An element's identity is determined by the number of

Answers

Answer 1

Answer:

number of protons

Step-by-step explanation:

The identity of an element is determined by the number of protons. One cannot alter the number of protons without altering the identity of the element. By adding a proton, the atomic number increases by one and the element identity changes. Number of neutrons can be altered to create isotopes.


Related Questions


help me pleaseeeeeeeee help nowww

Answers

Answer:

IT'S A. HEHEHEHEHEHEHE

A is the correct answer

Totsakan school is selling tickets to a choral performance on the first day of ticket sales the school sold 10 senior tickets and 1 child ticket for a total of $85 the school took in $75 on the second day by selling 5 senior citizens tickets and 7 child tickets find the price of a senior ticket and the price of a child ticket

Answers

Given :

On the first day of ticket sales the school sold 10 senior tickets and 1 child ticket for a total of $85 .

The school took in $75 on the second day by selling 5 senior citizens tickets and 7 child tickets.

To Find :

The price of a senior ticket and the price of a child ticket.

Solution :

Let, price of senior ticket and child ticket is x and y respectively.

Mathematical equation of condition 1 :

10x + y = 85    ...1)

Mathematical equation of condition 2 :

5x + 7y = 75    ...2)

Solving equation 1 and 2, we get :

2(2) - (1)   :

2( 5x + 7y - 75 ) - ( 10x +y - 85 ) = 0

10x + 14y - 150 - 10x - y + 85 = 0

13y = 65

y = 5

10x - 5 = 85

x = 8

Therefore, price of a senior ticket and the price of a child ticket $8 and $5.

Hence, this is the required solution.

 

Selena wants to sell hot dogs at a local sports arena. She must pay a fee of $25 $25 to sell hot dogs and estimates each hot dog will cost her $0.75 $0.75 . Selena plans on selling each hot dog for $2.00 $2.00 . What is the minimum number of hot dogs ( x x ) Selena needs to sell for the revenue to be greater than or equal to her cost?

Answers

Answer:

20

Step-by-step explanation:

Let the cost of 1 hot dog be $x.

2x ≥ 25 + 0.75x

2x - 0.75x ≥ 25

1.25x ≥ 25

x ≥ 20

Someone help I’ll give brainlist lol

Answers

19-8/7j

Hope this helps

What figure models 6 divided by 3/2?

(6 divided by 3/2 equals 4)

NEEDS HELP NOW!
BRAINLIEST!

Answers

The second one

Pls mark brainliest

2089+2089? HHHHHEEELLLLPPP PLZ first to answer get brainlyset

Answers

Answer:

4178

Step-by-step explanation:

Answer:

4178

Step-by-step explanation:

THANK YOU SO MUCH I NEEDED POINTS Brainliest please!!!!

Simplify the following expression.

5+((2*5) -7)^2 -9

Your answer:

1


5


-4


16

(HELP PLEASE!!!)

Answers

Answer:

the answer is 5

Step-by-step explanation:

The number of violent crimes committed in a day possesses a distribution with a mean of 2.8 crimes per day and a standard deviation of 4 crimes per day. A random sample of 100 days was observed, and the sample mean number of crimes for the sample was calculated. Describe the sampling distribution of the sample means.

Answers

Answer:

The distribution is approximately normal with mean = 2.8 and standard error = 0.4

Step-by-step explanation:

We are given;

Mean; μ = 2.8

Standard deviation; σ = 4

Sample size; n = 100

Now, the central limit theorem states that the sample mean with a sample size(n) from a population mean (μ) and population standard deviation(σ) will, for large value of n, have an approximately normal distribution with mean μ and standard error as (σ/√n)

The sample size is 100 and thus it's very large because it's bigger than minimum of 30 for approximate distribution.

Thus, SE = (σ/√n) = 4/√100 = 4/10 = 0.4

Thus,from the central limit theorem I described, we can say that the distribution is approximately normal with mean = 2.8 and standard error = 0.4

Write a function rule that represents the sentence.
y is 4 less than the product of 7 and x.

Answers

Answer:

y = 7x - 4

just as it says in words

Messi scored one goal every 82 minutes.How many goals did he score if he played for 4453 minutes in a season.

Answers

Answer:

Step-by-step explanation:

I’m not sure but I need points

Answer:

54

Step-by-step explanation:

divide

Select the correct answer.
Mel created a scatter plot and drew a line of best fit, as shown

Answers

Answer:

C. y = 2/3x + 6

Step-by-step explanation:2/3 is the slope and 6 is the y intercept.

Which of these expressions shows like terms?

Your answer:

3x +3y


2x +2x^2


2x+3x


2x^2 +3y^2

Please help! Need Now!

Answers

Answer:

C

Step-by-step explanation:

2x+3x Have the same variable. Therefore they both have like terms

Find the common difference of the arithmetic sequence –8, -2, 4, ...

Answers

Answer:

              d = 6

Step-by-step explanation:

[tex]a_1=-8\\a_2=-2\\a_3=4\\\\d=a_2-a_1=a_3-a_2=...=a_n-a_{n-1}\qquad\qquad \{n\ge2\}\\\\\left{\big{a_2-a_1=-2-(-8)=-2+8=6}\atop\big{a_3-a_2=4-(-2)=4+2=6\quad\ \,}\right\}\implies\ \ d=6[/tex]

What is the value of x in the equation 18-37x--42x+0.37​

Answers

Answer:4.48

Step-by-step explanation:

Cuz I sed so. (70% chance of being wrong, so just use 4.48099829836)

If one quart is the same amount as 2 pints, how many pints are in 8 quarts​

Answers

Answer:

16 pints

Step-by-step explanation:

Answer:

Step-by-step explanation:

1:2

1 q to 2 p

8q to 16 p or 8:16

What is the distance between the points (2, 3) and (5, -4)?

Answers

Answer:

7.6158

Step-by-step explanation:

7.6158 is the answer I think

Which inequality is shown in the graph?

Answers

Answer: 3ft²?

Step-by-step explanation:

I got bullied guys *drop mic 100000000000x times till faints*

Answers

Step-by-step explanation:

1-800-273-8255 my dude

Answer:

I think you should tell someone you trust that you got bullied. I'm so sorry, I know people that got bullied. We'll fight this together.

Write an equation of the line that passes through a pair of points:
(-3,1). (-2,-5)

Answers

Answer:

[tex]y=-6x-17[/tex] (B)

Step-by-step explanation:

[tex]y=mx+b\\m=\frac{y_{2}-y_{1} }{x_{2} -x_{1} } = \frac{1--5}{-3--2} = \frac{6}{-1} = -6\\y=-6x+b\\[/tex]

Plug in one of the two points for X and Y

(-3,1)

[tex]1=-6(-3)+b\\1=18+b\\b=-17\\\\y=-6x-17[/tex]

scientific notation for 7×10^9​

Answers

Answer:

7,000,000,000

Step-by-step explanation:

7×10^9

The number after ten is how many zeros you put.

Answer: 7000000000

Step-by-step explanation: 7x

1000000000

Can someone pls help me I’m really struggling

Answers

I’m pretty sure it’s mutually exclusive

Factor f(x)=x3+x2-17x+15 if f(3) =0

Answers

Answer:

Step-by-step explanation:

x^3+x^2-17x+15  replace x with 3

3^3+3^2-17(3)+15 =0

27+9-51+15  combine

=0

PLEASE HELP!!! Find the slope of each side of the triangle.

Answers

9514 1404 393

Answer:

AB: -3BC: 2/3AC: -1/4

Step-by-step explanation:

The slope of a given segment is the ratio rise/run. The "rise" is the number of vertical divisions between the points. The "run" is the number of horizontal divisions between the points. The "run" is positive left-to-right. The corresponding "rise" is positive up.

Here are the segment slopes (rise/run).

  AB = -3/1 = -3

  BC = 2/3

  AC = -1/4

Tavares is saving for a $350 cell phone.He already has $60 and plans to save an additional $20 per week?How many weeks will Tavares have to save before he can buy the cell phone ?

Answers

Answer:

15 weeks

Step-by-step explanation:

15 times 20 = 300

300+60=360

15 Weeks

Step-by-step explanation:

You earn 20 every week, multiply that by 15 and you get 300. You already have 60 So add 300+60 and you get 360, so 15 weeks

I NEED HELP AGAIN PLEASE!!

Answers

Answer:

A

Step-by-step explanation:

Yaneev thinks of a number y. He subtracts three from the number, then doubles it. What is the final result, in terms of y?

Answers

Answer:

y = 6

Step-by-step explanation:

2(y - 3) = y

2y - 6 = y

y = 6

Hope that works out :)

how would you solve
y - 4 = 3

Answers

Answer:

Y = 7

Step-by-step explanation:

You would add 4 to both sides to cancel out the -4. That leaves y by itself equaling 7.

The solution of the equation y – 4 = 3 will be 7.

What is the solution of the equation?

The solution of the equation means the value of the unknown or variable.

The equation is given below.

y – 4 = 3

Add 4 on both sides, we have

y – 4 + 4 = 3 + 4

            y = 7

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ2

A student has some $1 bills and $5 bills in his wallet. He has a total of 13 bills that are worth $45. How many of each type of bill does he have?

Answers

Answer:

8 $5 bills and 5 $1 bills

Step-by-step explanation:

5x8=40, which would be $40

1x5=5, which would be $5

$40+$5=$45

hope this helps! :)

Answer:

it's not possible. I've tried every way, r these the right amounts?

❗️URGENT NEED ASAP❗️
Given functions,

f(x) = -5x – 14 g(x) = -02 + 9x - 1

find f(9) + g(-2)

Answers

Answer:

Step-by-step explanation:

❗️URGENT NEED ASAP❗️

Given functions,

f(x) = -5x – 14 g(x) = -02 + 9x - 1

find f(9) + g(-2)

Answer:

Functions! Nice.

Step-by-step explanation:

This is a pretty simple concept.

What it wants you to do is to input those values inside the parentheses(9 or -2) into those equations for x. Then, you will have to add those values that you get.

If you didn't understand, watch and learn!

[tex]for x=9\\f(9)=-5(9)-14\\f(9)=-59\\[/tex]

Now try to do that for the second equation, but this time, have x as -2.

(I also can't solve the last one because I can't make sense of the equation. What is 02?)

Stay Safe!

P.S. When you find the answer to that second one, just add it to the first answer, and you'll get the final answer.

What type of angles are these? Corresponding, vertical, alternate interior, alternate exterior, or adjacent angles.

Answers

Answer:

im 90% sure its alternate exterior

Step-by-step explanation:

Other Questions
The middle class that emerged during the Industrial Revolution consisted mainly of working class people who got factory jobs. a mix of government officials and skilled workers. wealthy people who owned factories and businesses. a mix of working class and upper-class workers. Explain why it is important for entrepreneurs to talk with industry experts whendeveloping new business concepts(10 Marks) What value of x satisfies the equation below? Explainhow you know- 6x=36 In several cultures in the americas, people built _____, which could be up to 100 feet high and held buildings of importance.A. tombsB. platform moundsC. pithouses D. huacas Which of the following describes what happens on March 21st?autumnal equinoxwinter solsticevernal equinoxsummer solstice rfmedfkuenhfruiad how we will solve this question?36.45cL=______=L What creates the air pressure difference between the equator and the poles?A. The length of the seasonB. The duration of the solar yearC. The amount of direct sunlight each area receivesD. The shape of the earth The lead time for an inventory item is 3 weeks and weekly dmand average 8000 units with SD of 1500 units for an item we deisire a 78% servcie level. what are our average requirements during lead time? Which are magical elements in "The Magical Lost Brocade?" Choose two answers. A. The mother was turned into a beautiful queen. B. Ping was unhurt by the icy ocean. C. The old man was a wizard. D. The brocade came to life. E. The horse flew to the top of the mountai What were the purposes of the Great Wall of China? Choose three correct answers.to protect China from invadersto symbolize Chinas powerto show respect for ancestorsto show that China was a unified kingdomto be used as a tool for astronomers passes through the points (4, 2) and (12, 6)? What is 2052 divided by 76 identify at least one way the Constitution was an improvement over the Articles of Confederation someone help!!! ill mark you brainliest Help Please! 5=(2m-b)/(m+b) How has your education prepared you for the workforce so far? What sort of things have your teachers done (in regard to expectations, rules, roles, etc.) that will help to prepare you for life outside of the school walls? What similarities does a school and work environment have? What makes each of these environments different?give me 3-5 sentences i might give you brainliest if you got it Aqueous solutions of sodium carbonate and magnesium chlorate are mixed, what is the precipitate, chemical equation, complete ionic equation, and net ionic equation Find the slope of the line y = 8/3x - 1/3 simplify your answer. 13) Popcorn sold at most movie theaters is very salty, causing people to becomethirsty and buy soda. Explain what is happening to your throat and mouth cells.You MUST use the terms DIFFUSE (or diffusion or diffuses), WATER, and explainthe DIRECTION of diffusion (INTO or OUT of CELLS). * what was the first railroad in texas no initials, please.