Is 12/21:15/24 a proportion

Answers

Answer 1

Answer:

no

Step-by-step explanation:

The reason is because both side of the equation are not equal making it not proportional


Related Questions

What is 50% of 50? Use a diagram to show your work. Draw a diagram to help you.?

Answers

Answer:

25.

Step-by-step explanation:

50% = 1/2 and 1/2 of 50 is 25. so 50% is 25.

Answer:

The answer is 25.

Step-by-step explanation:

This is actually very simple but other percentages would be harder. 50% s the same as 1/2 or 0.5. all you have to do is divide 50/2 which is 25. 25 is 50% of 50.

If this helped I would appreciate it if you marked me Brainliest. Thank you and have a nice day!


Anyone please help ???? Hurry

Answers

Flipped to the right
Answer: over to the right 8 units then down 2 units

1. Solve the following equation.
-5x + 13 = 1 – 7x

Answers

-5x+13=1-7x

-5x+7x=1-13

2x=-12

2x\2=-12\2

x=-6

Find the measure of each interior and exterior angle. The diagram is not to scale.

Answers

Answer/Step-by-step explanation:

✅m<1 = 90° (right angle)

✅m<2 = 90° (<1 and <2 are supplementary, and also linear pair)

✅m<3 = 90° (<1 and <3 are supplementary, and also linear pair)

✅m<4 = 115° (vertical angles theorem)

✅m<5 + m<4 = 180° (linear pair)

m<5 + 115° = 180° (substitution)

Subtract 115 from each side

m<5 = 180 - 115

m<5 = 65°

✅m<6 = m<5 (vertical angles are congruent)

m<6 = 65° (substitution)

✅m<7 = m<1 + m<6 (exterior angle theorem)

m<7 = 90° + 65° (substitution)

m<7 = 155°

✅m<8 = 180 - m<7 (linear pair theorem)

m<8 = 180 - 155 (substitution)

m<8 = 25°

✅m<9 = m<7 (vertical angles are congruent)

m<9 = 155° (substitution)

5th grade math. Correct answer will be marked brainliest.

Answers

Answer: 1,285, 1,282, 1,278

Step-by-step explanation:

Answer:

1,285, 1,282, 1,278

Step-by-step explanation:

what is the vertex of y=x^2 +x-6?

Answers

y =(x+ 1/2 ²- 25/4 . explanation. y=x²+x=6 . complete the square.

y=x²+x+(1/2)² -6 - 1/4 . simplify

y=(x+1/2²)- 25/4 in the vertex form

hope this will help u

8. A music store bought a CD set at a cost of $20. When the store sold the CD set, the percent markup
was 140%. What is the markup?
A. $28
C. $2.80
B. $48
D. $2,800

Answers

Answer:

I think B ... not sure though

Step-by-step explanation:

tell me if I'm wrong.. TwT

What the answer to this asap

Answers

Answer:

? is 24

Step-by-step explanation:

Answer:

? = 24

Step-by-step explanation:

Since the figures are similar then the ratios of corresponding sides are equal, that is

[tex]\frac{?}{18}[/tex] = [tex]\frac{20}{15}[/tex] ( cross- multiply )

15? = 360 ( divide both sides by 15 )

? = 24

Measuring the Wind Speed of a HurricaneWhen measuring the wind speed of a hurricane or similar storm, meteorologists don’t want to get hit by flying debris. They use a measure available to them in the comfort of their TV studio. Luckily for the meteorologists, the barometric pressure is linearly related to the wind speed.Suppose scientists compared the wind speeds and barometric pressure readings of two severe storms over the Atlantic Ocean. For one of the storms, the barometric pressure was 1,000 mb (millibars), and the maximum wind speed was 100 kmh (kilometers per hour). The second had a barometric pressure of 960 mb and maximum wind speeds of 180 kmh. (a)Develop a rule that you could use to predict the wind speed given any barometric pressure.(b)Use your rule to predict the wind speed of a hurricane with a barometric pressure of 980 mb. Using what you know about linearity, explain why your prediction is reasonable. (c)Interpret the intercept for wind speed in this context (i.e., as it pertains to the weather).(d)Explain the meaning of slope in this context.

Answers

Answer:

So i found the teacher notes after hours of looking here are the exact answers so i would recommend changing the wording.

Part A: Ordered pairs in the form (mb, kmh): (1,000, 100) and (960,180) Let X be the barometric pressure and Y be the wind speed.

Slope= (180-100)

          ----------------    = -2

          (960-1000)

Formula: y=-2(x-1000)+100

Part B: y=-2(980-1000)+100=140

140 kmh is reasonable. Because 980 mb is halfway between 960 mb and 1000 mb, we should expect a wind speed halfway between 180 kmh and 100 kmh.

Part C: The wind speed intercept is (0,2100) [or (2100,0) if written that way.] This means that when brometric pressure is 0 mb, then the wind speed would be 2100 kmh. However in the context of real weather, this is an impossible situation.

Part D: The slope means that every decrease of 2 kmh in wind speed corresponds to a 1 mb increase in barometric pressure.

hoped this helped :)

what websites are similar to brainly?

Answers

Websites similar to Brainly: Quizlet and Socratic

Can I pls have brainliest :(

Answer:

Step-by-step explanation:

What is the simplest radical form of the expression? Will mark brainliest

(x4y7)34

Answers

Answer:

40

Step-by-step explanation:

Does any one want to hear a joke?

Answers

Answer:

yes pls my life is boring

Step-by-step explanation:

hi again fjdkdngiskd​

Answers

Answer:

x = -27

Step-by-step explanation:

Yea x=-27 because in division and multiplication two negatives make a positive number

The dry ingredients in a chocolate cake recipe are 2 cups of flour, 3/2 cups of sugar, and 3/4 cup of cocoa. How many cups of dry ingredients are in the cake mix?

Answers

Answer: There are four and one-fourth cups of dry ingredients are in the cake mix.

Step-by-step explanation:

Given: Quantities of dry ingredients for cake:

2 cups of flour, [tex]\dfrac32[/tex] cups of sugar, and [tex]\dfrac34[/tex] cup of cocoa.

Total cups of ingredients used = [tex]2+\dfrac32+\dfrac34[/tex]

[tex]\dfrac{2\times4+3\times2+3}{4}\\\\=\dfrac{8+6+3}{4}\\\\=\dfrac{17}{4}\\\\=\dfrac{16+1}{4}\\\\=4\dfrac14\text{ cups}[/tex]

Hence, there are four and one-fourth cups of dry ingredients are in the cake mix.

a designer is making a banner, as shown in the diagram, of width 3x and height 2x, where x is in feet. one foot of material on each side is gray, as shown below

Answers

Answer:

a) f(x) = 6x^2 - 4x

b) 80 ft²

Step-by-step explanation:

Refer to attached for full question

a.

Area formula for rectangle:

A = wh

We see the width of the white part of the banner is 3x - 2 and height is 2x

Function to define the area

f(x) = (3x - 2)*2x = 6x^2 - 4x

b.

If maximum width of white area is 10 ft, then the dimensions are:

3x - 2 = 10 ⇒ 3x = 12 ⇒ x = 4w = 10, h = 2*4 = 8A= 10*8 = 80 ft²

A lacrosse player throws a ball upward from an initial height of 7 ft with an initial velocity of 70 feet per second. Write a function in the form h(t)=-16t^2+v0t+h0 to model this situation.

Answers

Answer:

Thats what i need help with plzzx help!!

Step-by-step explanation:

This table represents the number of ounces, u, a kitten grows after w, weeks.

When graphed, all of the points in the table lie on the same line.

What is the slope and y-intercept of the line?

slope=−23, y-intercept=−0.2

slope=23, y-intercept=−0.2

slope=−32, y-intercept = 3

slope=32, y-intercept = 3

Weeks, w Weight in ounces, u

0 3

3 7.5

6 12

9 16.5

Please help!!! Look at picture


Given: -3(2x + 7) = -29 - 4x; Prove: x = 4
1. -3(2x+7)=-29-4x
2. -6x-21=-29-4x
3. -2x-21=-29
2. 17
4.
-2x=-8
3. 18
4. 19
5. 20
5.
X=4
1

Answers

Answer: 1: Given

2: Distribution

3: Subtraction

4: subtraction

5:division

Step-by-step explanation:

First to answer gets a brainliest! (everything is in the photo)

Answers

Answer:

It is ( D )

Step-by-step explanation:

Have a good day

Evaluate the expression 8n for n = 1 5/12

Answers

Answer

8n=34/3

Step-by-step explanation:

1 5/12=17/12

17/12*8/1=136/12=34/3

The length of a room is 2 1/2 feet more than its width. If the perimeter of the room is 80 feet, find its width and length?​

Answers

Answer:

The width is 20.625 and the length is 19.375

Step-by-step explanation:

Let 2 1/2 + w = length

Let w = width

Equation:

2 1/2 + w + w = 80                     Combine liked terms

2 1/2 + 2w = 80                    

-2 1/2         -2 1/2                        Subtract 2 1/2 from both sides

2w  =   77.5

÷ 2     ÷ 2                                    Divide 2 from both sides

w = 41.25

Length:

2 1/2 + 41.25 = 165/4 or 38.75

Width:

41.25

41.25/2 = 20.625

38.75/2 = 19.375

Is y = IxI a function? Explain.

Answers

Answer:

It is a function because there is one y value for any x value, and it passes the VERTICAL line test. Horizontal line test is for checking if it is one-to-one, which will tell you if the inverse is a function or not.

192 miles per 6 gallons

Answers

Is there a question?

Please help!!! Use equivalent ratios to find the unknown value​

Answers

Answer:

24/27=8/9

Step-by-step explanation:

How are you feeling about your understanding of slope and the graph of a line?
A.
I've got this down!
B.
I get most of it, but I need some practice.
C.
I kind of get it, but I still have some questions.
D.
I'm totally lost and will need help moving forward with this.

Answers

This doesn't seem like a academic question. The teacher is simply asking you how if you understand slope and graph of a line. Answer this of your own.

help pls i’ll give 70 points and mark brainlest

Answers

Answer:

2 times 4 equals eight and minus nine which will

be -1

Step-by-step explanation:

A shortcut would ensure a safer reaction. A shortcut may provide a faster reaction. A reaction with a shortcut would yield more chemical output. A reaction with a shortcut would require less chemical input.

Answers

Answer: the first one

Step-by-step explanation:

Answer:

What is the benefit of using a shortcut in a reaction between two chemicals?

A shortcut would ensure a safer reaction.

Step-by-step explanation:

Help! Plz!
What reflections map the figure onto itself?


The reflections that map the figure onto itself are Ra and Rb where a = and b =

Answers

9514 1404 393

Answer:

a = mb = n

Step-by-step explanation:

The axes of symmetry are shown and labeled m and n. Reflection across either (or both) axis of symmetry will map the figure to itself. Apparently, you want to designate those reflections as ...

  Ra . . . where a = m

  Rb . . . where b = n

Answer:

hope this pic helps enjoy

The perimeter of a triangle is 60 feet. Of the two unknown sides, the length is twice as long as the other. Find the lengths of the two unknown sides.

Answers

Answer: The length is 30, the 2 sides are 15.

Step-by-step explanation:

ASAP!! please help :( 40 POINTS​

Answers

Answer:

x ≥ 4

Step-by-step explanation:

-4(8 - 3x) ≥ 6x - 8

-32 + 12x ≥ 6x - 8

-32 + 8 ≥ 6x - 12x

-24 ≥ -6x

x ≥ 24 / 6

x ≥ 4

Write the equation in slope-intercept form through the point (4, -1) and is perpendicular to the line y = x + 2 and graph​

Answers

Answer:

The equation in slope-intercept form through the point (4, -1) and is perpendicular to the line y = x + 2 is: y=-x+3

Step-by-step explanation:

Given equation of line is:

[tex]y = x+2[/tex]

Comparing it with the general form of equation of line in slope-intercept form

[tex]y = mx+b[/tex]

The slope of given line is 1 as the co-efficient of x in the equation is 1.

When two lines are perpendicular, the product of their slopes is -1

Let m1 be the slope of new line

Then

[tex]m.m_1 = -1\\1.m_1 = -1\\m_1 = -1[/tex]

The equation of new line perpendicular to given line will be:

[tex]y = m_1x+b[/tex]

Putting the value of m1

[tex]y = -x+b[/tex]

To find the value of b, the given point will be put into the equation

So,

[tex]-1 = -(4)+b\\-1 = -4+b\\-1+4 = b\\b = 3[/tex]

The final equation of line is: y = -x+3

Hence,

The equation in slope-intercept form through the point (4, -1) and is perpendicular to the line y = x + 2 is:

[tex]y = -x+3[/tex]

Graph:(Attached)

The graph is made using the online graphing tool "Desmos". The red line in the graph represents the line y = x+2 and the blue line represents the line (y=-x+3) perpendicular to given line

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