Mathematics Middle School

In what periods are the lanthanides and actinides? Where are they
placed in the periodic table? Why?

Answers

Answer 1

Lanthanides are in period 6 and actinides are in period 7. They are at the down part of the page so that the periodic table can fit on the page.

Answer 2

Answer: They are palced in 6th and 7th period below the periodic table due to their properties and to keep the balanced shape of periodic table.

Related Questions

Arrange the following in descending order

-5, -12, 0, -3,-8

Answer options:
-12,-8,-5,-3,0


0,-3,-5,-8,-12


0,-5,-3,-8,-12


-3,-5,-8,-12,0
WILL GIVE BRANLIEST

Answers

Answer:

0, -3, -5, -8, -12

Step-by-step explanation:

0,-3,-5,-8,-12 I think.....not sure

Can someone give me a small lesson on nets and surface areas??

Thank you if you can. I really don’t understand.

Answers

Hi!

Here is the definition of a net from www.icoachmath.com:

“Net is a two-dimensional pattern of a three-dimensional figure that can be folded to form the figure. In other words, net is a flattened three-dimensional figure which can be turned into the solid by folding it.”

In the photo is an example of a net of a rectangular prism.

Surface area is the measure of the total area of the surface of a 3D object. For example, if I have a cube, the surface area would be the area of the outside of the cube.

Hope this helped,

Caroline

a net is just the sides of a 3d shape ‘unfolded’.

Hazel has 1 3\4 cups of rice. It takes 1 \8cup of rice to make one cup of chicken and rice soup. How many cups of chicken and rice soup can Hazel make if she uses all of her rice?

Answers

Answer: 3 1/8
Explanation: you do 13/4 - 1/8= 3 1/9
I think the answer is 3 1/8 ---> emphasis on the I tHiNk :^

help for brainliest plz

Answers

Answer:

Figure D

Step-by-step explanation:

Translation means that you move the shape (so the size doesn't change) and D is the only one that has been translated / moved

The answer is Figure D

I need help on this darn dang question "The streets of Millston are laid out like a grid, with each square being the same size. The distance from the movie theater to a restaurant is 1/2 mile along Cabot Street. If there are Exactly 4 blocks between the two locations, how long is each block?"

Answers

Answer:

Each block is 1/8 of a mile long.

Step-by-step explanation:

i believe it will be 1/8

What is the median of these numbers :
65,56,76,65,52,89,41

Answers

Answer:

65

Step-by-step explanation:

You find the one equally in the center of the numbers after they are in order.

65 is the answer of the median n don’t know what else to right cause I need answers too

help me please (20 points)

Answers

Answer:

231cm squared

Step-by-step explanation:

9 x 22 = 198.

198 / 2 = 99

triangle area = 99

15 x 22 = 330

total area = 330

330 - 99 = 231

Julio is selecting a random sample of people to survey for a newspaper article. Which elements are important for Julio to consider when choosing a random sample? Select three options.
the size of the population
the size of the sample
the characteristics and demographics of the population
the probable responses to the survey questions from the population
the probable responses to the survey questions from the sample

Answers

Answer:

Step-by-step explanation:

Answer:

It say the size of population characteristics

Step-by-step explanation:

Because  it makes sense those are I need

The correct options are given below,

The size of the population

The size of the sample

The characteristics and demographics of the population

What is a good newspaper article?

Good research and the right organizational structure are the key constituents of writing an impactful newspaper article. Besides that, elements like interesting lead, catchy headlines, bylines, and good additional information are the basic parts of a successful newspaper article.

Since, News articles are written in a structure known as the “inverted pyramid.”

In the inverted pyramid format, the most newsworthy information goes at the beginning of the story and the least newsworthy information goes at the end.

Learn more about newspaper articles here brainly.com/question/27671097

#SPJ5

Dont know how to do this and someone please do it for me!

Answers

Answer:

Solution given;

the ratio to corresponding side are

4/36/x9/12

I know by comparing corresponding side

if

3/4=x/6

doing crisscrossed multiplication

6*3=4*x

18=4x

x=18/4

x=9/2

what is the mode of these numbers
32, 16, 54, 60, 26, 32

Answers

Answer: The mode is 32

Step-by-step explanation: It is the number that is repeated multiple times.

The mode is 32 as there is two 32’s
The mode means the number repeated more than once in a set of numbers/ the most frequent number
Example - 99 , 62 , 83 , 90, 62
The mode here would be 62
Hope this helps have a good day

C=
5
9
(F−32)

The equation above shows how temperature F, measured in degrees Fahrenheit, relates to a temperature C, measured in degrees Celsius. Based on the equation, which of the following must be true?

A temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of
5
9
degree Celsius.
A temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit.
A temperature increase of
5
9
degree Fahrenheit is equivalent to a temperature increase of 1 degree Celsius.
A) I only
B) II only
C) III only
D) I and II only



This is just for fun. Lets see who can get this right!!!

Answers

B.

I might be wrong pls dont be mad

Can someone help me please

Answers

Answer:

R= C x 2 - 5

C= R/2

Step-by-step explanation:

the answer is r - 5 > 72

Solve the x
-9 (1/2x - 3) = 45

Answers

Answer:

=

−

3

6

7

Step-by-step explanation:

Answer:

x = -4

Step-by-step explanation:

-9 (1/2x - 3) = 45

Divide both sides by -9

1/2x - 3 = -5

Add 3 to both sides

1/2x = -2

multiply both sides by 2

x = -4

Please if you do both I will give brainiest (to the first one to answer)

Answers

Answer:

Answer to first:

Yes, x is a rational number.Yes, y is a rational number.Y is larger

Answer to second:

I know that -3.4 is a rational number because it is an integer or decimal not equal to zero.

Step-by-step explanation:

Explanations to first:

0.147 is rational because you can write it out.0.147 bar is rational because it can be written as a fraction.Y is larger because the numbers keep repeating, so it has a larger value than 0.147.

I really need help with this question.
What is 2+2?

Answers

Answer:

22

Step-by-step explanation:

You do maths

Answer:

[tex]\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}[/tex]

[tex]2 + 2 \\ = 4[/tex]

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

[tex] \huge\blue{ \mid{ \underline{ \overline{ \tt ꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐ }} \mid}}[/tex]

The drama club sold 415 Manatee tickets to the school's play for $7.95 each 18 of the tickets were refunded estimate the tickets is your estimate and overestimate or an underestimate. PLZ HELP ASAP!!!!!!

Answers

since you always round up when you estimate in the middle lets say theres 420 tickets. Each is 7.95, but we'll round it to 8.00. 420x8.=3,360. After that part we need to find about how much tickets were refunded. So we round 18 to 20 and each ticket is still 8$. 20x8=160. Finally in all, we do 3,360-160=3200. Its an overestimate because we rounded up. Im not sure what else youre asking but thats the basic answer.

Higher Order Thinking A customer at a clothing store is buying a pair of pants and a shirt. The customer can choose between a sale that offers a discount on pants, or a coupon for a discount on the entire purchase. Let n represent the original price of the pants and s represent the price of the shirt. a. Write two expressions that represent the "15% off sale on all pants" option. b. Write two expressions that represent the "10% off her entire purchase" option. c. If the original cost of the pants is $25 and the shirt is $10, which option should the customer choose? Explain

Answers

Answer:

do you still need an answer?

Step-by-step explanation:

?

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