a if
y= a (x - 2) (2x + 4)
and the point (4,8) is on the graph.
Pls help fast

Answers

Answer:

a=1/3

Step-by-step explanation:

from the point on the graph

x=4 and y=8

substitute them into the equation:

y=a(x-2) (2x+4)

you will get

8=a(4-2) (2(4)+4)

8=a(2) (8+4)

8=a(2) (12)

8=2a×12

8=24a

divide both sides by 24

8/24=24a/24

1/3=a or a=1/3

Does Anyone know this answer:)

Answers

Answer: x = 10

Step-by-step explanation:

8x = 6x +20

2x = 20

X = 10

Check:

8(10) = 6(10) + 20

80 = 60 + 20

80 = 80

The polygons are similar. The area of one polygon is given. Find the area of the other polygon.
4 cm
12 cm
A = 10 cm
Area =
cm2

Answers

Answer:

90 cm²

Step-by-step explanation:

Given that both triangles are similar, it follows that the ratio of their area equals the square of their corresponding sides.

Let the area of the other triangle be x. Therefore:

[tex] \frac{10}{x} = \frac{4^2}{12^2} [/tex]

[tex] \frac{10}{x} = \frac{16}{144} [/tex]

Cross multiply

[tex] 10*144 = 16*x [/tex]

[tex] 1440 = 16x [/tex]

Divide both sides by 16

90 = x

Area of the other polygon = 90 cm²

Answer:

Answer is 90

Step-by-step explanation:

I had this homework and got it right

Find the measure of BC

Answers

Answer:

9

Step-by-step explanation:

im pretty sure the snawer is 9 sorry if im wrong

I think the answer is 9

Students were selected at random in a local high school to see if there was an association between gender and
participation in extracurricular activities. What percent of females participate in extracurricular activities?
(1) 25%
(3) 44%
(2) 53%
(4) 72%
Extracurricular
No Extracurricular
Total
Gender
Male Female Total
24
19 43
16 17 33
40 36 76

Answers

Answer:  53%

===========================================================

Explanation:

The question asks "What percent of females participate in extracurricular activities?" This means we only focus on the second column. There are 36 women, and of this total, 19 are in extracurricular activities.

Dividing the two values leads to approximately 19/36 = 0.52777 which rounds to 0.53

Then we move the decimal to the right two spots to get 53%

Roughly 53% of the female students participate in extracurricular activities.

Solve for y. y - 4 = -3(x - 3)​

Answers

Answer:

y=-3x+13

Step-by-step explanation:

y- 4 = -3(x - 3)​

y-4=-3x+9

y=-3x+13

Answer:

y-4=-3x+9

3x+y-13=0 this is correct answer

Which of the following best describes the graph above?
A.
neither a relation nor a function
B.
function only
C.
relation only
D.
both a relation and a function

Answers

Answer:

Option C

Step-by-step explanation:

To test a graph whether it represents a function or relation we conduct a vertical line graph.

If the vertical line intersect the graph at two different points, graph represents a relation only.

By analyzing the given graph with the vertical line test,

Since, a vertical line (x = -4) intersect the graph at two points (y = -1 and y = 5),

Given graph represents a relation only.

Option C is the answer.

Theo bought two hot dogs and two sodas for 4.00. At the same concession stand, Vicky bought three hot dogs and a soda for $4.50. What is the price of a hot dog at the concession stand?

А. $0.75
B. $1.00
C. $1.25
D. This question cannot be answered without more information.

Answers

Answer:

A. $0.75

Step-by-step explanation:

0.75×2=1.50 (1.50 price of 2 hotdogs)

4-1.50= 2.50 (2.50 is the price of 2 sodas)

1.50 + 2.50= $4

What is the quotient of negative 9 divided by 3

Answers

Answer:

-3

Step-by-step explanation:

The equation would first look like 9/-3

When you are dividing negativ numbers a negative divided by a positive is always a negative so 9/-3 is -3

It is -3.

If you originally do 9 divided by 3, you get 3, but then add the negative, so -3.
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