PLEASE ANSWER THIS
imagine is above
Figure 3 shows the electronic structure of an atom.
Figure 3
Electron
Nucleus
RON
This element is in the shaded group on Figure 2.
Why is this element unreactive?
Answers
Answer:
huh looks simple....it's unreactive because it's already stable
Step-by-step explanation:
it has eight electrons in the outer most energy level making it stable so it doesn't need to loose or gain electrons
Related Questions
PLEASE HELP!!!! It’s timed
Evaluate the function requested. Write your answer as a fraction in lowest terms.
Triangle A B C. Angle C is 90 degrees. Hypotenuse A B is 41, adjacent B C is 9, opposite A C is 40.
Answers
Answer:
bStep-by-step explanation:
we are given opposite, adjacent and hypotenuse
and said to find cos(B)
recall trigonometric identity [tex]\cos(\theta)=\dfrac{adj}{hypo}[/tex]
let adj and hypo be 9 and 41 respectively
so
[tex] \displaystyle \: \cos( \beta ) = \frac{9}{41} [/tex]
hence our answer is b
what is the solution to the system of equations below? y=-3x-9 and y=1/3x-39
a. (9, -36)
b. (9,0)
c. (-9, 18)
d. (-9, -42)
Answers
Answer:
Step-by-step explanation:
Alex graphed two lines in order to find the
solution to a given system of equations.
What is the solution?
Answers
Answer:
It's the point in where they intersect or cross.
HELP 40 POINTS!!!! ILL GIVE BRAINLIEST TOO
Answers
Answer:
40 students
10 teachers
Step-by-step explanation:
32 + 8 = 40
5 + 5 = 10
Hope this helps!! ♥︎
help !! 10 points!! :)
Answers
Answer:
line f
Step-by-step explanation:
Does the point (4, 1) lie on the line y = 3x + 1 ?
Answers
Answer:
no
Step-by-step explanation:
To determine if the point lies on the line, substitute x = 4 into the equation and if the value obtained equals the y- coordinate of the point then it lies on the line.
y = 3(4) + 1 = 12 + 1 = 13 ≠ 1
Thus (4, 1) does not lie on the line
Replace x in the equation with the x value of the point and solve for y. If Y equals the y value of the point then the point lies on the line.
y = 3x + 1
y =3(4) +1 = 12 +1 = 13
y = 13, this does not equal the y value of the point which is 1, so point (4,1) does not lie on the line.
what is the best description pf addititon property of equality
Answers
Addition Property of Equality
If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal.
Find the measure of the angle indicated in bold.*
a. 40 degrees
b. 109 degrees
c. 54 degrees
d. 131 degrees
Answers
Answer:
131°
Step-by-step explanation:
the equations represent alternate exterior congruent angles so they are equal.
31x + 7 = 32x + 3
simplify:
4 = x
31(4) + 7 = 131°
Is the number 0.1875 rational or irrational
Answers
The coordinates for a rectangle are 3,6 3,-6 -7,6 what is the perimeter
Answers
Answer:
Perimeter of the rectangle = 44 units
Step-by-step explanation:
Let the coordinates given are the vertices A(-7, 6), B(3, 6), and C(3, -6) of the rectangle.
Since, opposite sides of a rectangle are equal in length,
Fourth vertex of the rectangle will be D(-7, -6)
Length of AB = 3 - (-7) = 10 units
Length of BC = 6 - (-6) = 12 units
Length of CD = 3 - (-7) = 10 units
Length of AD = 6 - (-6) = 12 units
Therefore, perimeter of the rectangle = 2(Length + width)
= 2(12 + 10)
= 44 units
We want to find the zeros of this polynomial:
p(3) = (x + 2)(2x - 3)(3-3)
Plot all the zeros (x-intercepts) of the polynomial in the interactive graph
Answers
19. Sally lives 3 miles due west of Jenny, and Jenny lives 4 miles due north
of Dave. To the nearest mile, how far is it from Sally's house to Dave's
house.
Jenny
O A) 2.65 mi.
O B) 5 mi
O C) 7 mi
D) 25 mi
Answers
The answer is seven miles
The distance of from Sally's house to Dave's house is 5 miles. Therefore, option B is the correct answer.
What is the Pythagoras theorem?The Pythagoras theorem which is also referred to as the Pythagorean theorem explains the relationship between the three sides of a right-angled triangle. According to the Pythagoras theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides of a triangle.
Given that, Sally lives 3 miles due west of Jenny, and Jenny lives 4 miles due north of Dave.
Distance is
c²=3²+4²
c²=9+16
c²=25
c=5 miles
The distance of from Sally's house to Dave's house is 5 miles. Therefore, option B is the correct answer.
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what is 2 copies of 1/6
Answers
2/6=1/3
EFGH is translated 5 units to the left and 2 units up.
y
-1 1 2 3 4 5 6 7 8 x
-1
E4,-1)
-2
FO, -3)
H6, -2)
-3
-4
G(2, 4)
-5
8
-7
A. E(-1,1)
B. E(6,-6)
C. E (-1,-3)
D. E(9,-3)
Answers
Here is my question again:
Answers
Answer:
[tex] \sqrt[2]{3} [/tex]
[tex] \sqrt[4]{3} [/tex]
Step-by-step explanation:
A garden is in a shape of an equilateral triangle with side 4 ft.
The objective is to find the area of the garden.
The formula to find the area of the triangle is, A= 1/2• b • h
Here, b represents the side of the triangle and h represents and h represents the height of the triangle.
The height of an equilateral triangle can be calculated by,
H = /3/2 • b
= /3/2 • 4
=
[tex] \sqrt[2]{3} [/tex]
Now substitute the value of b and h in the formula of area of triangle.
A = 1/2 • 4 •
[tex] \sqrt[2]{3} [/tex]
=
[tex] \sqrt[4]{3} [/tex]
ft²
Answer:
4 and [tex]2\sqrt{3}[/tex]Step-by-step explanation:
Base of the triangle is:
b = 4Height of the triangle:
h = [tex]\sqrt{4^2 - (4/2)^2}[/tex] = [tex]\sqrt{16 - 4}[/tex] = [tex]\sqrt{12}[/tex] = [tex]2\sqrt{3}[/tex]Area is:
A = 1/2* 4* [tex]2\sqrt{3}[/tex]On a coordinate plane, a piecewise function has 3 lines. The first line has a closed circle at (negative 3, negative 4) and continues horizontally to an open circle at (0, negative 4). The second line has a closed circle at (0, 2) and continues horizontally to an open circle at (4, 2). The third line has a closed circle at (4, 3) and continues horizontally through (5, 3) with an arrow instead of an endpoint.
A step function is shown on the graph. What are the domain and range?
Domain:
Range:
Answers
Answer:Answer:
f(-2) = 2
f(0) = 3
f (4) = -1
Step-by-step explanation:
The equation of the straight line passing through the points (0,3) and (-4,1) is
⇒ 2(y - 1) = x + 4
⇒ 2y - 2 = x + 4
⇒ 2y = x + 6
⇒
Again, the equation of the line passing through the points (0,1) and (4,-1) is
⇒ - 2 ( y + 1) = x - 4
⇒ - 2y = x - 2
⇒
Therefore, the function is defined as
for x ≤ 0 ........... (1) and
for x > 0 ............ (2)
Therefore, f(-2) = 2 from equation (1).
f(0) = 3 from equation (1)
And f (4) = -1 from equation (2). (Answer)
Step-by-step explanation:
Answer:
Sorry this is late but here:
Domain: real numbers greater than or equal to -3
Range: equal to -4, 2, and 3
Step-by-step explanation:
I just did it on edge :D
A store had 300 empty shelves. Each shelf could hold 20 cans. What is the total number of cans the shelves could hold?
Answers
Answer:
it can hold 6000 cans
Step-by-step explanation:
brainliest plz
Answer:
6000 cans
Step-by-step explanation:
Empty Shelves = 300
Each shelf can hold = 20 cans
Total = 300 * 20
=6000 cans
Can someone please help me with math.
Answers
Answer:
Your answer would be B.
Step-by-step explanation:
Hope this helps!
from a point 12 ft from the base of a building, the angle of elevation from the ground to the top of the building is 70 degrees. Which is the closest to the height of the building
Answers
Answer:
c 33ft .....
Step-by-step explanation:
c is correct
The possible height of the building is 33 ft.
What is Angle of Elevation?
The angle of elevation is an angle that is formed between the horizontal line and the line of sight. If the line of sight is upward from the horizontal line, then the angle formed is an angle of elevation.
Here, Let the height of the building be x ft
Base = 12ft.
Angle of Elevation = 70⁰
Now, tan α = perp. / base
tan 70⁰ = x/12
2.74 = x/12
x = 12 X 2.75
x = 33
Thus, the possible height of the building is 33 ft.
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A wall 4 ft. high casts a 6 ft. shadow, while a tree casts a 24 ft. shadow How tall is the tree ?
Answers
The original price of a bicycle was $375. Now it is on sale for $295. What percentage of the original price was the markdown?
Answers
Answer: $80
Step-by-step explanation:
Answer:
The percentage of the original price that was discounted is 21.33%
Step-by-step explanation:
The original price of a bicycle was $375. Now it is on sale for $295.
The discounted price of a product is calculated as the percentage of discount that you want to apply multiplied by the price of the product. This is the amount of money that is discounted. But to calculate the sale price, the original price of the product must be subtracted minus the discounted quantity.
So, this expressed in this case is:
375-x*375=295
The value of x is the discount that you want to calculate expressed in decimal number. This result will then be multiplied by 100 to obtain the discount expressed as a percentage.
Isolating the value of x you get:
-x*375=295-375
-x*375=-80
x=(-80)÷(-375)
x=0.2133
As a percentage, it is 0.2133*100= 21.33%
The percentage of the original price that was discounted is 21.33%
No need for an explanation it is option
Answers
Answer:
152
Step-by-step explanation:
Trick question,
4x + 52 + 28 = 180
Then
You subtract 180 and 28 to get 152
Solve the given proportion.
x = [?]
Answers
Answer:
x=48
Step-by-step explanation:
I hope I helped!!1
15.00 + 1.75x = 7.50 + 2.25
Answers
Which solution for P makes the equation true?
Answers
Answer:
8
Step-by-step explanation:
12.50(8) =100 +20 = 120
Answer:
p=8
Step-by-step explanation:
First we have to try all of the options to see if it is right
12.50(8)+20=120
(12.50*8)+20=120
100+20=120
120=120
Yay! The first one was right!
what is the median test score?
a)2.5
b)2
c)3
d)5
Answers
Answer: The answer I got was A) 2.5
Step-by-step explanation:
Hope this Helps!!!
Ok first of all fort nite is you know second I did some calculations its not five so the thing I cant find out is what 5.5 rounded is so what ever 5.5 rounded to is your answer so if you find out what 5.5 is rounded to youll have your answer! I hope this helps
Carmena and Alicia go to the supply store to purchase packs of
pens and paper. Carmen bought 5 packs of paper and 3 packs
of pens for $36.60. Alicia bought 6 packd of paper and 6
packs of pens for $53.40. What is the price of one pack of
paper and one pack of pens?
Answers
Pens Are 4:95
Paper is 3:95
The prices for both the things are $4.95 and $3.95 respectively.
What is a system of linear equations?A system of linear equations is a group of equations having same number of variables and degree.
For the n number of variables n number of equations are required.
On the basis of number of solutions a system of equations can be classified as consistent and inconsistent.
Given that,
The price for 5 packs of paper and 3 packs of pens is $36.60.
And, for 6 packs of paper and 6 packs of pens is $53.40.
Suppose the price of one paper pack be x and of pens be y.
Then, the given case can be written in terms of equation as,
5x + 3y = 36.60 (1)
6x + 6y = 53.40 (2)
Solve the equations by multiplying equation (1) by 4 and (2) by 2 and then subtracting as follows,
2(6x + 6y) - 4(5x + 3y) = 2 × 53.40 - 4 × 36.60
=> 12x - 20x = 106.80 - 146.40
=> -8x = -39.60
=> x = 4.95
Substitute x = 4.95 in equation (2) to get,
6 × 4.95 + 6y = 53.40
=> 6y = 53.40 - 29.70
=> y = 23.70/6
= 3.95
Hence, the prices of one pack of paper and one pack of pens are $4.95 and $3.95 respectively.
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What is the median of 5,2,9,21,12,3
Answers
Answer: 7
Step-by-step explanation:
First order the numbers by least to greatest
2, 3, 5, 9, 12, 21
Then find the number inbetween
In this case it's a tie between 5 and 9.
Find the average of those two numbers
The average is 5+9/2 = 7
Median is 7
in the sequence: 67, 55, 46, 34, 25,…, what number should come next?
a) 16
b) 13
c) 15
d) 19
Answers
Answer:
b) 13
Step-by-step explanation:
67 - 55 = 12
55 - 46 = 9
46 - 34 = 12
34 - 25 = 9
25 - x = 12
rearrange that so,
25 - 12 = x
x = 13
Answer:
b) 13
Step-by-step explanation:
67 - 12 = 55
55 - 9 = 46
46 - 12 = 34
34 - 9 = 25
pattern: subtract 12, subtract 9
the pattern tells us to subtract 12, so take take 25 and subtract 12 from it:
25 - 12 = 13
Pls Help!!!!! I will pick the brainiest answer as well. ;)
Answers
Answer:
49
Step-by-step explanation:
20+4=24 24+25=49