An atom containing two more electrons than protons has a net charge of negative two (-2), as determined by the difference in number of positive protons and negative electrons.
Explanation:An atom which has two more electrons than protons has a charge of -2. The charge of an atom is determined by the difference between the number of protons and electrons. Protons have a charge of +1 and electrons have a charge of -1. Hence, if the atom has two more electrons than protons, it will have a charge of -2 because electrons contribute a negative charge. For instance, for an atom with 2 protons (+2 charge) and 4 electrons (-4 charge), the overall charge would be -2.
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An atom with 2 more electrons than protons will have a net charge of -2.
Explanation:An atom is the basic unit of matter, consisting of a nucleus containing protons and neutrons, surrounded by electrons. Elements are defined by the number of protons in their atoms. An atom's charge is determined by the difference between the number of electrons and the number of protons. If an atom has 2 more electrons than protons, it will have a net charge of -2.
For example, let's consider the element oxygen (O). Oxygen normally has 8 protons and 8 electrons, resulting in a neutral charge. If we add 2 more electrons to oxygen, it will then have 10 electrons and still 8 protons, giving it a net charge of -2.
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is 25% of a whole always the same amount ?
Answer:
Not, will be the same proportion but the amount vary depending the specific case.
Best regards
The second step in solving 1/3n- 7/12 is to divide both sides of the equation by 1/3.
True Or false?
that is true if that's 1/3n=7/12
if it's 1/3n-7/12 then the first step is to equal it to zero
Yes, the second step in solving 1/3n = 7/12 is to divide both sides of the equation by 1/3.
What is a expression? What is a mathematical equation? What is Equation Modelling? What is denominator?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. In a fraction say (x/y), [y] is called denominator.
We have the equation -
(1/3)n = (7/12)
We have -
(1/3)n = (7/12)
Dividing both sides by (1/3), we get -
[(1/3)/(1/3)]n = [7/12 x 3]
n = 7/4
Therefore, yes, the second step in solving 1/3n = 7/12 is to divide both sides of the equation by 1/3.
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a racing bicycle with a cash price of 900 at at 90 down down and 40.50 per month for 24 months
Answer:
1062 for 24 monthly payments plus 90$ down payment
Step-by-step explanation:
90+40.50x x=24 months
40.5 x 24 = 972
+90
------------------------
1062
find the zeros of f(x)=x^2+2x-8
Answer:
(x - 2) (x +4)
Step-by-step explanation:
Find what two numbers multiplied make -8 and those same numbers will equal 2 when they are subtracted. So...
4 x -2 = 8
4 - 2 = 2
So, (x - 2) (x + 4)
Answer:
(2,-4)
Step-by-step explanation:
What is a proportional relationship and how do you find it?
Answer: A proportional relationship is one in which two quantities vary directly with each other. To Decide whether two quantities are in a proportional relationship, is by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
For Example, 2 × 2 = 4 , and 4 ÷ 2 = 2 ← which is an example of Proportional relationships.
* Hopefully this helps:) Mark me the brainliest:)☺️
Before making invitations, Katrina counted the supplies she bought for her party. She counted 36 water balloons and 81 beads to make bracelets. She then needed to decide how many invitations to make.
What is the largest number of friends she can invite so each person gets the same amount of water balloons and each friend gets the same number of beads?
a.6
b.7
c.9
d.10
please explain thank you.
Answer: C
Step-by-step explanation:
Please help me solve number 19
Answer:
A x < 1/2
Step-by-step explanation:
4x-14x > -5
Combine like terms
-10x > -5
Divide by -10. Remember to flip the inequality since we are dividing by a negative
-10x/-10 < -5/-10
x < 1/2
The sum of two numbers is 38. The greater number is 8 more than the other number. Find each number. Use a system of linear equations to justify your answer
Answer:
g + l = 38
g = l + 8
l + 8 + l = 38
2l = 30
l = 15, g = 23
The numbers are 15 and 23. The lesser number is 15, and the greater number is 23.
To find the two numbers, we can set up a system of linear equations. Using substitution method, we find that the numbers are 23 and 15.
Explanation:To solve this problem, we can set up a system of linear equations. Let's assume that the two numbers are x and y, with x being the greater number.
We're given that the sum of the two numbers is 38, so we can write the equation x + y = 38.
We're also given that the greater number is 8 more than the other number, so we can write the equation x = y + 8.
We can solve this system of equations using substitution or elimination method. Let's use substitution method.
From the second equation, we can substitute the value of x in the first equation:
y + 8 + y = 38
2y + 8 = 38
2y = 30
y = 15
Now, substitute the value of y in the second equation:
x = 15 + 8
x = 23
Therefore, the two numbers are 23 and 15.
Help me with this please
The answer is:
[tex]cos(R)=\frac{1}{2}[/tex]
Why?Since it's a right triangle and we need to know the adjacent side of the triangle, in order to find cos(R), we can use the Pythagorean Theorem.
Pythagorean Theorem formula:
[tex]c^{2}=a^{2} +b^{2}[/tex]
Where:
[tex]c=hypotenuse=20\\a=FirstTriangleSide=AdjacentSide\\b=SecondTriangleSide=OppositeSide=10\sqrt{3}[/tex]
So, the adjacent side will be:
[tex]AdjacentSide=\sqrt{c^{2}-b^{2}}=\sqrt{20^{2}-(10\sqrt{3})^{2}}=\sqrt{400-100*3} \\AdjacentSide=\sqrt{100}=10[/tex]
Now, that we know the adjacent side, we can calculate cos(R), so:
[tex]cos(R)=\frac{AdjacentSide}{Hypotenuse}=\frac{10}{20}=\frac{1}{2}[/tex]
Have a nice day!
Answer:
cosine∠R = 1/2
Step-by-step explanation:
We have to find the figure of triangle.
We have to find the cosine∠R.
First we find the base of triangle.
We have formula: Hypotenuse² = Base² + perpendicular²
Hypotenuse = 20
Base= ?
perpendicular = 10√3
Applying formula we get,
Base = √20² - (10√3)²
base = 10
As we know that :
cosФ = base/hypotenuse
cosine∠R = 10/20
cosine∠R = 1/2 is the result.
Sophie drank 8 cups of water one day. How many pints of water did she drink?
Sophie drank 4 pints of water.
♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫
➷The answer is 4.
She drank 4 pints of water.
Each cup is 1/2 of a pint, so you divide by 2
Therefore, you would get 4 pints of water.
✽
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DOGE
choose which of these is the net of a cube
The answer is C as the net of a cube.
Further explanationWe will select which of four options are the net of a cube.
Remember the net of a cube is composed of six squares.
The answer to this problem is C. Because of the four options, only C has six squares as a condition of a net of cubes.
Following comprises the steps to construct a cube from the net of C:
Indicate a number in each square.Make square-1 the bottom.Fold up the square-2 and square-3 together so that square-3 becomes the left side while square-2 becomes the top of the cube.Fold up to square-4 and square-5. As follows square-4 as the back side while square-5 as the right side of the cube.Finally, fold up the 6th square into the front side of the cube.- - - - - - - - - -
Notes:
A net represents a flat shape that will fold up to make a three dimensional object. In our case, the net folds up to make a cube. The net of a cube is composed of six squares. One square is chosen to be the bottom as a reference to get started. A net of a cube will be correct if each square is folded and does not meet with the others. Undoubtedly the square which is the bottom will be overlooked with the top square.It is recommended that each square on the net be numbered so that it is clearly observed when folded.Learn moreWhat is the volume of a cuboid? https://brainly.com/question/10730070Find out the area of a cube https://brainly.com/question/12613605#Which an expression represents the height of the pyramid? https://brainly.com/question/2567975Out of the given nets, option C is the net of a cube.
What is the net of a cube?A net of a cube is a two-dimensional shape that can be folded into a three-dimensional figure.
We know that the total number of faces in a cube is 6
So total faces required to make a net of the cube = 6
Options A, B, and D are having 5 faces so they cannot make a net.
So the correct option is option C and we can fold the net to make a cube.
Hence, Out of the given options, option C is the net of a cube.
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Solve for x.
x = ___
Answer:
Solve y=x^2+2 for x.A.B.C.D
Step-by-step explanation:
sorry lamo
can you classify types of quadrilaterals and triangles if u know details about their sides and angles?
Answer:
yes
Step-by-step explanation:
what is the product of (x^2 + 3x + 1)(x^2 + x + 2)
Answer: [tex]x^4+4x^3+6x^2+7x+2[/tex]
Step-by-step explanation:
To solve this exercise you must apply the proccedure shown below:
- Apply the Distributive property (Remember that when you multiply two powers with the same base, you must add the exponents).
[tex]b^m*b^n=b^{(m+n)}[/tex]
- Add the like terms.
Therefore, you obtain that the product is:
[tex](x^2+3x+1)(x^2+x+2)=x^4+x^3+2x^2+3x^3+3x^2+6x+x^2+x+2\\=x^4+4x^3+6x^2+7x+2[/tex]
i dont understand the question for D can someone please explain it
Answer:
71°
Step-by-step explanation:
The average temperature is calculated as
Average = [tex]\frac{sum}{count}[/tex]
let x be the temperature in October, then
[tex]\frac{25+70+65+85+92+82+x}{7}[/tex] = 70, that is
[tex]\frac{419+x}{7}[/tex] = 70 ( cross- multiply )
419 + x = 490 ( subtract 419 from both sides )
x = 71
Average temperature in October was 71°
The value of sqrt-9 is not -3 because
Answer with explanation:
The value of square -9 is not -3 ([tex] \sqrt { - 9 } \neq - 3 [/tex]).
It is because we cannot take a square root of a negative number since any number multiplied by itself is a positive number so you never get a negative value.
Therefore, it given an error if you try to take a square root of a negative number on a calculator.
Answer:
The value of √-9 is not -3 because we cannot take the square root of negative numbers
Step-by-step explanation:
It is not possible to take square root of a negative number.
If any positive number we can take its square roots.
-9 is a negative number.
√9 = ±3 means that,
√9 = 3 or √9 = -3
3 * 3 = 9 and -3 * -3 = 9
Therefore the value of √-9 is not -3
What is the length of the diagonal?
Answer:
length of x is 50 yards
Step-by-step explanation:
Pythagorean Theorem: a^2 + b^2 = c^2
30^2 + 40^2 = c^2
900 + 1600 = c^2
2500 = c^2 need to solve for c, square root both sides
50 = c
The length of the diagonal is 50 yards. The diagonal of a rectangle divides the rectangle into two right-angled triangles. Thus, by applying the Pythagoras theorem we can able to find the length of the diagonal.
What is the Pythagoras theorem?The theorem states that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle) and the algebraic notation, [tex]a^2 + b^2 = c^2[/tex].
Finding the diagonal of the rectangle:The diagonal of a rectangle divides the rectangle into two halves of right-angled triangles.
The length and breadth of the rectangle are 40 yards and 30 yards.
The diagonal x divides the rectangle. So, it becomes a common hypotenus for the two right-angled triangles.
So, applying the Pythagoras theorem.
x^2 = (40)^2 + (30)^2
= 1600 + 900
= 2500
Thus, the value of x is 50 yards.
Therefore, the length of the diagonal is 50 yards.
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MUST SHOW WORK IN ORDER TO GET BRAINLIEST!!!!
the angle of elevation from mindy to a cell phone tower is 75. if mindy is standing 28 feet from the base of the tower, find the height of the tower
A) 104.5 ft
B) 105.8 ft
C) 106.1 ft
D) 107.4 ft
E) 108.9 ft
It is 104.5
Please mark me the Brainliest answer! Hope this helps. Hugs.
Using the tangent function with the given angle of elevation and distance to the tower, we can calculate that the height of the tower is approximately 106.1 feet, which is answer C.
Explanation:
This is a question about trigonometry, specifically using tangent ratios. Given that the angle of elevation from Mindy to the top of the cell phone tower is 75 degrees and Mindy is standing 28 feet from the base of the tower, we need to find the height of the tower. The tangent of an angle in a right triangle is defined as the opposite side (the height of the tower in this case) divided by the adjacent side (the distance from Mindy to the tower).
Using the tangent function gives us: Tan(75) = height / 28. Multiplying both sides by 28 gives us the height: height = 28*Tan(75). Calculating this gives us the height of the tower, which is approximately 106.1 feet, therefore Option C is correct.
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Help please ! It is precal
Answer:
The answer is the third
S = 16 t²
Step-by-step explanation:
* Lets study the order pairs in C to find what is the relation
between the input (t) and the output (S)
∵ C = {(t , S): (0 , 0) , (1 , 16) , (2 , 64) , (3 , 144) , .............}
∵ (0 , 0) is the first point
∴ There is no plus or minus in the relation between S and t
∴ We refused the last answer S = 16(t + 1)² because
if t = 0 then S = 16(0 + 1) = 16 ≠ 0
- If we chose the first answer:
∵ S = 16t
∵ t = 0 ⇒ S = 16(0) = 0 ⇒ its right
∵ t = 1 ⇒ S = 16(1) = 16 ⇒ its right
∵ t = 2 ⇒ S = 16(2) = 32 ⇒ its wrong
∴ We refused the first answer
- If we chose the second answer:
∵ S = (16t)²
∵ t = 0 ⇒ S = (16×0)² = 0 ⇒ its right
∵ t = 1 ⇒ S = (16×1)² = 256 ⇒ wrong
∴ We refused the second answer
- If we chose the third answer:
∵ S = 16 t²
∵ t = 0 ⇒ S = (16)(0)² = 0 ⇒ its right
∵ t = 1 ⇒ S = (16)(1)² = 16 ⇒ its right
∵ t = 2 ⇒ S = (16)(2)² = 16 × 4 = 64 ⇒ its right
∵ t = 3 ⇒ S = (16)(3)² = 16 × 9 = 144 ⇒ its right
∴ every time we multiply 16 by the square of the value of t
∴ We accept the third answer
3^0·10^(-4)=
a)-120
b)1
c)1/10,000
Answer:
b
Step-by-step explanation:
3^0
What is 20% out of 10
Answer:
2
Step-by-step explanation:
Well it’s like, 20 percent of 100% percent it will always be two. I hope you understand am very hard at explaining
Answer:
2
Step-by-step explanation:
Write the expression as a single natural logarithm.3In3+3Inc
Answer:
[tex]ln(27c^3)[/tex]
Step-by-step explanation:
Given: [tex]3ln(3)+3ln(c)[/tex]
If there is a coefficient in front of a [tex]log[/tex] or [tex]ln[/tex], that means it becomes an exponent.
[tex]ln(3^3)+ln(c^3)[/tex]
Simplify the exponent.
[tex]ln(27)+ln(c^3)[/tex]
When there is addition between two logarithms or natural logarithms, it means they multiply together.
[tex]ln(27c^3)[/tex]
Answer:
[tex] \ln 27c^3 [/tex]
Step-by-step explanation:
[tex] = 3\ln 3 + 3\ln c [/tex]
[tex] = \ln 3^3 + \ln c^3 [/tex]
[tex] = \ln 3^3c^3 [/tex]
[tex] = \ln 27c^3 [/tex]
Find the volume of a rectanglular prism if the length is x and the width is x^2 and the height is 5x^2 +4x+1. Use the formula v=l•w•h, where the l is the length, w is width and h is height, to find the volume.
Answer:
The volume = [tex]5x^{5}+4x^{4}+x^{3}[/tex]
Step-by-step explanation:
* The rule of the volume of the rectangular prism:
- the volume of any prism = base area × height
∵ The base of the rectangular prism is rectangle
∵ Area any rectangle = Length × Width = l × w
∴ The volume of the rectangular prism = l × w × h
* In the problem:
∵ l = x , w = x² , h = 5x² + 4x + 1
∴ The volume = (x)(x²)(5x² + 4x + 1)
* We will simplify it
- Multiply x by x² and then multiply the answer by the bracket
∵ x × x² = x³
∴ x³(5x² + 4x + 1)
∵ x³ × 5x² = 5x^5
∵ x³ × 4x = 4x^4
∵ x³ × 1 = x³
∴ The volume = [tex]5x^{5}+4x^{4}+x^{3}[/tex]
If you were asked to solve a system of linear equations using the substitution method, in what form would one or both of the equations start as that would make the problem the simplest?
Select one:
Answer:
It'd be easist if one of the variables was by itself
Step-by-step explanation:
I.E: y=2x+4 and 2y+x=23
What is the length of segment CD question mark
CD = two square root of 10 end square root
CD = 6
CD = 8
CD = 40
Answer:
CD = two square root of 10 end square root
Step-by-step explanation:
To find the length of a segment, use the distance formula. Substitute the order pairs for the endpoints of the segment. CD has the end points (-7, -4) and (-1, -2).
[tex]d = \sqrt{(y_2-y_1)^2 + (x_2-x_1)^2} \\\\d = \sqrt{(-4--2)^2 + (-7--1)^2} \\\\d = \sqrt{-2^2 + -6^2}\\\\d = \sqrt{4 + 36}\\\\d=\sqrt {40} = 2\sqrt{10}[/tex]
To find the length of segment CD, use the distance formula:
[tex]\[d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}.\][/tex] For CD with endpoints (-7, -4) and (-1, -2),
[tex]\[d = \sqrt{40} = 2\sqrt{10}.\][/tex]
To determine the length of a segment, utilize the distance formula by substituting the coordinates of the endpoints. In the case of segment CD, the endpoints are (-7, -4) and (-1, -2).
To determine the length of a segment, the distance formula is applied, denoted as:
[tex]\[ d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \][/tex]
For segment CD with endpoints (-7, -4) and (-1, -2), the distance is computed as follows:
[tex]\[ d = \sqrt{(-1 - (-7))^2 + (-2 - (-4))^2} \][/tex]
This simplifies to:
[tex]\[ d = \sqrt{(6)^2 + (2)^2} \][/tex]
[tex]\[ d = \sqrt{36 + 4} \][/tex]
[tex]\[ d = \sqrt{40} \][/tex]
Hence, the length of segment CD is [tex]\(\sqrt{40}\)[/tex] units. This result can be further expressed as [tex]\(2 \sqrt{10}\)[/tex] by factoring out the square of the largest perfect square, which is 4, from 40. Therefore, the exact length of segment CD is [tex]\(2 \sqrt{10}\)[/tex] units.
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HELP URGENT! WILL GIVE BRAINLIEST!!
1) What is the value of 8!?
A) 8
B) 64
C) 512
D) 40,320
2) What is the value of 5P5?
A) 5
B) 25
C) 120
D) 125
3) What is the value of 8P4?
A) 40,320
B) 1,680
C) 32
D) 24
4) What is the value of 7P7?
A) 1
B) 14
C) 49
D) 5,040
5) Four out of nine performers will be chosen to in a row on stage. How many ways can the 4 performers stand in a row?
A) 362,880
B) 347,760
C) 15,120
D) 3,024
Answer:
1) 8 2) 125 3) 1,680 4) 5,040 5) 3,024
Step-by-step explanation:
Answer:
FRee points man idc about the question
A y=cos(x+pi/2)
B y=cos(x+2pi)
C y=cos(x+pi/3)
D y=cos(x+pi)
Answer:
D
Step-by-step explanation:
There was actually too much work for this on my paper so I can't really show it, but if you can memorize this parent function I would.
It’s D) y=cos(x+pi).
La respuesta
could some body help me will mark brainliest thanks :)
Answer:
30 degrees!
Step-by-step explanation:
Christa solved the equation 5 (x-2)+6= 2x-4+ 3x and obtained -4 = -4. This means that the equation has
A. No solution
B. One solution
C. Two solutions
D. Many solutions
Step-by-step explanation:
Since -4 is indeed equal to -4, we can say that D, there are many solutions since all real numbers are a solution because any number is equal to itself :)
The equation 5(x-2)+6 = 2x-4+3x has infinitely many solutions.
Explanation:To solve the equation 5(x-2)+6 = 2x-4+3x, we start by distributing the 5 to the terms inside the parentheses: 5x - 10 + 6 = 2x - 4 + 3x. Next, we combine like terms on both sides of the equation: 5x - 4 = 5x - 4. This simplifies to 0 = 0, which means that both sides of the equation are equal.
Since the equation is true no matter what value of x we choose, this means that the equation has infinitely many solutions.
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What is the best interpretation of the y-intercept of the line?
The answer is the 3rd option. hope it helps
➷ The y - intercept is where the line hits the y axis.
At age 0, the height in inches was 30.
Therefore, the best interpretation would be "It's likely that Joanna was about 30 inches tall when she was born."
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➶ Good Luck (:
➶ Have A Great Day ^-^
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