Notes for proportional relationships can you give me notes to write down lol

Answers

Answer 1

Answer:

Step-by-step explanation:

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".


Related Questions

A triangle has sides with lengths of 3 millimeters, 4 millimeters, and 5 millimeters. Is it a right triangle?

Answers

Answer:

yes

Step-by-step explanation:

it's a rule that 3,4,5 is a right triangle but use pathagorean to prove

3x3 + 4x4 = 5x5

9+16 = 25

Can Complementary angles be supplementary?
(Give me an explanation plss!!)

Answers

For both complementary and supplementary angle...” No. For both complementary and supplementary angles, you can only have 2 angles and both of them must have positive measure. 1 or 3 or 4 angles can't be complementary or supplementary.

Answer:

go to this it should explain to u

Step-by-step explanation:

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-angles/v/complementary-and-supplementary-angles

Lilly sells 4 boxes of cookies in 60 minutes, at this rate how long will it take her to sell 10 boxes?

Answers

Answer:

150 minutes ! 60/4 multiplied by 10!

Step-by-step explanation:

Answer:

Step-by-step explanation:To find out how long it takes her to sell one box you see how many times 4 can go into 60 to get how long it takes to sell one box. So in this case it takes 15 minutes to sell one box. So you take 15 and multiply it by 10. 15 * 10= 150

60/4=15

15*10=150

So it takes 150 minutes to sell 10 boxes of cookies.

find the mode of 2,7,2,1,5,1,2​

Answers

Answer:

2

Step-by-step explanation:

Mode means the number in an array that is the most common. The most common number (mode) in this array is 2, with 3 entries.

please answer!!!! :D

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It’s the second one but if I’m not right I’m sorry

3. A circle with center (0,0) has a y-intercept at (3,0).
Find the equation of the circle.

Answers

Answer:

x^2 + y^2 = 9

Step-by-step explanation:

The standard equation of a circle with center at (h, k) and radius r is

(x - h)^2 + (y - k)^2 = r^2.  Here h = 0, k = 0, x = 3 and y = 0:

(3 - 0)^2 + (0 - 0)^2 = r^2, or

9 = r^2.  Thus, the radius is 3.

The equation of this circle is (x - 0)^2 + (y - 0)^2 = 9, or

x^2 + y^2 = 9

Simplify the following expression.
4(3x+6)-(5x-9+2k)

Answers

Answer:

−2k+7x+33

Step-by-step explanation:

Three friends compare the balances in their checking accounts.

The balance in Al's account is $32.60.The balance in Dee's account is 34
the balance in Al's account.
The balance in Zac's account is $49.08 less than the balance in Dee's account.

What is the balance in Zac's account?

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Is the balance is dee’s account 34% less then AL’s and also don’t trust anyone who tells you to click on a link it’s a virus

Find the equation of the straight line having a slope root 3 and passing through the point(-1,5)​

Answers

Given:

Slope of a straight line is [tex]\sqrt{3}[/tex].

The line passing through the point (-1,5).

To find:

The equation of the straight line.

Solution:

The point slope form of a line is:

[tex]y-y_1=m(x-x_1)[/tex]

Where, m is the slope and [tex](x_1,y_1)[/tex] is the point.

The line passing through the point (-1,5) with slope [tex]\sqrt{3}[/tex]. So, the equation of the line is:

[tex]y-5=\sqrt{3}(x-(-1))[/tex]

[tex]y-5=\sqrt{3}(x+1)[/tex]

[tex]y=\sqrt{3}x+\sqrt{3}+5[/tex]

Therefore, the equation of the straight line is [tex]y=\sqrt{3}x+\sqrt{3}+5[/tex].

CAN SOMEONE PLEASE HELP ILL CHOOSE BRAINLIEST IF BEST!

Answers

Answer:

0 dots = 10

1 dot = 1, 2, 3, 9

2 dots = 0, 4, 5, 7, 8, 11

3 dots = none

4 dots = 6

A person babysits for about 6 hours each week. The graph has one single peak at the center (6) and is a bell shaped distribution. The peak at 6 shows that there is a high number of data points in that area of the graph, meaning it is the typical number of hours for babysitters to babysit.

please don't give me downloaded answer on WinZip, it doesn't work on my device. need help with area and perimetre

Answers

Answer:

Perimeter = 64m

Step-by-step explanation:

I can only help for Perimeter.

12+20+12+8+8+4=64m

Sheila is twice as old as Rita. In two years, Sheila will be four times as old as Rita was nine years ago. How old is each now?

Answers

Answer:  (Sorry for not wording it correctly I had to reword it)

Step-by-step explanation: Let R be the current age of Rita. Let S be the current age of her son.

Rita is twice as old as her son.

=> R = 2S

In 4 years, R will be 4 times as old as S was 9 years ago

=> R + 4 = 4 (S - 9)

Solve for R, and S:

=> R + 4 = 4 (S - 9)

=> (2S) + 4 = 4(S - 9)

=> 2S + 4 = 4S - 36

=> 2S - 4S = -36 - 4

=> -2S = -40

=> S = 20

Find R:

=> R = 2S

=> R = 2(20)

=> R = 40

Therefore, Rita is 40, her son is 20.

The mass of a gold atom is 3.29 x 10-22 grams. The mass of a helium-4 atom is
6.65 x 10-24
grams. How many times greater is the mass of a gold atom than the
mass of a helium-4 atom? Write your answer in standard notation, rounding to the
nearest tenth.

Answers

Answer:

um, I checked the questions you asked and we have the same questions, I think we might be in the same school lol

There are 4.9 x 10³ times greater is the mass of a gold atom than the mass of a helium-4 atom.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.

For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

We have to given that;

The mass of a gold atom is 3.29 x 10⁻²² grams.

And, The mass of a helium-4 atom is, 6.65 x 10⁻²⁴ grams.

Hence, The amount of greater is the mass of a gold atom than the mass of a helium-4 atom is,

⇒ 3.29 x 10⁻²² /  6.65 x 10⁻²⁴

⇒ 0.49 x 10²

⇒ 4.9 x 10³

Thus, There are 4.9 x 10³ times greater is the mass of a gold atom than the mass of a helium-4 atom.

Learn more about the divide visit:

https://brainly.com/question/28119824

#SPJ2

Write a rule in function notation to describe the transformation that is a reflection across the x-axis.

Answers

Answer:

R(x, y) = (x, -y)

Step-by-step explanation:

When we have a reflection across some line, the distance between the original point and the reflected point to the line is invariant.

For a reflection around the x-axis, the x-value is invariant, then the only value that can change is the y-value.

So if we have a point like (4, 7)

Which is at a distance of 7 units to the x-axis, the only other point that is also at a distance of 7 units to the x-axis that has the same x-value is (4, -7)

Here we already can see the rule.

If we have a point (x, y), the reflection across the x-axis gives us the point (x. -y)

Then we can write this reflection as a function in the next way:

R(x, y) = (x, -y)

This means that if the input is the point (x, y), the output is the point (x, -y)

Find the missing side. Round to the nearest tenth.

Answers

Answer:

Solution given:

relationship between base and hypotenuse is given by sin angle

sin angle =b/h

cos55=16/x

x=16/cos55°=27.89=28 is your answer .

There are 58 people in a store. 10 of them are employees. 6 come out, 4 come in. 16 leave, and 7 enter

Answers

Answer:

47 people

Explanation:

58 - 6 + 4 -16 + 7 = 47

Find the volume of a sphere with a radius of 9√6
Volume: __√6π

Answers

Answer:

[tex]648\sqrt{6}[/tex]π

Step-by-step explanation:

[tex]\frac{4}{3}[/tex]π(9√6)³

=[tex]\frac{4}{3}[/tex]π81*6*√6

=(486*[tex]\frac{4}{3}[/tex])√6π

=648√6π

Kevin divides 3 pieces of paper into fourths. How many fourths does he have? Draw a picture to support your answer.

Answers

Answer: 12 fourths

Step-by-step explanation: I cant drawa picture but i would suggest drawing 3 squares and drw a cross across each to make 12 squares all together

A pizza with a diameter of 13 inches is cu to to 12 equal slices.

Answers

Jayden 44.2433333 inches squared

Carson 55.3041665 inches squared

Step-by-step explanation:

Can someone really help me!

Answers

Answer:

Step-by-step explanation:

 3x - (3x) - 2 = 3x + 3x - 2    {Combine like terms}

                       = 6x - 2    

I-100I + 3x - [-4x] = 100 + 3x + 4x

                            = 100 + 7x

I -100 I  means absolute value of 100 = 100

Find 87% of 365
To find this answer, you would

Answers

87:375*100 =

(87*100):375 =

8700:375 = 23.2. So the answer is 23.2

Answer:

317.55

Step-by-step explanation:

87% = 87/100 so

(87*365)/100 = 317.55

someone please help me solve this geometry equation, if you do it with work i will give you the 35 points and brainliest

Answers

9514 1404 393

Answer:

  A.  201 cm³

Step-by-step explanation:

To find the volume, we need to know the length of the prism and the area of the triangular base.

We can find the area of the triangular base a couple of ways. Since we are given some angles, the convenient way will be to make use of those angles.

The triangular base is isosceles. For our purpose, we assume that means AB = BC. If we define point M as the midpoint of AC, then triangle BMC is a right triangle with a base of (9 cm/2) = 4.5 cm.

The side BC can be found from the trig relation ...

  cos(∠BCA) = CM/BC

  BC = CM/cos(∠BCA) = (4.5 cm)/cos(50°) ≈ 7.00

Then the area of the end triangle ABC is ...

  base area = (1/2)(AC)(BC)sin(50°)

  base area = (1/2)(9 cm)(7 cm)sin(50°) ≈ 24.133 cm²

__

The length CF can be found from the relation ...

  tan(40°) = EF/CF

  CF = EF/tan(40°) = (7.00 cm)/tan(40°) ≈ 8.343 cm

Then the volume of the prism is ...

  V = Bh

  V = (24.133 cm²)(8.343 cm) ≈ 201 cm³

The volume of this isosceles triangular prism is about 201 cm³.

Answer:

A. 201 cm³ is the answer.

Step-by-step explanation:

#OrganizeLearning

Help geometry!!!! Please show work

Answers

Answer:

A

Step-by-step explanation:

13 + 4 = 17

so A

Step-by-step explanation:

Side AB is Adj

Side BC is OPP

Side AC is HYP

Apply sine function.

[tex] \sin(x) = \frac{4}{13} [/tex]

Take the inverse of sine.

[tex] \sin {}^{ - 1} ( \frac{4}{13} ) = 17[/tex]

w h a t, i s, t h i s . . ?

Answers

Best bet chose E 3^x*x

PLEASE HELP MEH!!!!!!!!
Design a tiling that uses a repeating pattern consisting of 2 kinds of shapes (e.g., 1 hexagon with 3 triangles forming a triangle). How many times did you repeat the pattern in your picture? How many individual shapes did you use?

Answers

Answer: 3 times

Step-by-step explanation:

67x6+(35÷5)Please help this is hard

Answers

Answer: 409

Step-by-step explanation:

67x6+(35÷5)

402+7= 409

Answer:

409

Step-by-step explanation:

all u do is do 35 divided by 5 which =7

then you do 67 times 6 which = 402

then you do 402 + 7 which = 409

Find the value of x and y that will make each quadrilateral a parallelogram.​

Answers

Answer:

x=29, y=8

Step-by-step explanation:

3x=87

x=29

alternate angles are always equal

9y=72

y=8

the lengths of both of the lines are equal because they are opposite each other/ symmetrical

Answer:

Step-by-step explanation:

uwuwuwuwuwuwuw

Please help out it’s math homework thank you for all your help !

Answers

Answer:

71°

Step-by-step explanation:

Remember, all the interior angles of a triangle add up to 180 degrees. Therefore, we can find the value of x by subtracting the values of the other angles from 180:

x=180-82-27

x=71

What is the approximate volume?

Answers

Answer:

B

Step-by-step explanation:

1) find the base area

base area = side^2 = 30^2 = 900 m^2

2) find the Volume

V = (base area x height)/3 = (900 x 21)/3 = 6300 m^3

Answer:

B) 6,300 m³

Step-by-step explanation:

The volume of approximate = L×W×H/3

30×30×21/3=

answer: 6,300

[tex]**************[/tex]

hope it helps...

have a great day!!

can anyone help me and place them in their correct spot?

Answers

Answer:

(9^2) --- Because 9*9 = 81

(9)

you got this one right (2x-8)

X= -8

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